| // Copyright 2016 Google Inc. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // https://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include <algorithm> |
| #include <cassert> |
| #include <chrono> |
| #include <ctime> |
| #include <random> |
| #include <string> |
| #include <vector> |
| |
| #include "benchmark/benchmark.h" |
| #include "absl/time/internal/cctz/include/cctz/civil_time.h" |
| #include "absl/time/internal/cctz/include/cctz/time_zone.h" |
| #include "time_zone_impl.h" |
| |
| namespace { |
| |
| namespace cctz = absl::time_internal::cctz; |
| |
| void BM_Difference_Days(benchmark::State& state) { |
| const cctz::civil_day c(2014, 8, 22); |
| const cctz::civil_day epoch(1970, 1, 1); |
| while (state.KeepRunning()) { |
| benchmark::DoNotOptimize(c - epoch); |
| } |
| } |
| BENCHMARK(BM_Difference_Days); |
| |
| void BM_Step_Days(benchmark::State& state) { |
| const cctz::civil_day kStart(2014, 8, 22); |
| cctz::civil_day c = kStart; |
| while (state.KeepRunning()) { |
| benchmark::DoNotOptimize(++c); |
| } |
| } |
| BENCHMARK(BM_Step_Days); |
| |
| const char RFC3339_full[] = "%Y-%m-%dT%H:%M:%E*S%Ez"; |
| const char RFC3339_sec[] = "%Y-%m-%dT%H:%M:%S%Ez"; |
| |
| const char RFC1123_full[] = "%a, %d %b %Y %H:%M:%S %z"; |
| const char RFC1123_no_wday[] = "%d %b %Y %H:%M:%S %z"; |
| |
| // A list of known time-zone names. |
| // TODO: Refactor with src/time_zone_lookup_test.cc. |
| const char* const kTimeZoneNames[] = { |
| "Africa/Abidjan", |
| "Africa/Accra", |
| "Africa/Addis_Ababa", |
| "Africa/Algiers", |
| "Africa/Asmara", |
| "Africa/Asmera", |
| "Africa/Bamako", |
| "Africa/Bangui", |
| "Africa/Banjul", |
| "Africa/Bissau", |
| "Africa/Blantyre", |
| "Africa/Brazzaville", |
| "Africa/Bujumbura", |
| "Africa/Cairo", |
| "Africa/Casablanca", |
| "Africa/Ceuta", |
| "Africa/Conakry", |
| "Africa/Dakar", |
| "Africa/Dar_es_Salaam", |
| "Africa/Djibouti", |
| "Africa/Douala", |
| "Africa/El_Aaiun", |
| "Africa/Freetown", |
| "Africa/Gaborone", |
| "Africa/Harare", |
| "Africa/Johannesburg", |
| "Africa/Juba", |
| "Africa/Kampala", |
| "Africa/Khartoum", |
| "Africa/Kigali", |
| "Africa/Kinshasa", |
| "Africa/Lagos", |
| "Africa/Libreville", |
| "Africa/Lome", |
| "Africa/Luanda", |
| "Africa/Lubumbashi", |
| "Africa/Lusaka", |
| "Africa/Malabo", |
| "Africa/Maputo", |
| "Africa/Maseru", |
| "Africa/Mbabane", |
| "Africa/Mogadishu", |
| "Africa/Monrovia", |
| "Africa/Nairobi", |
| "Africa/Ndjamena", |
| "Africa/Niamey", |
| "Africa/Nouakchott", |
| "Africa/Ouagadougou", |
| "Africa/Porto-Novo", |
| "Africa/Sao_Tome", |
| "Africa/Timbuktu", |
| "Africa/Tripoli", |
| "Africa/Tunis", |
| "Africa/Windhoek", |
| "America/Adak", |
| "America/Anchorage", |
| "America/Anguilla", |
| "America/Antigua", |
| "America/Araguaina", |
| "America/Argentina/Buenos_Aires", |
| "America/Argentina/Catamarca", |
| "America/Argentina/ComodRivadavia", |
| "America/Argentina/Cordoba", |
| "America/Argentina/Jujuy", |
| "America/Argentina/La_Rioja", |
| "America/Argentina/Mendoza", |
| "America/Argentina/Rio_Gallegos", |
| "America/Argentina/Salta", |
| "America/Argentina/San_Juan", |
| "America/Argentina/San_Luis", |
| "America/Argentina/Tucuman", |
| "America/Argentina/Ushuaia", |
| "America/Aruba", |
| "America/Asuncion", |
| "America/Atikokan", |
| "America/Atka", |
| "America/Bahia", |
| "America/Bahia_Banderas", |
| "America/Barbados", |
| "America/Belem", |
| "America/Belize", |
| "America/Blanc-Sablon", |
| "America/Boa_Vista", |
| "America/Bogota", |
| "America/Boise", |
| "America/Buenos_Aires", |
| "America/Cambridge_Bay", |
| "America/Campo_Grande", |
| "America/Cancun", |
| "America/Caracas", |
| "America/Catamarca", |
| "America/Cayenne", |
| "America/Cayman", |
| "America/Chicago", |
| "America/Chihuahua", |
| "America/Coral_Harbour", |
| "America/Cordoba", |
| "America/Costa_Rica", |
| "America/Creston", |
| "America/Cuiaba", |
| "America/Curacao", |
| "America/Danmarkshavn", |
| "America/Dawson", |
| "America/Dawson_Creek", |
| "America/Denver", |
| "America/Detroit", |
| "America/Dominica", |
| "America/Edmonton", |
| "America/Eirunepe", |
| "America/El_Salvador", |
| "America/Ensenada", |
| "America/Fort_Nelson", |
| "America/Fort_Wayne", |
| "America/Fortaleza", |
| "America/Glace_Bay", |
| "America/Godthab", |
| "America/Goose_Bay", |
| "America/Grand_Turk", |
| "America/Grenada", |
| "America/Guadeloupe", |
| "America/Guatemala", |
| "America/Guayaquil", |
| "America/Guyana", |
| "America/Halifax", |
| "America/Havana", |
| "America/Hermosillo", |
| "America/Indiana/Indianapolis", |
| "America/Indiana/Knox", |
| "America/Indiana/Marengo", |
| "America/Indiana/Petersburg", |
| "America/Indiana/Tell_City", |
| "America/Indiana/Vevay", |
| "America/Indiana/Vincennes", |
| "America/Indiana/Winamac", |
| "America/Indianapolis", |
| "America/Inuvik", |
| "America/Iqaluit", |
| "America/Jamaica", |
| "America/Jujuy", |
| "America/Juneau", |
| "America/Kentucky/Louisville", |
| "America/Kentucky/Monticello", |
| "America/Knox_IN", |
| "America/Kralendijk", |
| "America/La_Paz", |
| "America/Lima", |
| "America/Los_Angeles", |
| "America/Louisville", |
| "America/Lower_Princes", |
| "America/Maceio", |
| "America/Managua", |
| "America/Manaus", |
| "America/Marigot", |
| "America/Martinique", |
| "America/Matamoros", |
| "America/Mazatlan", |
| "America/Mendoza", |
| "America/Menominee", |
| "America/Merida", |
| "America/Metlakatla", |
| "America/Mexico_City", |
| "America/Miquelon", |
| "America/Moncton", |
| "America/Monterrey", |
| "America/Montevideo", |
| "America/Montreal", |
| "America/Montserrat", |
| "America/Nassau", |
| "America/New_York", |
| "America/Nipigon", |
| "America/Nome", |
| "America/Noronha", |
| "America/North_Dakota/Beulah", |
| "America/North_Dakota/Center", |
| "America/North_Dakota/New_Salem", |
| "America/Ojinaga", |
| "America/Panama", |
| "America/Pangnirtung", |
| "America/Paramaribo", |
| "America/Phoenix", |
| "America/Port-au-Prince", |
| "America/Port_of_Spain", |
| "America/Porto_Acre", |
| "America/Porto_Velho", |
| "America/Puerto_Rico", |
| "America/Punta_Arenas", |
| "America/Rainy_River", |
| "America/Rankin_Inlet", |
| "America/Recife", |
| "America/Regina", |
| "America/Resolute", |
| "America/Rio_Branco", |
| "America/Rosario", |
| "America/Santa_Isabel", |
| "America/Santarem", |
| "America/Santiago", |
| "America/Santo_Domingo", |
| "America/Sao_Paulo", |
| "America/Scoresbysund", |
| "America/Shiprock", |
| "America/Sitka", |
| "America/St_Barthelemy", |
| "America/St_Johns", |
| "America/St_Kitts", |
| "America/St_Lucia", |
| "America/St_Thomas", |
| "America/St_Vincent", |
| "America/Swift_Current", |
| "America/Tegucigalpa", |
| "America/Thule", |
| "America/Thunder_Bay", |
| "America/Tijuana", |
| "America/Toronto", |
| "America/Tortola", |
| "America/Vancouver", |
| "America/Virgin", |
| "America/Whitehorse", |
| "America/Winnipeg", |
| "America/Yakutat", |
| "America/Yellowknife", |
| "Antarctica/Casey", |
| "Antarctica/Davis", |
| "Antarctica/DumontDUrville", |
| "Antarctica/Macquarie", |
| "Antarctica/Mawson", |
| "Antarctica/McMurdo", |
| "Antarctica/Palmer", |
| "Antarctica/Rothera", |
| "Antarctica/South_Pole", |
| "Antarctica/Syowa", |
| "Antarctica/Troll", |
| "Antarctica/Vostok", |
| "Arctic/Longyearbyen", |
| "Asia/Aden", |
| "Asia/Almaty", |
| "Asia/Amman", |
| "Asia/Anadyr", |
| "Asia/Aqtau", |
| "Asia/Aqtobe", |
| "Asia/Ashgabat", |
| "Asia/Ashkhabad", |
| "Asia/Atyrau", |
| "Asia/Baghdad", |
| "Asia/Bahrain", |
| "Asia/Baku", |
| "Asia/Bangkok", |
| "Asia/Barnaul", |
| "Asia/Beirut", |
| "Asia/Bishkek", |
| "Asia/Brunei", |
| "Asia/Calcutta", |
| "Asia/Chita", |
| "Asia/Choibalsan", |
| "Asia/Chongqing", |
| "Asia/Chungking", |
| "Asia/Colombo", |
| "Asia/Dacca", |
| "Asia/Damascus", |
| "Asia/Dhaka", |
| "Asia/Dili", |
| "Asia/Dubai", |
| "Asia/Dushanbe", |
| "Asia/Famagusta", |
| "Asia/Gaza", |
| "Asia/Harbin", |
| "Asia/Hebron", |
| "Asia/Ho_Chi_Minh", |
| "Asia/Hong_Kong", |
| "Asia/Hovd", |
| "Asia/Irkutsk", |
| "Asia/Istanbul", |
| "Asia/Jakarta", |
| "Asia/Jayapura", |
| "Asia/Jerusalem", |
| "Asia/Kabul", |
| "Asia/Kamchatka", |
| "Asia/Karachi", |
| "Asia/Kashgar", |
| "Asia/Kathmandu", |
| "Asia/Katmandu", |
| "Asia/Khandyga", |
| "Asia/Kolkata", |
| "Asia/Krasnoyarsk", |
| "Asia/Kuala_Lumpur", |
| "Asia/Kuching", |
| "Asia/Kuwait", |
| "Asia/Macao", |
| "Asia/Macau", |
| "Asia/Magadan", |
| "Asia/Makassar", |
| "Asia/Manila", |
| "Asia/Muscat", |
| "Asia/Nicosia", |
| "Asia/Novokuznetsk", |
| "Asia/Novosibirsk", |
| "Asia/Omsk", |
| "Asia/Oral", |
| "Asia/Phnom_Penh", |
| "Asia/Pontianak", |
| "Asia/Pyongyang", |
| "Asia/Qatar", |
| "Asia/Qostanay", |
| "Asia/Qyzylorda", |
| "Asia/Rangoon", |
| "Asia/Riyadh", |
| "Asia/Saigon", |
| "Asia/Sakhalin", |
| "Asia/Samarkand", |
| "Asia/Seoul", |
| "Asia/Shanghai", |
| "Asia/Singapore", |
| "Asia/Srednekolymsk", |
| "Asia/Taipei", |
| "Asia/Tashkent", |
| "Asia/Tbilisi", |
| "Asia/Tehran", |
| "Asia/Tel_Aviv", |
| "Asia/Thimbu", |
| "Asia/Thimphu", |
| "Asia/Tokyo", |
| "Asia/Tomsk", |
| "Asia/Ujung_Pandang", |
| "Asia/Ulaanbaatar", |
| "Asia/Ulan_Bator", |
| "Asia/Urumqi", |
| "Asia/Ust-Nera", |
| "Asia/Vientiane", |
| "Asia/Vladivostok", |
| "Asia/Yakutsk", |
| "Asia/Yangon", |
| "Asia/Yekaterinburg", |
| "Asia/Yerevan", |
| "Atlantic/Azores", |
| "Atlantic/Bermuda", |
| "Atlantic/Canary", |
| "Atlantic/Cape_Verde", |
| "Atlantic/Faeroe", |
| "Atlantic/Faroe", |
| "Atlantic/Jan_Mayen", |
| "Atlantic/Madeira", |
| "Atlantic/Reykjavik", |
| "Atlantic/South_Georgia", |
| "Atlantic/St_Helena", |
| "Atlantic/Stanley", |
| "Australia/ACT", |
| "Australia/Adelaide", |
| "Australia/Brisbane", |
| "Australia/Broken_Hill", |
| "Australia/Canberra", |
| "Australia/Currie", |
| "Australia/Darwin", |
| "Australia/Eucla", |
| "Australia/Hobart", |
| "Australia/LHI", |
| "Australia/Lindeman", |
| "Australia/Lord_Howe", |
| "Australia/Melbourne", |
| "Australia/NSW", |
| "Australia/North", |
| "Australia/Perth", |
| "Australia/Queensland", |
| "Australia/South", |
| "Australia/Sydney", |
| "Australia/Tasmania", |
| "Australia/Victoria", |
| "Australia/West", |
| "Australia/Yancowinna", |
| "Brazil/Acre", |
| "Brazil/DeNoronha", |
| "Brazil/East", |
| "Brazil/West", |
| "CET", |
| "CST6CDT", |
| "Canada/Atlantic", |
| "Canada/Central", |
| "Canada/Eastern", |
| "Canada/Mountain", |
| "Canada/Newfoundland", |
| "Canada/Pacific", |
| "Canada/Saskatchewan", |
| "Canada/Yukon", |
| "Chile/Continental", |
| "Chile/EasterIsland", |
| "Cuba", |
| "EET", |
| "EST", |
| "EST5EDT", |
| "Egypt", |
| "Eire", |
| "Etc/GMT", |
| "Etc/GMT+0", |
| "Etc/GMT+1", |
| "Etc/GMT+10", |
| "Etc/GMT+11", |
| "Etc/GMT+12", |
| "Etc/GMT+2", |
| "Etc/GMT+3", |
| "Etc/GMT+4", |
| "Etc/GMT+5", |
| "Etc/GMT+6", |
| "Etc/GMT+7", |
| "Etc/GMT+8", |
| "Etc/GMT+9", |
| "Etc/GMT-0", |
| "Etc/GMT-1", |
| "Etc/GMT-10", |
| "Etc/GMT-11", |
| "Etc/GMT-12", |
| "Etc/GMT-13", |
| "Etc/GMT-14", |
| "Etc/GMT-2", |
| "Etc/GMT-3", |
| "Etc/GMT-4", |
| "Etc/GMT-5", |
| "Etc/GMT-6", |
| "Etc/GMT-7", |
| "Etc/GMT-8", |
| "Etc/GMT-9", |
| "Etc/GMT0", |
| "Etc/Greenwich", |
| "Etc/UCT", |
| "Etc/UTC", |
| "Etc/Universal", |
| "Etc/Zulu", |
| "Europe/Amsterdam", |
| "Europe/Andorra", |
| "Europe/Astrakhan", |
| "Europe/Athens", |
| "Europe/Belfast", |
| "Europe/Belgrade", |
| "Europe/Berlin", |
| "Europe/Bratislava", |
| "Europe/Brussels", |
| "Europe/Bucharest", |
| "Europe/Budapest", |
| "Europe/Busingen", |
| "Europe/Chisinau", |
| "Europe/Copenhagen", |
| "Europe/Dublin", |
| "Europe/Gibraltar", |
| "Europe/Guernsey", |
| "Europe/Helsinki", |
| "Europe/Isle_of_Man", |
| "Europe/Istanbul", |
| "Europe/Jersey", |
| "Europe/Kaliningrad", |
| "Europe/Kiev", |
| "Europe/Kirov", |
| "Europe/Lisbon", |
| "Europe/Ljubljana", |
| "Europe/London", |
| "Europe/Luxembourg", |
| "Europe/Madrid", |
| "Europe/Malta", |
| "Europe/Mariehamn", |
| "Europe/Minsk", |
| "Europe/Monaco", |
| "Europe/Moscow", |
| "Europe/Nicosia", |
| "Europe/Oslo", |
| "Europe/Paris", |
| "Europe/Podgorica", |
| "Europe/Prague", |
| "Europe/Riga", |
| "Europe/Rome", |
| "Europe/Samara", |
| "Europe/San_Marino", |
| "Europe/Sarajevo", |
| "Europe/Saratov", |
| "Europe/Simferopol", |
| "Europe/Skopje", |
| "Europe/Sofia", |
| "Europe/Stockholm", |
| "Europe/Tallinn", |
| "Europe/Tirane", |
| "Europe/Tiraspol", |
| "Europe/Ulyanovsk", |
| "Europe/Uzhgorod", |
| "Europe/Vaduz", |
| "Europe/Vatican", |
| "Europe/Vienna", |
| "Europe/Vilnius", |
| "Europe/Volgograd", |
| "Europe/Warsaw", |
| "Europe/Zagreb", |
| "Europe/Zaporozhye", |
| "Europe/Zurich", |
| "GB", |
| "GB-Eire", |
| "GMT", |
| "GMT+0", |
| "GMT-0", |
| "GMT0", |
| "Greenwich", |
| "HST", |
| "Hongkong", |
| "Iceland", |
| "Indian/Antananarivo", |
| "Indian/Chagos", |
| "Indian/Christmas", |
| "Indian/Cocos", |
| "Indian/Comoro", |
| "Indian/Kerguelen", |
| "Indian/Mahe", |
| "Indian/Maldives", |
| "Indian/Mauritius", |
| "Indian/Mayotte", |
| "Indian/Reunion", |
| "Iran", |
| "Israel", |
| "Jamaica", |
| "Japan", |
| "Kwajalein", |
| "Libya", |
| "MET", |
| "MST", |
| "MST7MDT", |
| "Mexico/BajaNorte", |
| "Mexico/BajaSur", |
| "Mexico/General", |
| "NZ", |
| "NZ-CHAT", |
| "Navajo", |
| "PRC", |
| "PST8PDT", |
| "Pacific/Apia", |
| "Pacific/Auckland", |
| "Pacific/Bougainville", |
| "Pacific/Chatham", |
| "Pacific/Chuuk", |
| "Pacific/Easter", |
| "Pacific/Efate", |
| "Pacific/Enderbury", |
| "Pacific/Fakaofo", |
| "Pacific/Fiji", |
| "Pacific/Funafuti", |
| "Pacific/Galapagos", |
| "Pacific/Gambier", |
| "Pacific/Guadalcanal", |
| "Pacific/Guam", |
| "Pacific/Honolulu", |
| "Pacific/Johnston", |
| "Pacific/Kiritimati", |
| "Pacific/Kosrae", |
| "Pacific/Kwajalein", |
| "Pacific/Majuro", |
| "Pacific/Marquesas", |
| "Pacific/Midway", |
| "Pacific/Nauru", |
| "Pacific/Niue", |
| "Pacific/Norfolk", |
| "Pacific/Noumea", |
| "Pacific/Pago_Pago", |
| "Pacific/Palau", |
| "Pacific/Pitcairn", |
| "Pacific/Pohnpei", |
| "Pacific/Ponape", |
| "Pacific/Port_Moresby", |
| "Pacific/Rarotonga", |
| "Pacific/Saipan", |
| "Pacific/Samoa", |
| "Pacific/Tahiti", |
| "Pacific/Tarawa", |
| "Pacific/Tongatapu", |
| "Pacific/Truk", |
| "Pacific/Wake", |
| "Pacific/Wallis", |
| "Pacific/Yap", |
| "Poland", |
| "Portugal", |
| "ROC", |
| "ROK", |
| "Singapore", |
| "Turkey", |
| "UCT", |
| "US/Alaska", |
| "US/Aleutian", |
| "US/Arizona", |
| "US/Central", |
| "US/East-Indiana", |
| "US/Eastern", |
| "US/Hawaii", |
| "US/Indiana-Starke", |
| "US/Michigan", |
| "US/Mountain", |
| "US/Pacific", |
| "US/Samoa", |
| "UTC", |
| "Universal", |
| "W-SU", |
| "WET", |
| "Zulu", |
| nullptr |
| }; |
| |
| std::vector<std::string> AllTimeZoneNames() { |
| std::vector<std::string> names; |
| for (const char* const* namep = kTimeZoneNames; *namep != nullptr; ++namep) { |
| names.push_back(std::string("file:") + *namep); |
| } |
| assert(!names.empty()); |
| |
| std::mt19937 urbg(42); // a UniformRandomBitGenerator with fixed seed |
| std::shuffle(names.begin(), names.end(), urbg); |
| return names; |
| } |
| |
| cctz::time_zone TestTimeZone() { |
| cctz::time_zone tz; |
| cctz::load_time_zone("America/Los_Angeles", &tz); |
| return tz; |
| } |
| |
| void BM_Zone_LoadUTCTimeZoneFirst(benchmark::State& state) { |
| cctz::time_zone tz; |
| cctz::load_time_zone("UTC", &tz); // in case we're first |
| cctz::time_zone::Impl::ClearTimeZoneMapTestOnly(); |
| while (state.KeepRunning()) { |
| benchmark::DoNotOptimize(cctz::load_time_zone("UTC", &tz)); |
| } |
| } |
| BENCHMARK(BM_Zone_LoadUTCTimeZoneFirst); |
| |
| void BM_Zone_LoadUTCTimeZoneLast(benchmark::State& state) { |
| cctz::time_zone tz; |
| for (const auto& name : AllTimeZoneNames()) { |
| cctz::load_time_zone(name, &tz); // prime cache |
| } |
| while (state.KeepRunning()) { |
| benchmark::DoNotOptimize(cctz::load_time_zone("UTC", &tz)); |
| } |
| } |
| BENCHMARK(BM_Zone_LoadUTCTimeZoneLast); |
| |
| void BM_Zone_LoadTimeZoneFirst(benchmark::State& state) { |
| cctz::time_zone tz = cctz::utc_time_zone(); // in case we're first |
| const std::string name = "file:America/Los_Angeles"; |
| while (state.KeepRunning()) { |
| state.PauseTiming(); |
| cctz::time_zone::Impl::ClearTimeZoneMapTestOnly(); |
| state.ResumeTiming(); |
| benchmark::DoNotOptimize(cctz::load_time_zone(name, &tz)); |
| } |
| } |
| BENCHMARK(BM_Zone_LoadTimeZoneFirst); |
| |
| void BM_Zone_LoadTimeZoneCached(benchmark::State& state) { |
| cctz::time_zone tz = cctz::utc_time_zone(); // in case we're first |
| cctz::time_zone::Impl::ClearTimeZoneMapTestOnly(); |
| const std::string name = "file:America/Los_Angeles"; |
| cctz::load_time_zone(name, &tz); // prime cache |
| while (state.KeepRunning()) { |
| benchmark::DoNotOptimize(cctz::load_time_zone(name, &tz)); |
| } |
| } |
| BENCHMARK(BM_Zone_LoadTimeZoneCached); |
| |
| void BM_Zone_LoadLocalTimeZoneCached(benchmark::State& state) { |
| cctz::utc_time_zone(); // in case we're first |
| cctz::time_zone::Impl::ClearTimeZoneMapTestOnly(); |
| cctz::local_time_zone(); // prime cache |
| while (state.KeepRunning()) { |
| benchmark::DoNotOptimize(cctz::local_time_zone()); |
| } |
| } |
| BENCHMARK(BM_Zone_LoadLocalTimeZoneCached); |
| |
| void BM_Zone_LoadAllTimeZonesFirst(benchmark::State& state) { |
| cctz::time_zone tz; |
| const std::vector<std::string> names = AllTimeZoneNames(); |
| for (auto index = names.size(); state.KeepRunning(); ++index) { |
| if (index == names.size()) { |
| index = 0; |
| } |
| if (index == 0) { |
| state.PauseTiming(); |
| cctz::time_zone::Impl::ClearTimeZoneMapTestOnly(); |
| state.ResumeTiming(); |
| } |
| benchmark::DoNotOptimize(cctz::load_time_zone(names[index], &tz)); |
| } |
| } |
| BENCHMARK(BM_Zone_LoadAllTimeZonesFirst); |
| |
| void BM_Zone_LoadAllTimeZonesCached(benchmark::State& state) { |
| cctz::time_zone tz; |
| const std::vector<std::string> names = AllTimeZoneNames(); |
| for (const auto& name : names) { |
| cctz::load_time_zone(name, &tz); // prime cache |
| } |
| for (auto index = names.size(); state.KeepRunning(); ++index) { |
| if (index == names.size()) { |
| index = 0; |
| } |
| benchmark::DoNotOptimize(cctz::load_time_zone(names[index], &tz)); |
| } |
| } |
| BENCHMARK(BM_Zone_LoadAllTimeZonesCached); |
| |
| void BM_Zone_TimeZoneEqualityImplicit(benchmark::State& state) { |
| cctz::time_zone tz; // implicit UTC |
| while (state.KeepRunning()) { |
| benchmark::DoNotOptimize(tz == tz); |
| } |
| } |
| BENCHMARK(BM_Zone_TimeZoneEqualityImplicit); |
| |
| void BM_Zone_TimeZoneEqualityExplicit(benchmark::State& state) { |
| cctz::time_zone tz = cctz::utc_time_zone(); // explicit UTC |
| while (state.KeepRunning()) { |
| benchmark::DoNotOptimize(tz == tz); |
| } |
| } |
| BENCHMARK(BM_Zone_TimeZoneEqualityExplicit); |
| |
| void BM_Zone_UTCTimeZone(benchmark::State& state) { |
| cctz::time_zone tz; |
| while (state.KeepRunning()) { |
| benchmark::DoNotOptimize(cctz::utc_time_zone()); |
| } |
| } |
| BENCHMARK(BM_Zone_UTCTimeZone); |
| |
| // In each "ToCivil" benchmark we switch between two instants separated |
| // by at least one transition in order to defeat any internal caching of |
| // previous results (e.g., see local_time_hint_). |
| // |
| // The "UTC" variants use UTC instead of the Google/local time zone. |
| |
| void BM_Time_ToCivil_CCTZ(benchmark::State& state) { |
| const cctz::time_zone tz = TestTimeZone(); |
| std::chrono::system_clock::time_point tp = |
| std::chrono::system_clock::from_time_t(1384569027); |
| std::chrono::system_clock::time_point tp2 = |
| std::chrono::system_clock::from_time_t(1418962578); |
| while (state.KeepRunning()) { |
| std::swap(tp, tp2); |
| tp += std::chrono::seconds(1); |
| benchmark::DoNotOptimize(cctz::convert(tp, tz)); |
| } |
| } |
| BENCHMARK(BM_Time_ToCivil_CCTZ); |
| |
| void BM_Time_ToCivil_Libc(benchmark::State& state) { |
| // No timezone support, so just use localtime. |
| time_t t = 1384569027; |
| time_t t2 = 1418962578; |
| struct tm tm; |
| while (state.KeepRunning()) { |
| std::swap(t, t2); |
| t += 1; |
| #if defined(_WIN32) || defined(_WIN64) |
| benchmark::DoNotOptimize(localtime_s(&tm, &t)); |
| #else |
| benchmark::DoNotOptimize(localtime_r(&t, &tm)); |
| #endif |
| } |
| } |
| BENCHMARK(BM_Time_ToCivil_Libc); |
| |
| void BM_Time_ToCivilUTC_CCTZ(benchmark::State& state) { |
| const cctz::time_zone tz = cctz::utc_time_zone(); |
| std::chrono::system_clock::time_point tp = |
| std::chrono::system_clock::from_time_t(1384569027); |
| while (state.KeepRunning()) { |
| tp += std::chrono::seconds(1); |
| benchmark::DoNotOptimize(cctz::convert(tp, tz)); |
| } |
| } |
| BENCHMARK(BM_Time_ToCivilUTC_CCTZ); |
| |
| void BM_Time_ToCivilUTC_Libc(benchmark::State& state) { |
| time_t t = 1384569027; |
| struct tm tm; |
| while (state.KeepRunning()) { |
| t += 1; |
| #if defined(_WIN32) || defined(_WIN64) |
| benchmark::DoNotOptimize(gmtime_s(&tm, &t)); |
| #else |
| benchmark::DoNotOptimize(gmtime_r(&t, &tm)); |
| #endif |
| } |
| } |
| BENCHMARK(BM_Time_ToCivilUTC_Libc); |
| |
| // In each "FromCivil" benchmark we switch between two YMDhms values |
| // separated by at least one transition in order to defeat any internal |
| // caching of previous results (e.g., see time_local_hint_). |
| // |
| // The "UTC" variants use UTC instead of the Google/local time zone. |
| // The "Day0" variants require normalization of the day of month. |
| |
| void BM_Time_FromCivil_CCTZ(benchmark::State& state) { |
| const cctz::time_zone tz = TestTimeZone(); |
| int i = 0; |
| while (state.KeepRunning()) { |
| if ((i++ & 1) == 0) { |
| benchmark::DoNotOptimize( |
| cctz::convert(cctz::civil_second(2014, 12, 18, 20, 16, 18), tz)); |
| } else { |
| benchmark::DoNotOptimize( |
| cctz::convert(cctz::civil_second(2013, 11, 15, 18, 30, 27), tz)); |
| } |
| } |
| } |
| BENCHMARK(BM_Time_FromCivil_CCTZ); |
| |
| void BM_Time_FromCivil_Libc(benchmark::State& state) { |
| // No timezone support, so just use localtime. |
| int i = 0; |
| while (state.KeepRunning()) { |
| struct tm tm; |
| if ((i++ & 1) == 0) { |
| tm.tm_year = 2014 - 1900; |
| tm.tm_mon = 12 - 1; |
| tm.tm_mday = 18; |
| tm.tm_hour = 20; |
| tm.tm_min = 16; |
| tm.tm_sec = 18; |
| } else { |
| tm.tm_year = 2013 - 1900; |
| tm.tm_mon = 11 - 1; |
| tm.tm_mday = 15; |
| tm.tm_hour = 18; |
| tm.tm_min = 30; |
| tm.tm_sec = 27; |
| } |
| tm.tm_isdst = -1; |
| benchmark::DoNotOptimize(mktime(&tm)); |
| } |
| } |
| BENCHMARK(BM_Time_FromCivil_Libc); |
| |
| void BM_Time_FromCivilUTC_CCTZ(benchmark::State& state) { |
| const cctz::time_zone tz = cctz::utc_time_zone(); |
| while (state.KeepRunning()) { |
| benchmark::DoNotOptimize( |
| cctz::convert(cctz::civil_second(2014, 12, 18, 20, 16, 18), tz)); |
| } |
| } |
| BENCHMARK(BM_Time_FromCivilUTC_CCTZ); |
| |
| // There is no BM_Time_FromCivilUTC_Libc. |
| |
| void BM_Time_FromCivilDay0_CCTZ(benchmark::State& state) { |
| const cctz::time_zone tz = TestTimeZone(); |
| int i = 0; |
| while (state.KeepRunning()) { |
| if ((i++ & 1) == 0) { |
| benchmark::DoNotOptimize( |
| cctz::convert(cctz::civil_second(2014, 12, 0, 20, 16, 18), tz)); |
| } else { |
| benchmark::DoNotOptimize( |
| cctz::convert(cctz::civil_second(2013, 11, 0, 18, 30, 27), tz)); |
| } |
| } |
| } |
| BENCHMARK(BM_Time_FromCivilDay0_CCTZ); |
| |
| void BM_Time_FromCivilDay0_Libc(benchmark::State& state) { |
| // No timezone support, so just use localtime. |
| int i = 0; |
| while (state.KeepRunning()) { |
| struct tm tm; |
| if ((i++ & 1) == 0) { |
| tm.tm_year = 2014 - 1900; |
| tm.tm_mon = 12 - 1; |
| tm.tm_mday = 0; |
| tm.tm_hour = 20; |
| tm.tm_min = 16; |
| tm.tm_sec = 18; |
| } else { |
| tm.tm_year = 2013 - 1900; |
| tm.tm_mon = 11 - 1; |
| tm.tm_mday = 0; |
| tm.tm_hour = 18; |
| tm.tm_min = 30; |
| tm.tm_sec = 27; |
| } |
| tm.tm_isdst = -1; |
| benchmark::DoNotOptimize(mktime(&tm)); |
| } |
| } |
| BENCHMARK(BM_Time_FromCivilDay0_Libc); |
| |
| const char* const kFormats[] = { |
| RFC1123_full, // 0 |
| RFC1123_no_wday, // 1 |
| RFC3339_full, // 2 |
| RFC3339_sec, // 3 |
| "%Y-%m-%dT%H:%M:%S", // 4 |
| "%Y-%m-%d", // 5 |
| }; |
| const int kNumFormats = sizeof(kFormats) / sizeof(kFormats[0]); |
| |
| void BM_Format_FormatTime(benchmark::State& state) { |
| const std::string fmt = kFormats[state.range(0)]; |
| state.SetLabel(fmt); |
| const cctz::time_zone tz = TestTimeZone(); |
| const std::chrono::system_clock::time_point tp = |
| cctz::convert(cctz::civil_second(1977, 6, 28, 9, 8, 7), tz) + |
| std::chrono::microseconds(1); |
| while (state.KeepRunning()) { |
| benchmark::DoNotOptimize(cctz::format(fmt, tp, tz)); |
| } |
| } |
| BENCHMARK(BM_Format_FormatTime)->DenseRange(0, kNumFormats - 1); |
| |
| void BM_Format_ParseTime(benchmark::State& state) { |
| const std::string fmt = kFormats[state.range(0)]; |
| state.SetLabel(fmt); |
| const cctz::time_zone tz = TestTimeZone(); |
| std::chrono::system_clock::time_point tp = |
| cctz::convert(cctz::civil_second(1977, 6, 28, 9, 8, 7), tz) + |
| std::chrono::microseconds(1); |
| const std::string when = cctz::format(fmt, tp, tz); |
| while (state.KeepRunning()) { |
| benchmark::DoNotOptimize(cctz::parse(fmt, when, tz, &tp)); |
| } |
| } |
| BENCHMARK(BM_Format_ParseTime)->DenseRange(0, kNumFormats - 1); |
| |
| } // namespace |
