From f340f773edab951656b19b6f1a77c964a78ec4c2 Mon Sep 17 00:00:00 2001 From: Abseil Team Date: Wed, 10 Oct 2018 12:31:37 -0700 Subject: Export of internal Abseil changes. -- 906c47420646d510edd2479d5542c56f5fa31b65 by CJ Johnson : Import of CCTZ from GitHub. PiperOrigin-RevId: 216573923 -- 74560d4afd2b605909e677c6fc3076049fb3010a by Eric Fiselier : Avoid -Wformat-pedantic in benchmark. PiperOrigin-RevId: 216523769 -- 9bcc9da8b03e6d1ea43ee78931256c5541cb9686 by Eric Fiselier : Delete unused CityHash functions. PiperOrigin-RevId: 216464492 -- a42563b394c89fbb4c55cb5a6a5edbf96d271eea by Abseil Team : Introduce new Abseil interfaces for converting between civil times and absolute times.s Deprecates absl::ConvertDateTime() and absl::FromDateTime(). PiperOrigin-RevId: 216424948 -- 088e11235124267517d7f137854fa5554679c24f by Eric Fiselier : Remove unneeded break statements in test. PiperOrigin-RevId: 216403321 GitOrigin-RevId: 906c47420646d510edd2479d5542c56f5fa31b65 Change-Id: Idb44420be623e369c66f5a9c92bdc9ab46d3ec92 --- absl/time/civil_time_benchmark.cc | 57 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 57 insertions(+) create mode 100644 absl/time/civil_time_benchmark.cc (limited to 'absl/time/civil_time_benchmark.cc') diff --git a/absl/time/civil_time_benchmark.cc b/absl/time/civil_time_benchmark.cc new file mode 100644 index 00000000..567c2a33 --- /dev/null +++ b/absl/time/civil_time_benchmark.cc @@ -0,0 +1,57 @@ +// Copyright 2018 The Abseil Authors. +// +// 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 +// +// http://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 "absl/time/civil_time.h" + +#include "benchmark/benchmark.h" + +namespace { + +// Benchmark Time(ns) CPU(ns) Iterations +// ------------------------------------------------------------------------- +// BM_Difference_Days 20 20 34542508 +// BM_Step_Days 15 15 48098146 +// BM_Format 688 687 1019803 +// BM_Parse 921 920 762788 +// BM_RoundTripFormatParse 1766 1764 396092 + +void BM_Difference_Days(benchmark::State& state) { + const absl::CivilDay c(2014, 8, 22); + const absl::CivilDay epoch(1970, 1, 1); + while (state.KeepRunning()) { + const absl::civil_diff_t n = c - epoch; + benchmark::DoNotOptimize(n); + } +} +BENCHMARK(BM_Difference_Days); + +void BM_Step_Days(benchmark::State& state) { + const absl::CivilDay kStart(2014, 8, 22); + absl::CivilDay c = kStart; + while (state.KeepRunning()) { + benchmark::DoNotOptimize(++c); + } +} +BENCHMARK(BM_Step_Days); + +void BM_Format(benchmark::State& state) { + const absl::CivilSecond c(2014, 1, 2, 3, 4, 5); + while (state.KeepRunning()) { + const std::string s = absl::FormatCivilTime(c); + benchmark::DoNotOptimize(s); + } +} +BENCHMARK(BM_Format); + +} // namespace -- cgit v1.2.3