Abseil Common Libraries (C++) (grcp 依赖)
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64 lines
2.2 KiB
64 lines
2.2 KiB
// Copyright 2018 The Abseil Authors. |
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// Licensed under the Apache License, Version 2.0 (the "License"); |
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// you may not use this file except in compliance with the License. |
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// You may obtain a copy of the License at |
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// |
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// http://www.apache.org/licenses/LICENSE-2.0 |
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// |
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// Unless required by applicable law or agreed to in writing, software |
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// distributed under the License is distributed on an "AS IS" BASIS, |
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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// See the License for the specific language governing permissions and |
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// limitations under the License. |
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#include <cstddef> |
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#include <string> |
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#include "absl/time/internal/test_util.h" |
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#include "absl/time/time.h" |
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#include "benchmark/benchmark.h" |
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namespace { |
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namespace { |
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const char* const kFormats[] = { |
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absl::RFC1123_full, // 0 |
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absl::RFC1123_no_wday, // 1 |
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absl::RFC3339_full, // 2 |
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absl::RFC3339_sec, // 3 |
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"%Y-%m-%dT%H:%M:%S", // 4 |
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"%Y-%m-%d", // 5 |
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}; |
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const int kNumFormats = sizeof(kFormats) / sizeof(kFormats[0]); |
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} // namespace |
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void BM_Format_FormatTime(benchmark::State& state) { |
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const std::string fmt = kFormats[state.range(0)]; |
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state.SetLabel(fmt); |
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const absl::TimeZone lax = |
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absl::time_internal::LoadTimeZone("America/Los_Angeles"); |
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const absl::Time t = |
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absl::FromCivil(absl::CivilSecond(1977, 6, 28, 9, 8, 7), lax) + |
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absl::Nanoseconds(1); |
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while (state.KeepRunning()) { |
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benchmark::DoNotOptimize(absl::FormatTime(fmt, t, lax).length()); |
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} |
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} |
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BENCHMARK(BM_Format_FormatTime)->DenseRange(0, kNumFormats - 1); |
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void BM_Format_ParseTime(benchmark::State& state) { |
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const std::string fmt = kFormats[state.range(0)]; |
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state.SetLabel(fmt); |
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const absl::TimeZone lax = |
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absl::time_internal::LoadTimeZone("America/Los_Angeles"); |
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absl::Time t = absl::FromCivil(absl::CivilSecond(1977, 6, 28, 9, 8, 7), lax) + |
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absl::Nanoseconds(1); |
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const std::string when = absl::FormatTime(fmt, t, lax); |
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std::string err; |
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while (state.KeepRunning()) { |
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benchmark::DoNotOptimize(absl::ParseTime(fmt, when, lax, &t, &err)); |
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} |
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} |
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BENCHMARK(BM_Format_ParseTime)->DenseRange(0, kNumFormats - 1); |
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} // namespace
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