Abseil Common Libraries (C++) (grcp 依赖)
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72 lines
2.0 KiB
72 lines
2.0 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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// https://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 "absl/time/clock.h" |
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#if !defined(_WIN32) |
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#include <sys/time.h> |
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#endif // _WIN32 |
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#include <cstdio> |
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#include "absl/base/internal/cycleclock.h" |
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#include "benchmark/benchmark.h" |
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namespace { |
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void BM_Clock_Now_AbslTime(benchmark::State& state) { |
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while (state.KeepRunning()) { |
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benchmark::DoNotOptimize(absl::Now()); |
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} |
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} |
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BENCHMARK(BM_Clock_Now_AbslTime); |
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void BM_Clock_Now_GetCurrentTimeNanos(benchmark::State& state) { |
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while (state.KeepRunning()) { |
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benchmark::DoNotOptimize(absl::GetCurrentTimeNanos()); |
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} |
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} |
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BENCHMARK(BM_Clock_Now_GetCurrentTimeNanos); |
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void BM_Clock_Now_AbslTime_ToUnixNanos(benchmark::State& state) { |
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while (state.KeepRunning()) { |
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benchmark::DoNotOptimize(absl::ToUnixNanos(absl::Now())); |
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} |
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} |
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BENCHMARK(BM_Clock_Now_AbslTime_ToUnixNanos); |
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void BM_Clock_Now_CycleClock(benchmark::State& state) { |
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while (state.KeepRunning()) { |
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benchmark::DoNotOptimize(absl::base_internal::CycleClock::Now()); |
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} |
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} |
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BENCHMARK(BM_Clock_Now_CycleClock); |
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#if !defined(_WIN32) |
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static void BM_Clock_Now_gettimeofday(benchmark::State& state) { |
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struct timeval tv; |
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while (state.KeepRunning()) { |
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benchmark::DoNotOptimize(gettimeofday(&tv, nullptr)); |
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} |
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} |
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BENCHMARK(BM_Clock_Now_gettimeofday); |
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static void BM_Clock_Now_clock_gettime(benchmark::State& state) { |
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struct timespec ts; |
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while (state.KeepRunning()) { |
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benchmark::DoNotOptimize(clock_gettime(CLOCK_REALTIME, &ts)); |
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} |
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} |
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BENCHMARK(BM_Clock_Now_clock_gettime); |
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#endif // _WIN32 |
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} // namespace
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