| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172 | // 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/clock.h"#if !defined(_WIN32)#include <sys/time.h>#endif  // _WIN32#include <cstdio>#include "absl/base/internal/cycleclock.h"#include "benchmark/benchmark.h"namespace {void BM_Clock_Now_AbslTime(benchmark::State& state) {  while (state.KeepRunning()) {    benchmark::DoNotOptimize(absl::Now());  }}BENCHMARK(BM_Clock_Now_AbslTime);void BM_Clock_Now_GetCurrentTimeNanos(benchmark::State& state) {  while (state.KeepRunning()) {    benchmark::DoNotOptimize(absl::GetCurrentTimeNanos());  }}BENCHMARK(BM_Clock_Now_GetCurrentTimeNanos);void BM_Clock_Now_AbslTime_ToUnixNanos(benchmark::State& state) {  while (state.KeepRunning()) {    benchmark::DoNotOptimize(absl::ToUnixNanos(absl::Now()));  }}BENCHMARK(BM_Clock_Now_AbslTime_ToUnixNanos);void BM_Clock_Now_CycleClock(benchmark::State& state) {  while (state.KeepRunning()) {    benchmark::DoNotOptimize(absl::base_internal::CycleClock::Now());  }}BENCHMARK(BM_Clock_Now_CycleClock);#if !defined(_WIN32)static void BM_Clock_Now_gettimeofday(benchmark::State& state) {  struct timeval tv;  while (state.KeepRunning()) {    benchmark::DoNotOptimize(gettimeofday(&tv, nullptr));  }}BENCHMARK(BM_Clock_Now_gettimeofday);static void BM_Clock_Now_clock_gettime(benchmark::State& state) {  struct timespec ts;  while (state.KeepRunning()) {    benchmark::DoNotOptimize(clock_gettime(CLOCK_REALTIME, &ts));  }}BENCHMARK(BM_Clock_Now_clock_gettime);#endif  // _WIN32}  // namespace
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