75 lines
1.4 KiB
C++
75 lines
1.4 KiB
C++
#include "tile/base/chrono.h"
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#include <sys/time.h>
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#include <chrono>
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#include "benchmark/benchmark.h"
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namespace tile {
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void
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Benchmark_GetTimeOfDay(benchmark::State &state)
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{
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while (state.KeepRunning()) {
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struct timeval tv;
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gettimeofday(&tv, nullptr);
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}
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}
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BENCHMARK(Benchmark_GetTimeOfDay);
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void
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Benchmark_StdSteadyClock(benchmark::State &state)
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{
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while (state.KeepRunning()) { (void) std::chrono::steady_clock::now(); }
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}
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BENCHMARK(Benchmark_StdSteadyClock);
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void
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Benchmark_StdSystemClock(benchmark::State &state)
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{
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while (state.KeepRunning()) { (void) std::chrono::system_clock::now(); }
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}
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BENCHMARK(Benchmark_StdSystemClock);
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void
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Benchmark_ReadSteadyClock(benchmark::State &state)
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{
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while (state.KeepRunning()) { ReadSteadyClock(); }
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}
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BENCHMARK(Benchmark_ReadSteadyClock);
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void
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Benchmark_ReadSystemClock(benchmark::State &state)
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{
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while (state.KeepRunning()) { ReadSystemClock(); }
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}
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BENCHMARK(Benchmark_ReadSystemClock);
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void
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Benchmark_ReadCoarseSteadyClock(benchmark::State &state)
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{
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while (state.KeepRunning()) {
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// ... <+23>: lea 0x137c5a(%rip),%rax # `system_clock_time_since_epoch`
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// ... <+30>: mov (%rax),%rax
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ReadCoarseSteadyClock();
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}
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}
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BENCHMARK(Benchmark_ReadCoarseSteadyClock);
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void
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Benchmark_ReadCoarseSystemClock(benchmark::State &state)
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{
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while (state.KeepRunning()) { ReadCoarseSystemClock(); }
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}
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BENCHMARK(Benchmark_ReadCoarseSystemClock);
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}// namespace tile
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