| |
| #undef NDEBUG |
| |
| #include <chrono> |
| #include <thread> |
| #include "../src/timers.h" |
| #include "benchmark/benchmark.h" |
| #include "output_test.h" |
| |
| static const std::chrono::duration<double, std::milli> time_frame(50); |
| static const double time_frame_in_sec( |
| std::chrono::duration_cast<std::chrono::duration<double, std::ratio<1, 1>>>( |
| time_frame) |
| .count()); |
| |
| void MyBusySpinwait() { |
| const auto start = benchmark::ChronoClockNow(); |
| |
| while (true) { |
| const auto now = benchmark::ChronoClockNow(); |
| const auto elapsed = now - start; |
| |
| if (std::chrono::duration<double, std::chrono::seconds::period>(elapsed) >= |
| time_frame) |
| return; |
| } |
| } |
| |
| // ========================================================================= // |
| // --------------------------- TEST CASES BEGIN ---------------------------- // |
| // ========================================================================= // |
| |
| // ========================================================================= // |
| // BM_MainThread |
| |
| void BM_MainThread(benchmark::State& state) { |
| for (auto _ : state) { |
| MyBusySpinwait(); |
| state.SetIterationTime(time_frame_in_sec); |
| } |
| state.counters["invtime"] = |
| benchmark::Counter{1, benchmark::Counter::kIsRate}; |
| } |
| |
| BENCHMARK(BM_MainThread)->Iterations(1)->Threads(1); |
| BENCHMARK(BM_MainThread)->Iterations(1)->Threads(1)->UseRealTime(); |
| BENCHMARK(BM_MainThread)->Iterations(1)->Threads(1)->UseManualTime(); |
| BENCHMARK(BM_MainThread)->Iterations(1)->Threads(1)->MeasureProcessCPUTime(); |
| BENCHMARK(BM_MainThread) |
| ->Iterations(1) |
| ->Threads(1) |
| ->MeasureProcessCPUTime() |
| ->UseRealTime(); |
| BENCHMARK(BM_MainThread) |
| ->Iterations(1) |
| ->Threads(1) |
| ->MeasureProcessCPUTime() |
| ->UseManualTime(); |
| |
| BENCHMARK(BM_MainThread)->Iterations(1)->Threads(2); |
| BENCHMARK(BM_MainThread)->Iterations(1)->Threads(2)->UseRealTime(); |
| BENCHMARK(BM_MainThread)->Iterations(1)->Threads(2)->UseManualTime(); |
| BENCHMARK(BM_MainThread)->Iterations(1)->Threads(2)->MeasureProcessCPUTime(); |
| BENCHMARK(BM_MainThread) |
| ->Iterations(1) |
| ->Threads(2) |
| ->MeasureProcessCPUTime() |
| ->UseRealTime(); |
| BENCHMARK(BM_MainThread) |
| ->Iterations(1) |
| ->Threads(2) |
| ->MeasureProcessCPUTime() |
| ->UseManualTime(); |
| |
| // ========================================================================= // |
| // BM_WorkerThread |
| |
| void BM_WorkerThread(benchmark::State& state) { |
| for (auto _ : state) { |
| std::thread Worker(&MyBusySpinwait); |
| Worker.join(); |
| state.SetIterationTime(time_frame_in_sec); |
| } |
| state.counters["invtime"] = |
| benchmark::Counter{1, benchmark::Counter::kIsRate}; |
| } |
| |
| BENCHMARK(BM_WorkerThread)->Iterations(1)->Threads(1); |
| BENCHMARK(BM_WorkerThread)->Iterations(1)->Threads(1)->UseRealTime(); |
| BENCHMARK(BM_WorkerThread)->Iterations(1)->Threads(1)->UseManualTime(); |
| BENCHMARK(BM_WorkerThread)->Iterations(1)->Threads(1)->MeasureProcessCPUTime(); |
| BENCHMARK(BM_WorkerThread) |
| ->Iterations(1) |
| ->Threads(1) |
| ->MeasureProcessCPUTime() |
| ->UseRealTime(); |
| BENCHMARK(BM_WorkerThread) |
| ->Iterations(1) |
| ->Threads(1) |
| ->MeasureProcessCPUTime() |
| ->UseManualTime(); |
| |
| BENCHMARK(BM_WorkerThread)->Iterations(1)->Threads(2); |
| BENCHMARK(BM_WorkerThread)->Iterations(1)->Threads(2)->UseRealTime(); |
| BENCHMARK(BM_WorkerThread)->Iterations(1)->Threads(2)->UseManualTime(); |
| BENCHMARK(BM_WorkerThread)->Iterations(1)->Threads(2)->MeasureProcessCPUTime(); |
| BENCHMARK(BM_WorkerThread) |
| ->Iterations(1) |
| ->Threads(2) |
| ->MeasureProcessCPUTime() |
| ->UseRealTime(); |
| BENCHMARK(BM_WorkerThread) |
| ->Iterations(1) |
| ->Threads(2) |
| ->MeasureProcessCPUTime() |
| ->UseManualTime(); |
| |
| // ========================================================================= // |
| // BM_MainThreadAndWorkerThread |
| |
| void BM_MainThreadAndWorkerThread(benchmark::State& state) { |
| for (auto _ : state) { |
| std::thread Worker(&MyBusySpinwait); |
| MyBusySpinwait(); |
| Worker.join(); |
| state.SetIterationTime(time_frame_in_sec); |
| } |
| state.counters["invtime"] = |
| benchmark::Counter{1, benchmark::Counter::kIsRate}; |
| } |
| |
| BENCHMARK(BM_MainThreadAndWorkerThread)->Iterations(1)->Threads(1); |
| BENCHMARK(BM_MainThreadAndWorkerThread) |
| ->Iterations(1) |
| ->Threads(1) |
| ->UseRealTime(); |
| BENCHMARK(BM_MainThreadAndWorkerThread) |
| ->Iterations(1) |
| ->Threads(1) |
| ->UseManualTime(); |
| BENCHMARK(BM_MainThreadAndWorkerThread) |
| ->Iterations(1) |
| ->Threads(1) |
| ->MeasureProcessCPUTime(); |
| BENCHMARK(BM_MainThreadAndWorkerThread) |
| ->Iterations(1) |
| ->Threads(1) |
| ->MeasureProcessCPUTime() |
| ->UseRealTime(); |
| BENCHMARK(BM_MainThreadAndWorkerThread) |
| ->Iterations(1) |
| ->Threads(1) |
| ->MeasureProcessCPUTime() |
| ->UseManualTime(); |
| |
| BENCHMARK(BM_MainThreadAndWorkerThread)->Iterations(1)->Threads(2); |
| BENCHMARK(BM_MainThreadAndWorkerThread) |
| ->Iterations(1) |
| ->Threads(2) |
| ->UseRealTime(); |
| BENCHMARK(BM_MainThreadAndWorkerThread) |
| ->Iterations(1) |
| ->Threads(2) |
| ->UseManualTime(); |
| BENCHMARK(BM_MainThreadAndWorkerThread) |
| ->Iterations(1) |
| ->Threads(2) |
| ->MeasureProcessCPUTime(); |
| BENCHMARK(BM_MainThreadAndWorkerThread) |
| ->Iterations(1) |
| ->Threads(2) |
| ->MeasureProcessCPUTime() |
| ->UseRealTime(); |
| BENCHMARK(BM_MainThreadAndWorkerThread) |
| ->Iterations(1) |
| ->Threads(2) |
| ->MeasureProcessCPUTime() |
| ->UseManualTime(); |
| |
| // ========================================================================= // |
| // ---------------------------- TEST CASES END ----------------------------- // |
| // ========================================================================= // |
| |
| int main(int argc, char* argv[]) { RunOutputTests(argc, argv); } |