diff options
Diffstat (limited to '3rdparty/benchmark/test')
-rw-r--r-- | 3rdparty/benchmark/test/benchmark_test.cc | 28 | ||||
-rw-r--r-- | 3rdparty/benchmark/test/options_test.cc | 16 |
2 files changed, 44 insertions, 0 deletions
diff --git a/3rdparty/benchmark/test/benchmark_test.cc b/3rdparty/benchmark/test/benchmark_test.cc index 97abb68fdb8..252602a75f8 100644 --- a/3rdparty/benchmark/test/benchmark_test.cc +++ b/3rdparty/benchmark/test/benchmark_test.cc @@ -14,6 +14,8 @@ #include <sstream> #include <string> #include <vector> +#include <chrono> +#include <thread> #if defined(__GNUC__) # define BENCHMARK_NOINLINE __attribute__((noinline)) @@ -174,5 +176,31 @@ static void BM_ParallelMemset(benchmark::State& state) { } BENCHMARK(BM_ParallelMemset)->Arg(10 << 20)->ThreadRange(1, 4); +static void BM_ManualTiming(benchmark::State& state) { + size_t slept_for = 0; + int microseconds = state.range_x(); + std::chrono::duration<double, std::micro> sleep_duration { + static_cast<double>(microseconds) + }; + + while (state.KeepRunning()) { + auto start = std::chrono::high_resolution_clock::now(); + // Simulate some useful workload with a sleep + std::this_thread::sleep_for(std::chrono::duration_cast< + std::chrono::nanoseconds>(sleep_duration)); + auto end = std::chrono::high_resolution_clock::now(); + + auto elapsed = + std::chrono::duration_cast<std::chrono::duration<double>>( + end - start); + + state.SetIterationTime(elapsed.count()); + slept_for += microseconds; + } + state.SetItemsProcessed(slept_for); +} +BENCHMARK(BM_ManualTiming)->Range(1, 1 << 14)->UseRealTime(); +BENCHMARK(BM_ManualTiming)->Range(1, 1 << 14)->UseManualTime(); + BENCHMARK_MAIN() diff --git a/3rdparty/benchmark/test/options_test.cc b/3rdparty/benchmark/test/options_test.cc index d4c682d4ece..4737caa2e4c 100644 --- a/3rdparty/benchmark/test/options_test.cc +++ b/3rdparty/benchmark/test/options_test.cc @@ -1,11 +1,27 @@ #include "benchmark/benchmark_api.h" +#include <chrono> +#include <thread> + void BM_basic(benchmark::State& state) { while (state.KeepRunning()) { } } + +void BM_basic_slow(benchmark::State& state) { + std::chrono::milliseconds sleep_duration(state.range_x()); + while (state.KeepRunning()) { + std::this_thread::sleep_for( + std::chrono::duration_cast<std::chrono::nanoseconds>(sleep_duration) + ); + } +} + BENCHMARK(BM_basic); BENCHMARK(BM_basic)->Arg(42); +BENCHMARK(BM_basic_slow)->Arg(10)->Unit(benchmark::kNanosecond); +BENCHMARK(BM_basic_slow)->Arg(100)->Unit(benchmark::kMicrosecond); +BENCHMARK(BM_basic_slow)->Arg(1000)->Unit(benchmark::kMillisecond); BENCHMARK(BM_basic)->Range(1, 8); BENCHMARK(BM_basic)->DenseRange(10, 15); BENCHMARK(BM_basic)->ArgPair(42, 42); |