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-rw-r--r--3rdparty/benchmark/test/benchmark_test.cc28
-rw-r--r--3rdparty/benchmark/test/options_test.cc16
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);