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-rw-r--r--3rdparty/benchmark/test/basic_test.cc102
1 files changed, 102 insertions, 0 deletions
diff --git a/3rdparty/benchmark/test/basic_test.cc b/3rdparty/benchmark/test/basic_test.cc
new file mode 100644
index 00000000000..3435415447f
--- /dev/null
+++ b/3rdparty/benchmark/test/basic_test.cc
@@ -0,0 +1,102 @@
+
+#include "benchmark/benchmark_api.h"
+
+#define BASIC_BENCHMARK_TEST(x) \
+ BENCHMARK(x)->Arg(8)->Arg(512)->Arg(8192)
+
+void BM_empty(benchmark::State& state) {
+ while (state.KeepRunning()) {
+ benchmark::DoNotOptimize(state.iterations());
+ }
+}
+BENCHMARK(BM_empty);
+BENCHMARK(BM_empty)->ThreadPerCpu();
+
+void BM_spin_empty(benchmark::State& state) {
+ while (state.KeepRunning()) {
+ for (int x = 0; x < state.range_x(); ++x) {
+ benchmark::DoNotOptimize(x);
+ }
+ }
+}
+BASIC_BENCHMARK_TEST(BM_spin_empty);
+BASIC_BENCHMARK_TEST(BM_spin_empty)->ThreadPerCpu();
+
+void BM_spin_pause_before(benchmark::State& state) {
+ for (int i = 0; i < state.range_x(); ++i) {
+ benchmark::DoNotOptimize(i);
+ }
+ while(state.KeepRunning()) {
+ for (int i = 0; i < state.range_x(); ++i) {
+ benchmark::DoNotOptimize(i);
+ }
+ }
+}
+BASIC_BENCHMARK_TEST(BM_spin_pause_before);
+BASIC_BENCHMARK_TEST(BM_spin_pause_before)->ThreadPerCpu();
+
+
+void BM_spin_pause_during(benchmark::State& state) {
+ while(state.KeepRunning()) {
+ state.PauseTiming();
+ for (int i = 0; i < state.range_x(); ++i) {
+ benchmark::DoNotOptimize(i);
+ }
+ state.ResumeTiming();
+ for (int i = 0; i < state.range_x(); ++i) {
+ benchmark::DoNotOptimize(i);
+ }
+ }
+}
+BASIC_BENCHMARK_TEST(BM_spin_pause_during);
+BASIC_BENCHMARK_TEST(BM_spin_pause_during)->ThreadPerCpu();
+
+void BM_pause_during(benchmark::State& state) {
+ while(state.KeepRunning()) {
+ state.PauseTiming();
+ state.ResumeTiming();
+ }
+}
+BENCHMARK(BM_pause_during);
+BENCHMARK(BM_pause_during)->ThreadPerCpu();
+BENCHMARK(BM_pause_during)->UseRealTime();
+BENCHMARK(BM_pause_during)->UseRealTime()->ThreadPerCpu();
+
+void BM_spin_pause_after(benchmark::State& state) {
+ while(state.KeepRunning()) {
+ for (int i = 0; i < state.range_x(); ++i) {
+ benchmark::DoNotOptimize(i);
+ }
+ }
+ for (int i = 0; i < state.range_x(); ++i) {
+ benchmark::DoNotOptimize(i);
+ }
+}
+BASIC_BENCHMARK_TEST(BM_spin_pause_after);
+BASIC_BENCHMARK_TEST(BM_spin_pause_after)->ThreadPerCpu();
+
+
+void BM_spin_pause_before_and_after(benchmark::State& state) {
+ for (int i = 0; i < state.range_x(); ++i) {
+ benchmark::DoNotOptimize(i);
+ }
+ while(state.KeepRunning()) {
+ for (int i = 0; i < state.range_x(); ++i) {
+ benchmark::DoNotOptimize(i);
+ }
+ }
+ for (int i = 0; i < state.range_x(); ++i) {
+ benchmark::DoNotOptimize(i);
+ }
+}
+BASIC_BENCHMARK_TEST(BM_spin_pause_before_and_after);
+BASIC_BENCHMARK_TEST(BM_spin_pause_before_and_after)->ThreadPerCpu();
+
+
+void BM_empty_stop_start(benchmark::State& state) {
+ while (state.KeepRunning()) { }
+}
+BENCHMARK(BM_empty_stop_start);
+BENCHMARK(BM_empty_stop_start)->ThreadPerCpu();
+
+BENCHMARK_MAIN()