mirror of
https://github.com/google/benchmark.git
synced 2024-11-25 22:47:20 +00:00
25acf220a4
Recently the library added a new ranged-for variant of the KeepRunning loop that is much faster. For this reason it should be preferred in all new code. Because a library, its documentation, and its tests should all embody the best practices of using the library, this patch changes all but a few usages of KeepRunning() into for (auto _ : state). The remaining usages in the tests and documentation persist only to document and test behavior that is different between the two formulations. Also note that because the range-for loop requires C++11, the KeepRunning variant has not been deprecated at this time.
81 lines
1.8 KiB
C++
81 lines
1.8 KiB
C++
// Testing:
|
|
// State::PauseTiming()
|
|
// State::ResumeTiming()
|
|
// Test that CHECK's within these function diagnose when they are called
|
|
// outside of the KeepRunning() loop.
|
|
//
|
|
// NOTE: Users should NOT include or use src/check.h. This is only done in
|
|
// order to test library internals.
|
|
|
|
#include <cstdlib>
|
|
#include <stdexcept>
|
|
|
|
#include "../src/check.h"
|
|
#include "benchmark/benchmark.h"
|
|
|
|
#if defined(__GNUC__) && !defined(__EXCEPTIONS)
|
|
#define TEST_HAS_NO_EXCEPTIONS
|
|
#endif
|
|
|
|
void TestHandler() {
|
|
#ifndef TEST_HAS_NO_EXCEPTIONS
|
|
throw std::logic_error("");
|
|
#else
|
|
std::abort();
|
|
#endif
|
|
}
|
|
|
|
void try_invalid_pause_resume(benchmark::State& state) {
|
|
#if !defined(TEST_BENCHMARK_LIBRARY_HAS_NO_ASSERTIONS) && !defined(TEST_HAS_NO_EXCEPTIONS)
|
|
try {
|
|
state.PauseTiming();
|
|
std::abort();
|
|
} catch (std::logic_error const&) {
|
|
}
|
|
try {
|
|
state.ResumeTiming();
|
|
std::abort();
|
|
} catch (std::logic_error const&) {
|
|
}
|
|
#else
|
|
(void)state; // avoid unused warning
|
|
#endif
|
|
}
|
|
|
|
void BM_diagnostic_test(benchmark::State& state) {
|
|
static bool called_once = false;
|
|
|
|
if (called_once == false) try_invalid_pause_resume(state);
|
|
|
|
for (auto _ : state) {
|
|
benchmark::DoNotOptimize(state.iterations());
|
|
}
|
|
|
|
if (called_once == false) try_invalid_pause_resume(state);
|
|
|
|
called_once = true;
|
|
}
|
|
BENCHMARK(BM_diagnostic_test);
|
|
|
|
|
|
void BM_diagnostic_test_keep_running(benchmark::State& state) {
|
|
static bool called_once = false;
|
|
|
|
if (called_once == false) try_invalid_pause_resume(state);
|
|
|
|
while(state.KeepRunning()) {
|
|
benchmark::DoNotOptimize(state.iterations());
|
|
}
|
|
|
|
if (called_once == false) try_invalid_pause_resume(state);
|
|
|
|
called_once = true;
|
|
}
|
|
BENCHMARK(BM_diagnostic_test_keep_running);
|
|
|
|
int main(int argc, char* argv[]) {
|
|
benchmark::internal::GetAbortHandler() = &TestHandler;
|
|
benchmark::Initialize(&argc, argv);
|
|
benchmark::RunSpecifiedBenchmarks();
|
|
}
|