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Merge pull request #90 from google/userealtime

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Enable UseRealTime and fix documentation for SetLabel.
This commit is contained in:
Eric 2015-03-11 13:30:28 -04:00
commit 7c6a7e3084
3 changed files with 15 additions and 8 deletions
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8
include/benchmark/benchmark.h
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@ -158,10 +158,6 @@ void RunSpecifiedBenchmarks(const BenchmarkReporter* reporter = nullptr);
// ------------------------------------------------------ // ------------------------------------------------------
// Routines that can be called from within a benchmark // Routines that can be called from within a benchmark
//
// REQUIRES: a benchmark is currently executing
void SetLabel(const std::string& label);
// If this routine is called, peak memory allocation past this point in the // If this routine is called, peak memory allocation past this point in the
// benchmark is reported at the end of the benchmark report line. (It is // benchmark is reported at the end of the benchmark report line. (It is
// computed by running the benchmark once with a single iteration and a memory // computed by running the benchmark once with a single iteration and a memory
@ -212,10 +208,10 @@ class State {
// If this routine is called, the specified label is printed at the // If this routine is called, the specified label is printed at the
// end of the benchmark report line for the currently executing // end of the benchmark report line for the currently executing
// benchmark. Example: // benchmark. Example:
// static void BM_Compress(int iters) { // static void BM_Compress(benchmark::State& state) {
// ... // ...
// double compress = input_size / output_size; // double compress = input_size / output_size;
// benchmark::SetLabel(StringPrintf("compress:%.1f%%", 100.0*compression)); // state.SetLabel(StringPrintf("compress:%.1f%%", 100.0*compression));
// } // }
// Produces output that looks like: // Produces output that looks like:
// BM_Compress 50 50 14115038 compress:27.3% // BM_Compress 50 50 14115038 compress:27.3%

4
src/benchmark.cc
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@ -416,8 +416,6 @@ void MemoryUsage() {
} }
*/ */
void UseRealTime() { use_real_time = true; }
void PrintUsageAndExit() { void PrintUsageAndExit() {
fprintf(stdout, fprintf(stdout,
"benchmark [--benchmark_filter=<regex>]\n" "benchmark [--benchmark_filter=<regex>]\n"
@ -1176,6 +1174,8 @@ void RunSpecifiedBenchmarks(const BenchmarkReporter* reporter /*= nullptr*/) {
spec, reporter == nullptr ? &default_reporter : reporter); spec, reporter == nullptr ? &default_reporter : reporter);
} }
void UseRealTime() { use_real_time = true; }
void Initialize(int* argc, const char** argv) { void Initialize(int* argc, const char** argv) {
internal::ParseCommandLineFlags(argc, argv); internal::ParseCommandLineFlags(argc, argv);
internal::SetLogLevel(FLAGS_v); internal::SetLogLevel(FLAGS_v);

11
test/benchmark_test.cc
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@ -57,6 +57,17 @@ static void BM_Factorial(benchmark::State& state) {
} }
BENCHMARK(BM_Factorial); BENCHMARK(BM_Factorial);
static void BM_FactorialRealTime(benchmark::State& state) {
benchmark::UseRealTime();
int fac_42 = 0;
while (state.KeepRunning())
fac_42 = Factorial(8);
// Prevent compiler optimizations
std::cout << fac_42;
}
BENCHMARK(BM_FactorialRealTime);
static void BM_CalculatePiRange(benchmark::State& state) { static void BM_CalculatePiRange(benchmark::State& state) {
double pi = 0.0; double pi = 0.0;
while (state.KeepRunning()) while (state.KeepRunning())