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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.
50 lines
1.0 KiB
C++
50 lines
1.0 KiB
C++
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#include "benchmark/benchmark.h"
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#include <cassert>
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#include <memory>
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class MyFixture : public ::benchmark::Fixture {
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public:
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void SetUp(const ::benchmark::State& state) {
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if (state.thread_index == 0) {
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assert(data.get() == nullptr);
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data.reset(new int(42));
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}
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}
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void TearDown(const ::benchmark::State& state) {
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if (state.thread_index == 0) {
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assert(data.get() != nullptr);
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data.reset();
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}
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}
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~MyFixture() { assert(data == nullptr); }
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std::unique_ptr<int> data;
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};
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BENCHMARK_F(MyFixture, Foo)(benchmark::State &st) {
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assert(data.get() != nullptr);
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assert(*data == 42);
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for (auto _ : st) {
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}
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}
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BENCHMARK_DEFINE_F(MyFixture, Bar)(benchmark::State& st) {
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if (st.thread_index == 0) {
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assert(data.get() != nullptr);
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assert(*data == 42);
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}
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for (auto _ : st) {
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assert(data.get() != nullptr);
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assert(*data == 42);
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}
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st.SetItemsProcessed(st.range(0));
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}
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BENCHMARK_REGISTER_F(MyFixture, Bar)->Arg(42);
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BENCHMARK_REGISTER_F(MyFixture, Bar)->Arg(42)->ThreadPerCpu();
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BENCHMARK_MAIN()
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