tvl-depot/absl/base/internal/periodic_sampler_benchmark.cc
Abseil Team 16d9fd58a5 Export of internal Abseil changes
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db8dbd0e8a7b0125a4819dfc81c9bd2496849c71 by Abseil Team <absl-team@google.com>:

Create GetSkipCount() and GetStride() methods and add rounding bias correction.

PiperOrigin-RevId: 281780897
GitOrigin-RevId: db8dbd0e8a7b0125a4819dfc81c9bd2496849c71
Change-Id: I56a97288b1cb38a9357c065747f8d9bc4b187fee
2019-11-22 11:35:22 -05:00

77 lines
2.3 KiB
C++

// Copyright 2019 The Abseil Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "benchmark/benchmark.h"
#include "absl/base/internal/periodic_sampler.h"
namespace absl {
namespace base_internal {
namespace {
template <typename Sampler>
void BM_Sample(Sampler* sampler, benchmark::State& state) {
for (auto _ : state) {
benchmark::DoNotOptimize(sampler);
benchmark::DoNotOptimize(sampler->Sample());
}
}
template <typename Sampler>
void BM_SampleMinunumInlined(Sampler* sampler, benchmark::State& state) {
for (auto _ : state) {
benchmark::DoNotOptimize(sampler);
if (ABSL_PREDICT_FALSE(sampler->SubtleMaybeSample())) {
benchmark::DoNotOptimize(sampler->SubtleConfirmSample());
}
}
}
void BM_PeriodicSampler_TinySample(benchmark::State& state) {
struct Tag {};
PeriodicSampler<Tag, 10> sampler;
BM_Sample(&sampler, state);
}
BENCHMARK(BM_PeriodicSampler_TinySample);
void BM_PeriodicSampler_ShortSample(benchmark::State& state) {
struct Tag {};
PeriodicSampler<Tag, 1024> sampler;
BM_Sample(&sampler, state);
}
BENCHMARK(BM_PeriodicSampler_ShortSample);
void BM_PeriodicSampler_LongSample(benchmark::State& state) {
struct Tag {};
PeriodicSampler<Tag, 1024 * 1024> sampler;
BM_Sample(&sampler, state);
}
BENCHMARK(BM_PeriodicSampler_LongSample);
void BM_PeriodicSampler_LongSampleMinunumInlined(benchmark::State& state) {
struct Tag {};
PeriodicSampler<Tag, 1024 * 1024> sampler;
BM_SampleMinunumInlined(&sampler, state);
}
BENCHMARK(BM_PeriodicSampler_LongSampleMinunumInlined);
void BM_PeriodicSampler_Disabled(benchmark::State& state) {
struct Tag {};
PeriodicSampler<Tag, 0> sampler;
BM_Sample(&sampler, state);
}
BENCHMARK(BM_PeriodicSampler_Disabled);
} // namespace
} // namespace base_internal
} // namespace absl