115 lines
3.0 KiB
C++
115 lines
3.0 KiB
C++
/*
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* Copyright (C) 2022 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "android-base/function_ref.h"
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#include <benchmark/benchmark.h>
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#include <functional>
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#include <utility>
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#include <time.h>
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using android::base::function_ref;
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template <class Callable, class... Args>
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[[clang::noinline]] auto call(Callable&& c, Args&&... args) {
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return c(std::forward<Args>(args)...);
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}
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[[clang::noinline]] static int testFunc(int, const char*, char) {
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return time(nullptr);
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}
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using Func = decltype(testFunc);
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static void BenchmarkFuncRaw(benchmark::State& state) {
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for (auto _ : state) {
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benchmark::DoNotOptimize(call(testFunc, 1, "1", '1'));
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}
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}
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BENCHMARK(BenchmarkFuncRaw);
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static void BenchmarkFuncPtr(benchmark::State& state) {
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auto ptr = &testFunc;
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for (auto _ : state) {
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benchmark::DoNotOptimize(call(ptr, 1, "1", '1'));
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}
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}
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BENCHMARK(BenchmarkFuncPtr);
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static void BenchmarkStdFunction(benchmark::State& state) {
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std::function<Func> f(testFunc);
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for (auto _ : state) {
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benchmark::DoNotOptimize(call(f, 1, "1", '1'));
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}
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}
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BENCHMARK(BenchmarkStdFunction);
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static void BenchmarkFunctionRef(benchmark::State& state) {
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function_ref<Func> f(testFunc);
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for (auto _ : state) {
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benchmark::DoNotOptimize(call(f, 1, "1", '1'));
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}
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}
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BENCHMARK(BenchmarkFunctionRef);
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namespace {
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struct BigFunc {
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char big[128];
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[[clang::noinline]] int operator()(int, const char*, char) const { return time(nullptr); }
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};
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static BigFunc bigFunc;
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} // namespace
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static void BenchmarkBigRaw(benchmark::State& state) {
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for (auto _ : state) {
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benchmark::DoNotOptimize(call(bigFunc, 1, "1", '1'));
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}
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}
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BENCHMARK(BenchmarkBigRaw);
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static void BenchmarkBigStdFunction(benchmark::State& state) {
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std::function<Func> f(bigFunc);
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for (auto _ : state) {
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benchmark::DoNotOptimize(call(f, 1, "1", '1'));
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}
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}
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BENCHMARK(BenchmarkBigStdFunction);
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static void BenchmarkBigFunctionRef(benchmark::State& state) {
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function_ref<Func> f(bigFunc);
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for (auto _ : state) {
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benchmark::DoNotOptimize(call(f, 1, "1", '1'));
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}
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}
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BENCHMARK(BenchmarkBigFunctionRef);
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static void BenchmarkMakeFunctionRef(benchmark::State& state) {
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for (auto _ : state) {
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benchmark::DoNotOptimize(call<function_ref<Func>>(bigFunc, 1, "1", '1'));
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}
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}
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BENCHMARK(BenchmarkMakeFunctionRef);
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static void BenchmarkMakeStdFunction(benchmark::State& state) {
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for (auto _ : state) {
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benchmark::DoNotOptimize(call<std::function<Func>>(bigFunc, 1, "1", '1'));
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}
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}
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BENCHMARK(BenchmarkMakeStdFunction);
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