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Diffstat (limited to 'third_party/abseil_cpp/absl/functional/function_ref_benchmark.cc')
-rw-r--r-- | third_party/abseil_cpp/absl/functional/function_ref_benchmark.cc | 142 |
1 files changed, 0 insertions, 142 deletions
diff --git a/third_party/abseil_cpp/absl/functional/function_ref_benchmark.cc b/third_party/abseil_cpp/absl/functional/function_ref_benchmark.cc deleted file mode 100644 index 045305bfef30..000000000000 --- a/third_party/abseil_cpp/absl/functional/function_ref_benchmark.cc +++ /dev/null @@ -1,142 +0,0 @@ -// 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 "absl/functional/function_ref.h" - -#include <memory> - -#include "benchmark/benchmark.h" -#include "absl/base/attributes.h" - -namespace absl { -ABSL_NAMESPACE_BEGIN -namespace { - -int dummy = 0; - -void FreeFunction() { benchmark::DoNotOptimize(dummy); } - -struct TrivialFunctor { - void operator()() const { benchmark::DoNotOptimize(dummy); } -}; - -struct LargeFunctor { - void operator()() const { benchmark::DoNotOptimize(this); } - std::string a, b, c; -}; - -template <typename Function, typename... Args> -void ABSL_ATTRIBUTE_NOINLINE CallFunction(Function f, Args&&... args) { - f(std::forward<Args>(args)...); -} - -template <typename Function, typename Callable, typename... Args> -void ConstructAndCallFunctionBenchmark(benchmark::State& state, - const Callable& c, Args&&... args) { - for (auto _ : state) { - CallFunction<Function>(c, std::forward<Args>(args)...); - } -} - -void BM_TrivialStdFunction(benchmark::State& state) { - ConstructAndCallFunctionBenchmark<std::function<void()>>(state, - TrivialFunctor{}); -} -BENCHMARK(BM_TrivialStdFunction); - -void BM_TrivialFunctionRef(benchmark::State& state) { - ConstructAndCallFunctionBenchmark<FunctionRef<void()>>(state, - TrivialFunctor{}); -} -BENCHMARK(BM_TrivialFunctionRef); - -void BM_LargeStdFunction(benchmark::State& state) { - ConstructAndCallFunctionBenchmark<std::function<void()>>(state, - LargeFunctor{}); -} -BENCHMARK(BM_LargeStdFunction); - -void BM_LargeFunctionRef(benchmark::State& state) { - ConstructAndCallFunctionBenchmark<FunctionRef<void()>>(state, LargeFunctor{}); -} -BENCHMARK(BM_LargeFunctionRef); - -void BM_FunPtrStdFunction(benchmark::State& state) { - ConstructAndCallFunctionBenchmark<std::function<void()>>(state, FreeFunction); -} -BENCHMARK(BM_FunPtrStdFunction); - -void BM_FunPtrFunctionRef(benchmark::State& state) { - ConstructAndCallFunctionBenchmark<FunctionRef<void()>>(state, FreeFunction); -} -BENCHMARK(BM_FunPtrFunctionRef); - -// Doesn't include construction or copy overhead in the loop. -template <typename Function, typename Callable, typename... Args> -void CallFunctionBenchmark(benchmark::State& state, const Callable& c, - Args... args) { - Function f = c; - for (auto _ : state) { - benchmark::DoNotOptimize(&f); - f(args...); - } -} - -struct FunctorWithTrivialArgs { - void operator()(int a, int b, int c) const { - benchmark::DoNotOptimize(a); - benchmark::DoNotOptimize(b); - benchmark::DoNotOptimize(c); - } -}; - -void BM_TrivialArgsStdFunction(benchmark::State& state) { - CallFunctionBenchmark<std::function<void(int, int, int)>>( - state, FunctorWithTrivialArgs{}, 1, 2, 3); -} -BENCHMARK(BM_TrivialArgsStdFunction); - -void BM_TrivialArgsFunctionRef(benchmark::State& state) { - CallFunctionBenchmark<FunctionRef<void(int, int, int)>>( - state, FunctorWithTrivialArgs{}, 1, 2, 3); -} -BENCHMARK(BM_TrivialArgsFunctionRef); - -struct FunctorWithNonTrivialArgs { - void operator()(std::string a, std::string b, std::string c) const { - benchmark::DoNotOptimize(&a); - benchmark::DoNotOptimize(&b); - benchmark::DoNotOptimize(&c); - } -}; - -void BM_NonTrivialArgsStdFunction(benchmark::State& state) { - std::string a, b, c; - CallFunctionBenchmark< - std::function<void(std::string, std::string, std::string)>>( - state, FunctorWithNonTrivialArgs{}, a, b, c); -} -BENCHMARK(BM_NonTrivialArgsStdFunction); - -void BM_NonTrivialArgsFunctionRef(benchmark::State& state) { - std::string a, b, c; - CallFunctionBenchmark< - FunctionRef<void(std::string, std::string, std::string)>>( - state, FunctorWithNonTrivialArgs{}, a, b, c); -} -BENCHMARK(BM_NonTrivialArgsFunctionRef); - -} // namespace -ABSL_NAMESPACE_END -} // namespace absl |