52 lines
1.5 KiB
C++
52 lines
1.5 KiB
C++
/*
|
|
* BenchMem.cpp
|
|
*
|
|
* This source file is part of the FoundationDB open source project
|
|
*
|
|
* Copyright 2013-2022 Apple Inc. and the FoundationDB project 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
|
|
*
|
|
* http://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 <cstring>
|
|
#include <memory>
|
|
|
|
#include "benchmark/benchmark.h"
|
|
|
|
static void bench_memcmp(benchmark::State& state) {
|
|
constexpr int kLength = 10000;
|
|
std::unique_ptr<char[]> b1{ new char[kLength] };
|
|
std::unique_ptr<char[]> b2{ new char[kLength] };
|
|
memset(b1.get(), 0, kLength);
|
|
memset(b2.get(), 0, kLength);
|
|
b2.get()[kLength - 1] = 1;
|
|
|
|
while (state.KeepRunning()) {
|
|
benchmark::DoNotOptimize(memcmp(b1.get(), b2.get(), kLength));
|
|
}
|
|
}
|
|
|
|
static void bench_memcpy(benchmark::State& state) {
|
|
constexpr int kLength = 10000;
|
|
std::unique_ptr<char[]> b1{ new char[kLength] };
|
|
std::unique_ptr<char[]> b2{ new char[kLength] };
|
|
memset(b1.get(), 0, kLength);
|
|
|
|
while (state.KeepRunning()) {
|
|
benchmark::DoNotOptimize(memcpy(b2.get(), b1.get(), kLength));
|
|
}
|
|
}
|
|
|
|
BENCHMARK(bench_memcmp);
|
|
BENCHMARK(bench_memcpy);
|