43 lines
1.3 KiB
C++
43 lines
1.3 KiB
C++
/*
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* Copyright (C) 2018 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 "PerformanceCounters.h"
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#include <benchmark/benchmark.h>
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static void BM_memcpy(benchmark::State& state) {
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char* src = new char[state.range(0)];
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char* dst = new char[state.range(0)];
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memset(src, 'x', (size_t)state.range(0));
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{
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PerformanceCounters pc(state);
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for (auto _ : state) {
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memcpy(dst, src, (size_t)state.range(0));
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benchmark::DoNotOptimize(dst);
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benchmark::DoNotOptimize(src);
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benchmark::ClobberMemory();
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}
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}
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state.SetBytesProcessed(int64_t(state.iterations()) * int64_t(state.range(0)));
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delete[] src;
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delete[] dst;
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}
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BENCHMARK(BM_memcpy)->Range(8, 8192<<10)->Threads(1)->Threads(8);
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