39 lines
1.2 KiB
C++
39 lines
1.2 KiB
C++
/*
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* Copyright (C) 2023 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 <fcntl.h>
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#include <sys/mman.h>
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#include <unistd.h>
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#include <benchmark/benchmark.h>
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#include "android-base/file.h"
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#include "android-base/logging.h"
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static void BenchmarkReadFdToString(benchmark::State& state) {
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android::base::unique_fd fd(memfd_create("memfile", 0));
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CHECK(fd.get() > 0);
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CHECK_EQ(ftruncate(fd, state.range(0)), 0);
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for (auto _ : state) {
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CHECK_EQ(lseek(fd, 0, SEEK_SET), 0);
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std::string str;
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benchmark::DoNotOptimize(android::base::ReadFdToString(fd, &str));
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}
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state.SetBytesProcessed(state.iterations() * state.range(0));
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}
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BENCHMARK_RANGE(BenchmarkReadFdToString, 0, 1024 * 1024);
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