67 lines
1.6 KiB
C++
67 lines
1.6 KiB
C++
// Copyright 2020 The gVisor Authors.
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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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#include <stdlib.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <cerrno>
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#include "gtest/gtest.h"
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#include "benchmark/benchmark.h"
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#include "test/util/logging.h"
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#include "test/util/test_util.h"
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#include "test/util/thread_util.h"
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namespace gvisor {
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namespace testing {
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namespace {
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void BM_Pipe(benchmark::State& state) {
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int fds[2];
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TEST_CHECK(pipe(fds) == 0);
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const int size = state.range(0);
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std::vector<char> wbuf(size);
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std::vector<char> rbuf(size);
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RandomizeBuffer(wbuf.data(), size);
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ScopedThread t([&] {
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auto const fd = fds[1];
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for (int i = 0; i < state.max_iterations; i++) {
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TEST_CHECK(WriteFd(fd, wbuf.data(), wbuf.size()) == size);
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}
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});
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for (auto _ : state) {
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TEST_CHECK(ReadFd(fds[0], rbuf.data(), rbuf.size()) == size);
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}
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t.Join();
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close(fds[0]);
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close(fds[1]);
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state.SetBytesProcessed(static_cast<int64_t>(size) *
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static_cast<int64_t>(state.iterations()));
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}
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BENCHMARK(BM_Pipe)->Range(1, 1 << 20)->UseRealTime();
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} // namespace
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} // namespace testing
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} // namespace gvisor
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