67 lines
2.0 KiB
C++
67 lines
2.0 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 <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include "gtest/gtest.h"
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#include "benchmark/benchmark.h"
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#include "test/util/fs_util.h"
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#include "test/util/temp_path.h"
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#include "test/util/test_util.h"
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namespace gvisor {
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namespace testing {
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namespace {
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// Creates a directory containing `files` files, and unlinks all the files.
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void BM_Unlink(benchmark::State& state) {
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// Create directory with given files.
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const int file_count = state.range(0);
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// We unlink all files on each iteration, but report this as a "batch"
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// iteration so that reported times are per file.
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TempPath dir;
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while (state.KeepRunningBatch(file_count)) {
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state.PauseTiming();
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// N.B. dir is declared outside the loop so that destruction of the previous
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// iteration's directory occurs here, inside of PauseTiming.
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dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir());
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std::vector<TempPath> files;
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for (int i = 0; i < file_count; i++) {
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TempPath file =
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ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(dir.path()));
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files.push_back(std::move(file));
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}
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state.ResumeTiming();
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while (!files.empty()) {
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// Destructor unlinks.
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files.pop_back();
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}
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}
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state.SetItemsProcessed(state.iterations());
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}
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BENCHMARK(BM_Unlink)->Range(1, 100 * 1000)->UseRealTime();
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} // namespace
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} // namespace testing
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} // namespace gvisor
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