57 lines
1.5 KiB
C++
57 lines
1.5 KiB
C++
// Copyright 2020 The gVisor 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 <fcntl.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
|
|
#include <memory>
|
|
#include <string>
|
|
#include <vector>
|
|
|
|
#include "gtest/gtest.h"
|
|
#include "benchmark/benchmark.h"
|
|
#include "test/util/fs_util.h"
|
|
#include "test/util/logging.h"
|
|
#include "test/util/temp_path.h"
|
|
|
|
namespace gvisor {
|
|
namespace testing {
|
|
|
|
namespace {
|
|
|
|
void BM_Open(benchmark::State& state) {
|
|
const int size = state.range(0);
|
|
std::vector<TempPath> cache;
|
|
for (int i = 0; i < size; i++) {
|
|
auto path = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile());
|
|
cache.emplace_back(std::move(path));
|
|
}
|
|
|
|
unsigned int seed = 1;
|
|
for (auto _ : state) {
|
|
const int chosen = rand_r(&seed) % size;
|
|
int fd = open(cache[chosen].path().c_str(), O_RDONLY);
|
|
TEST_CHECK(fd != -1);
|
|
close(fd);
|
|
}
|
|
}
|
|
|
|
BENCHMARK(BM_Open)->Range(1, 128)->UseRealTime();
|
|
|
|
} // namespace
|
|
|
|
} // namespace testing
|
|
} // namespace gvisor
|