1 /* 2 * Copyright (c) 2023 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #include <benchmark/benchmark.h> 17 #include "sys/types.h" 18 #include "dirent.h" 19 #include "util.h" 20 21 using namespace std; 22 Bm_function_Opendir(benchmark::State & state)23static void Bm_function_Opendir(benchmark::State &state) 24 { 25 for (auto _ : state) { 26 DIR *dir = opendir("/dev/block"); 27 if (dir == nullptr) { 28 perror("opendir proc"); 29 exit(EXIT_FAILURE); 30 } 31 benchmark::DoNotOptimize(dir); 32 state.PauseTiming(); 33 closedir(dir); 34 state.ResumeTiming(); 35 } 36 } 37 38 MUSL_BENCHMARK(Bm_function_Opendir);