1 /*
2 * Copyright (c) Huawei Technologies Co., Ltd. 2020-2023. All rights reserved.
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 "sys/select.h"
17 #include "sys/time.h"
18 #include "sys/types.h"
19 #include "unistd.h"
20 #include "util.h"
21
22 using namespace std;
23
24 constexpr int MAX_MONITOR_FDS = 2;
25
Bm_function_Select(benchmark::State & state)26 static void Bm_function_Select(benchmark::State &state)
27 {
28 fd_set readfds;
29 fd_set writefds;
30 FD_ZERO(&readfds);
31 FD_ZERO(&writefds);
32 FD_SET(0, &readfds);
33 FD_SET(1, &writefds);
34 for (auto _ : state) {
35 benchmark::DoNotOptimize(select(MAX_MONITOR_FDS, &readfds, &writefds, 0, 0));
36 }
37 state.SetItemsProcessed(state.iterations());
38 }
39
40 MUSL_BENCHMARK(Bm_function_Select);