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 #ifdef LOCK_TO_CPU
18 #include <limits.h>
19 #include <sched.h>
20 #include <string>
21 #include <vector>
22 #include "dfx_log.h"
23 #include "string_util.h"
24 #endif
25
26 using namespace OHOS::HiviewDFX;
27 using namespace std;
28
29 #ifdef LOCK_TO_CPU
LockToCpu(int lockCpu)30 static bool LockToCpu(int lockCpu)
31 {
32 cpu_set_t cpuSet;
33 CPU_ZERO(&cpuSet);
34 CPU_SET(lockCpu, &cpuSet);
35 if (sched_setaffinity(0, sizeof(cpuSet), &cpuSet) != 0) {
36 if (errno == EINVAL) {
37 LOGW("Invalid cpu %d", lockCpu);
38 } else {
39 LOGE("sched_setaffinity failed");
40 }
41 return false;
42 }
43
44 LOGI("Locked to cpu %d\n", lockCpu);
45 return true;
46 }
47
main(int argc,char ** argv)48 int main(int argc, char** argv)
49 {
50 std::vector<char*> newArgv;
51 newArgv.push_back(argv[0]);
52 // Look for the special option --benchmark_lock_cpu.
53 int lockCpu = -1;
54 for (int i = 1; i < argc; i++) {
55 if (StartsWith(argv[i], "--benchmark_cpu=")) {
56 char* endptr = nullptr;
57 long cpu = strtol(&argv[i][16], &endptr, 10);
58 if (endptr == nullptr || *endptr != '\0' || cpu > INT_MAX || cpu < 0) {
59 LOGW("Malformed value for --benchmark_cpu, requires a valid positive number.");
60 return 1;
61 }
62 lockCpu = cpu;
63 } else {
64 newArgv.push_back(argv[i]);
65 }
66 }
67 newArgv.push_back(nullptr);
68 if (lockCpu != -1 && !LockToCpu(lockCpu)) {
69 return 1;
70 }
71
72 int newArgc = newArgv.size() - 1;
73 ::benchmark::Initialize(&newArgc, newArgv.data());
74 if (::benchmark::ReportUnrecognizedArguments(newArgc, newArgv.data())) {
75 return 1;
76 }
77 ::benchmark::RunSpecifiedBenchmarks();
78 ::benchmark::Shutdown();
79 }
80
81 #else
82
83 BENCHMARK_MAIN();
84 #endif