2 * Copyright (C) 2015 The Android Open Source Project
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 #ifndef SIMPLE_PERF_WORKLOAD_H_
18 #define SIMPLE_PERF_WORKLOAD_H_
20 #include <sys/types.h>
26 #include <android-base/macros.h>
31 NotYetCreateNewProcess,
32 NotYetStartNewProcess,
38 static std::unique_ptr<Workload> CreateWorkload(const std::vector<std::string>& args);
39 static std::unique_ptr<Workload> CreateWorkload(const std::function<void ()>& function);
40 static bool RunCmd(const std::vector<std::string>& args, bool report_error = true);
46 return work_state_ == Started;
52 bool WaitChildProcess(int* exit_code);
54 // Set the function used to kill the workload process in ~Workload().
55 void SetKillFunction(const std::function<void (pid_t)>& kill_function) {
56 kill_function_ = kill_function;
60 explicit Workload(const std::vector<std::string>& args, const std::function<void ()>& function);
62 bool CreateNewProcess();
63 void ChildProcessFn(int start_signal_fd, int exec_child_fd);
64 bool WaitChildProcess(bool wait_forever, bool is_child_killed, int* exit_code);
66 WorkState work_state_;
67 // The child process either executes child_proc_args or run child_proc_function.
68 std::vector<std::string> child_proc_args_;
69 std::function<void ()> child_proc_function_;
71 int start_signal_fd_; // The parent process writes 1 to start workload in the child process.
72 int exec_child_fd_; // The child process writes 1 to notify that execvp() failed.
73 std::function<void (pid_t)> kill_function_;
75 DISALLOW_COPY_AND_ASSIGN(Workload);
78 #endif // SIMPLE_PERF_WORKLOAD_H_