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79 lines
2.4 KiB
79 lines
2.4 KiB
/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef SIMPLE_PERF_WORKLOAD_H_
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#define SIMPLE_PERF_WORKLOAD_H_
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#include <sys/types.h>
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#include <chrono>
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#include <functional>
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#include <string>
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#include <vector>
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#include <android-base/macros.h>
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namespace simpleperf {
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class Workload {
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private:
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enum WorkState {
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NotYetCreateNewProcess,
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NotYetStartNewProcess,
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Started,
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Finished,
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};
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public:
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static std::unique_ptr<Workload> CreateWorkload(const std::vector<std::string>& args);
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static std::unique_ptr<Workload> CreateWorkload(const std::function<void()>& function);
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static bool RunCmd(const std::vector<std::string>& args, bool report_error = true);
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~Workload();
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bool Start();
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bool IsStarted() { return work_state_ == Started; }
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pid_t GetPid() { return work_pid_; }
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bool WaitChildProcess(int* exit_code);
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// Set the function used to kill the workload process in ~Workload().
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void SetKillFunction(const std::function<void(pid_t)>& kill_function) {
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kill_function_ = kill_function;
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}
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private:
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explicit Workload(const std::vector<std::string>& args, const std::function<void()>& function);
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bool CreateNewProcess();
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void ChildProcessFn(int start_signal_fd, int exec_child_fd);
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bool WaitChildProcess(bool wait_forever, bool is_child_killed, int* exit_code);
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WorkState work_state_;
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// The child process either executes child_proc_args or run child_proc_function.
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std::vector<std::string> child_proc_args_;
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std::function<void()> child_proc_function_;
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pid_t work_pid_;
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int start_signal_fd_; // The parent process writes 1 to start workload in the child process.
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int exec_child_fd_; // The child process writes 1 to notify that execvp() failed.
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std::function<void(pid_t)> kill_function_;
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DISALLOW_COPY_AND_ASSIGN(Workload);
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};
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} // namespace simpleperf
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#endif // SIMPLE_PERF_WORKLOAD_H_
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