66 lines
1.7 KiB
C++
66 lines
1.7 KiB
C++
/*
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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 <string>
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#include <vector>
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#include <android-base/macros.h>
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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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};
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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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~Workload();
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bool Start();
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pid_t GetPid() {
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return work_pid_;
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}
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private:
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Workload(const std::vector<std::string>& args)
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: work_state_(NotYetCreateNewProcess),
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args_(args),
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work_pid_(-1),
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start_signal_fd_(-1),
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exec_child_fd_(-1) {
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}
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bool CreateNewProcess();
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bool WaitChildProcess(bool wait_forever);
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WorkState work_state_;
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std::vector<std::string> args_;
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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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DISALLOW_COPY_AND_ASSIGN(Workload);
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};
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#endif // SIMPLE_PERF_WORKLOAD_H_
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