ProcessController.h

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/*******************************************************************************
  Copyright(c) 2022 Ludovic Pollet. All rights reserved.
 
 This library is free software; you can redistribute it and/or
 modify it under the terms of the GNU Library General Public
 License version 2 as published by the Free Software Foundation.
 
 This library is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 Library General Public License for more details.
 
 You should have received a copy of the GNU Library General Public License
 along with this library; see the file COPYING.LIB.  If not, write to
 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 Boston, MA 02110-1301, USA.
*******************************************************************************/
 
#ifndef PROCESS_CONTROLLER_H_
#define PROCESS_CONTROLLER_H_ 1
 
#include <string>
#include <vector>
#include <list>
 
 
class ProcessController {
    pid_t pid;
    int status;
    std::string cmd;
 
    void finish();
public:
    ProcessController();
    ~ProcessController();
 
    void start(const std::string & path, const std::vector<std::string>  & args);
 
    void expectDone();
    void expectAlive();
    void expectExitCode(int e);
    void join();
    void kill();
 
    void waitProcessEnd(int expectedExitCode);
 
    // Returns 0 on some system. Use checkOpenFdCount for actual verification
    int getOpenFdCount();
 
    void checkOpenFdCount(int expected, const std::string & msg);
};
 
 
#endif // PROCESS_CONTROLLER_H_