SNF4CGP/SNF4CGP/ExecutiveProcess.hpp

// SNF4CGP/ExecutiveProcess.hpp
// Copyright (C) 2009 ARM Research Labs, LLC
// See www.armresearch.com for more information.
//
// SNF4CGP Execuitive Process (Application Object)
// The ExecutiveProcess is responsible for constructing the application, connecting
// it's components, and peforming an orderly startup and shutdown.

#ifndef IncludedExecutiveProcess
#define IncludedExecutiveProcess

#include "JobPool.hpp"
#include "WorkerPool.hpp"
#include "InputProcessor.hpp"
#include "OutputProcessor.hpp"
#include "Command.hpp"

#include <string>

class ExecutiveProcess {                                                        // The executive process...

  private:

    const string VersionInfo;                                                   // Knows Version and
    const string ConfigInfo;                                                    // Configuration.

    JobPool Jobs;                                                               // Keeps pointers to the apps
    WorkerPool Workers;                                                         // components so they can be
    InputProcessor Input;                                                       // created, destroyed and
    OutputProcessor Output;                                                     // connected together.

    unsigned int QuitJobNumber;                                                 // Quit job number 0 until QUIT.

    void initializeOutput();                                                    // These do what they say.
    void initializeJobPool();
    void initializeWorkerPool();
    void shutdownWorkerPool();
    void shutdownJobPool();
    void shutdownOutput();

    void dispatchCommand(Command& C);                                           // Job + Worker + Command; go!
    void dispatchWakeupCommand();

    void notifyQUIT();
    void notifyNOTGOOD();

  public:

    ExecutiveProcess(const string& Version, const string& Config);              // Simple construction. The d'tor needs
    ~ExecutiveProcess();                                                        // to deal with uncerimoneous shutdowns.

    void doStartup();                                                           // The main thread calls these in sequence.
    void doProcessing();
    void doShutdown();
};

#endif