cscheduler.h

//=========================================================================
//  CSCHEDULER.H - part of
//
//                  OMNeT++/OMNEST
//           Discrete System Simulation in C++
//
//  Author: Andras Varga, 2003
//          Dept. of Electrical and Computer Systems Engineering,
//          Monash University, Melbourne, Australia
//
//=========================================================================

/*--------------------------------------------------------------*
  Copyright (C) 2003-2008 Andras Varga
  Copyright (C) 2006-2008 OpenSim Ltd.

  This file is distributed WITHOUT ANY WARRANTY. See the file
  `license' for details on this and other legal matters.
*--------------------------------------------------------------*/

#ifndef __CSCHEDULER_H
#define __CSCHEDULER_H

#include "cobject.h"
#include "platdep/timeutil.h"  // for timeval

NAMESPACE_BEGIN

// forward declarations
class cSimulation;
class cMessage;

class SIM_API cScheduler : public cObject
{
  protected:
    cSimulation *sim;

  public:
    cScheduler();

    virtual ~cScheduler();

    virtual void setSimulation(cSimulation *_sim);

    virtual void startRun() = 0;

    virtual void endRun() = 0;

    virtual void executionResumed()  {}

    virtual cMessage *getNextEvent() = 0;
};

class SIM_API cSequentialScheduler : public cScheduler
{
  public:
    cSequentialScheduler() {}

    virtual void startRun() {}

    virtual void endRun() {}

    virtual cMessage *getNextEvent();
};


class SIM_API cRealTimeScheduler : public cScheduler
{
  protected:
    // configuration:
    bool doScaling;
    double factor;

    // state:
    timeval baseTime;

    bool waitUntil(const timeval& targetTime);

  public:
    cRealTimeScheduler() : cScheduler()  {}

    virtual ~cRealTimeScheduler() {}

    virtual void startRun();

    virtual void endRun();

    virtual void executionResumed();

    virtual cMessage *getNextEvent();
};

NAMESPACE_END


#endif