TCLLiveEventLoop.h

#ifndef TCLLIVEEVENTLOOP_H
#define TCLLIVEEVENTLOOP_H
/*
    This software is Copyright by the Board of Trustees of Michigan
    State University (c) Copyright 2005.

    You may use this software under the terms of the GNU public license
    (GPL).  The terms of this license are described at:

     http://www.gnu.org/licenses/gpl.txt

     Author:
             Ron Fox
         NSCL
         Michigan State University
         East Lansing, MI 48824-1321
*/
// Includes


#include <string>



// Forward definitions:

class CTCLInterpreter;
class CTCLVariable;
class CTCLStdioCommander;


class CTCLLiveEventLoop {
  // private data:
private:

  static CTCLLiveEventLoop* m_pTheInstance;
  CTCLInterpreter*         m_pStdinTarget;
  bool                     m_isRunning;
  long                     m_stopLatency;
  CTCLStdioCommander*      m_pEventCommander;

  // constructors are private to support singleton enforcement:

private:
  CTCLLiveEventLoop();
  ~CTCLLiveEventLoop();

  // Cut off other attempts to create copies of the event loop object:

  CTCLLiveEventLoop(const CTCLLiveEventLoop&);
  CTCLLiveEventLoop& operator=(const CTCLLiveEventLoop&);
  int operator==(const CTCLLiveEventLoop&) const;
  int operator!=(const CTCLLiveEventLoop&) const;

  // Obtaining the singleton:

public:
  static CTCLLiveEventLoop*  getInstance();

  // Operators on the object:

  void start();                 // Event loop targeting gpApplication's interpreter.
  void start(CTCLInterpreter* pInterp); // Event loop targeting some other interp. 
  void stop();

  long setStopLatency(long ms);
  long getStopLatency() const;

  // Utilities:

private:

  void eventLoop();     // The event loop itself.
  void stopEvents();

};


#endif