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Kernel.h

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/*************** <auto-copyright.pl BEGIN do not edit this line> **************
 *
 * VR Juggler is (C) Copyright 1998-2003 by Iowa State University
 *
 * Original Authors:
 *   Allen Bierbaum, Christopher Just,
 *   Patrick Hartling, Kevin Meinert,
 *   Carolina Cruz-Neira, Albert Baker
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * 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; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 * -----------------------------------------------------------------
 * File:          $RCSfile: Kernel.h,v $
 * Date modified: $Date: 2004/01/24 20:59:11 $
 * Version:       $Revision: 1.96 $
 * -----------------------------------------------------------------
 *
 *************** <auto-copyright.pl END do not edit this line> ***************/

#ifndef _VRJ_KERNEL_H_
#define _VRJ_KERNEL_H_
//#pragma once

#include <vrj/vrjConfig.h>
#include <vector>

#include <vpr/Util/Singleton.h>
#include <vpr/Sync/CondVar.h>
#include <jccl/RTRC/ConfigElementHandler.h>
#include <gadget/Type/DigitalInterface.h>

namespace gadget
{
   class InputManager;
}

namespace cluster
{
   class ClusterManager;
}

namespace vpr
{
   class BaseThread;
}

namespace vrj
{

class DisplayManager;
class DrawManager;
class SoundManager;
class User;
class App;


class VJ_CLASS_API Kernel : public jccl::ConfigElementHandler
{
public:

   int start();

   void stop();

   bool isRunning() const
   {
      return mIsRunning;
   }

   void waitForKernelStop();

   void initConfig();

   void controlLoop(void* nullParam);

   void setApplication(vrj::App* newApp);

   void loadConfigFile(const char* filename)
   {
      std::string filename_str = std::string(filename);
      loadConfigFile(filename_str);
   }

   void loadConfigFile(std::string filename);

   void scanForConfigDefinitions(const std::string& path);


protected:  // -- CONFIG ELEMENT HANDLER
   virtual bool configCanHandle(jccl::ConfigElementPtr element);

   virtual bool configAdd(jccl::ConfigElementPtr element);

   virtual bool configRemove(jccl::ConfigElementPtr element);

protected:  // Local config functions
   bool addUser(jccl::ConfigElementPtr element);

   bool removeUser(jccl::ConfigElementPtr element);

protected:
   void updateFrameData();

   void checkForReconfig();

   void changeApplication(vrj::App* newApp);

   void initSignalButtons();

   void checkSignalButtons();

protected:      // --- DRAW MGR ROUTINES --- //
   void startDrawManager(bool newMgr);

   void stopDrawManager();

public:      // Global "get" interface

   gadget::InputManager* getInputManager();

   vrj::User* getUser(const std::string& userName);

   std::vector<vrj::User*> getUsers()
   {
      return mUsers;
   }

   const vpr::BaseThread* getThread()
   {
      return mControlThread;
   }

protected:
   vrj::App*      mApp;                         
   vrj::App*      mNewApp;                      
   bool           mNewAppSet;                   
   bool               mIsRunning;               
   bool               mExitFlag;                
   vpr::BaseThread*   mControlThread;           
   vpr::CondVar       mExitWaitCondVar;         
   gadget::InputManager*      mInputManager;          
   DrawManager*               mDrawManager;           
   SoundManager*              mSoundManager;          
   DisplayManager*            mDisplayManager;        
   cluster::ClusterManager*   mClusterManager;        

   std::vector<vrj::User*>   mUsers;    

   gadget::DigitalInterface   mStopKernelSignalButton;

   // ----------------------- //
   // --- SINGLETON STUFF --- //
   // ----------------------- //
protected:
   Kernel();

   Kernel(const vrj::Kernel& k) : jccl::ConfigElementHandler() {;}
   void operator=(const vrj::Kernel& k) {;}

   virtual ~Kernel()
   {;}

   vprSingletonHeader( Kernel );
};

} // end namespace

#endif

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