MemoryManagerMemMap.h

Go to the documentation of this file.

/* ========================================================================
* PROJECT: ARToolKitPlus
* ========================================================================
* This work is based on the original ARToolKit developed by
*   Hirokazu Kato
*   Mark Billinghurst
*   HITLab, University of Washington, Seattle
* http://www.hitl.washington.edu/artoolkit/
*
* Copyright of the derived and new portions of this work
*     (C) 2006 Graz University of Technology
*
* This framework is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This framework 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this framework; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*
* For further information please contact 
*   Dieter Schmalstieg
*   <schmalstieg@icg.tu-graz.ac.at>
*   Graz University of Technology, 
*   Institut for Computer Graphics and Vision,
*   Inffeldgasse 16a, 8010 Graz, Austria.
* ========================================================================
** @author   Daniel Wagner
*
* $Id: MemoryManagerMemMap.h 162 2006-04-19 21:28:10Z grabner $
* @file
* ======================================================================== */

#ifndef __ARTOOLKITPLUS_MEMORYMANAGERMEMMAP_HEADERFILE__
#define __ARTOOLKITPLUS_MEMORYMANAGERMEMMAP_HEADERFILE__

#if defined(_MSC_VER) || defined(_WIN32_WCE)

#include "MemoryManager.h"
#include <windows.h>


namespace ARToolKitPlus
{



class ARTOOLKITPLUS_API MemoryManagerMemMap : public MemoryManager
{
public:
        MemoryManagerMemMap();
        ~MemoryManagerMemMap();

        bool init(size_t nNumInitialBytes, size_t nNumGrowBytes=0);
        bool deinit();
        bool didInit();

        unsigned int getBytesAllocated()  {  return (int)fullSize;  }

        void* getMemory(size_t nNumBytes);
        void releaseMemory(void* nMemoryBlock);

protected:
        bool _didInit;

        LPVOID lpvMem;      // pointer to shared memory
        HANDLE hMapObject;  // handle to file mapping

        size_t  fullSize,
                        reservedSize;
};


}  // namespace ARToolKitPlus


#endif

#endif //__ARTOOLKITPLUS_MEMORYMANAGERMEMMAP_HEADERFILE__