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PsnCoherantMemoryManager.h

Go to the documentation of this file.

/*
 * This file is part of openMask © INRIA, CNRS, Universite de Rennes 1 1993-2002, thereinafter the Software
 * 
 * The Software has been developped within the Siames Project. 
 * INRIA, the University of Rennes 1 and CNRS jointly hold intellectual property rights
 * 
 * The Software has been registered with the Agence pour la Protection des
 * Programmes (APP) under registration number IDDN.FR.001.510008.00.S.P.2001.000.41200
 *
 * This file may be distributed under the terms of the Q Public License
 * version 1.0 as defined by Trolltech AS of Norway and appearing in the file
 * LICENSE.QPL included in the packaging of this file.
 *
 * Licensees holding valid specific licenses issued by INRIA, CNRS or Université de Rennes 1 
 * for the software may use this file in accordance with that specific license *
 */
#ifndef PsnCoherantMemoryManagerHEADER
#define PsnCoherantMemoryManagerHEADER

class PsnMemoryElementDescriptor;
class PsnLock;

#include <PsnSharedMemoryManager.h>

class PsnCoherantMemoryManager : public PsnSharedMemoryManager {
public:
   PsnCoherantMemoryManager(void *startDsm, size_t sizeDsm, size_t pageSize);
   virtual ~PsnCoherantMemoryManager();

   const unsigned int uniqueCreatorDataOffset;

   virtual void sync() ;

   virtual void synchronizeAfterLock(void* beginningAdress, long length);

protected:
   PsnMutexLock _accessToLocalData;

   virtual PsnMemoryElementDescriptor * getFreeMem();

   virtual void setFreeMem(PsnMemoryElementDescriptor *); 

   virtual void lock();

   virtual void unlock();

   virtual bool lockNeeded ( ) ;

   virtual void * getFromFree ( size_t size );

   virtual void addInFree (void *addr, size_t size);

   PsnLock * _myLock;

   PsnSharedMemoryManager * _memoryElementDescriptorMemoryManager ;

   PsnMemoryElementDescriptor * _freeMem ;
};

#endif

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