#pragma once

#ifndef _TBIGMEMORYMANAGER_

#define _TBIGMEMORYMANAGER_

class Chunkinfo;

#undef DVAPI

#undef DVVAR

#ifdef TSYSTEM_EXPORTS

#define DVAPI DV_EXPORT_API

#define DVVAR DV_EXPORT_VAR

#else

#define DVAPI DV_IMPORT_API

#define DVVAR DV_IMPORT_VAR

#endif

#include "tcommon.h"

#include "tthreadmessage.h"

class TRaster;

class DVAPI TBigMemoryManager

{

	TThread::Mutex m_mutex;

	UCHAR *m_theMemory;

	std::map<uchar *,="" chunkinfo=""> m_chunks;</uchar>

	UCHAR *allocate(UINT &size);

	TUINT32 m_availableMemory, m_allocatedMemory;

	std::map<uchar *,="" chunkinfo="">::iterator shiftBlock(const std::map<uchar *,="" chunkinfo="">::iterator &it, TUINT32 offset);</uchar></uchar>

	TRaster *findRaster(TRaster *ras);

	void checkConsistency();

	UCHAR *remap(TUINT32 RequestedSize);

	void printLog(TUINT32 size);

public:

	TBigMemoryManager();

	~TBigMemoryManager();

	bool init(TUINT32 sizeinKb);

	bool putRaster(TRaster *ras, bool canPutOnDisk = true);

	bool releaseRaster(TRaster *ras);

	void lock(UCHAR *buffer);

	void unlock(UCHAR *buffer);

	UCHAR *getBuffer(UINT size);

	static TBigMemoryManager *instance();

	bool isActive() const { return m_theMemory != 0; }

	//void releaseSubraster(UCHAR *chunk, TRaster*subRas);

	TUINT32 getAvailableMemoryinKb() const

	{

		assert(m_theMemory != 0);

		return m_availableMemory >> 10;

	}

	void getRasterInfo(int &rasterCount, TUINT32 &totRasterMemInKb, int ¬CachedRasterCount, TUINT32 ¬CachedRasterMemInKb);

#ifdef _DEBUG

	TUINT32 m_totRasterMemInKb;

	void printMap();

#endif

	int getAllocationPeak();

	int getAllocationMean();

	void setRunOutOfContiguousMemoryHandler(void (*callback)(unsigned long size));

private:

	friend class TRaster;

	void (*m_runOutCallback)(unsigned long);

};

#endif