/*

* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  

*

*/

#ifndef __FASTALLOCATOR_H__

#define __FASTALLOCATOR_H__

#include <e32base.h>

#include <e32cmn.h>

#ifdef TRACK_ALLOCATIONS

typedef struct {

	TInt requestedSize;

	TUint32 cellId; 

}THeapTrace;

TAny* GetRealPtrFromClientPtr(TAny* aClientPtr);

void  DecreaseSizeInPlace(TInt& aSize);

class CMemoryPool;

TAny* TraceAlloc(CMemoryPool* aPool, TInt* aSize, TUint32* aCellId);

void TraceFree(TAny **aPtr);

TBool TracePreRealloc(TAny** aPtr, TInt *aSize, TUint32& aOriginalCellId);

void TracePostRealloc(TAny** p, TInt aRequestedSize, TUint32* aNewCellId, TUint32 aOriginalCellId, TBool aIssueNewCellId);

#endif

class CFastMemoryPool;

class RFastAllocator : public RAllocator

{

public:

	IMPORT_C RFastAllocator(CFastMemoryPool*);

    IMPORT_C ~RFastAllocator();

	IMPORT_C TAny* Alloc(TInt aSize);

	IMPORT_C void Free(TAny* aPtr);

	IMPORT_C TAny* ReAlloc(TAny* aPtr, TInt aSize, TInt aMode=0);

	IMPORT_C TInt AllocLen(const TAny* aCell) const;

	IMPORT_C TInt Compress();

	IMPORT_C void Reset();

	IMPORT_C TInt AllocSize(TInt& aTotalAllocSize) const;

	IMPORT_C TInt Available(TInt& aBiggestBlock) const;

	IMPORT_C TInt DebugFunction(TInt aFunc, TAny* a1=NULL, TAny* a2=NULL);

	IMPORT_C TInt Extension_(TUint aExtensionId, TAny*& a0, TAny* a1);

private:

    TBool IsLocatedInHeap( TAny* aPtr ) const;

    RHeap& iHeap;

    TUint32 iHeapBase;

    CFastMemoryPool* iPool;

#ifdef TRACK_ALLOCATIONS

    TUint32 iNextCellId;

#endif

  };

class CNewSymbianHeapPool;

NONSHARABLE_CLASS(RSymbianDlAllocatorWrapper) : public RAllocator

{

public:

	RSymbianDlAllocatorWrapper(CNewSymbianHeapPool*);

    ~RSymbianDlAllocatorWrapper();

	TAny* Alloc(TInt aSize);

	void Free(TAny* aPtr);

	TAny* ReAlloc(TAny* aPtr, TInt aSize, TInt aMode=0);

	TInt AllocLen(const TAny* aCell) const;

	TInt Compress();

	void Reset();

	TInt AllocSize(TInt& aTotalAllocSize) const;

	TInt Available(TInt& aBiggestBlock) const;

	TInt DebugFunction(TInt aFunc, TAny* a1=NULL, TAny* a2=NULL);

	TInt Extension_(TUint aExtensionId, TAny*& a0, TAny* a1);

private:

    CNewSymbianHeapPool* iPool;

#ifdef TRACK_ALLOCATIONS

    TUint32 iNextCellId;

#endif

  };

#endif //!__FASTALLOCATOR_H__