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// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of the License "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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// f32\sfile\sf_memory_client.h
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//
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//
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/**
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@file
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@internalTechnology
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@released
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*/
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#if !defined(__SF_MEMORY_CLIENT_H__)
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#define __SF_MEMORY_CLIENT_H__
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#include "sf_memory_man.h"
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/**
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Cache memory client class, used by various caches as an interface to cache memory manager
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@see CCacheMemoryManager
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*/
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class CCacheMemoryClient : public CBase
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{
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public:
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IMPORT_C TUint8* AllocateAndLockSegments(TUint32 aSegmentCount);
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IMPORT_C TInt LockSegments(TUint8* aStartRamAddr, TUint32 aSegmentCount);
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IMPORT_C TInt UnlockSegments(TUint8* aStartRamAddr, TUint32 aSegmentCount);
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IMPORT_C TInt DecommitSegments(TUint8* aStartRamAddr, TUint32 aSegmentCount);
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IMPORT_C void Reset();
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void SetBaseOffset(TUint32 aOffset);
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TInt Initialize();
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static CCacheMemoryClient* NewL(CCacheMemoryManager& aManager, const TDesC& aClientName, TUint32 aOffsetInBytes, TUint32 aMinSizeInSegs, TUint32 aMaxSizeInSegs);
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CCacheMemoryClient(CCacheMemoryManager& aManager, TUint32 aMinSizeInSegs, TUint32 aMaxSizeInSegs);
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~CCacheMemoryClient();
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TUint32 MaxSizeInBytes();
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const TDesC& Name() const;
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private:
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void ConstructL(const TDesC& aClientName, TUint32 aOffsetInBytes);
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private:
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CCacheMemoryManager& iManager; ///< reference of the cache memory manager it registers with
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HBufC* iName; ///< a unique identifier of the client
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TUint8* iBase; ///< the base address of the client memory space
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TUint32 iMinSizeInSegs; ///< the minimum size of the client in segments
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TUint32 iMaxSizeInSegs; ///< the maximum size of the client in segments
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/** an indicator in segment number, indicates how many segments has been used,
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note this figure never decrease, unless it is reset when disconnection happens */
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TUint32 iTouchedRegionFlag;
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/** an indicator in segment number, indicates how many segments should be reserved
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for permenently locked pages */
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TUint32 iReservedRegionMarkInSegs;
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/** an array holds all the pages that can be reused, i.e. decommited pages */
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RArray<TUint8*> iReusablePagePool;
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TUint32 iSegSizeInBytes;
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TUint iSegSizeInBytesLog2;
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friend class CCacheMemoryManager;
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};
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#endif //__SF_MEMORY_CLIENT_H__
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