diff -r 000000000000 -r a41df078684a userlibandfileserver/fileserver/sfile/sf_memory_client.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/userlibandfileserver/fileserver/sfile/sf_memory_client.h	Mon Oct 19 15:55:17 2009 +0100
@@ -0,0 +1,76 @@
+// Copyright (c) 2008-2009 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:
+// f32\sfile\sf_memory_client.h
+// 
+//
+
+/**
+ @file
+ @internalTechnology
+ @released
+*/
+
+#if !defined(__SF_MEMORY_CLIENT_H__)
+#define __SF_MEMORY_CLIENT_H__
+
+#include "sf_memory_man.h"
+
+/**
+Cache memory client class, used by various caches as an interface to cache memory manager
+@see CCacheMemoryManager
+*/
+class CCacheMemoryClient : public CBase
+	{
+public:
+	IMPORT_C TUint8* 	AllocateAndLockSegments(TUint32 aSegmentCount);
+	IMPORT_C TInt		LockSegments(TUint8* aStartRamAddr, TUint32 aSegmentCount);
+	IMPORT_C TInt		UnlockSegments(TUint8* aStartRamAddr, TUint32 aSegmentCount);
+	IMPORT_C TInt		DecommitSegments(TUint8* aStartRamAddr, TUint32 aSegmentCount);
+	IMPORT_C void 		Reset();
+
+	void	SetBaseOffset(TUint32 aOffset);
+	TInt	Initialize();
+	static CCacheMemoryClient* NewL(CCacheMemoryManager& aManager, const TDesC& aClientName, TUint32 aOffsetInBytes, TUint32 aMinSizeInSegs, TUint32 aMaxSizeInSegs);	
+	CCacheMemoryClient(CCacheMemoryManager& aManager, TUint32 aMinSizeInSegs, TUint32 aMaxSizeInSegs);
+	~CCacheMemoryClient();
+	TUint32 MaxSizeInBytes();
+	const TDesC& Name() const;
+
+private:
+	void ConstructL(const TDesC& aClientName, TUint32 aOffsetInBytes);
+
+private:
+	CCacheMemoryManager& iManager;		///< reference of the cache memory manager it registers with
+	HBufC*	iName;						///< a unique identifier of the client
+	TUint8* iBase;						///< the base address of the client memory space
+	TUint32	iMinSizeInSegs;				///< the minimum size of the client in segments
+	TUint32	iMaxSizeInSegs;				///< the maximum size of the client in segments
+
+	/** an indicator in segment number, indicates how many segments has been used, 
+	note this figure never decrease, unless it is reset when disconnection happens */
+	TUint32	iTouchedRegionFlag;			 
+
+	/** an indicator in segment number, indicates how many segments should be reserved 
+	for permenently locked pages */	
+	TUint32 iReservedRegionMarkInSegs;
+
+	/** an array holds all the pages that can be reused, i.e. decommited pages	*/
+	RArray<TUint8*>	iReusablePagePool;
+	
+	TUint32 iSegSizeInBytes;
+	TUint iSegSizeInBytesLog2; 
+	friend class CCacheMemoryManager;
+	};
+
+#endif //__SF_MEMORY_CLIENT_H__