--- /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__