--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/kernel/eka/include/memmodel/epoc/mmubase/defrag.h	Thu Dec 17 09:24:54 2009 +0200
@@ -0,0 +1,65 @@
+// Copyright (c) 2007-2009 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:
+// e32\include\memmodel\epoc\mmubase\defrag.h
+// 
+//
+
+#ifndef __DEFRAG_H__
+#define __DEFRAG_H__
+
+/******************************************************************************
+ * Base class for RAM defragmentation implementation
+ ******************************************************************************/
+
+struct SZone;
+class DRamAllocator;
+/**
+@internalComponent
+*/
+class Defrag
+	{
+public:
+	enum TPanic
+		{
+		EDfcQInitFailed=0,
+		};
+
+public:
+	
+	// platform independent - defragbase.cpp
+	Defrag();
+	void Init3(DRamAllocator* aRamAllocator);
+	static void DefragTask(TAny* aArg);
+private:
+	TInt GeneralDefrag(TRamDefragRequest* aRequest);
+	TInt ClaimRamZone(TRamDefragRequest* aRequest);
+	TInt EmptyRamZone(TRamDefragRequest* aRequest);
+	TInt ClearZone(SZone& aZone, TUint aMaxRetries, TRamDefragRequest* aRequest);
+	TInt ClearMovableFromZone(SZone& aZone, TBool aBestEffort, TRamDefragRequest* aRequest);
+	TInt ClearDiscardableFromZone(SZone& aZone, TBool aBestEffort, TRamDefragRequest* aRequest, TUint* aMaxDiscard=NULL);
+	static void Panic(TPanic aPanic);
+
+	// data
+
+private:
+	TInt iDefragPriority;
+	TDfcQue iTaskQ;
+	DRamAllocator* iRamAllocator;
+
+	static Defrag* TheDefrag; // single instance of the defragmentor
+
+	friend class TRamDefragRequest;	// This needs access to iDefragPriority and iTaskQ
+	};
+
+#endif