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