perfsrv/memspy/Driver/Kernel/Include/SubChannels/MemSpyDriverLogChanHeapWalk.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Fri, 17 Sep 2010 08:38:31 +0300
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/*
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* Copyright (c) 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 "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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*
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*/
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#ifndef MEMSPYDRIVERLOGICALCHANHEAPWALK_H
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#define MEMSPYDRIVERLOGICALCHANHEAPWALK_H
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// System includes
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#include <e32cmn.h>
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#include <kern_priv.h>
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#ifdef __MARM__
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#include <arm.h>
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#endif
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#include <memspy/driver/memspydriverobjectsshared.h>
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#include <memspy/driver/memspydriverenumerationsshared.h>
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// User includes
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#include "MemSpyDriverOpCodes.h"
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#include "MemSpyDriverHeapWalker.h"
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#include "MemSpyDriverObjectsInternal.h"
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#include "MemSpyDriverLogChanHeapBase.h"
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#include "MemSpyDriverEnumerationsInternal.h"
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// Classes referenced
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class DMemSpyDriverDevice;
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class TMemSpyDriverLogChanHeapWalkObserver;
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class DMemSpyDriverLogChanHeapWalk : public DMemSpyDriverLogChanHeapBase
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	{
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public:
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	DMemSpyDriverLogChanHeapWalk( DMemSpyDriverDevice& aDevice, DThread& aThread );
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	~DMemSpyDriverLogChanHeapWalk();
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private: // from DMemSpyDriverLogChanBase
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	TInt Request( TInt aFunction, TAny* a1, TAny* a2 );
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    TBool IsHandler( TInt aFunction ) const;
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private: // Channel operation handlers
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    TInt WalkHeapInit( TMemSpyDriverInternalWalkHeapParamsInit* aParams );
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    TInt WalkHeapNextCell( TUint aTid, TMemSpyDriverInternalWalkHeapParamsCell* aParams );
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    TInt WalkHeapClose();
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    TInt WalkHeapReadCellData( TMemSpyDriverInternalWalkHeapCellDataReadParams* aParams);
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    TInt WalkHeapGetCellInfo( TAny* aCellAddress, TMemSpyDriverInternalWalkHeapParamsCell* aParams );
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private: // Internal methods
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    const TMemSpyDriverInternalWalkHeapParamsCell* CellInfoForAddressWithinCellRange( TAny* aAddress ) const;
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    const TMemSpyDriverInternalWalkHeapParamsCell* CellInfoForSpecificAddress( TAny* aAddress ) const;
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private: // Heap walker callback
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    TBool WalkerHandleHeapCell(TMemSpyDriverCellType aCellType, TAny* aCellAddress, TInt aLength, TInt aNestingLevel, TInt aAllocNumber );
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private:
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    TBool iHeapWalkInitialised;
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    TInt iWalkHeapCellIndex;
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    RMemSpyDriverRHeapUser iWalkHeap;
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	RArray< TMemSpyDriverInternalWalkHeapParamsCell > iWalkHeapCells;
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    TMemSpyDriverInternalWalkHeapParamsInit iHeapWalkInitialParameters;
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private:
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    friend class TMemSpyDriverLogChanHeapWalkObserver;
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	};
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class TMemSpyDriverLogChanHeapWalkObserver : public MMemSpyHeapWalkerObserver
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    {
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public:
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    inline TMemSpyDriverLogChanHeapWalkObserver( DMemSpyDriverLogChanHeapWalk& aChannel )
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        : iChannel( aChannel )
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        {
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        }
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public: // From MHeapWalkerObserver
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    void HandleHeapWalkInit() { }
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    TBool HandleHeapCell(TMemSpyDriverCellType aCellType, TAny* aCellAddress, TInt aLength, TInt aNestingLevel, TInt aAllocNumber )
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        {
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        return iChannel.WalkerHandleHeapCell( aCellType, aCellAddress, aLength, aNestingLevel, aAllocNumber );
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        }
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private:
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    DMemSpyDriverLogChanHeapWalk& iChannel;
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    };
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#endif