/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). 

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "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:

*

*/

#ifndef MEMSPYDRIVERLOGICALCHANHEAPBASE_H

#define MEMSPYDRIVERLOGICALCHANHEAPBASE_H

// System includes

#include <kern_priv.h>

#include <memspy/driver/memspydriverobjectsshared.h>

#include <memspy/driver/memspydriverenumerationsshared.h>

// User includes

#include "MemSpyDriverOpCodes.h"

#include "MemSpyDriverLogChanBase.h"

#include "MemSpyDriverObjectsInternal.h"

#include "MemSpyDriverHeapWalker.h"

#include "MemSpyDriverEnumerationsInternal.h"

// Classes referenced

class TMemSpyHeapInfo;

class DMemSpyDriverDevice;

class RMemSpyDriverRHeapUser;

class RMemSpyMemStreamWriter;

class RMemSpyDriverRHeapKernelInPlace;

class RMemSpyDriverRHeapKernelFromCopy;

class DMemSpyDriverLogChanHeapBase : public DMemSpyDriverLogChanBase, public MMemSpyHeapWalkerObserver

	{

public:

    enum TDrmMatchType

        {

        EMatchTypeNone = 0,

        EMatchTypeName,

        EMatchTypeUid

        };

public:

	~DMemSpyDriverLogChanHeapBase();

protected:

	DMemSpyDriverLogChanHeapBase( DMemSpyDriverDevice& aDevice, DThread& aThread );

    TInt Construct();

protected: // From DMemSpyDriverLogChanBase

    TInt Request( TInt aFunction, TAny* a1, TAny* a2 );

protected: // Capability checks for heap access

    TDrmMatchType IsDrmThread( DThread& aThread );

protected: // From MHeapWalkerObserver

    void HandleHeapWalkInit();

    TBool HandleHeapCell( TMemSpyDriverCellType aCellType, TAny* aCellAddress, TInt aLength, TInt aNestingLevel, TInt aAllocNumber );

protected: // Heap utility functions

    TInt OpenKernelHeap( RHeapK*& aHeap, DChunk*& aChunk, TDes8* aClientHeapChunkName = NULL );

    TInt OpenKernelHeap( RMemSpyDriverRHeapKernelFromCopy& aHeap, TDes8* aClientHeapChunkName = NULL );

    TInt GetHeapInfoKernel(RMemSpyDriverRHeapBase& aHeap, TMemSpyHeapInfo* aHeapInfo, TDes8* aTransferBuffer);

    void PrintHeapInfo( const TMemSpyHeapInfo& aInfo );

private: // Data members

    // Points to stack-based object whilst walking in progress

    RMemSpyMemStreamWriter* iStackStream;

    TInt iFreeCellCount;

	};

#endif