1 /*

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

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:

    15 *

    16 */

    17 

    18 #ifndef MEMSPYDRIVERXFERBUFFER_H

    19 #define MEMSPYDRIVERXFERBUFFER_H

    20 

    21 // System includes

    22 #include <e32cmn.h>

    23 #include <kernel.h>

    24 

    25 // Classes referenced

    26 class DMemSpyDriverDevice;

    27 

    28 

    29 class DMemSpyDriverXferBuffer : public DBase

    30 	{

    31     friend class RMemSpyMemStreamWriter;

    32 

    33 public:

    34 	DMemSpyDriverXferBuffer( DMemSpyDriverDevice& aDevice, DThread& aThread );

    35 	~DMemSpyDriverXferBuffer();

    36     TInt Construct( TInt aSize );

    37 

    38 public: // API

    39     TInt Size() const;

    40     TInt GrowBy( TInt aSize );

    41     TInt EnsureCapacity( TInt aSize );

    42     void Reset();

    43 

    44 private: // Internal methods

    45     TInt WriteToClient( TDes8* aDestinationPointer, TInt aLength );

    46     DThread& ClientThread();

    47     TUint8* Ptr();

    48 

    49 private: // Data members

    50     DMemSpyDriverDevice& iDevice;

    51 	DThread& iClientThread;

    52     TInt iSize;

    53     TAny* iBuffer;

    54 	};

    55 

    56 

    57 

    58 #endif