// Copyright (c) 2006-2010 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:

// Syborg Virtual Hardware Memory implementation

/**

 @file

 @internalTechnology

 @prototype

*/

#ifndef __SYBORGVIRTUALHWMEMORY_H__

#define __SYBORGVIRTUALHWMEMORY_H__

#include <klib.h>

#include <graphics/virtualvideohwinterface.h>

#include <graphics/guestvideodriverinterfaceconstants.h>

/**

Very simple memory manager for platsim virtual HW memory

*/

class DVirtualHWMemoryManager: public DBase

    {

    struct TAllocatedCell

        {

        TAllocatedCell( TInt aSize, TUint32 aBase ):

            iSize( aSize ),

            iBase( aBase ),

            iNext( NULL )

            {

            }

        TInt iSize;

        TUint32 iBase;

        TAllocatedCell* iNext;

        };

public:

    DVirtualHWMemoryManager(TUint32 aBase, TInt aMaxSize);

    TUint32 Allocate(TInt aSize);

    void Deallocate(const TUint32 aPhysicalAddress);

    ~DVirtualHWMemoryManager();

private:

    TAllocatedCell iRoot;

    TAllocatedCell iLast;

    };

#endif