// 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: Implementation of the asynchronous allocation support for the

// comms buffers

//

#ifndef __COMMSBUFASYNCREQINTERNAL_H__

#define __COMMSBUFASYNCREQINTERNAL_H__

#include <e32base.h>

#include <es_commsbuf.h>

#include <comms-infras/commsbufq.h>

/**

Implementation of the RCommsBufAsyncRequest.

 @internalTechnology

 */

class CCommsBufAsyncRequest : public CBase

    {

    friend class CSystemSharedBufPond;    

    friend class CMBufManager;

    friend class RMBufAsyncRequest;

    friend class RCommsBufAsyncRequest;

    friend class CSystemSharedAsyncAlloc;

	public:

    IMPORT_C CCommsBufAsyncRequest(TCommsBufAllocator& aAllocator);

    ~CCommsBufAsyncRequest();

    void Alloc(RCommsBufChain& aChain, TInt aSize, TInt aMinSize, TInt aMaxSize, TRequestStatus& aStatus);

    void Cancel();

    IMPORT_C void Complete(TInt aCode);

    private:    

    TInt                iSize;

    TInt                iMinSize;

    TInt                iMaxSize;

    RCommsBufQ          iBufQ;

    RCommsBufChain*     iChain;

    TRequestStatus*     iStatusPtr;

    RThread             iThread;

    TDblQueLink         iLink;

    TCommsBufAllocator  iAllocator;    

    };

#endif // __COMMSBUFASYNCREQINTERNAL_H__