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

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

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

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description: Asynchronous allocation support to allocate shared buffer(s)

    14 //

    15 

    16 #ifndef __COMMSBUFASYNCREQUEST_H__

    17 #define __COMMSBUFASYNCREQUEST_H__

    18 

    19 #include <e32base.h>

    20 

    21 #include <es_commsbuf.h>

    22 #include <comms-infras/commsbufq.h>

    23 

    24 class RCommsBufChain;

    25 class CCommsBufAsyncRequest;

    26 /**

    27 Class that specialises the allocation of RCommsBuf asynchronously.

    28 

    29 @publishedPartner

    30 */

    31 class RCommsBufAsyncRequest

    32 	{

    33     friend class CSystemSharedBufPond;  

    34 	friend class RCommsBufPond;

    35 	friend class CMBufManager;

    36 	friend class RMBufAsyncRequest;

    37 	public:

    38 	IMPORT_C RCommsBufAsyncRequest();

    39 	IMPORT_C ~RCommsBufAsyncRequest();

    40     IMPORT_C TInt Open(TCommsBufAllocator& aAllocator);

    41     IMPORT_C void Close();

    42 	IMPORT_C void Alloc(RCommsBufChain& aChain, TInt aSize, TRequestStatus& aStatus);

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

    44 	IMPORT_C void Cancel();

    45 	

    46 	protected:

    47 	IMPORT_C void Complete(TInt aCode);	

    48 	

    49 	private:

    50     IMPORT_C RCommsBufAsyncRequest(CCommsBufAsyncRequest* aImpl);

    51 	private:

    52 	CCommsBufAsyncRequest*     iAsyncReqImpl;

    53 	};

    54 

    55 #endif // __COMMSBUFASYNCREQUEST_H__