commsfwutils/commsbufs/src/commsbufasyncrequest.cpp
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// Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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//
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#include "es_commsbuf_internal.h"
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#include <comms-infras/commsbufpondop.h>
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#include "commsbufasyncreqinternal.h"
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EXPORT_C RCommsBufAsyncRequest::RCommsBufAsyncRequest()
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: iAsyncReqImpl(NULL)
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/**
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The constructor 
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*/
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	{
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	}
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EXPORT_C RCommsBufAsyncRequest::RCommsBufAsyncRequest(CCommsBufAsyncRequest* aImpl)
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: iAsyncReqImpl(aImpl)
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    {
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    }
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EXPORT_C RCommsBufAsyncRequest::~RCommsBufAsyncRequest()
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/**
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The destructor
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*/
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	{
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	}
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EXPORT_C TInt RCommsBufAsyncRequest::Open(TCommsBufAllocator& aAllocator)
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    {
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    if(iAsyncReqImpl == NULL)
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        {
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        iAsyncReqImpl = new CCommsBufAsyncRequest(aAllocator);
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        }
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    return (iAsyncReqImpl == NULL) ? KErrNoMemory : KErrNone; 
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    }
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EXPORT_C void RCommsBufAsyncRequest::Close()
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    {
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    delete iAsyncReqImpl;
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    iAsyncReqImpl = NULL;
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    }
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EXPORT_C void RCommsBufAsyncRequest::Alloc(RCommsBufChain& aChain, TInt aSize, TRequestStatus& aStatus)	
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/**
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Allocate a RCommsBuf chain asynhronously. 
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@param 	aChain 			The chain
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@param 	aLength			The length of the chain
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@param 	aStatus			The request status
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@param	aAllocator		The handle to the allocator
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*/
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	{
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	RCommsBufAsyncRequest::Alloc(aChain, aSize, 0, KMaxTInt, aStatus);	
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	}
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EXPORT_C void RCommsBufAsyncRequest::Alloc(RCommsBufChain& aChain, TInt aSize, TInt aMinSize, TInt aMaxSize, TRequestStatus& aStatus)   
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/**
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Allocate a RCommsBuf chain asynhronously. 
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@param  aChain          The chain
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@param  aLength         The length of the chain
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@param  aStatus         The request status
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@param  aAllocator      The handle to the allocator
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*/
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    {
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    __ASSERT_ALWAYS(iAsyncReqImpl != NULL, CommsBuf::Panic(EMBuf_InvalidAsyncReqImpl));
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	iAsyncReqImpl->Alloc(aChain, aSize, aMinSize, aMaxSize, aStatus);
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    }
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EXPORT_C void RCommsBufAsyncRequest::Cancel()
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/**
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Cancel the asynchronous request
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*/
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	{
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	if (iAsyncReqImpl)
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		{
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		iAsyncReqImpl->Cancel();
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		}
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	}
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EXPORT_C void RCommsBufAsyncRequest::Complete(TInt aCode)
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/**
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Complete the request.
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@param	aCode	The request completion code
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*/
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	{
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	__ASSERT_ALWAYS(iAsyncReqImpl != NULL, CommsBuf::Panic(EMBuf_InvalidAsyncReqImpl));
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	iAsyncReqImpl->Complete(aCode);
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	}