/*

 * Copyright (c) 2006-2009 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:

 * Name        : readrequesthandler.h

 * Part of     : stdio server

 * To handle request for read

 * 

 *

 */

 #ifndef _READREQUEST_H_

 #define _READREQUEST_H_

 #include<e32base.h>//CActive

 //Enumarations for Polling

 //duplicate of fdesc.h

 enum TPollMode

     {

     EReadyForReading = 1,

     EReadyForWriting = 2,

     EAnyException = 4

     };

 class CStreamBase;

 //-----------------------------------------------------------------------

 //Class name: 	TReadRequest

 //Description: 	Request object created for every read request from a

 //				client. These are queued as a singly linked list.

 //-----------------------------------------------------------------------

 class TReadRequest

 	{

 public:

 	inline TReadRequest(const RMessage2&);

 	const RMessage2 iMessage2;

 	TSglQueLink   iLink;

 	};

 //-----------------------------------------------------------------------

 //Class name: 	CReadRequestHandler

 //Description: 	Request Handler class created for Read media. This 

 //				Class is an active object and will handle all read

 //				requests in the form of RReadRequest objects.

 //-----------------------------------------------------------------------

 class CReadRequestHandler : public CActive

 	{

 public:

 	static CReadRequestHandler* NewL(CStreamBase* aConsoleRead);

 	~CReadRequestHandler();

 	void RunL();

 	void ServiceL(const RMessage2& aMessage2);

 	void NotifyActivityL(const RMessage2& aMessage2);

 	void CancelNotify();

 	void DoCancel();

 private:

 	CReadRequestHandler();

 	CReadRequestHandler(CStreamBase* aConsoleRead);

 	void Complete(const RMessage2 &aMessage);

 	TSglQue<TReadRequest> iQueue; 

 	CStreamBase* iReadStream;

 	TInt iNotifyHandle;

 	TPtr8 iPtr;

 	};

 #endif //_READREQUEST_H_