/*

* 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_