cbs/CbsServer/ServerInc/CCbsScheduler.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 31 Aug 2010 15:45:17 +0300
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/*
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* Copyright (c) 2003 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:  This file contains the header file of the CCbsScheduler class.
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*
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*/
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#ifndef CCBSSCHEDULER_H
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#define CCBSSCHEDULER_H
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// INCLUDES
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#include <e32base.h>
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// FORWARD DECLARATIONS
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class CCbsServer;
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//  CLASS DECLARATION 
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/**
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*   CbsServer includes a scheduler of it's own to simplify
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*   client request handling code. All active object leaves are
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*   handled in function Error(). The behaviour of Error()
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*   depends on whether there is an outstanding client request
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*   or not: it will tell the client the reason for inability
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*   to handle the client request. It will also panic the
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*   client if the descriptor passed to the server was malformed.
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*   Finally, a panic is raised if the error does not originate
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*   from the server itself.
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*
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*   See Tasker: Professional Symbian Programming, Chapter 20
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*   for details.
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*/
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class CCbsScheduler : public CActiveScheduler
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    {
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public:     // new
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    /**
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    *   Default constructor  
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    */
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    CCbsScheduler();
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    /**
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    *   Gives a pointer of the current CCbsServer instance
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    *   to the scheduler.
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    *
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    *   @param      aServer     The current server pointer
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    */
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    void SetServer( CCbsServer* aServer );
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public:     // from CActiveScheduler
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    /**
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    *   Overridden to handle leaves in request functions and
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    *   unexpected situations.
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    *
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    *   @param      aError      Error code, 
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    *                           see Symbian OS system documentation.
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    */
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    void Error( TInt aError ) const;
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private:    // prohibited operators and functions
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    // Copy constructor
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    CCbsScheduler( const CCbsScheduler& );
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    // Assignment operator
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    CCbsScheduler& operator=( const CCbsScheduler& );
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private:    // data
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    // Ref: server instance
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    CCbsServer* iServer;
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    };
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#endif // CCBSSCHEDULER_H   
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// End of File
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