wlanutilities/wlansniffer/wlansnifferkeepalive/inc/wsfkeepalivetimer.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Fri, 11 Jun 2010 14:43:07 +0300
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/*
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* Copyright (c) 2010 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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* Timer implementation.
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*/
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#ifndef WSFKEEPALIVETIMER_H
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#define WSFKEEPALIVETIMER_H
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// System includes
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#include <e32base.h>
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// User includes
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// Forward declarations
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// External data types
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// Global function prototypes
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// Constants
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// Class declaration
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/**
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 *  Timer interface class.
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 *
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 *  This is an interface class, which the Keepalive implementation needs
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 *  to inherit in order to receive timer notifications.
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 */
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class MWsfKeepaliveTimerNotify
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    {
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public:
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    /**
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     * Pure virtual timer expiration function that needs to be
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     * implemented in the Keepalive implementation class.
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     * 
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     * @param aError Status of the timer event
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     */
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    virtual void TimerExpired( TInt aError ) = 0;
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    };
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/**
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 *  Timer implementation.
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 *  
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 *  This is the actual timer implementation class.
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 */
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class CWsfKeepaliveTimer: public CActive
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{
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    // Friend classes:
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public:
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    // Data types
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    /** Constructors */
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    /**
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     * Two-phased constructor.
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     * 
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     * @param aNotify Timer expirations are notified to this class
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     * @return New object allocated from heap
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     */
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    static CWsfKeepaliveTimer* NewL( MWsfKeepaliveTimerNotify& aNotify );
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    /**> Destructor */
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    virtual ~CWsfKeepaliveTimer();
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public:
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    /**
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     * Sets the timer to expire after the given interval.
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     * 
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     * @param aInterval Interval in microseconds
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     */
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    void After( TTimeIntervalMicroSeconds32 aInterval );
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    /**
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     * Stops the timer.
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     */
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    void Stop();
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protected:
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private:
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    CWsfKeepaliveTimer( MWsfKeepaliveTimerNotify& aNotify );
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    void ConstructL();
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    void RunL();
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    void DoCancel();
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private: // Data
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    /**
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     * Actual timer object
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     */
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    RTimer iTimer;
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    /**
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     * Timer expirations are notified to this class
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     */
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    MWsfKeepaliveTimerNotify& iNotify;
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    };
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2dc6da6fb431 Revision: 201021
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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#endif // WSFKEEPALIVETIMER_H