/*

* Copyright (c) 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:  Declaration of the class CLibraryEventHandler.

*

*/

#ifndef ANALYZETOOLEVENTHANDLER_H

#define ANALYZETOOLEVENTHANDLER_H

// INCLUDES

#include <e32cmn.h>

#include "codeblock.h"

#include <analyzetool/atstorageserverclnt.h>

#include <analyzetool/analyzetool.h>

// FORWARD DECLARATIONS

class MAnalyzeToolEventhandlerNotifier;

// CLASS DECLARATION

/**

*  Class for receiving library load/unlaod events from the kernel   

*/

class CLibraryEventHandler : public CActive

    {

    public: 

        /**

        * C++ default constructor.

        * @param aAnalyzeTool A reference to the <code>RAnalyzeTool</code> 

                 which is used to observe kernel events 

        * @param aCodeblocks A reference to array of code segments

        * @param aStorageServer A reference to the 

        *                       <code>RATStorageServer</code> which is 

        *                       used to store kernel events

        * @param aProcessId A reference to the observed process id

        * @param aMutex A reference to mutex to schedule access to the 

        *                   shared resources

        * @param aNotifier A reference to notifier object which is used to 

        * 					inform killed threads

        * @param aLogOption Current used log option on allocator.

        */

        CLibraryEventHandler( RAnalyzeTool& aAnalyzeTool, 

                RArray<TCodeblock>& aCodeblocks, 

                RATStorageServer& aStorageServer, 

                TUint aProcessId,

                RMutex& aMutex,

                MAnalyzeToolEventhandlerNotifier& aNotifier,

                TUint32 aLogOption );

        /**

        * Destructor.

        */

        ~CLibraryEventHandler();

        /* Start receiving events from the kernel */

        void Start();

        /**

        * Returns eventhandler's state.

        * @return TBool ETrue if eventhandler is started, EFalse otherwise

        */

        TBool IsStarted();

    protected: // Functions from base classes

        /**

        * Process active object's task

        */

        void RunL();

        /**

        * Cancels active object's task

        */

        void DoCancel();

    private: // Member variables

        /* Handle to the analyze tool device driver*/

        RAnalyzeTool& iAnalyzeTool; 

        /* A reference to codeblocks of the observed process */

        RArray<TCodeblock>& iCodeblocks;

        /* Handle to the storage server*/

        RATStorageServer& iStorageServer;

        /* The observered process id */ 

        TUint iProcessId;

        /* The library info */

        TLibraryEventInfo iLibraryInfo;

        /* The mutex for serializing access to the shared resources */

        RMutex& iMutex;

        /* Inform if handler is started */

        TBool iStarted;

        /* A reference to event handler notifier */

        MAnalyzeToolEventhandlerNotifier& iNotifier;

        /* Current used log option */

        TUint32 iLogOption;

    };

#endif // ANALYZETOOLEVENTHANDLER_H

// End of File