/*

* 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:  Low memory observer for havester server

*

*/

#ifndef MDSOOMPLUGIN_H

#define MDSOOMPLUGIN_H

// INCLUDES

#include <e32std.h>

#include <e32base.h>

#include <e32msgqueue.h>

#include <oommonitorplugin.h>

// CLASS DECLARATION

/**

*  CMdSOomPlugin

* 

*/

class CMdSOomPlugin : public COomMonitorPlugin

	{

public:

	// Constructors and destructor

	static CMdSOomPlugin* NewL();

	/**

	 * Destructor.

	 */

	virtual ~CMdSOomPlugin();	

	/**

	 * From COomMonitorPlugin

	 * FreeRam is called when the system RAM level becomes

	 * low. This plugin is requested to help free some RAM.

	 */

	void FreeRam();

	/**

	 * From COomMonitorPlugin

	 * MemoryGood is called when the system RAM level becomes

	 * good after being low.The plugin may take this opportunity

	 * to start using RAM again.

	 * Nb It is assumed that the plugin will not immediately

	 * cause a large increase in memory use, but that memory may be

	 * used over time, otherwise the plugin may cause oscillation

	 * between low and good memory states.

	 */

	void MemoryGood();

private:

	/**

	 * Constructor for performing 1st stage construction

	 */

	CMdSOomPlugin();

	/**

	 * default constructor for performing 2nd stage construction

	 */

	void ConstructL();

	/**

	 * From COomMonitorPlugin

	 */

	void ExtensionInterface(TUid aInterfaceId, TAny*& aImplementation);

private:

	RMsgQueue<TInt> iOomMsgQueue;

	};

#endif // MDSOOMPLUGIN_H