--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/realtimenetprots/sipfw/SIP/Common/inc/DeleteMgr.h	Tue Feb 02 01:03:15 2010 +0200
@@ -0,0 +1,128 @@
+/*
+* Copyright (c) 2002-2009 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          : DeleteMgr.h
+* Part of       : SIPCommon
+* Version       : SIP/2.0 
+*
+*/
+
+
+
+
+/**
+ @internalComponent
+*/
+
+
+#ifndef DELETEMGR_H
+#define DELETEMGR_H
+
+#include <e32base.h>
+#include <e32std.h>
+
+
+//Panic reasons
+enum TDeleteMgrPanic
+	{
+	EDeleteMgrFncPrecondNotMet
+	};
+
+
+/*
+ * CDeleteMgr is an active object handling the deletion of CBase-derived
+ * objects asyncronously, avoiding the need to use constructs like
+ * "delete this".
+ * Using CDeleteMgr for freeing the memory guarantees that the call stack
+ * won't include any code from the object that is to be deleted.
+ */
+class CDeleteMgr : public CActive
+	{
+public:
+	/**	 
+	 * Creates a new object.
+	 *
+	 * @pre 
+	 * @post
+	 *
+	 * @see
+	 *	 	 
+	 * @return value New CDeleteMgr object. Ownership is transferred.
+	 */
+	static CDeleteMgr* NewL();
+
+
+	/**	 
+	 * Frees the resources of CDeleteMgr. Any delete requests which have been
+	 * issued, but not yet executed, are also done.
+	 *
+	 * @pre 
+	 * @post
+	 *
+	 * @see
+	 *	 	 
+	 * @return value -
+	 */
+	~CDeleteMgr();
+
+	
+	/**
+	 * Request an asynchronous deletion of memory. The memory will be freed
+	 * when the CDeleteMgr::RunL() will be called by the Active Scheduler.	 
+	 *
+	 * @pre aItemToDelete != NULL, aItemToDelete != this CDeleteMgr instance
+     *  itself, pointer to an object can't be added more than once
+	 *
+	 * @param aItemToDelete CBase derived object to be deleted. Ownership is
+	 *	transferred.
+	 * @return value KErrNone if successful, otherwise a system wide error code
+	 */
+	TInt AddDeleteRequest(const CBase* aItemToDelete);
+
+
+	//from CActive:
+	void DoCancel();
+	void RunL();
+	TInt RunError(TInt aError);
+
+private:
+	CDeleteMgr();
+
+
+	/**
+	 * Starts waiting for AddDeleteRequest() events.
+	 *
+	 * @pre 
+	 *	 
+	 * @return value -
+	 */
+	void WaitForRequests();
+	
+
+	//Pointers which have not yet been deleted are stored here
+	RPointerArray<CBase> iDeleteRequests;
+
+
+#ifdef CPPUNIT_TEST
+	friend class CDeleteMgrTest;
+	friend class CUserAgentClient_Test;
+	friend class CNormalUAC_ResolveAddress_Test;
+	friend class CNormalUAC_WaitResponse_Test;
+	friend class CNormalUAS_Start_Test;
+#endif
+	};
+
+#endif // end of DELETEMGR_H
+
+// End of File