diff -r 9f5ae1728557 -r db3f5fa34ec7 messagingfw/msgsrvnstore/server/inc/cmsvconverterwaiter.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/messagingfw/msgsrvnstore/server/inc/cmsvconverterwaiter.h	Wed Nov 03 22:41:46 2010 +0530
@@ -0,0 +1,92 @@
+// Copyright (c) 2008-2009 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:
+//
+
+
+#ifndef __CMSVCONVERTERWAITER_H__
+#define __CMSVCONVERTERWAITER_H__
+
+#include "MSVSERV.H"
+#include <f32file.h>
+#include "e32std.h"
+#include "e32const.h"
+#include <e32property.h>
+
+
+// Constants. These are used in public and subscribe mechanism that is used to handle 
+// conversion cancel request
+const TUint KMyPropertyName = 0x0003;
+const TUid KMyPropertyCat = {0x10034567};
+
+
+/**
+CMsvConverterWaiter
+This acts as a waiter class and is responsible for creating, initiating and communicating with the
+converter thread. It initiates message store conversion on the specified drive and upon successful 
+completion, updates the drive status to supported in preferred drive list. This class provides a
+way of asynchronous handling of store conversion.
+
+@internalAll 
+@released
+*/
+NONSHARABLE_CLASS (CMsvConverterWaiter) : public CActive 
+	{
+	public:
+		static CMsvConverterWaiter* InstanceL(CMsvServer* aServer);
+		static CMsvConverterWaiter* Instance();
+		~CMsvConverterWaiter();
+		void StartMessageStoreConversionL(const RMessage2& aMessage,TBool aQueuedRequest);
+		void CancelConversionL(const RMessage2& aMessage);
+		void GetConversionStatus(const RMessage2& aMessage);
+		TBool isRunningMessageStoreConverter();
+		void QueueConversionRequestL(const RMessage2& aMessage);
+		
+	private:
+		CMsvConverterWaiter(CMsvServer* aServer);
+		TInt ValidateRequestedDriveL(TDriveNumber aDrive);
+		TInt ValidateDriveInPreferredDriveListL(TDriveNumber aDrive);
+		
+		TInt Start();
+		void Completed(const TInt aStatus);
+		// active object
+		void DoCancel();
+		void RunL();
+		TInt DefineProperty();
+		TInt PublishProperty(TInt aValue);
+	private:
+		
+		// conversion queue structure		
+		struct TConversionQueue
+			{
+			TDriveNumber iDriveNumber;
+			RMessage2 iMessage;				
+			};
+	
+		static CMsvConverterWaiter* iConverterWaiter;
+		RArray<TConversionQueue> iConverterQueue;
+		RThread iConverterThread;
+		CMsvServer *iServer;
+		TDriveNumber iDriveNumber;
+		RProperty iProperty;
+	
+#if (defined SYMBIAN_MESSAGESTORE_UNIT_TESTCODE)	
+	friend class CTestMessageConverterWaiter;
+#endif
+	};
+
+#endif   //__CMSVCONVERTERWAITER_H__
+
+
+
+