--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/connectivitylayer/isce/p2prouter_dll/inc/msgqueue.h	Fri Nov 06 17:28:23 2009 +0000
@@ -0,0 +1,98 @@
+/*
+* 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 the License "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 __DMSGQUEUE_H_
+#define __DMSGQUEUE_H_
+
+#include <e32def.h>             // For TUint32
+#include <e32cmn.h>             // For TDesC8
+#include <klib.h>        // For DBase
+
+class NFastMutex;
+
+/*
+* Ring buffer for messages.
+*/
+NONSHARABLE_CLASS( DMsgQueue ) : public DBase
+    {
+
+    public:
+
+        /*
+        * Constructor
+        * @param aSize, maximum size of the queue.
+        */
+        DMsgQueue( const TUint16 aSize );
+
+        /*
+        * Destructor
+        */
+        ~DMsgQueue();
+
+        /* 
+        * Adds the message in the end of the ringbuffer queue.
+        * If queue overflows throws fault.
+        * @param aMessage, message to be added
+        */
+        void Add( const TDesC8& aMessage );
+
+        /* 
+        * Returns the count of the messages in the queue
+        * @return count of the messages in the queue.
+        */
+        TUint16 Count();
+
+        /*
+        * Returns a reference to first message ( iOutputIndex ) in the ring buffer.
+        * If queue is messed up throws fault.
+        * NOTE! Responsibility to deallocate the memory is transferred to caller.
+        * @return reference to message
+        */
+        TDes8& Get();
+
+        /*
+        * Rolls back the ringbuffer.
+        * Message must be the last message get from the queue.
+        * NOTE! Responsibility to deallocate the memory is transferred to queue.
+        * @param aMsgToRoll
+        */
+        void RollBack( const TDesC8& aMsgToRoll );
+
+    private:
+
+        // Added convention:
+        // Prefix "iSh" means shared member variable
+        // Prefix "gSh" means shared global variable
+
+        // Index where to add next message pointer.
+        TUint16     iShInputIndex;
+        // Index where to get next message pointer.
+        TUint16     iShOutputIndex;
+        // Count of items in the array.
+        TUint16     iShCount;
+        // Size of the ring buffer. Written only once in constructor.
+        TUint16     iSize;
+        // Owned
+        NFastMutex* iQueueMutex;
+        // Owned, memory allocated for the buffer.
+        TDes8**     iShRingBuffer;
+
+    };
+
+#endif /* __DMSGQUEUE_H_ */