--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/omxil_generic/omxilcomplib/src/primsgqueue.inl	Wed Aug 25 12:40:50 2010 +0300
@@ -0,0 +1,156 @@
+// 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:
+//
+
+
+/**
+   @file
+   @internalComponent
+*/
+
+
+template <typename T>
+inline RPriMsgQueue<T>::TFrontQueueElement::TFrontQueueElement(
+	const TAny* apInfo)
+	:
+	ipInfo(apInfo)
+	{
+	iLink.iPriority = 0;
+	}
+
+template <typename T>
+inline RPriMsgQueue<T>::TFrontQueueElement::TFrontQueueElement(
+	const TAny* apInfo, TInt aPriority)
+	:
+	ipInfo(apInfo)
+	{
+	iLink.iPriority = aPriority;
+	}
+
+template <typename T>
+inline TInt RPriMsgQueue<T>::CreateLocal(TInt aSize, TOwnerType aOwner)
+    {
+	iFrontQueue.SetOffset(_FOFF(TFrontQueueElement, iLink));
+	return iBackQueue.CreateLocal(aSize, sizeof(T), aOwner);
+	}
+
+template <typename T>
+inline TInt RPriMsgQueue<T>::Handle() const
+	{
+	return iBackQueue.Handle();
+	}
+
+template <typename T>
+inline TInt RPriMsgQueue<T>::Send(const T& aMsg)
+    {
+	ASSERT(aMsg);
+	return iBackQueue.Send(&aMsg, sizeof(T));
+	}
+
+template <typename T>
+inline TInt RPriMsgQueue<T>::Receive(T& aMsg)
+    {
+	TInt err = DrainBackQueue();
+	if (KErrNone == err)
+		{
+		if (iFrontQueue.IsEmpty())
+			{
+			return KErrUnderflow;
+			}
+
+		TFrontQueueElement* pElement = iFrontQueue.First();
+		__ASSERT_DEBUG(pElement != 0,
+					   User::Panic(RPriMsgQueuePanicCategory, 1));
+		pElement->iLink.Deque();
+		aMsg = reinterpret_cast<T>(const_cast<TAny*>(pElement->ipInfo));
+		delete pElement;
+		}
+
+	return err;
+
+	}
+
+template <typename T>
+inline void RPriMsgQueue<T>::Close()
+	{
+
+	// Back queue should be empty by now, but just in case...
+
+	// Here we expect a pointer type!...
+	T pElement;
+	while (iBackQueue.Receive(&pElement, sizeof(T)) == KErrNone)
+		{
+		delete pElement;
+		pElement = 0;
+		}
+	iBackQueue.Close();
+
+	// Front queue should be empty by now, but just in case...
+	TFrontQueueElement* pFQElement = 0;
+	while (!iFrontQueue.IsEmpty())
+		{
+		pFQElement = iFrontQueue.First();
+		__ASSERT_DEBUG(pFQElement != 0,
+					   User::Panic(RPriMsgQueuePanicCategory, 1));
+		pFQElement->iLink.Deque();
+		pElement = reinterpret_cast<T>(const_cast<TAny*>(pFQElement->ipInfo));
+		delete pElement;
+		delete pFQElement;
+		}
+
+	}
+
+template <typename T>
+inline void RPriMsgQueue<T>::NotifyDataAvailable(TRequestStatus& aStatus)
+	{
+	iBackQueue.NotifyDataAvailable(aStatus);
+	}
+
+template <typename T>
+inline void RPriMsgQueue<T>::CancelDataAvailable()
+	{
+	iBackQueue.CancelDataAvailable();
+	}
+
+template <typename T>
+TInt RPriMsgQueue<T>::DrainBackQueue()
+	{
+
+	// Here we expect a pointer type!...
+	T pElement;
+	while (iBackQueue.Receive(&pElement, sizeof(T)) == KErrNone)
+		{
+		TFrontQueueElement* pElem =
+			new TFrontQueueElement(pElement, pElement->Priority());
+
+		// This double attempt at allocation is done in order to allow OOM
+		// tests to pass, as there is no way to report an error to the client
+		// if we lose a RegisterCallbacks message in an OOM situation
+		if (!pElem)
+			{
+			pElem = new TFrontQueueElement(pElement, pElement->Priority());
+			}
+
+		if (!pElem)
+			{
+			// This command will get lost, but at least it won't be leaked
+			delete pElement;
+			return KErrNoMemory;
+			}
+		iFrontQueue.Add(*pElem);
+		}
+
+	return KErrNone;
+
+	}