--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/messagingfw/biomsgfw/BIUTSRC/REGPSDLL.CPP	Wed Nov 03 22:41:46 2010 +0530
@@ -0,0 +1,116 @@
+// Copyright (c) 1999-2009 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:
+// A revised version of the CRegisteredParserDll class.  This no longer uses a 
+// reference to a CParserRegistrationData object.  Instead a UidType is passed in 
+// the  constructor, or through a set method.  The class is used to find the file 
+// which contains a parser, to load and maintain a reference count of the number of 
+// objects using the dll, so that it can be unloaded when no longer required. 
+// It will also unload the dll when a new parser is required.
+// 
+//
+
+#include "REGPSDLL.H"
+#include <f32file.h>
+#include <s32strm.h>
+#include <e32uid.h>
+#include <biouids.h>
+#include <msvreg.h>
+#ifdef SYMBIAN_ENABLE_SPLIT_HEADERS 
+#include <biomessageuids.h>
+#endif
+    
+EXPORT_C CRegisteredParserDll* CRegisteredParserDll::NewL(TDesC& aParserName)
+/** Allocates and creates a new BIO parser counter.
+
+@param aParserName Name of the BIO parser to handle
+@return New BIO parser counter */
+    {
+    CRegisteredParserDll* self = new (ELeave) CRegisteredParserDll(aParserName);
+    CleanupStack::PushL(self);
+    self->ConstructL();
+    CleanupStack::Pop(self);
+    return self;
+    }
+
+void CRegisteredParserDll::ConstructL()
+    {
+    CTimer::ConstructL();
+    CActiveScheduler::Add(this);
+    }
+
+
+CRegisteredParserDll::CRegisteredParserDll(const TDesC& aParserName)
+: CTimer(EPriorityLow), iParserName(aParserName)
+	{
+	}
+
+EXPORT_C CRegisteredParserDll::~CRegisteredParserDll()
+/** Destructor. */
+	{
+	__ASSERT_DEBUG(iDllRefCount==0,User::Panic(_L("Dll in use"), KBIOMessageParserDllStillInUse));
+    Cancel();
+	iParserDllLibrary.Close();
+	}
+
+void CRegisteredParserDll::RunL()
+    {
+    iParserDllLibrary.Close();
+    }
+
+EXPORT_C TInt CRegisteredParserDll::GetLibrary(RFs& aFs,RLibrary& aDllLibrary)
+/** Gets a handle to the parser DLL, and increments the reference count.
+
+@param aFs File server handle
+@param aDllLibrary On return, the parser DLL
+@return Incremented reference count if successful; otherwise, a system wide 
+error code */
+	{
+	TInt ret=KErrNone;
+	if (iDllRefCount==0)
+		TRAP(ret,LoadLibraryL(aFs));
+	if (ret==KErrNone)
+		{
+		aDllLibrary = iParserDllLibrary;
+		iDllRefCount++;
+		}
+	else
+		iParserDllLibrary.Close();
+	return ret;
+	}
+
+void CRegisteredParserDll::LoadLibraryL(RFs& /*aFs*/)   
+	{
+	// load parser using name - messaging api v2 style
+	Cancel();
+	if (iParserDllLibrary.Handle()==0)
+		{
+		User::LeaveIfError(iParserDllLibrary.Load(iParserName));
+		}
+	}
+
+EXPORT_C void CRegisteredParserDll::ReleaseLibrary()
+/** Releases the parser DLL, and decrements the reference count. */
+	{
+	iDllRefCount--;
+	if(iDllRefCount==0)
+		{
+        After(KReleaseLibraryTimeout);
+		}
+	}
+
+TInt CRegisteredParserDll::FindFullName(RFs& /*aFs*/,TDes& /*aFullName*/)
+	{
+	User::Invariant();
+	return KErrNotSupported; // Only here to avoid warnings
+	}