realtimenetprots/sipfw/SIP/Common/src/DeleteMgr.cpp
changeset 0 307788aac0a8
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/realtimenetprots/sipfw/SIP/Common/src/DeleteMgr.cpp	Tue Feb 02 01:03:15 2010 +0200
@@ -0,0 +1,149 @@
+// 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.cpp
+// Part of       : SIPCommon
+// Version       : SIP/3.0
+//
+
+
+
+#include "DeleteMgr.h"
+
+// -----------------------------------------------------------------------------
+// CDeleteMgr::NewL
+// Start listening for requests
+// -----------------------------------------------------------------------------
+//
+CDeleteMgr* CDeleteMgr::NewL()
+	{
+	CDeleteMgr* self = new (ELeave) CDeleteMgr;
+	CActiveScheduler::Add(self);
+	self->WaitForRequests();
+	return self;
+	}
+
+// -----------------------------------------------------------------------------
+// CDeleteMgr::CDeleteMgr
+// -----------------------------------------------------------------------------
+//
+CDeleteMgr::CDeleteMgr() : CActive(EPriorityStandard)
+#ifdef CPPUNIT_TEST
+    //For unit tests the granularity of arrays is set to 1 to cause them to
+    //allocate memory every time an item is appended to array
+    , iDeleteRequests(1)    
+#endif
+	{
+	}
+
+// -----------------------------------------------------------------------------
+// CDeleteMgr::~CDeleteMgr
+// -----------------------------------------------------------------------------
+//
+CDeleteMgr::~CDeleteMgr()
+	{
+	iDeleteRequests.ResetAndDestroy();
+
+	//Make sure CDeleteMgr isn't active anymore
+	Cancel();
+	}
+
+// -----------------------------------------------------------------------------
+// CDeleteMgr::WaitForRequests
+// -----------------------------------------------------------------------------
+//
+void CDeleteMgr::WaitForRequests()
+	{
+	__ASSERT_DEBUG(!IsActive(),
+		User::Panic(_L("CDeleteMgr::WaitForRequests() already active"),
+		EDeleteMgrFncPrecondNotMet));	
+
+	if (!IsActive())
+		{
+		iStatus = KRequestPending;
+		SetActive();
+		}
+	}
+
+// -----------------------------------------------------------------------------
+// CDeleteMgr::AddDeleteRequest
+// -----------------------------------------------------------------------------
+//
+TInt CDeleteMgr::AddDeleteRequest(const CBase* aItemToDelete)
+	{
+	if (!aItemToDelete)
+        {
+		return KErrArgument;
+        }
+
+	//It is not allowed to delete CDeleteMgr itself
+	if (aItemToDelete == this)
+        {
+		return KErrArgument;
+        }
+
+	//Duplicate entries are not allowed
+	if (iDeleteRequests.Find(aItemToDelete) != KErrNotFound)
+        {
+		return KErrAlreadyExists;
+        }
+
+	//CActive::iActive won't tell whether User::RequestComplete() has already
+	//been called, so iStatus is inspected to see whether a previous call to
+	//AddDeleteRequestL() has already called User::RequestComplete().
+	if (iStatus == KRequestPending)
+		{
+		//Wake up to process the request
+		TRequestStatus* status = &iStatus;
+		User::RequestComplete(status, KErrNone);
+		}
+	
+	return iDeleteRequests.Append(aItemToDelete);
+	}
+
+// -----------------------------------------------------------------------------
+// CDeleteMgr::DoCancel
+// -----------------------------------------------------------------------------
+//
+void CDeleteMgr::DoCancel()
+	{
+	//Complete the request
+	TRequestStatus* status = &iStatus;
+	User::RequestComplete(status, KErrCancel);
+	}
+
+// -----------------------------------------------------------------------------
+// CDeleteMgr::RunL
+// Handle all requests and then start waiting for the next request
+// -----------------------------------------------------------------------------
+//
+void CDeleteMgr::RunL()
+	{
+	iDeleteRequests.ResetAndDestroy();
+	WaitForRequests();
+	}
+
+// -----------------------------------------------------------------------------
+// CDeleteMgr::RunError
+// Since RunL() won't leave this shouldn't be called.
+// -----------------------------------------------------------------------------
+//
+TInt CDeleteMgr::RunError(TInt aError)
+	{
+	if (aError == KErrNoMemory)
+		{
+		return aError;
+		}
+
+    return KErrNone;
+	}