--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/photosgallery/common/inc/glxsingletonstore.inl	Thu Dec 17 08:45:44 2009 +0200
@@ -0,0 +1,79 @@
+/*
+* 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:    TLS store for singleton objects
+*
+*/
+
+
+
+
+#include <glxlog.h>
+#include <glxpanic.h>
+
+// -----------------------------------------------------------------------------
+// Return new or existing instance
+// -----------------------------------------------------------------------------
+//
+template <class T>
+T* CGlxSingletonStore::InstanceL( T* (*aFactoryFuncL)() )
+	{
+	// Get new or existing pointer to store.
+	// InstanceL stores the pointer in TLS
+    CGlxSingletonStore* store = InstanceLC();
+    	
+    // Try to find existing object of type T
+    TInt count = store->iSingletons.Count();
+    TInt i = 0;
+    T* obj = NULL;
+    while (i < count && !obj) 
+        {
+        obj = dynamic_cast<T*>(store->iSingletons[i].iObject);
+        if (obj)
+            {
+            // Found an existing object of type T
+            GLX_LOG_INFO1("CGlxSingletonStore::InstanceL, Found existing object %x", obj);
+            // Add another reference
+            store->iSingletons[i].iReferenceCount++;
+            }
+        i++;
+        }
+    
+    // Create new object if one did not exist
+    if ( !obj ) 
+        {
+        // If these calls leave, Cleanup stack will make sure tls 
+        // pointer is cleared, if there are no other clients for CGlxSingletonStore
+        // class
+        
+        // Reserve space in the array so that can safely append
+        store->iSingletons.ReserveL( count + 1 );
+        
+        // Create a new object via provided factory function
+        obj = aFactoryFuncL();
+        
+        // Give ownership of the new object to store
+        TSingleton singleton;
+        singleton.iObject = obj;
+        singleton.iReferenceCount = 1;
+        store->iSingletons.Append(singleton);
+
+        GLX_LOG_INFO1 ("CGlxSingletonStore::InstanceL, Created new object %x", obj);
+        }
+
+    // Remove singleton store from cleanup stack
+    CleanupStack::Pop(store);
+
+	return obj;
+	}    
+