diff -r 000000000000 -r 818e61de6cd1 crashanalysercmd/PerfToolsSharedLibraries/Engine/SymbolLib/Sources/Map/Comparison/MapFileAddressRangeComparer.cs
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/crashanalysercmd/PerfToolsSharedLibraries/Engine/SymbolLib/Sources/Map/Comparison/MapFileAddressRangeComparer.cs	Thu Feb 11 15:50:58 2010 +0200
@@ -0,0 +1,48 @@
+/*
+* 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 "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:
+*
+*/
+using System;
+using System.Collections.Generic;
+using System.Text;
+using SymbolLib.Sources.Symbol.File;
+using SymbolLib.Sources.Map.File;
+
+namespace SymbolLib.Sources.Map.Comparison
+{
+    class MapFileAddressRangeComparer : IComparer<MapFile>
+    {
+        #region IComparer Members
+        int IComparer<MapFile>.Compare( MapFile aLeft, MapFile aRight )
+        {
+            int ret = -1;
+            //
+            if ( aLeft == null || aRight == null )
+            {
+                if ( aRight == null )
+                {
+                    ret = 1;
+                }
+            }
+            else
+            {
+                ret = aLeft.AddressRangeStart.CompareTo( aRight.AddressRangeStart );
+            }
+            //
+            return ret;
+        }
+        #endregion
+    }
+}