diff -r 000000000000 -r 818e61de6cd1 crashanalysercmd/PerfToolsSharedLibraries/Engine/SymbolLib/Engines/Base/SymbolEngineBase.cs
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/crashanalysercmd/PerfToolsSharedLibraries/Engine/SymbolLib/Engines/Base/SymbolEngineBase.cs	Thu Feb 11 15:50:58 2010 +0200
@@ -0,0 +1,135 @@
+/*
+* 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.IO;
+using System.Text;
+using System.Threading;
+using System.Collections;
+using SymbianUtils;
+using SymbianUtils.Tracer;
+using SymbolLib.CodeSegDef;
+using SymbolLib.Generics;
+
+namespace SymbolLib.Engines.Common
+{
+    public abstract class SymbolEngineBase : GenericSymbolEngine
+    {
+        #region Events
+        public delegate void ParsingStarted( SymbolEngineBase aEngine, string aFileName );
+        public event ParsingStarted ParsingStartedHandler;
+
+        public delegate void ParsingProgress( SymbolEngineBase aEngine, string aFileName, int aProgress );
+        public event ParsingProgress ParsingProgressHandler;
+
+        public delegate void ParsingCompleted( SymbolEngineBase aEngine, string aFileName );
+        public event ParsingCompleted ParsingCompletedHandler;
+
+        public delegate void CollectionCreated( SymbolEngineBase aEngine, GenericSymbolCollection aCollection );
+        public event CollectionCreated CollectionCreatedHandler; 
+        #endregion
+
+        #region Construct & destruct
+        protected internal SymbolEngineBase( ITracer aTracer )
+            : base( aTracer )
+        {
+        }
+        #endregion
+
+        #region API
+        public abstract bool AddressInRange( long aAddress );
+ 
+        public virtual int FileNameCount
+        {
+            get { return 0; }
+        }
+
+        public virtual string FileName( int aIndex )
+        {
+            return string.Empty;
+        }
+
+        public virtual void LoadFromFile( string aFileName, TSynchronicity aSynchronicity )
+        {
+            throw new NotSupportedException();
+        }
+
+        public virtual bool LoadFromDefinition( CodeSegDefinition aDefinition, TSynchronicity aSynchronicity )
+        {
+            throw new NotSupportedException();
+        }
+
+        public virtual void LoadFromDefinitionCollection( CodeSegDefinitionCollection aCollection, TSynchronicity aSynchronicity )
+        {
+            foreach ( CodeSegDefinition definition in aCollection )
+            {
+                LoadFromDefinition( definition, aSynchronicity );
+            }
+        }
+
+        public virtual void UnloadAll()
+        {
+        }
+
+        public virtual bool Unload( CodeSegDefinition aDefinition )
+        {
+            return false;
+        }
+
+        public virtual bool IsLoaded( CodeSegDefinition aDefinition )
+        {
+            return false;
+        }
+        #endregion
+
+        #region Internal event dispatchers
+        protected void OnParsingStarted( string aFileName )
+        {
+            if  ( ParsingStartedHandler != null )
+            {
+                ParsingStartedHandler( this, aFileName );
+            }
+        }
+
+        protected void OnParsingProgress( string aFileName, int aProgress )
+        {
+            if  ( ParsingProgressHandler != null )
+            {
+                ParsingProgressHandler( this, aFileName, aProgress );
+            }
+        }
+        
+        protected void OnParsingCompleted( string aFileName )
+        {
+            if  ( ParsingCompletedHandler != null )
+            {
+                ParsingCompletedHandler( this, aFileName );
+            }
+        }
+
+        protected void OnCollectionCreated( GenericSymbolCollection aCollection )
+        {
+            if  ( CollectionCreatedHandler != null )
+            {
+                CollectionCreatedHandler( this, aCollection );
+            }
+        }
+        #endregion
+
+        #region Data members
+        #endregion
+    }
+}