--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/crashanalysercmd/PerfToolsSharedLibraries/Engine/SymbianUtils/TextUtilities/Readers/Types/Binary/AsyncBinaryReaderBase.cs	Thu Feb 11 15:50:58 2010 +0200
@@ -0,0 +1,118 @@
+/*
+* 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.Tracer;
+
+namespace SymbianUtils
+{
+	public abstract class AsyncBinaryReaderBase : AsyncReaderBase
+	{
+		#region Construct & destruct
+		protected AsyncBinaryReaderBase()
+            : this( null )
+		{
+		}
+        
+        protected AsyncBinaryReaderBase( ITracer aTracer )
+            : base( aTracer )
+        {
+        }
+        #endregion
+
+		#region Read handlers
+		protected virtual bool ContinueProcessing()
+		{
+			return false;
+		}
+
+		protected virtual bool ImmediateAbort()
+		{
+			return false;
+		}
+
+		protected virtual void HandleReadBytes( byte[] aData )
+		{
+		}
+		#endregion
+
+		#region Abstract reading framework
+		protected abstract byte[] ProvideReadBytes();
+		#endregion
+
+		#region Internal methods
+		protected override void PerformOperation()
+		{
+			bool forcedContinue = false;
+			bool immediateAbort = false;
+			byte[] bytes;
+			//
+			lock( this )
+			{
+				bytes = ProvideReadBytes();
+				forcedContinue = ContinueProcessing();
+				immediateAbort = ImmediateAbort();
+			}
+
+            System.DateTime tenPercentTime = DateTime.Now;
+
+			int oldProgress = 0;
+            int newProgress = 0;
+			while ( ( bytes != null && bytes.Length > 0 ) || forcedContinue && !immediateAbort )
+			{
+				lock( this )
+				{
+					HandleReadBytes( bytes );
+				}
+				//
+				lock( this )
+				{
+					newProgress = Progress;
+					if	( newProgress != oldProgress )
+					{
+#if DEBUG
+                        if ( newProgress > 0 && ( newProgress % 10 ) == 0 )
+                        {
+                            System.DateTime now = DateTime.Now;
+                            long intermediateTickDuration = ( ( now.Ticks - tenPercentTime.Ticks ) / 100 );
+                            System.Diagnostics.Debug.WriteLine( newProgress.ToString( "d2" ) + " % COMPLETE - " + intermediateTickDuration.ToString( "d12" ) );
+                            tenPercentTime = now;
+                        }
+#endif
+                        NotifyEvent( TEvent.EReadingProgress );
+                        oldProgress = newProgress;
+					}
+					bytes = ProvideReadBytes();
+				}
+				//
+				lock( this )
+				{
+					forcedContinue = ContinueProcessing();
+				}
+			}
+
+            System.DateTime endTime = DateTime.Now;
+            long tickDuration = ( ( endTime.Ticks - iOperationStartTime.Ticks ) / 100 );
+            System.Diagnostics.Debug.WriteLine( "BINARY READ COMPLETE - " + tickDuration.ToString( "d12" ) );
+        }
+
+		#endregion
+	}
+}