--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/crashanalysercmd/PerfToolsSharedLibraries/Engine/SymbianUtils/TextUtilities/Readers/Types/Array/AsyncEnumerableReader.cs	Thu Feb 11 15:50:58 2010 +0200
@@ -0,0 +1,124 @@
+/*
+* 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.Generic;
+using SymbianUtils.Tracer;
+
+namespace SymbianUtils.TextUtilities.Readers.Types.Array
+{
+	public abstract class AsyncEnumerableReader<TType> : AsyncReaderBase
+	{
+		#region Constructors
+        protected AsyncEnumerableReader( ITracer aTracer )
+            : base( aTracer )
+        {
+        }
+
+        protected AsyncEnumerableReader( int aCount, IEnumerator<TType> aEnumerator )
+            : this( aCount, aEnumerator, null )
+        {
+        }
+
+        protected AsyncEnumerableReader( int aCount, IEnumerator<TType> aEnumerator, ITracer aTracer )
+            : base( aTracer )
+		{
+            Setup( aCount, aEnumerator );
+		}
+		#endregion
+
+        #region API
+        protected void Setup( long aCount, IEnumerator<TType> aEnumerator )
+        {
+            iCount = aCount;
+            iEnumerator = aEnumerator;
+        }
+        #endregion
+
+        #region Abstract reading framework
+        protected abstract void HandleObject( TType aObject, long aIndex, long aCount );
+		#endregion
+
+        #region From AsyncReaderBase
+        protected override long Size
+        {
+            get { return iCount; }
+        }
+
+        protected override long Position
+        {
+            get { return iCurrentIndex; }
+        }
+        #endregion
+
+        #region Properties
+        #endregion
+
+		#region Internal methods
+		protected override void PerformOperation()
+		{
+#if DEBUG
+            System.DateTime tenPercentTime = DateTime.Now;
+#endif
+            iCurrentIndex = -1;
+            int newProgress = 0;
+            int oldProgress = 0;
+            //
+            bool hasEntry = iEnumerator.MoveNext();
+            while ( hasEntry )
+            {
+                ++iCurrentIndex;
+                TType entry = iEnumerator.Current;
+                HandleObject( entry, iCurrentIndex, iCount );
+                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;
+                }
+
+                // Move to next item
+                hasEntry = iEnumerator.MoveNext();
+            }
+
+#if DEBUG
+            System.DateTime endTime = DateTime.Now;
+            long tickDuration = ( ( endTime.Ticks - iOperationStartTime.Ticks ) / 100 );
+            System.Diagnostics.Debug.WriteLine( "ARRAY READ COMPLETE - " + tickDuration.ToString( "d12" ) );
+#endif
+        }
+		#endregion
+
+        #region Data members
+        private long iCount = 0;
+        private IEnumerator<TType> iEnumerator = null;
+        private long iCurrentIndex = -1;
+        #endregion
+	}
+}