crashanalysercmd/PerfToolsSharedLibraries/Engine/SymbianETMLib/Common/State/Implementations/ETMDecodeStateASync.cs
changeset 0 818e61de6cd1
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/crashanalysercmd/PerfToolsSharedLibraries/Engine/SymbianETMLib/Common/State/Implementations/ETMDecodeStateASync.cs	Thu Feb 11 15:50:58 2010 +0200
@@ -0,0 +1,81 @@
+/*
+* 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 SymbianUtils.BasicTypes;
+using SymbianETMLib.Common.Types;
+using SymbianETMLib.Common.Packets;
+using SymbianETMLib.Common.Exception;
+
+namespace SymbianETMLib.Common.State
+{
+    public class ETMDecodeStateASync : ETMDecodeState
+    {
+        #region Constructors
+        public ETMDecodeStateASync( ETMStateData aManager )
+            : base( aManager )
+        {
+        }
+        #endregion
+
+        #region API
+        public override ETMDecodeState HandleByte( SymByte aByte )
+        {
+            ETMDecodeState nextState = this;
+            //
+            if ( aByte == 0 )
+            {
+                ++iASyncConsecutiveNullByteCount;
+            }
+            else if ( aByte == 0x80 && iASyncConsecutiveNullByteCount == 5 )
+            {
+                // That's the start of the a-sync packet
+                iASyncConsecutiveNullByteCount = 0;
+                base.StateData.SetSynchronized();
+                nextState = new ETMDecodeStateSynchronized( base.StateData );
+                Trace();
+            }
+            else
+            {
+                // Invalid byte
+                throw new ETMException( "ERROR - data is corrupt - expected null byte or end marker during A-SYNC" );
+            }
+            //
+            return nextState;
+        }
+        #endregion
+
+        #region Properties
+        #endregion
+
+        #region Internal methods
+        private void Trace()
+        {
+            base.DbgTrace( "A-SYNC", string.Empty );
+        }
+        #endregion
+
+        #region From System.Object
+        #endregion
+
+        #region Data members
+        private int iASyncConsecutiveNullByteCount = 0;
+        #endregion
+    }
+}