--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/kernel/eka/debug/crashMonitor/inc/scmbytestreamutil.h	Mon Oct 19 15:55:17 2009 +0100
@@ -0,0 +1,148 @@
+// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of the License "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:
+// some utility classes for writing data to buffer
+// 
+// WARNING: This file contains some APIs which are internal and are subject
+//          to change without notice. Such APIs should therefore not be used
+//          outside the Kernel and Hardware Services package.
+//
+
+/**
+ @file
+ @internalTechnology
+*/
+#ifndef __SCMBYTESTREAMUTIL_H_
+#define __SCMBYTESTREAMUTIL_H_
+
+#include <e32cmn.h> 
+#include <e32def.h>
+#include <e32const.h>
+
+
+namespace Debug 
+	{ 
+	/**
+	 * Base class for byte stream write - simply deals with the supplied buffer & position 
+	 */
+	class TByteStreamBase
+		{
+	public:
+		TByteStreamBase(TUint8* aBuffer);
+		virtual void SetPosition(TInt aPosition);
+		virtual TInt CurrentPosition() const;
+	
+	protected:	
+		
+		/**
+		 * Pointer to the buffer we will use to write/read to 
+		 */
+		TUint8* iBuffer;
+		
+		/**
+		 * Current position in buffer
+		 */
+		TInt iPos;	
+		};
+	
+	/**
+	 * Class for reading byte stream
+	 */
+	class TByteStreamReader : public TByteStreamBase		
+		{
+	public:
+		TByteStreamReader(TUint8* aBuffer);
+		inline virtual TUint8 ReadByte();
+		inline TUint16 ReadShort();
+		inline TUint32 ReadInt();
+		inline TUint64 ReadInt64();		
+		};	
+
+	/**
+	 * Class for writing byte stream
+	 */
+	class TByteStreamWriter : public TByteStreamBase		
+		{		
+	public:
+		TByteStreamWriter(TUint8* aBuffer, TBool aPhsEnabled = ETrue);	
+		virtual void WriteByte(TUint8 aValue);
+		inline void WriteShort(TUint16 aValue);
+		inline void WriteInt(TUint32 aValue);
+		inline void WriteInt64(TUint64 aValue);
+		inline virtual void EnablePhysicalWriting();
+		inline virtual void DisablePhysicalWriting();
+		inline virtual TBool PhysicalWritingEnabled() const {return iPhysEnabled;};
+		inline TInt GetBytesWritten() const {return iBytesWritten;};	
+		void ResetBytesWritten();
+		
+	protected:
+		
+		/** 
+		 * This records whether or not physical writing via DoPhysical write from set writer
+		 */
+		TBool iPhysEnabled;
+		
+		/**
+		 * Records the number of bytes we have written to our buffer
+		 */
+		TInt iBytesWritten;
+		};	
+		
+	/**
+	 * This is the interface to write to flash
+	 */
+	class MPhysicalWriterImpl 
+		{
+		public:			
+			virtual void DoPhysicalWrite(TAny* aData,TInt aPos, TInt aLen) = 0;
+		};
+	
+	
+	/**
+	 *Class for writing byte stream via cache 
+	 */
+	class TCachedByteStreamWriter : public TByteStreamWriter		
+		{		
+	public:
+			
+		TCachedByteStreamWriter(TUint8* aCacheBuffer, TInt aCacheSize,  TBool aPhysEnabled = ETrue);
+		virtual TInt CurrentPosition() const;
+		virtual void WriteByte(TUint8 aValue);
+		virtual TInt FlushCache();
+		void SetWriterImpl(MPhysicalWriterImpl* aPhysicalWriter);
+		TInt GetCacheSize() const  {return iCacheSize; };
+		
+	protected:		
+		TInt iCacheSize;
+		TUint8* iCacheBuffer;  			
+		MPhysicalWriterImpl* iPhysicalWriter;
+		};
+	
+	/**
+	 * Serialization implementation interface
+	 */
+	class MByteStreamSerializable
+		{
+	public:
+		virtual TInt Serialize(TByteStreamWriter& aWriter) = 0;
+		virtual TInt Deserialize(TByteStreamReader& aReader) = 0;
+ 		virtual TInt GetSize() const = 0;
+		};
+	}
+
+
+#include <scmbytestreamutil.inl>
+
+
+
+#endif /*BYTESTREAMUTIL_H_*/