--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/loggingservices/eventlogger/LogServ/src/LogDynBuf.cpp	Fri Jan 22 11:06:30 2010 +0200
@@ -0,0 +1,72 @@
+// 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:
+//
+#include "LogDynBuf.h"
+
+/**
+Constructs RLogDynBuf object with the specified granularity.
+
+@param aGranularity RLogDynBuf granularity. 
+@endcode
+
+@leave KErrNoMemory Out of memory.
+*/
+void RLogDynBuf::CreateLC(TInt aGranularity)
+	{
+	iGranularity = aGranularity;
+	iBuf.CreateL(aGranularity);
+	CleanupClosePushL(*this);
+	}
+
+/**
+Destroys the buffer
+*/
+void RLogDynBuf::Close()
+	{
+	iBuf.Close();	
+	}
+
+/**
+Attempts to append aStr to the end of the buffer. If the buffer has not enough available space,
+AppendL() will try to expand the buffer before the append operation.
+
+@param aStr 16-bit desrpiptor to be appended to the end of the buffer.
+
+@leave KErrNoMemory Out of memory.
+*/	
+void RLogDynBuf::AppendL(const TDesC& aStr)
+	{
+	DoAllocL(aStr.Length());
+	iBuf.Append(aStr);
+	}
+
+/**
+If aLen is bigger than the available buffer space, the buffer will be expanded.
+
+@param aLen The new size of the buffer, in bytes.  
+
+@leave KErrNoMemory Out of memory.
+*/
+void RLogDynBuf::DoAllocL(TInt aLen)
+	{
+	__ASSERT_DEBUG(aLen >= 0, User::Invariant());
+	const TInt len = iBuf.Length();
+	TInt maxLen = iBuf.MaxLength();
+	TInt available = maxLen - len;
+	TInt overflow = aLen - available;
+	if(overflow > 0)
+		{
+		iBuf.ReAllocL(maxLen + (overflow / iGranularity + 1) * iGranularity);
+		}
+	}