/*

* Copyright (c) 2006 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:  

*

*/

#ifndef _MEMORYLOGGING_H

#define _MEMORYLOGGING_H

// INCLUDES

#include <e32std.h>

#include <e32def.h>

#include <flogger.h>

#include <f32file.h>

#ifdef OOM_LOGGING

// CONSTANTS

_LIT( KMEMLogDir,               "WebCore");

_LIT( KMEMLogFile,              "Memory.log");

_LIT8( KFuncMemLogBegin, "BEGIN: %S @ %S/%d InSize -> %d" );

_LIT8( KFuncMemLogEnd, "END: Peek -> %d Diff -> %d Accumulated Peek -> %d" );

_LIT8( KTab, "\t" );

// MACROS

#define MEM_LOG(a)		{ _LIT8(temp, a); RFileLogger::Write(KMEMLogDir, KMEMLogFile, EFileLoggingModeAppend, temp); }

#define MEM_LOGF		FPrint

// FUNCTION DECLARATIONS

inline void FPrint(const TRefByValue<const TDesC8> aFmt, ...)

{

    VA_LIST list;

    VA_START(list,aFmt);

    RFileLogger::WriteFormat(KMEMLogDir, KMEMLogFile, EFileLoggingModeAppend, aFmt, list);

}

// CLASS DECLARATION

/**

*  A utility class to record the memory usage inside a function

*  @lib memman.lib

*  @since 3.1

*/

class FunctionLogger

	{

	public:

		inline FunctionLogger( const TDesC8& func, const TDesC8& file, TInt line, TInt size );

		inline ~FunctionLogger();

		TInt _peek;

		TInt _used;

		TInt _accum;

		TInt _inSize;

		static RPointerArray<FunctionLogger> loggers;

	};

// MEMBER FUNCTIONS

//-----------------------------------------------------------------------------

// FunctionLogger::FunctionLogger

//-----------------------------------------------------------------------------

inline FunctionLogger::FunctionLogger( const TDesC8& func, const TDesC8& file, TInt line, TInt size ) 

	: _peek( 0 ), _used( 0 ), _accum( 0 )

	{

		TBuf8<512>	buf;

		// indent

		for( TInt i=0; i<loggers.Count(); ++i )	buf.Append( KTab );

		buf.Append( KFuncMemLogBegin );

		// write the logger info

		MEM_LOGF( buf, &func, &file, line, size );

		_inSize = size;

		// insert this logger to the head of loggers array

		loggers.Insert( this, 0 );

	}

//-----------------------------------------------------------------------------

// FunctionLogger::~FunctionLogger

//-----------------------------------------------------------------------------

inline FunctionLogger::~FunctionLogger()

	{

		TBuf8<512>	buf;

		// indent

		for( TInt i=0; i<loggers.Count()-1; ++i )	buf.Append( KTab );

		buf.Append( KFuncMemLogEnd );

		_accum += _peek;

		MEM_LOGF( buf, _peek, _used, _accum );

		// remove the logger

		loggers.Remove( 0 );

		// update its parents' _accum

		if( loggers.Count() > 0 )

			for( TInt i=0; i<loggers.Count(); ++i )

				loggers[ i ]->_accum += _peek;

	}

#else // OOM_LOGGING

#define MEM_LOG	{}

#define MEM_LOGF	{}

#endif

#endif

// END OF FILE