/*

* 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: 

*

*/

#if !defined(__MEMMAPUTILS_H__)

#define __MEMMAPUTILS_H__

#include "h_utl.h"

#ifdef WIN32

#ifdef _STLP_INTERNAL_WINDOWS_H

#define __INTERLOCKED_DECLARED

#endif

#include <windows.h>

#include <io.h>

#endif

#include <fcntl.h>

#include <sys/types.h>

#include <sys/stat.h>

#include <stdio.h>

const int KStatTrue = 1;

const int KStatFalse = 0;

/** 

class MemmapUtils

@internalComponent

@released

*/

class MemmapUtils

{

private:

	// Memory map file descriptor

	int iHFile;

#ifdef WIN32

	// Windows specific Memory map object handle

	HANDLE iHMMFile;

#endif

	// Map file name

	string iMapFileName;

public:

	MemmapUtils();

	~MemmapUtils();

	// Generate temporary file name

	void GetMapFileName(string& aFile);

	// Create the memory map

	void* OpenMemMapPointer(unsigned long aOffset, unsigned long aSize);

	// Close the memory map

	int CloseMemMapPointer(void* aData, unsigned long aSize);

	// Open the file for memory mapping

	int OpenMapFile();

	// Close the memory mapped file

	void CloseMapFile();

	// Delete the memory mapped file

	void DeleteMapFile();

	int IsMapFileOpen();

	// Windows specific file mapping object

	int CreateFileMapObject(unsigned long aSize);

	void CloseFileMapObject();

};

#endif //__MEMMAPUTILS_H__