imgtools/imglib/memmap/include/memmaputils.h
author Ross Qin <ross.qin@nokia.com>
Thu, 28 Oct 2010 11:18:50 +0800
changeset 667 a3b39a14147a
parent 590 360bd6b35136
permissions -rw-r--r--
Remove the PrintingServices component from TB10.1 on wards(on behalf of dane.waby@nokia.com)
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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/*
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* Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of the License "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description: 
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*
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*/
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#if !defined(__MEMMAPUTILS_H__)
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#define __MEMMAPUTILS_H__
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#include "h_utl.h"
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#ifdef WIN32
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#ifdef _STLP_INTERNAL_WINDOWS_H
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#define __INTERLOCKED_DECLARED
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#endif
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#include <windows.h>
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#include <io.h>
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#endif
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#include <fcntl.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <stdio.h>
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const int KStatTrue = 1;
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const int KStatFalse = 0;
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/** 
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class MemmapUtils
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@internalComponent
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@released
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*/
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class MemmapUtils
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{
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private:
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	// Memory map file descriptor
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	int iHFile;
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#ifdef WIN32
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	// Windows specific Memory map object handle
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	HANDLE iHMMFile;
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#endif
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	// Map file name
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	string iMapFileName;
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public:
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	MemmapUtils();
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	~MemmapUtils();
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	// Generate temporary file name
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	void GetMapFileName(string& aFile);
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	// Create the memory map
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	void* OpenMemMapPointer(unsigned long aOffset, unsigned long aSize);
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	// Close the memory map
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	int CloseMemMapPointer(void* aData, unsigned long aSize);
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	// Open the file for memory mapping
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	int OpenMapFile();
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	// Close the memory mapped file
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	void CloseMapFile();
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	// Delete the memory mapped file
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	void DeleteMapFile();
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	int IsMapFileOpen();
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	// Windows specific file mapping object
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	int CreateFileMapObject(unsigned long aSize);
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	void CloseFileMapObject();
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};
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#endif //__MEMMAPUTILS_H__