imgtools/imglib/memmap/include/memmaputils.h
changeset 0 044383f39525
child 590 360bd6b35136
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/imgtools/imglib/memmap/include/memmaputils.h	Tue Oct 27 16:36:35 2009 +0000
@@ -0,0 +1,86 @@
+/*
+* 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__
+
+#ifdef WIN32
+#include <windows.h>
+#include <io.h>
+#endif
+
+#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <stdio.h>
+#include <string>
+#include <fstream>
+
+#include "h_utl.h"
+
+typedef std::string String;
+typedef std::ofstream Ofstream;
+
+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__