--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/imgtools/imglib/memmap/source/memmaputils.cpp	Tue Oct 27 16:36:35 2009 +0000
@@ -0,0 +1,237 @@
+/*
+* 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: 
+*
+*/
+
+
+#include "memmaputils.h"
+
+/**
+Constructor: MemmapUtils class
+Initilize the parameters to data members.
+
+@internalComponent
+@released
+*/
+MemmapUtils::MemmapUtils( )
+: iHFile(0)
+{
+#ifdef WIN32
+	iHMMFile = 0;
+#endif
+}
+
+
+/**
+Destructor: MemmapUtils class
+Deallocates the memory for data members
+
+@internalComponent
+@released
+*/
+MemmapUtils::~MemmapUtils( )
+{
+	CloseMapFile();
+
+	DeleteMapFile();
+}
+
+/**
+OpenMemMapPointer: Opens the memory map pointer
+
+@internalComponent
+@released
+
+@param aOffset - Starting offset of the memory map
+@param aSize - Size of the memory map
+*/
+void* MemmapUtils::OpenMemMapPointer(unsigned long aOffset, unsigned long aSize)
+{
+#ifdef WIN32
+	// Create map view pointer
+	return (void*)MapViewOfFile(iHMMFile, FILE_MAP_ALL_ACCESS, 0, aOffset, aSize);
+#else
+	return KStatFalse;
+#endif
+}
+
+/**
+CloseMemMapPointer: Closes the memory map pointer
+
+@internalComponent
+@released
+
+@param aData - Memory map pointer
+@param aSize - Size of the memory map
+*/
+int MemmapUtils::CloseMemMapPointer(void* aData, unsigned long aSize)
+{
+	unsigned long statusFlg = KStatFalse;
+
+	if(aData && iHFile)
+	{
+#ifdef WIN32
+		statusFlg = FlushViewOfFile(aData, aSize);
+		statusFlg &= FlushFileBuffers((HANDLE)_get_osfhandle(iHFile));
+		statusFlg &= UnmapViewOfFile(aData);
+#endif
+	}
+
+	if(statusFlg == (unsigned long)KStatFalse)
+	{
+		return KStatFalse;
+	}
+
+	return KStatTrue;
+}
+
+/**
+OpenMapFile: Opens the file for memory mapping
+
+@internalComponent
+@released
+*/
+int MemmapUtils::OpenMapFile()
+{
+	GetMapFileName(iMapFileName);
+
+	if(iMapFileName.empty())
+	{
+		return KStatFalse;
+	}
+
+#ifdef WIN32
+	iHFile = open((const char*)iMapFileName.data(), (_O_CREAT | _O_BINARY | _O_RDWR));
+#endif
+
+	if((iHFile == (-1)) || (!iHFile))
+	{
+		Print(EAlways, "Cannot open the memory map file %s", (char*)iMapFileName.data());
+		iHFile = 0;
+
+		return KStatFalse;
+	}
+
+	return KStatTrue;
+}
+
+/**
+IsMapFileOpen: Returns the open status of the memory map file
+
+@internalComponent
+@released
+*/
+int MemmapUtils::IsMapFileOpen()
+{
+	return (iHFile) ? KStatTrue : KStatFalse;
+}
+
+/**
+CloseMapFile: Closes the file for memory mapping
+
+@internalComponent
+@released
+*/
+void MemmapUtils::CloseMapFile()
+{
+	if(iHFile)
+	{
+#ifdef WIN32
+		close(iHFile);
+#endif
+		iHFile = 0;
+	}
+}
+
+/**
+DeleteMapFile: Deletes the file for memory mapping
+
+@internalComponent
+@released
+*/
+void MemmapUtils::DeleteMapFile()
+{
+#ifdef WIN32
+	unlink((char*)iMapFileName.data());
+#endif
+}
+
+/**
+CreateFileMapObject: Creates the map file object
+
+@internalComponent
+@released
+
+@param aSize - Size of the memory map
+*/
+int MemmapUtils::CreateFileMapObject(unsigned long aSize)
+{
+#ifdef WIN32
+	// Create memory map object for the given size of the file
+	iHMMFile = CreateFileMapping((HANDLE)_get_osfhandle(iHFile), NULL, 
+				PAGE_READWRITE, 0, aSize, NULL);
+
+	if(!iHMMFile || (iHMMFile == INVALID_HANDLE_VALUE))
+	{
+		return KStatFalse;
+	}
+#endif
+
+	return KStatTrue;
+}
+
+/**
+CloseFileMapObject: Closes the map file object
+
+@internalComponent
+@released
+*/
+void MemmapUtils::CloseFileMapObject()
+{
+#ifdef WIN32
+	if(iHMMFile)
+	{
+		CloseHandle(iHMMFile);
+		iHMMFile = 0;
+	}
+#endif
+}
+
+/**
+GetMapFileName: Generates a temporary file name
+
+@internalComponent
+@released
+
+@param aFile - Returns the name of the temporary file
+*/
+void MemmapUtils::GetMapFileName(String& aFile)
+{
+	char *fileName = 0;
+
+#ifdef WIN32
+	fileName = new char[MAX_PATH];
+
+	if(fileName)
+		GetTempFileName(".", "MMAP", 0, fileName);
+
+	aFile.assign(fileName);
+#endif
+
+	if(fileName)
+		delete[] fileName;
+
+}
+