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// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
******************************************************************************
*
* Copyright (C) 1999-2011, International Business Machines
* Corporation and others. All Rights Reserved.
*
******************************************************************************/
/*----------------------------------------------------------------------------------
*
* Memory mapped file wrappers for use by the ICU Data Implementation
*
* Porting note: The implementation of these functions is very platform specific.
* Not all platforms can do real memory mapping. Those that can't
* still must implement these functions, getting the data into memory using
* whatever means are available.
*
* These functions are part of the ICU internal implementation, and
* are not inteded to be used directly by applications.
*
*----------------------------------------------------------------------------------*/
#ifndef __UMAPFILE_H__
#define __UMAPFILE_H__
#include "unicode/putil.h"
#include "unicode/udata.h"
#include "putilimp.h"
U_CFUNC UBool uprv_mapFile(UDataMemory *pdm, const char *path, UErrorCode *status);
U_CFUNC void uprv_unmapFile(UDataMemory *pData);
/* MAP_NONE: no memory mapping, no file access at all */
#define MAP_NONE 0
#define MAP_WIN32 1
#define MAP_POSIX 2
#define MAP_STDIO 3
#define MAP_390DLL 4
#if UCONFIG_NO_FILE_IO
# define MAP_IMPLEMENTATION MAP_NONE
#elif U_PLATFORM_USES_ONLY_WIN32_API
# define MAP_IMPLEMENTATION MAP_WIN32
#elif U_HAVE_MMAP || U_PLATFORM == U_PF_OS390
# if U_PLATFORM == U_PF_OS390 && defined (OS390_STUBDATA)
/* No memory mapping for 390 batch mode. Fake it using dll loading. */
# define MAP_IMPLEMENTATION MAP_390DLL
# else
# define MAP_IMPLEMENTATION MAP_POSIX
# endif
#else /* unknown platform, no memory map implementation: use stdio.h and uprv_malloc() instead */
# define MAP_IMPLEMENTATION MAP_STDIO
#endif
#endif
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