1/*
2******************************************************************************
3*
4*   Copyright (C) 1999-2011, International Business Machines
5*   Corporation and others.  All Rights Reserved.
6*
7******************************************************************************/
8
9/*----------------------------------------------------------------------------------
10 *
11 *       Memory mapped file wrappers for use by the ICU Data Implementation
12 *
13 *           Porting note:  The implementation of these functions is very platform specific.
14 *             Not all platforms can do real memory mapping.  Those that can't
15 *             still must implement these functions, getting the data into memory using
16 *             whatever means are available.
17 *
18 *            These functions are part of the ICU internal implementation, and
19 *            are not inteded to be used directly by applications.
20 *
21 *----------------------------------------------------------------------------------*/
22
23#ifndef __UMAPFILE_H__
24#define __UMAPFILE_H__
25
26#include "unicode/putil.h"
27#include "unicode/udata.h"
28#include "putilimp.h"
29
30U_CFUNC UBool uprv_mapFile(UDataMemory *pdm, const char *path);
31U_CFUNC void  uprv_unmapFile(UDataMemory *pData);
32
33/* MAP_NONE: no memory mapping, no file access at all */
34#define MAP_NONE        0
35#define MAP_WIN32       1
36#define MAP_POSIX       2
37#define MAP_STDIO       3
38#define MAP_390DLL      4
39
40#if UCONFIG_NO_FILE_IO
41#   define MAP_IMPLEMENTATION MAP_NONE
42#elif U_PLATFORM_USES_ONLY_WIN32_API
43#   define MAP_IMPLEMENTATION MAP_WIN32
44#elif U_HAVE_MMAP || U_PLATFORM == U_PF_OS390
45#   if U_PLATFORM == U_PF_OS390 && defined (OS390_STUBDATA)
46        /*   No memory mapping for 390 batch mode.  Fake it using dll loading.  */
47#       define MAP_IMPLEMENTATION MAP_390DLL
48#   else
49#       define MAP_IMPLEMENTATION MAP_POSIX
50#   endif
51#else /* unknown platform, no memory map implementation: use stdio.h and uprv_malloc() instead */
52#   define MAP_IMPLEMENTATION MAP_STDIO
53#endif
54
55#endif
56