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