1 /* 2 ****************************************************************************** 3 * 4 * Copyright (C) 1999-2010, 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 29 U_CFUNC UBool uprv_mapFile(UDataMemory *pdm, const char *path); 30 U_CFUNC void uprv_unmapFile(UDataMemory *pData); 31 32 /* MAP_NONE: no memory mapping, no file access at all */ 33 #define MAP_NONE 0 34 #define MAP_WIN32 1 35 #define MAP_POSIX 2 36 #define MAP_STDIO 3 37 #define MAP_390DLL 4 38 39 #if UCONFIG_NO_FILE_IO 40 # define MAP_IMPLEMENTATION MAP_NONE 41 #elif defined(U_WINDOWS) 42 # define MAP_IMPLEMENTATION MAP_WIN32 43 #elif U_HAVE_MMAP || defined(OS390) 44 # if defined(OS390) && defined (OS390_STUBDATA) 45 /* No memory mapping for 390 batch mode. Fake it using dll loading. */ 46 # define MAP_IMPLEMENTATION MAP_390DLL 47 # else 48 # define MAP_IMPLEMENTATION MAP_POSIX 49 # endif 50 #else /* unknown platform, no memory map implementation: use stdio.h and uprv_malloc() instead */ 51 # define MAP_IMPLEMENTATION MAP_STDIO 52 #endif 53 54 #endif 55