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 30 U_CFUNC UBool uprv_mapFile(UDataMemory *pdm, const char *path); 31 U_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
