1 /* Prefer faster, non-thread-safe stdio functions if available. 2 3 Copyright (C) 2001, 2002, 2003, 2004 Free Software Foundation, Inc. 4 5 This program is free software; you can redistribute it and/or modify 6 it under the terms of the GNU General Public License as published by 7 the Free Software Foundation; either version 2, or (at your option) 8 any later version. 9 10 This program is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 GNU General Public License for more details. 14 15 You should have received a copy of the GNU General Public License along 16 with this program; if not, write to the Free Software Foundation, 17 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ 18 19 /* Written by Jim Meyering. */ 20 21 #ifndef UNLOCKED_IO_H 22 # define UNLOCKED_IO_H 1 23 24 /* These are wrappers for functions/macros from the GNU C library, and 25 from other C libraries supporting POSIX's optional thread-safe functions. 26 27 The standard I/O functions are thread-safe. These *_unlocked ones are 28 more efficient but not thread-safe. That they're not thread-safe is 29 fine since all of the applications in this package are single threaded. 30 31 Also, some code that is shared with the GNU C library may invoke 32 the *_unlocked functions directly. On hosts that lack those 33 functions, invoke the non-thread-safe versions instead. */ 34 35 # include <stdio.h> 36 37 # if HAVE_DECL_CLEARERR_UNLOCKED 38 # undef clearerr 39 # define clearerr(x) clearerr_unlocked (x) 40 # else 41 # define clearerr_unlocked(x) clearerr (x) 42 # endif 43 44 # if HAVE_DECL_FEOF_UNLOCKED 45 # undef feof 46 # define feof(x) feof_unlocked (x) 47 # else 48 # define feof_unlocked(x) feof (x) 49 # endif 50 51 # if HAVE_DECL_FERROR_UNLOCKED 52 # undef ferror 53 # define ferror(x) ferror_unlocked (x) 54 # else 55 # define ferror_unlocked(x) ferror (x) 56 # endif 57 58 # if HAVE_DECL_FFLUSH_UNLOCKED 59 # undef fflush 60 # define fflush(x) fflush_unlocked (x) 61 # else 62 # define fflush_unlocked(x) fflush (x) 63 # endif 64 65 # if HAVE_DECL_FGETS_UNLOCKED 66 # undef fgets 67 # define fgets(x,y,z) fgets_unlocked (x,y,z) 68 # else 69 # define fgets_unlocked(x,y,z) fgets (x,y,z) 70 # endif 71 72 # if HAVE_DECL_FPUTC_UNLOCKED 73 # undef fputc 74 # define fputc(x,y) fputc_unlocked (x,y) 75 # else 76 # define fputc_unlocked(x,y) fputc (x,y) 77 # endif 78 79 # if HAVE_DECL_FPUTS_UNLOCKED 80 # undef fputs 81 # define fputs(x,y) fputs_unlocked (x,y) 82 # else 83 # define fputs_unlocked(x,y) fputs (x,y) 84 # endif 85 86 # if HAVE_DECL_FREAD_UNLOCKED 87 # undef fread 88 # define fread(w,x,y,z) fread_unlocked (w,x,y,z) 89 # else 90 # define fread_unlocked(w,x,y,z) fread (w,x,y,z) 91 # endif 92 93 # if HAVE_DECL_FWRITE_UNLOCKED 94 # undef fwrite 95 # define fwrite(w,x,y,z) fwrite_unlocked (w,x,y,z) 96 # else 97 # define fwrite_unlocked(w,x,y,z) fwrite (w,x,y,z) 98 # endif 99 100 # if HAVE_DECL_GETC_UNLOCKED 101 # undef getc 102 # define getc(x) getc_unlocked (x) 103 # else 104 # define getc_unlocked(x) getc (x) 105 # endif 106 107 # if HAVE_DECL_GETCHAR_UNLOCKED 108 # undef getchar 109 # define getchar() getchar_unlocked () 110 # else 111 # define getchar_unlocked() getchar () 112 # endif 113 114 # if HAVE_DECL_PUTC_UNLOCKED 115 # undef putc 116 # define putc(x,y) putc_unlocked (x,y) 117 # else 118 # define putc_unlocked(x,y) putc (x,y) 119 # endif 120 121 # if HAVE_DECL_PUTCHAR_UNLOCKED 122 # undef putchar 123 # define putchar(x) putchar_unlocked (x) 124 # else 125 # define putchar_unlocked(x) putchar (x) 126 # endif 127 128 # undef flockfile 129 # define flockfile(x) ((void) 0) 130 131 # undef ftrylockfile 132 # define ftrylockfile(x) 0 133 134 # undef funlockfile 135 # define funlockfile(x) ((void) 0) 136 137 #endif /* UNLOCKED_IO_H */ 138
