1 | /* Prefer faster, non-thread-safe stdio functions if available. |
2 | |
3 | Copyright (C) 2001-2004, 2009-2019 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 3 of the License, or |
8 | (at your option) 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 |
16 | along with this program. If not, see <https://www.gnu.org/licenses/>. */ |
17 | |
18 | /* Written by Jim Meyering. */ |
19 | |
20 | #ifndef UNLOCKED_IO_H |
21 | # define UNLOCKED_IO_H 1 |
22 | |
23 | /* These are wrappers for functions/macros from the GNU C library, and |
24 | from other C libraries supporting POSIX's optional thread-safe functions. |
25 | |
26 | The standard I/O functions are thread-safe. These *_unlocked ones are |
27 | more efficient but not thread-safe. That they're not thread-safe is |
28 | fine since all of the applications in this package are single threaded. |
29 | |
30 | Also, some code that is shared with the GNU C library may invoke |
31 | the *_unlocked functions directly. On hosts that lack those |
32 | functions, invoke the non-thread-safe versions instead. */ |
33 | |
34 | # include <stdio.h> |
35 | |
36 | # if HAVE_DECL_CLEARERR_UNLOCKED |
37 | # undef clearerr |
38 | # define clearerr(x) clearerr_unlocked (x) |
39 | # else |
40 | # define clearerr_unlocked(x) clearerr (x) |
41 | # endif |
42 | |
43 | # if HAVE_DECL_FEOF_UNLOCKED |
44 | # undef feof |
45 | # define feof(x) feof_unlocked (x) |
46 | # else |
47 | # define feof_unlocked(x) feof (x) |
48 | # endif |
49 | |
50 | # if HAVE_DECL_FERROR_UNLOCKED |
51 | # undef ferror |
52 | # define ferror(x) ferror_unlocked (x) |
53 | # else |
54 | # define ferror_unlocked(x) ferror (x) |
55 | # endif |
56 | |
57 | # if HAVE_DECL_FFLUSH_UNLOCKED |
58 | # undef fflush |
59 | # define fflush(x) fflush_unlocked (x) |
60 | # else |
61 | # define fflush_unlocked(x) fflush (x) |
62 | # endif |
63 | |
64 | # if HAVE_DECL_FGETS_UNLOCKED |
65 | # undef fgets |
66 | # define fgets(x,y,z) fgets_unlocked (x,y,z) |
67 | # else |
68 | # define fgets_unlocked(x,y,z) fgets (x,y,z) |
69 | # endif |
70 | |
71 | # if HAVE_DECL_FPUTC_UNLOCKED |
72 | # undef fputc |
73 | # define fputc(x,y) fputc_unlocked (x,y) |
74 | # else |
75 | # define fputc_unlocked(x,y) fputc (x,y) |
76 | # endif |
77 | |
78 | # if HAVE_DECL_FPUTS_UNLOCKED |
79 | # undef fputs |
80 | # define fputs(x,y) fputs_unlocked (x,y) |
81 | # else |
82 | # define fputs_unlocked(x,y) fputs (x,y) |
83 | # endif |
84 | |
85 | # if HAVE_DECL_FREAD_UNLOCKED |
86 | # undef fread |
87 | # define fread(w,x,y,z) fread_unlocked (w,x,y,z) |
88 | # else |
89 | # define fread_unlocked(w,x,y,z) fread (w,x,y,z) |
90 | # endif |
91 | |
92 | # if HAVE_DECL_FWRITE_UNLOCKED |
93 | # undef fwrite |
94 | # define fwrite(w,x,y,z) fwrite_unlocked (w,x,y,z) |
95 | # else |
96 | # define fwrite_unlocked(w,x,y,z) fwrite (w,x,y,z) |
97 | # endif |
98 | |
99 | # if HAVE_DECL_GETC_UNLOCKED |
100 | # undef getc |
101 | # define getc(x) getc_unlocked (x) |
102 | # else |
103 | # define getc_unlocked(x) getc (x) |
104 | # endif |
105 | |
106 | # if HAVE_DECL_GETCHAR_UNLOCKED |
107 | # undef getchar |
108 | # define getchar() getchar_unlocked () |
109 | # else |
110 | # define getchar_unlocked() getchar () |
111 | # endif |
112 | |
113 | # if HAVE_DECL_PUTC_UNLOCKED |
114 | # undef putc |
115 | # define putc(x,y) putc_unlocked (x,y) |
116 | # else |
117 | # define putc_unlocked(x,y) putc (x,y) |
118 | # endif |
119 | |
120 | # if HAVE_DECL_PUTCHAR_UNLOCKED |
121 | # undef putchar |
122 | # define putchar(x) putchar_unlocked (x) |
123 | # else |
124 | # define putchar_unlocked(x) putchar (x) |
125 | # endif |
126 | |
127 | # undef flockfile |
128 | # define flockfile(x) ((void) 0) |
129 | |
130 | # undef ftrylockfile |
131 | # define ftrylockfile(x) 0 |
132 | |
133 | # undef funlockfile |
134 | # define funlockfile(x) ((void) 0) |
135 | |
136 | #endif /* UNLOCKED_IO_H */ |
137 | |