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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 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 <http://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