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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 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