summaryrefslogtreecommitdiff
path: root/lib/unlocked-io.h
blob: e3f0fcfed4ab20a3286c290dd5270dbd6cb090ac (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
/* Prefer faster, non-thread-safe stdio functions if available.

   Copyright (C) 2001-2004, 2009-2018 Free Software Foundation, Inc.

   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */

/* Written by Jim Meyering.  */

#ifndef UNLOCKED_IO_H
# define UNLOCKED_IO_H 1

/* These are wrappers for functions/macros from the GNU C library, and
   from other C libraries supporting POSIX's optional thread-safe functions.

   The standard I/O functions are thread-safe.  These *_unlocked ones are
   more efficient but not thread-safe.  That they're not thread-safe is
   fine since all of the applications in this package are single threaded.

   Also, some code that is shared with the GNU C library may invoke
   the *_unlocked functions directly.  On hosts that lack those
   functions, invoke the non-thread-safe versions instead.  */

# include <stdio.h>

# if HAVE_DECL_CLEARERR_UNLOCKED
#  undef clearerr
#  define clearerr(x) clearerr_unlocked (x)
# else
#  define clearerr_unlocked(x) clearerr (x)
# endif

# if HAVE_DECL_FEOF_UNLOCKED
#  undef feof
#  define feof(x) feof_unlocked (x)
# else
#  define feof_unlocked(x) feof (x)
# endif

# if HAVE_DECL_FERROR_UNLOCKED
#  undef ferror
#  define ferror(x) ferror_unlocked (x)
# else
#  define ferror_unlocked(x) ferror (x)
# endif

# if HAVE_DECL_FFLUSH_UNLOCKED
#  undef fflush
#  define fflush(x) fflush_unlocked (x)
# else
#  define fflush_unlocked(x) fflush (x)
# endif

# if HAVE_DECL_FGETS_UNLOCKED
#  undef fgets
#  define fgets(x,y,z) fgets_unlocked (x,y,z)
# else
#  define fgets_unlocked(x,y,z) fgets (x,y,z)
# endif

# if HAVE_DECL_FPUTC_UNLOCKED
#  undef fputc
#  define fputc(x,y) fputc_unlocked (x,y)
# else
#  define fputc_unlocked(x,y) fputc (x,y)
# endif

# if HAVE_DECL_FPUTS_UNLOCKED
#  undef fputs
#  define fputs(x,y) fputs_unlocked (x,y)
# else
#  define fputs_unlocked(x,y) fputs (x,y)
# endif

# if HAVE_DECL_FREAD_UNLOCKED
#  undef fread
#  define fread(w,x,y,z) fread_unlocked (w,x,y,z)
# else
#  define fread_unlocked(w,x,y,z) fread (w,x,y,z)
# endif

# if HAVE_DECL_FWRITE_UNLOCKED
#  undef fwrite
#  define fwrite(w,x,y,z) fwrite_unlocked (w,x,y,z)
# else
#  define fwrite_unlocked(w,x,y,z) fwrite (w,x,y,z)
# endif

# if HAVE_DECL_GETC_UNLOCKED
#  undef getc
#  define getc(x) getc_unlocked (x)
# else
#  define getc_unlocked(x) getc (x)
# endif

# if HAVE_DECL_GETCHAR_UNLOCKED
#  undef getchar
#  define getchar() getchar_unlocked ()
# else
#  define getchar_unlocked() getchar ()
# endif

# if HAVE_DECL_PUTC_UNLOCKED
#  undef putc
#  define putc(x,y) putc_unlocked (x,y)
# else
#  define putc_unlocked(x,y) putc (x,y)
# endif

# if HAVE_DECL_PUTCHAR_UNLOCKED
#  undef putchar
#  define putchar(x) putchar_unlocked (x)
# else
#  define putchar_unlocked(x) putchar (x)
# endif

# undef flockfile
# define flockfile(x) ((void) 0)

# undef ftrylockfile
# define ftrylockfile(x) 0

# undef funlockfile
# define funlockfile(x) ((void) 0)

#endif /* UNLOCKED_IO_H */