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-rw-r--r--lib/unlocked-io.h137
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diff --git a/lib/unlocked-io.h b/lib/unlocked-io.h
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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 */