1 | /* lockfile - Handle locking and unlocking of streams. Hurd pthread version. |
2 | Copyright (C) 2000-2022 Free Software Foundation, Inc. |
3 | This file is part of the GNU C Library. |
4 | |
5 | The GNU C Library is free software; you can redistribute it and/or |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either |
8 | version 2.1 of the License, or (at your option) any later version. |
9 | |
10 | The GNU C Library 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 GNU |
13 | Lesser General Public License for more details. |
14 | |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with the GNU C Library; if not, see |
17 | <https://www.gnu.org/licenses/>. */ |
18 | |
19 | #include <pthread.h> /* Must come before <stdio.h>! */ |
20 | #include <stdio.h> |
21 | |
22 | void |
23 | _cthreads_flockfile (FILE *fp) |
24 | { |
25 | _IO_lock_lock (*fp->_lock); |
26 | } |
27 | |
28 | void |
29 | _cthreads_funlockfile (FILE *fp) |
30 | { |
31 | _IO_lock_unlock (*fp->_lock); |
32 | } |
33 | |
34 | int |
35 | _cthreads_ftrylockfile (FILE *fp) |
36 | { |
37 | return __libc_lock_trylock_recursive (*fp->_lock); |
38 | } |
39 | |
40 | #undef _IO_flockfile |
41 | #undef _IO_funlockfile |
42 | #undef _IO_ftrylockfile |
43 | #undef flockfile |
44 | #undef funlockfile |
45 | #undef ftrylockfile |
46 | |
47 | void _IO_flockfile (FILE *) |
48 | __attribute__ ((alias ("_cthreads_flockfile" ))); |
49 | void _IO_funlockfile (FILE *) |
50 | __attribute__ ((alias ("_cthreads_funlockfile" ))); |
51 | int _IO_ftrylockfile (FILE *) |
52 | __attribute__ ((alias ("_cthreads_ftrylockfile" ))); |
53 | |
54 | void flockfile (FILE *) |
55 | __attribute__ ((weak, alias ("_cthreads_flockfile" ))); |
56 | void funlockfile (FILE *) |
57 | __attribute__ ((weak, alias ("_cthreads_funlockfile" ))); |
58 | int ftrylockfile (FILE *) |
59 | __attribute__ ((weak, alias ("_cthreads_ftrylockfile" ))); |
60 | |