1 /* lockfile - Handle locking and unlocking of stream.
2 Copyright (C) 1996, 1998, 2000 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 License as
7 published by the Free Software Foundation; either version 2.1 of the
8 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; see the file COPYING.LIB. If
17 not, see <http://www.gnu.org/licenses/>. */
18
19 #include <stdio.h>
20 #include <pthread.h>
21
22 extern __typeof(pthread_mutexattr_init) __pthread_mutexattr_init attribute_hidden;
23 extern __typeof(pthread_mutexattr_settype) __pthread_mutexattr_settype attribute_hidden;
24 extern __typeof(pthread_mutexattr_destroy) __pthread_mutexattr_destroy attribute_hidden;
25
26 /* Note: glibc puts flockfile, funlockfile, and ftrylockfile in both
27 * libc and libpthread. In uClibc, they are now in libc only. */
28
29 void __fresetlockfiles (void);
__fresetlockfiles(void)30 void __fresetlockfiles (void)
31 {
32 FILE *fp;
33 pthread_mutexattr_t attr;
34
35 __pthread_mutexattr_init(&attr);
36 __pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE_NP);
37
38 for (fp = _stdio_openlist; fp != NULL; fp = fp->__nextopen)
39 __pthread_mutex_init(&fp->__lock, &attr);
40
41 __pthread_mutexattr_destroy(&attr);
42 }
43