Update i686 multiarch functions for <cpu-features.h>
[glibc.git] / nptl / semaphoreP.h
blobb9d6bd995f0cb68e2bc167fb3ccf90196218486f
1 /* Copyright (C) 2002-2015 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
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.
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.
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 <http://www.gnu.org/licenses/>. */
19 #include <semaphore.h>
20 #include "pthreadP.h"
22 #define SEM_SHM_PREFIX "sem."
24 /* Keeping track of currently used mappings. */
25 struct inuse_sem
27 dev_t dev;
28 ino_t ino;
29 int refcnt;
30 sem_t *sem;
31 char name[0];
35 /* The search tree for existing mappings. */
36 extern void *__sem_mappings attribute_hidden;
38 /* Lock to protect the search tree. */
39 extern int __sem_mappings_lock attribute_hidden;
42 /* Comparison function for search in tree with existing mappings. */
43 extern int __sem_search (const void *a, const void *b) attribute_hidden;
46 /* Prototypes of functions with multiple interfaces. */
47 extern int __new_sem_init (sem_t *sem, int pshared, unsigned int value);
48 extern int __old_sem_init (sem_t *sem, int pshared, unsigned int value);
49 extern int __new_sem_destroy (sem_t *sem);
50 extern int __new_sem_post (sem_t *sem);
51 extern int __new_sem_wait (sem_t *sem);
52 extern int __old_sem_wait (sem_t *sem);
53 extern int __new_sem_trywait (sem_t *sem);
54 extern int __new_sem_getvalue (sem_t *sem, int *sval);