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author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2012-02-19 05:50:33 +0100 |
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committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2012-02-19 05:50:33 +0100 |
commit | 6b2e5e0d91823c2a6ce5a5cb12ae3d00b82adae7 (patch) | |
tree | 30abf5fa5e54f2a079e53228083cf4d230efc102 /libpthread/include/semaphore.h | |
parent | 93ba48b6534f44c41f5739505dc9943d760a1867 (diff) | |
parent | f115339ad63bfb0005bc3d1ebfb05e1a0aecc0db (diff) |
Merge branch 'upstream-merged' of git.debian.org:/git/pkg-hurd/hurd into upstream-merged
Diffstat (limited to 'libpthread/include/semaphore.h')
-rw-r--r-- | libpthread/include/semaphore.h | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/libpthread/include/semaphore.h b/libpthread/include/semaphore.h new file mode 100644 index 00000000..657e796e --- /dev/null +++ b/libpthread/include/semaphore.h @@ -0,0 +1,69 @@ +/* Copyright (C) 2005, 2007 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#ifndef _SEMAPHORE_H +#define _SEMAPHORE_H 1 + +#include <features.h> + +__BEGIN_DECLS + +#include <bits/semaphore.h> + +#define SEM_FAILED ((void *) 0) + +typedef struct __semaphore sem_t; + +/* Initialize semaphore *SEM with value VALUE. */ +extern int sem_init (sem_t *sem, int pshared, unsigned value); + +/* Destroy semaphore *SEM created with sem_init. */ +extern int sem_destroy (sem_t *sem); + +/* Store the value of semaphore *SEM in *VALUE. */ +extern int sem_getvalue (sem_t *__restrict sem, int *__restrict value); + +/* Perform a down operation on semaphore *SEM. */ +extern int sem_wait (sem_t *sem); + +/* Perform a down operation on semaphore *SEM if it can be done so + without blocking. */ +extern int sem_trywait (sem_t *sem); + +#ifdef __USE_XOPEN2K +/* Perform a down operation on semaphore *SEM but don't wait longer + than TIMEOUT. */ +extern int sem_timedwait (sem_t *__restrict sem, + const struct timespec *__restrict timeout); +#endif + +/* Perform an up operation on semaphore *SEM. */ +extern int sem_post (sem_t *sem); + +/* Open a named semaphore. */ +extern sem_t *sem_open (const char *name, int open_flags, ...); + +/* Close a semaphore returned by sem_open. */ +extern int sem_close (sem_t *sem); + +/* Unlink a named semaphore. */ +extern int sem_unlink (const char *name); + +__END_DECLS + +#endif /* semaphore.h */ |