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Diffstat (limited to 'libpthread/nptl/semaphore.h')
| -rw-r--r-- | libpthread/nptl/semaphore.h | 79 | 
1 files changed, 79 insertions, 0 deletions
| diff --git a/libpthread/nptl/semaphore.h b/libpthread/nptl/semaphore.h new file mode 100644 index 000000000..4f13725b3 --- /dev/null +++ b/libpthread/nptl/semaphore.h @@ -0,0 +1,79 @@ +/* Copyright (C) 2002, 2003 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 Lesser General Public +   License as published by the Free Software Foundation; either +   version 2.1 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 +   Lesser General Public License for more details. + +   You should have received a copy of the GNU Lesser General Public +   License along with the GNU C Library; 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> +#include <sys/types.h> +#ifdef __USE_XOPEN2K +# define __need_timespec +# include <time.h> +#endif + +/* Get the definition for sem_t.  */ +#include <bits/semaphore.h> + + +__BEGIN_DECLS + +/* Initialize semaphore object SEM to VALUE.  If PSHARED then share it +   with other processes.  */ +extern int sem_init (sem_t *__sem, int __pshared, unsigned int __value) +     __THROW; +/* Free resources associated with semaphore object SEM.  */ +extern int sem_destroy (sem_t *__sem) __THROW; + +/* Open a named semaphore NAME with open flags OFLAG.  */ +extern sem_t *sem_open (__const char *__name, int __oflag, ...) __THROW; + +/* Close descriptor for named semaphore SEM.  */ +extern int sem_close (sem_t *__sem) __THROW; + +/* Remove named semaphore NAME.  */ +extern int sem_unlink (__const char *__name) __THROW; + +/* Wait for SEM being posted. + +   This function is a cancellation point and therefore not marked with +   __THROW.  */ +extern int sem_wait (sem_t *__sem); + +#ifdef __USE_XOPEN2K +/* Similar to `sem_wait' but wait only until ABSTIME. + +   This function is a cancellation point and therefore not marked with +   __THROW.  */ +extern int sem_timedwait (sem_t *__restrict __sem, +			  __const struct timespec *__restrict __abstime); +#endif + +/* Test whether SEM is posted.  */ +extern int sem_trywait (sem_t *__sem) __THROW; + +/* Post SEM.  */ +extern int sem_post (sem_t *__sem) __THROW; + +/* Get current value of SEM and store it in *SVAL.  */ +extern int sem_getvalue (sem_t *__restrict __sem, int *__restrict __sval) +     __THROW; + + +__END_DECLS + +#endif	/* semaphore.h */ | 
