63 lines
2.4 KiB
C
63 lines
2.4 KiB
C
/* $OpenBSD: semaphore.h,v 1.1 2017/10/15 23:40:33 guenther Exp $ */
|
|
|
|
/* semaphore.h: POSIX 1003.1b semaphores */
|
|
|
|
/*-
|
|
* Copyright (c) 1996, 1997
|
|
* HD Associates, Inc. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by HD Associates, Inc
|
|
* 4. Neither the name of the author nor the names of any co-contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY HD ASSOCIATES AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL HD ASSOCIATES OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef _SEMAPHORE_H_
|
|
#define _SEMAPHORE_H_
|
|
|
|
#include <sys/cdefs.h>
|
|
|
|
/* Opaque type definition. */
|
|
struct __sem;
|
|
typedef struct __sem *sem_t;
|
|
struct timespec;
|
|
|
|
#define SEM_FAILED ((sem_t *)0)
|
|
|
|
__BEGIN_DECLS
|
|
int sem_init(sem_t *, int, unsigned int);
|
|
int sem_destroy(sem_t *);
|
|
sem_t *sem_open(const char *, int, ...);
|
|
int sem_close(sem_t *);
|
|
int sem_unlink(const char *);
|
|
int sem_wait(sem_t *);
|
|
int sem_timedwait(sem_t * __restrict, const struct timespec * __restrict);
|
|
int sem_trywait(sem_t *);
|
|
int sem_post(sem_t *);
|
|
int sem_getvalue(sem_t * __restrict, int * __restrict);
|
|
__END_DECLS
|
|
|
|
#endif /* _SEMAPHORE_H_ */
|