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Diffstat (limited to 'include/semaphore.h')
| -rw-r--r-- | include/semaphore.h | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/include/semaphore.h b/include/semaphore.h new file mode 100644 index 00000000000..21dc1a25bed --- /dev/null +++ b/include/semaphore.h @@ -0,0 +1,62 @@ +/* $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_ */ |