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Diffstat (limited to 'include/semaphore.h')
| -rw-r--r-- | include/semaphore.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/include/semaphore.h b/include/semaphore.h new file mode 100644 index 0000000..3531353 --- /dev/null +++ b/include/semaphore.h @@ -0,0 +1,64 @@ +/* + * Copyright (c) 2010 David Xu <davidxu@freebsd.org> + * + * 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 unmodified, 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. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR 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. + * + * $FreeBSD$ + */ + +/* semaphore.h: POSIX 1003.1b semaphores */ + +#ifndef _SEMAPHORE_H_ +#define _SEMAPHORE_H_ + +#include <sys/cdefs.h> +#include <sys/_types.h> +#include <sys/_umtx.h> + +struct _sem { + __uint32_t _magic; + struct _usem _kern; +}; + +typedef struct _sem sem_t; + +#define SEM_FAILED ((sem_t *)0) +#define SEM_VALUE_MAX __INT_MAX + +struct timespec; + +__BEGIN_DECLS +int sem_close(sem_t *); +int sem_destroy(sem_t *); +int sem_getvalue(sem_t * __restrict, int * __restrict); +int sem_init(sem_t *, int, unsigned int); +sem_t *sem_open(const char *, int, ...); +int sem_post(sem_t *); +int sem_timedwait(sem_t * __restrict, const struct timespec * __restrict); +int sem_trywait(sem_t *); +int sem_unlink(const char *); +int sem_wait(sem_t *); +__END_DECLS + +#endif /* !_SEMAPHORE_H_ */ |
