58 lines
2.1 KiB
C
58 lines
2.1 KiB
C
/* $NetBSD: semaphore.h,v 1.3 2008/04/28 20:22:54 martin Exp $ */
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/*-
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* Copyright (c) 2003 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Christos Zoulas.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _SEMAPHORE_H_
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#define _SEMAPHORE_H_
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/* POSIX 1003.1b semaphores */
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struct _sem_st;
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typedef struct _sem_st *sem_t;
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#define SEM_FAILED ((sem_t *)0)
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#define SEM_VALUE_MAX (~0U)
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#include <sys/cdefs.h>
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__BEGIN_DECLS
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int sem_close(sem_t *);
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int sem_destroy(sem_t *);
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int sem_getvalue(sem_t * __restrict, int * __restrict);
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int sem_init(sem_t *, int, unsigned int);
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int sem_post(sem_t *);
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int sem_trywait(sem_t *);
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int sem_unlink(const char *);
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int sem_wait(sem_t *);
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sem_t *sem_open(const char *, int, ...);
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__END_DECLS
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#endif /* !_SEMAPHORE_H_ */
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