freebsd-dev/include/semaphore.h
Pedro F. Giffuni e58eb3c437 include: General further adoption of SPDX licensing ID tags.
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using mis-identified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.
2017-11-25 17:09:43 +00:00

74 lines
2.3 KiB
C

/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* 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>
#include <machine/_limits.h>
struct _sem {
__uint32_t _magic;
struct _usem2 _kern;
__uint32_t _padding; /* Preserve structure size */
};
typedef struct _sem sem_t;
#define SEM_FAILED ((sem_t *)0)
#define SEM_VALUE_MAX __INT_MAX
struct timespec;
__BEGIN_DECLS
#if __BSD_VISIBLE
int sem_clockwait_np(sem_t * __restrict, __clockid_t, int,
const struct timespec *, struct timespec *);
#endif
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_ */