c4e20cad00
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified 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.
65 lines
2.6 KiB
C
65 lines
2.6 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (C) 2001 Jason Evans <jasone@freebsd.org>. All rights reserved.
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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(s), this list of conditions and the following disclaimer as
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* the first lines of this file unmodified other than the possible
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* addition of one or more copyright notices.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice(s), 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 COPYRIGHT HOLDER(S) ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _SYS_SEMA_H_
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#define _SYS_SEMA_H_
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#include <sys/queue.h>
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#include <sys/_lock.h>
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#include <sys/_mutex.h>
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#include <sys/condvar.h>
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struct sema {
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struct mtx sema_mtx; /* General protection lock. */
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struct cv sema_cv; /* Waiters. */
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int sema_waiters; /* Number of waiters. */
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int sema_value; /* Semaphore value. */
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};
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#ifdef _KERNEL
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void sema_init(struct sema *sema, int value, const char *description);
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void sema_destroy(struct sema *sema);
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void _sema_post(struct sema *sema, const char *file, int line);
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void _sema_wait(struct sema *sema, const char *file, int line);
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int _sema_timedwait(struct sema *sema, int timo, const char *file, int
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line);
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int _sema_trywait(struct sema *sema, const char *file, int line);
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int sema_value(struct sema *sema);
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#define sema_post(sema) _sema_post((sema), LOCK_FILE, LOCK_LINE)
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#define sema_wait(sema) _sema_wait((sema), LOCK_FILE, LOCK_LINE)
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#define sema_timedwait(sema, timo) \
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_sema_timedwait((sema), (timo), LOCK_FILE, LOCK_LINE)
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#define sema_trywait(sema) _sema_trywait((sema), LOCK_FILE, LOCK_LINE)
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#endif /* _KERNEL */
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#endif /* _SYS_SEMA_H_ */
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