119 lines
2.8 KiB
C
119 lines
2.8 KiB
C
/* $NetBSD: cnd.c,v 1.1 2019/04/24 11:43:19 kamil Exp $ */
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/*-
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* Copyright (c) 2016 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 Kamil Rytarowski.
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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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#include <sys/cdefs.h>
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__RCSID("$NetBSD: cnd.c,v 1.1 2019/04/24 11:43:19 kamil Exp $");
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#include <assert.h>
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#include <errno.h>
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#include <pthread.h>
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#include <threads.h>
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int
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cnd_broadcast(cnd_t *cond)
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{
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_DIAGASSERT(cond != NULL);
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if (pthread_cond_broadcast(cond) == 0)
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return thrd_success;
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return thrd_error;
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}
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void
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cnd_destroy(cnd_t *cond)
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{
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_DIAGASSERT(cond != NULL);
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/*
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* The cnd_destroy(3) function that conforms to C11 returns no value.
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*/
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(void)pthread_cond_destroy(cond);
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}
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int
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cnd_init(cnd_t *cond)
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{
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_DIAGASSERT(cond != NULL);
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if (pthread_cond_init(cond, NULL) == 0)
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return thrd_success;
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return thrd_error;
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}
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int
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cnd_signal(cnd_t *cond)
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{
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_DIAGASSERT(cond != NULL);
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if (pthread_cond_signal(cond) == 0)
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return thrd_success;
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return thrd_error;
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}
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int
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cnd_timedwait(cnd_t * __restrict cond, mtx_t * __restrict mtx,
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const struct timespec * __restrict ts)
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{
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_DIAGASSERT(cond != NULL);
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_DIAGASSERT(mtx != NULL);
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_DIAGASSERT(ts != NULL);
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switch (pthread_cond_timedwait(cond, mtx, ts)) {
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case 0:
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return thrd_success;
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case ETIMEDOUT:
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return thrd_timedout;
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default:
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return thrd_error;
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}
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}
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int
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cnd_wait(cnd_t *cond, mtx_t *mtx)
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{
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_DIAGASSERT(cond != NULL);
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_DIAGASSERT(mtx != NULL);
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if (pthread_cond_wait(cond, mtx) == 0)
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return thrd_success;
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return thrd_error;
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}
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