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e7a856d954
Sponsored-by: https://despairlabs.com/sponsor/ Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Rob Norris <robn@despairlabs.com> Closes #17861
154 lines
3.3 KiB
C
154 lines
3.3 KiB
C
// SPDX-License-Identifier: CDDL-1.0
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/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or https://opensource.org/licenses/CDDL-1.0.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
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* Copyright (c) 2012, 2018 by Delphix. All rights reserved.
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* Copyright (c) 2016 Actifio, Inc. All rights reserved.
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* Copyright (c) 2025, Klara, Inc.
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*/
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#include <assert.h>
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#include <pthread.h>
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#include <errno.h>
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#include <string.h>
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#include <sys/timer.h>
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#include <sys/condvar.h>
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/*
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* =========================================================================
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* condition variables
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* =========================================================================
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*/
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void
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cv_init(kcondvar_t *cv, char *name, int type, void *arg)
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{
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(void) name, (void) type, (void) arg;
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VERIFY0(pthread_cond_init(cv, NULL));
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}
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void
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cv_destroy(kcondvar_t *cv)
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{
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VERIFY0(pthread_cond_destroy(cv));
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}
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void
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cv_wait(kcondvar_t *cv, kmutex_t *mp)
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{
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memset(&mp->m_owner, 0, sizeof (pthread_t));
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VERIFY0(pthread_cond_wait(cv, &mp->m_lock));
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mp->m_owner = pthread_self();
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}
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int
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cv_wait_sig(kcondvar_t *cv, kmutex_t *mp)
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{
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cv_wait(cv, mp);
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return (1);
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}
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int
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cv_timedwait(kcondvar_t *cv, kmutex_t *mp, clock_t abstime)
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{
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int error;
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struct timeval tv;
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struct timespec ts;
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clock_t delta;
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delta = abstime - ddi_get_lbolt();
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if (delta <= 0)
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return (-1);
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VERIFY0(gettimeofday(&tv, NULL));
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ts.tv_sec = tv.tv_sec + delta / hz;
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ts.tv_nsec = tv.tv_usec * NSEC_PER_USEC + (delta % hz) * (NANOSEC / hz);
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if (ts.tv_nsec >= NANOSEC) {
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ts.tv_sec++;
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ts.tv_nsec -= NANOSEC;
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}
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memset(&mp->m_owner, 0, sizeof (pthread_t));
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error = pthread_cond_timedwait(cv, &mp->m_lock, &ts);
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mp->m_owner = pthread_self();
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if (error == ETIMEDOUT)
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return (-1);
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VERIFY0(error);
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return (1);
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}
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int
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cv_timedwait_hires(kcondvar_t *cv, kmutex_t *mp, hrtime_t tim, hrtime_t res,
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int flag)
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{
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(void) res;
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int error;
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struct timeval tv;
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struct timespec ts;
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hrtime_t delta;
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ASSERT(flag == 0 || flag == CALLOUT_FLAG_ABSOLUTE);
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delta = tim;
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if (flag & CALLOUT_FLAG_ABSOLUTE)
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delta -= gethrtime();
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if (delta <= 0)
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return (-1);
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VERIFY0(gettimeofday(&tv, NULL));
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ts.tv_sec = tv.tv_sec + delta / NANOSEC;
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ts.tv_nsec = tv.tv_usec * NSEC_PER_USEC + (delta % NANOSEC);
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if (ts.tv_nsec >= NANOSEC) {
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ts.tv_sec++;
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ts.tv_nsec -= NANOSEC;
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}
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memset(&mp->m_owner, 0, sizeof (pthread_t));
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error = pthread_cond_timedwait(cv, &mp->m_lock, &ts);
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mp->m_owner = pthread_self();
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if (error == ETIMEDOUT)
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return (-1);
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VERIFY0(error);
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return (1);
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}
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void
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cv_signal(kcondvar_t *cv)
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{
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VERIFY0(pthread_cond_signal(cv));
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}
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void
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cv_broadcast(kcondvar_t *cv)
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{
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VERIFY0(pthread_cond_broadcast(cv));
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}
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