usr/src/lib/libc/port/sys/lwp_cond.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #include "lint.h"
  28 #include "thr_uberdata.h"
  29 #include <sys/types.h>
  30 #include <time.h>
  31 #include <errno.h>
  32 #include <synch.h>
  33 #include <sys/synch32.h>
  34 #include <pthread.h>
  35
  36 int
  37 _lwp_cond_wait(cond_t *cv, mutex_t *mp)
  38 {
  39         int error;
  40
  41         error = ___lwp_cond_wait(cv, mp, NULL, 0);
  42         if (mp->mutex_type & (PTHREAD_PRIO_INHERIT|PTHREAD_PRIO_PROTECT))
  43                 (void) ___lwp_mutex_timedlock(mp, NULL, NULL);
  44         else
  45                 (void) _lwp_mutex_lock(mp);
  46         return (error);
  47 }
  48
  49 int
  50 _lwp_cond_reltimedwait(cond_t *cv, mutex_t *mp, timespec_t *relts)
  51 {
  52         int error;
  53
  54         if (relts != NULL &&
  55             (relts->tv_sec < 0 || (ulong_t)relts->tv_nsec >= NANOSEC))
  56                 return (EINVAL);
  57         error = ___lwp_cond_wait(cv, mp, relts, 0);
  58         if (mp->mutex_type & (PTHREAD_PRIO_INHERIT|PTHREAD_PRIO_PROTECT))
  59                 (void) ___lwp_mutex_timedlock(mp, NULL, NULL);
  60         else
  61                 (void) _lwp_mutex_lock(mp);
  62         return (error);
  63 }
  64
  65 int
  66 _lwp_cond_timedwait(cond_t *cv, mutex_t *mp, timespec_t *absts)
  67 {
  68         extern void abstime_to_reltime(clockid_t,
  69             const timespec_t *, timespec_t *);
  70         timespec_t tslocal;
  71
  72         abstime_to_reltime(CLOCK_REALTIME, absts, &tslocal);
  73         return (_lwp_cond_reltimedwait(cv, mp, &tslocal));
  74 }