usr/src/lib/libc/port/sys/lwp.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 <sys/time.h>
  31 #include <errno.h>
  32 #include <synch.h>
  33 #include <sys/synch32.h>
  34 #include <sys/lwp.h>
  35
  36 int
  37 _lwp_mutex_lock(mutex_t *mp)
  38 {
  39         if (set_lock_byte(&mp->mutex_lockw) == 0)
  40                 return (0);
  41         return (___lwp_mutex_timedlock(mp, NULL, NULL));
  42 }
  43
  44 int
  45 _lwp_mutex_trylock(mutex_t *mp)
  46 {
  47         if (set_lock_byte(&mp->mutex_lockw) == 0)
  48                 return (0);
  49         return (EBUSY);
  50 }
  51
  52 int
  53 _lwp_sema_init(lwp_sema_t *sp, int count)
  54 {
  55         sp->sema_count = count;
  56         sp->sema_waiters = 0;
  57         sp->type = USYNC_PROCESS;
  58         return (0);
  59 }
  60
  61 int
  62 _lwp_sema_wait(lwp_sema_t *sp)
  63 {
  64         return (___lwp_sema_timedwait(sp, NULL, 0));
  65 }
  66
  67 int
  68 _lwp_suspend(lwpid_t lwpid)
  69 {
  70         extern int ___lwp_suspend(lwpid_t);
  71         return (___lwp_suspend(lwpid));
  72 }