xref: /titanic_41/usr/src/lib/libc/port/sys/lwp.c (revision db94676fbd90b0affb8474a2af4e10718ba3136d)
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
_lwp_mutex_lock(mutex_t * mp)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
_lwp_mutex_trylock(mutex_t * mp)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
_lwp_sema_init(lwp_sema_t * sp,int count)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
_lwp_sema_wait(lwp_sema_t * sp)62 _lwp_sema_wait(lwp_sema_t *sp)
63 {
64 	return (___lwp_sema_timedwait(sp, NULL, 0));
65 }
66 
67 int
_lwp_suspend(lwpid_t lwpid)68 _lwp_suspend(lwpid_t lwpid)
69 {
70 	extern int ___lwp_suspend(lwpid_t);
71 	return (___lwp_suspend(lwpid));
72 }
73