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, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
23 /* All Rights Reserved */
24
25
26 /*
27 * Copyright (c) 1994-2000 by Sun Microsystems, Inc.
28 * All rights reserved.
29 */
30
31 #include <sys/param.h>
32 #include <sys/types.h>
33 #include <sys/sysmacros.h>
34 #include <sys/systm.h>
35 #include <sys/user.h>
36 #include <sys/errno.h>
37 #include <sys/proc.h>
38 #include <sys/condvar.h>
39 #include <sys/debug.h>
40
41 /*
42 * Indefinite wait.
43 */
44 int
pause()45 pause()
46 {
47 mutex_enter(&curthread->t_delay_lock);
48 while (cv_wait_sig_swap(&curthread->t_delay_cv,
49 &curthread->t_delay_lock))
50 ;
51 mutex_exit(&curthread->t_delay_lock);
52 return (set_errno(EINTR));
53 }
54