xref: /illumos-gate/usr/src/head/schedctl.h (revision 0250c53ad267726f2438e3c6556199a0bbf588a2)
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 /*
23  * Copyright 2014 Garrett D'Amore <garrett@damore.org>
24  *
25  * Copyright 1996-2003 Sun Microsystems, Inc.  All rights reserved.
26  * Use is subject to license terms.
27  */
28 
29 #ifndef	_SCHEDCTL_H
30 #define	_SCHEDCTL_H
31 
32 #ifdef __cplusplus
33 extern "C" {
34 #endif
35 
36 #include <sys/schedctl.h>
37 
38 typedef sc_public_t schedctl_t;
39 
40 extern void yield(void);
41 
42 #define	schedctl_start(p)					\
43 		(void) (((p) == NULL)? 0 :			\
44 		((((schedctl_t *)(p))->sc_nopreempt = 1), 0))
45 
46 #define	schedctl_stop(p)					\
47 		(void) (((p) == NULL)? 0 :			\
48 		((((schedctl_t *)(p))->sc_nopreempt = 0),	\
49 		(((schedctl_t *)(p))->sc_yield? (yield(), 0) : 0)))
50 
51 /*
52  * libsched API
53  */
54 schedctl_t	*schedctl_init(void);
55 schedctl_t	*schedctl_lookup(void);
56 void		schedctl_exit(void);
57 
58 #ifdef __cplusplus
59 }
60 #endif
61 
62 #endif	/* _SCHEDCTL_H */
63