xref: /onnv-gate/usr/src/uts/common/sys/sobject.h (revision 0:68f95e015346)
1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate  * CDDL HEADER START
3*0Sstevel@tonic-gate  *
4*0Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
7*0Sstevel@tonic-gate  * with the License.
8*0Sstevel@tonic-gate  *
9*0Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate  * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate  * and limitations under the License.
13*0Sstevel@tonic-gate  *
14*0Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate  *
20*0Sstevel@tonic-gate  * CDDL HEADER END
21*0Sstevel@tonic-gate  */
22*0Sstevel@tonic-gate /*
23*0Sstevel@tonic-gate  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
24*0Sstevel@tonic-gate  * Use is subject to license terms.
25*0Sstevel@tonic-gate  */
26*0Sstevel@tonic-gate 
27*0Sstevel@tonic-gate #ifndef	_SYS_SOBJECT_H
28*0Sstevel@tonic-gate #define	_SYS_SOBJECT_H
29*0Sstevel@tonic-gate 
30*0Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
31*0Sstevel@tonic-gate 
32*0Sstevel@tonic-gate #include <sys/types.h>
33*0Sstevel@tonic-gate #include <sys/thread.h>
34*0Sstevel@tonic-gate 
35*0Sstevel@tonic-gate #ifdef	__cplusplus
36*0Sstevel@tonic-gate extern "C" {
37*0Sstevel@tonic-gate #endif
38*0Sstevel@tonic-gate 
39*0Sstevel@tonic-gate /*
40*0Sstevel@tonic-gate  * Type-number definitions for the various synchronization
41*0Sstevel@tonic-gate  * objects defined for the system. The numeric values
42*0Sstevel@tonic-gate  * assigned to the various definitions begin with zero, since
43*0Sstevel@tonic-gate  * the synch-object mapping array depends on these values.
44*0Sstevel@tonic-gate  */
45*0Sstevel@tonic-gate #define	SOBJ_NONE	0	/* undefined synchonization object */
46*0Sstevel@tonic-gate #define	SOBJ_MUTEX	1	/* mutex synchonization object */
47*0Sstevel@tonic-gate #define	SOBJ_RWLOCK	2	/* readers/writer synchonization object */
48*0Sstevel@tonic-gate #define	SOBJ_CV		3	/* cond. variable synchonization object */
49*0Sstevel@tonic-gate #define	SOBJ_SEMA	4	/* semaphore synchonization object */
50*0Sstevel@tonic-gate #define	SOBJ_USER	5	/* user-level synchronization object */
51*0Sstevel@tonic-gate #define	SOBJ_USER_PI	6	/* user-level sobj having Prio Inheritance */
52*0Sstevel@tonic-gate #define	SOBJ_SHUTTLE 	7	/* shuttle synchronization object */
53*0Sstevel@tonic-gate 
54*0Sstevel@tonic-gate /*
55*0Sstevel@tonic-gate  * The following data structure is used to map
56*0Sstevel@tonic-gate  * synchronization object type numbers to the
57*0Sstevel@tonic-gate  * synchronization object's sleep queue number
58*0Sstevel@tonic-gate  * or the synch. object's owner function.
59*0Sstevel@tonic-gate  */
60*0Sstevel@tonic-gate typedef struct _sobj_ops {
61*0Sstevel@tonic-gate 	int		sobj_type;
62*0Sstevel@tonic-gate 	kthread_t	*(*sobj_owner)();
63*0Sstevel@tonic-gate 	void		(*sobj_unsleep)(kthread_t *);
64*0Sstevel@tonic-gate 	void		(*sobj_change_pri)(kthread_t *, pri_t, pri_t *);
65*0Sstevel@tonic-gate } sobj_ops_t;
66*0Sstevel@tonic-gate 
67*0Sstevel@tonic-gate #ifdef	_KERNEL
68*0Sstevel@tonic-gate 
69*0Sstevel@tonic-gate #define	SOBJ_TYPE(sobj_ops)		sobj_ops->sobj_type
70*0Sstevel@tonic-gate #define	SOBJ_OWNER(sobj_ops, sobj)	(*(sobj_ops->sobj_owner))(sobj)
71*0Sstevel@tonic-gate #define	SOBJ_UNSLEEP(sobj_ops, t)	(*(sobj_ops->sobj_unsleep))(t)
72*0Sstevel@tonic-gate #define	SOBJ_CHANGE_PRI(sobj_ops, t, pri)	\
73*0Sstevel@tonic-gate 			(*(sobj_ops->sobj_change_pri))(t, pri, &t->t_pri)
74*0Sstevel@tonic-gate #define	SOBJ_CHANGE_EPRI(sobj_ops, t, pri)	\
75*0Sstevel@tonic-gate 			(*(sobj_ops->sobj_change_pri))(t, pri, &t->t_epri)
76*0Sstevel@tonic-gate 
77*0Sstevel@tonic-gate #endif	/* _KERNEL */
78*0Sstevel@tonic-gate 
79*0Sstevel@tonic-gate #ifdef	__cplusplus
80*0Sstevel@tonic-gate }
81*0Sstevel@tonic-gate #endif
82*0Sstevel@tonic-gate 
83*0Sstevel@tonic-gate #endif	/* _SYS_SOBJECT_H */
84