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      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 2004 Sun Microsystems, Inc.  All rights reserved.
     24  * Use is subject to license terms.
     25  */
     26 
     27 #ifndef	_SYS_SOBJECT_H
     28 #define	_SYS_SOBJECT_H
     29 
     30 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     31 
     32 #include <sys/types.h>
     33 #include <sys/thread.h>
     34 
     35 #ifdef	__cplusplus
     36 extern "C" {
     37 #endif
     38 
     39 /*
     40  * Type-number definitions for the various synchronization
     41  * objects defined for the system. The numeric values
     42  * assigned to the various definitions begin with zero, since
     43  * the synch-object mapping array depends on these values.
     44  */
     45 #define	SOBJ_NONE	0	/* undefined synchonization object */
     46 #define	SOBJ_MUTEX	1	/* mutex synchonization object */
     47 #define	SOBJ_RWLOCK	2	/* readers/writer synchonization object */
     48 #define	SOBJ_CV		3	/* cond. variable synchonization object */
     49 #define	SOBJ_SEMA	4	/* semaphore synchonization object */
     50 #define	SOBJ_USER	5	/* user-level synchronization object */
     51 #define	SOBJ_USER_PI	6	/* user-level sobj having Prio Inheritance */
     52 #define	SOBJ_SHUTTLE 	7	/* shuttle synchronization object */
     53 
     54 /*
     55  * The following data structure is used to map
     56  * synchronization object type numbers to the
     57  * synchronization object's sleep queue number
     58  * or the synch. object's owner function.
     59  */
     60 typedef struct _sobj_ops {
     61 	int		sobj_type;
     62 	kthread_t	*(*sobj_owner)();
     63 	void		(*sobj_unsleep)(kthread_t *);
     64 	void		(*sobj_change_pri)(kthread_t *, pri_t, pri_t *);
     65 } sobj_ops_t;
     66 
     67 #ifdef	_KERNEL
     68 
     69 #define	SOBJ_TYPE(sobj_ops)		sobj_ops->sobj_type
     70 #define	SOBJ_OWNER(sobj_ops, sobj)	(*(sobj_ops->sobj_owner))(sobj)
     71 #define	SOBJ_UNSLEEP(sobj_ops, t)	(*(sobj_ops->sobj_unsleep))(t)
     72 #define	SOBJ_CHANGE_PRI(sobj_ops, t, pri)	\
     73 			(*(sobj_ops->sobj_change_pri))(t, pri, &t->t_pri)
     74 #define	SOBJ_CHANGE_EPRI(sobj_ops, t, pri)	\
     75 			(*(sobj_ops->sobj_change_pri))(t, pri, &t->t_epri)
     76 
     77 #endif	/* _KERNEL */
     78 
     79 #ifdef	__cplusplus
     80 }
     81 #endif
     82 
     83 #endif	/* _SYS_SOBJECT_H */
     84