include/sys/sobject.h

   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 */