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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 (the "License").
      6  * You may not use this file except in compliance with the License.
      7  *
      8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
      9  * or http://www.opensolaris.org/os/licensing.
     10  * See the License for the specific language governing permissions
     11  * and limitations under the License.
     12  *
     13  * When distributing Covered Code, include this CDDL HEADER in each
     14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     15  * If applicable, add the following below this CDDL HEADER, with the
     16  * fields enclosed by brackets "[]" replaced with your own identifying
     17  * information: Portions Copyright [yyyy] [name of copyright owner]
     18  *
     19  * CDDL HEADER END
     20  */
     21 
     22 /*
     23  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
     24  * Use is subject to license terms.
     25  */
     26 
     27 #ifndef _SYS_SYNCH32_H
     28 #define	_SYS_SYNCH32_H
     29 
     30 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     31 
     32 #ifdef	__cplusplus
     33 extern "C" {
     34 #endif
     35 
     36 /* special defines for LWP mutexes */
     37 #define	mutex_flag		flags.flag1
     38 #define	mutex_ceiling		flags.ceiling
     39 #define	mutex_type		flags.mbcp_type_un.mtype_rcount.count_type1
     40 #define	mutex_rcount		flags.mbcp_type_un.mtype_rcount.count_type2
     41 #define	mutex_magic		flags.magic
     42 #define	mutex_owner		data
     43 /* used to atomically operate on whole word via cas or swap instruction */
     44 #define	mutex_lockword		lock.lock32.lockword
     45 /* this requires cas64 */
     46 #define	mutex_lockword64	lock.owner64
     47 /* these are bytes */
     48 #define	mutex_lockw		lock.lock64.pad[7]
     49 #define	mutex_waiters		lock.lock64.pad[6]
     50 #define	mutex_spinners		lock.lock64.pad[5]
     51 
     52 /* process-shared lock owner pid */
     53 #define	mutex_ownerpid		lock.lock32.ownerpid
     54 
     55 /* Max. recusrion count for recursive mutexes */
     56 #define	RECURSION_MAX		255
     57 
     58 /* special defines for LWP condition variables */
     59 #define	cond_type		flags.type
     60 #define	cond_magic		flags.magic
     61 #define	cond_clockid		flags.flag[1]
     62 #define	cond_waiters_user	flags.flag[2]
     63 #define	cond_waiters_kernel	flags.flag[3]
     64 
     65 /* special defines for LWP semaphores */
     66 #define	sema_count		count
     67 #define	sema_type		type
     68 #define	sema_waiters		flags[7]
     69 
     70 /* special defines for LWP rwlocks */
     71 #define	rwlock_readers		readers
     72 #define	rwlock_type		type
     73 #define	rwlock_magic		magic
     74 #define	rwlock_owner		readercv.data
     75 #define	rwlock_ownerpid		writercv.data
     76 
     77 #define	URW_HAS_WAITERS		0x80000000
     78 #define	URW_WRITE_LOCKED	0x40000000
     79 #define	URW_READERS_MASK	0x3fffffff
     80 
     81 #ifdef	__cplusplus
     82 }
     83 #endif
     84 
     85 #endif /* _SYS_SYNCH32_H */
     86