xref: /illumos-gate/usr/src/uts/sparc/sys/synch32.h (revision 32991bedc3a6475f1401855c2318ae5b15f8a16b)
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 #ifdef	__cplusplus
31 extern "C" {
32 #endif
33 
34 /* special defines for LWP mutexes */
35 #define	mutex_flag		flags.flag1
36 #define	mutex_ceiling		flags.ceiling
37 #define	mutex_type		flags.mbcp_type_un.mtype_rcount.count_type2
38 #define	mutex_rcount		flags.mbcp_type_un.mtype_rcount.count_type1
39 #define	mutex_magic		flags.magic
40 #define	mutex_owner		data
41 /* used to atomically operate on whole word via cas or swap instruction */
42 #define	mutex_lockword		lock.lock32.lockword
43 /* this requires atomic_cas_64 */
44 #define	mutex_lockword64	lock.owner64
45 /* these are bytes */
46 #define	mutex_lockw		lock.lock64.pad[4]
47 #define	mutex_waiters		lock.lock64.pad[7]
48 #define	mutex_spinners		lock.lock64.pad[5]
49 
50 /* process-shared lock owner pid */
51 #define	mutex_ownerpid		lock.lock32.ownerpid
52 
53 /* Max. recusrion count for recursive mutexes */
54 #define	RECURSION_MAX		255
55 
56 /* special defines for LWP condition variables */
57 #define	cond_type		flags.type
58 #define	cond_magic		flags.magic
59 #define	cond_clockid		flags.flag[1]
60 #define	cond_waiters_user	flags.flag[2]
61 #define	cond_waiters_kernel	flags.flag[3]
62 
63 /* special defines for LWP semaphores */
64 #define	sema_count		count
65 #define	sema_type		type
66 #define	sema_waiters		flags[7]
67 
68 /* special defines for LWP rwlocks */
69 #define	rwlock_readers		readers
70 #define	rwlock_type		type
71 #define	rwlock_magic		magic
72 #define	rwlock_owner		readercv.data
73 #define	rwlock_ownerpid		writercv.data
74 
75 #define	URW_HAS_WAITERS		0x80000000
76 #define	URW_WRITE_LOCKED	0x40000000
77 #define	URW_READERS_MASK	0x3fffffff
78 
79 #ifdef	__cplusplus
80 }
81 #endif
82 
83 #endif /* _SYS_SYNCH32_H */
84