1/*
2 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28/*
29 * @OSF_COPYRIGHT@
30 */
31/*
32 * Mach Operating System
33 * Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University
34 * All Rights Reserved.
35 *
36 * Permission to use, copy, modify and distribute this software and its
37 * documentation is hereby granted, provided that both the copyright
38 * notice and this permission notice appear in all copies of the
39 * software, derivative works or modified versions, and any portions
40 * thereof, and that both notices appear in supporting documentation.
41 *
42 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
43 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
44 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
45 *
46 * Carnegie Mellon requests users of this software to return to
47 *
48 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
49 * School of Computer Science
50 * Carnegie Mellon University
51 * Pittsburgh PA 15213-3890
52 *
53 * any improvements or extensions that they make and grant Carnegie Mellon
54 * the rights to redistribute these changes.
55 */
56/*
57 * File: kern/simple_lock_types.h
58 * Author: Avadis Tevanian, Jr., Michael Wayne Young
59 * Date: 1985
60 *
61 * Simple lock data type definitions
62 */
63#ifdef KERNEL_PRIVATE
64
65#ifndef _I386_SIMPLE_LOCK_TYPES_H_
66#define _I386_SIMPLE_LOCK_TYPES_H_
67
68#include <mach/boolean.h>
69#include <kern/kern_types.h>
70
71#include <sys/appleapiopts.h>
72#if defined(MACH_KERNEL_PRIVATE) && defined(__APPLE_API_PRIVATE)
73#include <i386/hw_lock_types.h>
74#include <mach_ldebug.h>
75
76extern uint64_t LockTimeOutTSC; /* Lock timeout in TSC ticks */
77extern uint32_t LockTimeOutUsec;/* Lock timeout in microseconds */
78extern uint64_t LockTimeOut; /* Lock timeout in absolute time */
79
80#if MACH_LDEBUG
81#define USLOCK_DEBUG 1
82#else
83#define USLOCK_DEBUG 0
84#endif /* USLOCK_DEBUG */
85
86typedef struct uslock_debug {
87 void *lock_pc; /* pc where lock operation began */
88 void *lock_thread; /* thread that acquired lock */
89 void *unlock_thread; /* last thread to release lock */
90 void *unlock_pc; /* pc where lock operation ended */
91 unsigned long duration[2];
92 unsigned short state;
93 unsigned char lock_cpu;
94 unsigned char unlock_cpu;
95} uslock_debug;
96
97typedef struct slock {
98 hw_lock_data_t interlock; /* must be first... see lock.c */
99#if USLOCK_DEBUG
100 unsigned short lock_type; /* must be second... see lock.c */
101#define USLOCK_TAG 0x5353
102 uslock_debug debug;
103#endif
104} usimple_lock_data_t, *usimple_lock_t;
105
106extern void i386_lock_unlock_with_flush(
107 hw_lock_t);
108#else
109
110typedef struct slock {
111 unsigned long lock_data[10];
112} usimple_lock_data_t, *usimple_lock_t;
113
114#endif /* defined(MACH_KERNEL_PRIVATE) && defined(__APPLE_API_PRIVATE) */
115
116#define USIMPLE_LOCK_NULL ((usimple_lock_t) 0)
117
118#if !defined(decl_simple_lock_data)
119typedef usimple_lock_data_t *simple_lock_t;
120typedef usimple_lock_data_t simple_lock_data_t;
121
122#define decl_simple_lock_data(class,name) \
123 class simple_lock_data_t name;
124
125#endif /* !defined(decl_simple_lock_data) */
126
127#endif /* !_I386_SIMPLE_LOCK_TYPES_H_ */
128
129#endif /* KERNEL_PRIVATE */
130