1 /* 2 * Copyright (c) 2019 Apple 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 [email protected] 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 76 extern uint64_t LockTimeOutTSC; /* Lock timeout in TSC ticks */ 77 extern uint32_t LockTimeOutUsec;/* Lock timeout in microseconds */ 78 extern 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 86 typedef 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 97 typedef 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; 105 106 extern void i386_lock_unlock_with_flush( 107 hw_lock_t); 108 #else 109 110 typedef 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) 119 typedef usimple_lock_data_t *simple_lock_t; 120 typedef 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