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* Copyright (c) 2019 Apple Inc. All rights reserved.
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* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
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* This file contains Original Code and/or Modifications of Original Code
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* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
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/*
* @OSF_COPYRIGHT@
*/
/*
* Mach Operating System
* Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
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*
* any improvements or extensions that they make and grant Carnegie Mellon
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*/
/*
* File: kern/simple_lock_types.h
* Author: Avadis Tevanian, Jr., Michael Wayne Young
* Date: 1985
*
* Simple lock data type definitions
*/
#ifdef KERNEL_PRIVATE
#ifndef _I386_SIMPLE_LOCK_TYPES_H_
#define _I386_SIMPLE_LOCK_TYPES_H_
#include <mach/boolean.h>
#include <kern/lock_types.h>
#include <sys/appleapiopts.h>
#if defined(MACH_KERNEL_PRIVATE) && defined(__APPLE_API_PRIVATE)
#include <mach_ldebug.h>
extern uint64_t LockTimeOutTSC; /* Lock timeout in TSC ticks */
extern uint32_t LockTimeOutUsec;/* Lock timeout in microseconds */
extern uint64_t LockTimeOut; /* Lock timeout in absolute time */
#if MACH_LDEBUG
#define USLOCK_DEBUG 1
#else
#define USLOCK_DEBUG 0
#endif /* USLOCK_DEBUG */
typedef struct uslock_debug {
void *lock_pc; /* pc where lock operation began */
void *lock_thread; /* thread that acquired lock */
void *unlock_thread; /* last thread to release lock */
void *unlock_pc; /* pc where lock operation ended */
unsigned long duration[2];
unsigned short state;
unsigned char lock_cpu;
unsigned char unlock_cpu;
} uslock_debug;
typedef struct slock {
hw_lock_data_t interlock; /* must be first... see lock.c */
#if USLOCK_DEBUG
unsigned short lock_type; /* must be second... see lock.c */
#define USLOCK_TAG 0x5353
uslock_debug debug;
#endif
} usimple_lock_data_t, *usimple_lock_t;
extern void i386_lock_unlock_with_flush(
hw_lock_t);
#else
typedef struct slock {
unsigned long lock_data[10];
} usimple_lock_data_t, *usimple_lock_t;
#endif /* defined(MACH_KERNEL_PRIVATE) && defined(__APPLE_API_PRIVATE) */
#define USIMPLE_LOCK_NULL ((usimple_lock_t) 0)
#if !defined(decl_simple_lock_data)
typedef usimple_lock_data_t *simple_lock_t;
typedef usimple_lock_data_t simple_lock_data_t;
#define decl_simple_lock_data(class, name) \
class simple_lock_data_t name
#endif /* !defined(decl_simple_lock_data) */
#endif /* !_I386_SIMPLE_LOCK_TYPES_H_ */
#endif /* KERNEL_PRIVATE */