osfmk/ppc/lock.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * Copyright (C) 1998 Apple Computer
  24  * All Rights Reserved
  25  */
  26 /*
  27  * @OSF_COPYRIGHT@
  28  */
  29
  30 /*
  31  * Mach Operating System
  32  * Copyright (c) 1991,1990 Carnegie Mellon University
  33  * All Rights Reserved.
  34  *
  35  * Permission to use, copy, modify and distribute this software and its
  36  * documentation is hereby granted, provided that both the copyright
  37  * notice and this permission notice appear in all copies of the
  38  * software, derivative works or modified versions, and any portions
  39  * thereof, and that both notices appear in supporting documentation.
  40  *
  41  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  42  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  43  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  44  *
  45  * Carnegie Mellon requests users of this software to return to
  46  *
  47  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  48  *  School of Computer Science
  49  *  Carnegie Mellon University
  50  *  Pittsburgh PA 15213-3890
  51  *
  52  * any improvements or extensions that they make and grant Carnegie Mellon
  53  * the rights to redistribute these changes.
  54  */
  55
  56 #ifndef _PPC_LOCK_H_
  57 #define _PPC_LOCK_H_
  58
  59 #include <sys/appleapiopts.h>
  60
  61 #ifdef __APPLE_API_PRIVATE
  62
  63 #include <kern/macro_help.h>
  64 #include <kern/assert.h>
  65
  66 extern unsigned int LockTimeOut;                        /* Number of hardware ticks of a lock timeout */
  67
  68 #if defined(MACH_KERNEL_PRIVATE)
  69
  70 #include <cpus.h>
  71
  72 #if !(NCPUS == 1 || ETAP_LOCK_TRACE || USLOCK_DEBUG)
  73
  74 #include <ppc/hw_lock_types.h>
  75
  76 #define simple_lock_init(l,t)   hw_lock_init(l)
  77 #define __slock_held_func__(l)  hw_lock_held(l)
  78
  79 extern void                     fast_usimple_lock(simple_lock_t);
  80 extern void                     fast_usimple_unlock(simple_lock_t);
  81 extern unsigned int             fast_usimple_lock_try(simple_lock_t);
  82
  83 #define simple_lock(l)          fast_usimple_lock(l)
  84 #define simple_unlock(l)        fast_usimple_unlock(l)
  85 #define simple_lock_try(l)      fast_usimple_lock_try(l)
  86 #define simple_lock_addr(l)     (&(l))
  87 #define thread_sleep_simple_lock(l, e, i) \
  88                                 thread_sleep_fast_usimple_lock((l), (e), (i))
  89
  90 #endif /* !(NCPUS == 1 || ETAP_LOCK_TRACE || USLOCK_DEBUG) */
  91
  92 #endif /* MACH_KERNEL_PRIVATE */
  93
  94 #endif /* __APPLE_API_PRIVATE */
  95
  96 #endif  /* _PPC_LOCK_H_ */