FreeBSD/Linux Kernel Cross Reference
sys/osfmk/ppc/lock.h

     /*
      * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
      *
      * @APPLE_LICENSE_HEADER_START@
      * 
      * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
      * 
      * This file contains Original Code and/or Modifications of Original Code
      * as defined in and that are subject to the Apple Public Source License
     * Version 2.0 (the 'License'). You may not use this file except in
     * compliance with the License. Please obtain a copy of the License at
     * http://www.opensource.apple.com/apsl/ and read it before using this
     * file.
     * 
     * The Original Code and all software distributed under the License are
     * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
     * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
     * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
     * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
     * Please see the License for the specific language governing rights and
     * limitations under the License.
     * 
     * @APPLE_LICENSE_HEADER_END@
     */
    /*
     * Copyright (C) 1998 Apple Computer
     * All Rights Reserved
     */
    /*
     * @OSF_COPYRIGHT@
     */
    
    /* 
     * Mach Operating System
     * Copyright (c) 1991,1990 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
     *  Pittsburgh PA 15213-3890
     * 
     * any improvements or extensions that they make and grant Carnegie Mellon
     * the rights to redistribute these changes.
     */
    
    #ifndef _PPC_LOCK_H_
    #define _PPC_LOCK_H_
    
    #include <sys/appleapiopts.h>
    
    #ifdef __APPLE_API_PRIVATE
    
    #include <kern/macro_help.h>
    #include <kern/assert.h>
    #include <mach/etap_events.h>
    #include <mach/etap.h>
    
    extern unsigned int LockTimeOut;                        /* Number of hardware ticks of a lock timeout */
    
    #if defined(MACH_KERNEL_PRIVATE)
    
    #include <cpus.h>
    
    #if !(NCPUS == 1 || ETAP_LOCK_TRACE || USLOCK_DEBUG)
    
    #include <ppc/hw_lock_types.h>
    
    #define __slock_held_func__(l)  hw_lock_held(l)
    
    extern void                     ppc_usimple_lock_init(simple_lock_t,etap_event_t);
    extern void                     ppc_usimple_lock(simple_lock_t);
    extern void                     ppc_usimple_unlock_rwmb(simple_lock_t);
    extern void                     ppc_usimple_unlock_rwcmb(simple_lock_t);
    extern unsigned int             ppc_usimple_lock_try(simple_lock_t);
    
    #define MACHINE_SIMPLE_LOCK
    
    #define simple_lock_init(l,t)   ppc_usimple_lock_init(l,t)
    #define simple_lock(l)                  ppc_usimple_lock(l)
    #define simple_unlock(l)                ppc_usimple_unlock_rwcmb(l)
    #define simple_unlock_rwmb(l)           ppc_usimple_unlock_rwmb(l)
    #define simple_lock_try(l)              ppc_usimple_lock_try(l)  
    #define simple_lock_addr(l)             (&(l))
    #define thread_sleep_simple_lock(l, e, i) \
                                    thread_sleep_fast_usimple_lock((l), (e), (i))
    
   #define mutex_unlock(l)         mutex_unlock_rwcmb(l)
   
   #endif /* !(NCPUS == 1 || ETAP_LOCK_TRACE || USLOCK_DEBUG) */
   
   #endif /* MACH_KERNEL_PRIVATE */
   
   #endif /* __APPLE_API_PRIVATE */
   
   #endif  /* _PPC_LOCK_H_ */

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