The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/iokit/IOKit/IOSharedLock.h

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    1 /*
    2  * Copyright (c) 1998-2010 Apple Computer, Inc. All rights reserved.
    3  *
    4  * @APPLE_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. Please obtain a copy of the License at
   10  * http://www.opensource.apple.com/apsl/ and read it before using this
   11  * file.
   12  * 
   13  * The Original Code and all software distributed under the License are
   14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
   15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
   16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
   17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
   18  * Please see the License for the specific language governing rights and
   19  * limitations under the License.
   20  * 
   21  * @APPLE_LICENSE_HEADER_END@
   22  */
   23 
   24 #ifndef _IOKIT_IOSHAREDLOCK_H
   25 #define _IOKIT_IOSHAREDLOCK_H
   26 
   27 #include <libkern/OSAtomic.h>
   28 
   29 #define IOSharedLockData OSSpinLock
   30 #define ev_lock_data_t   OSSpinLock
   31 
   32 #ifdef KERNEL
   33 #define ev_unlock(l)     OSSpinLockUnlock(l)
   34 #define ev_try_lock(l)   OSSpinLockTry(l)
   35 #endif
   36 
   37 #endif /* ! _IOKIT_IOSHAREDLOCK_H */

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