iokit/IOKit/IOSharedLock.h

   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 */