osfmk/mach/sync_policy.h

   1 /*
   2  * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_OSREFERENCE_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.  The rights granted to you under the
  10  * License may not be used to create, or enable the creation or
  11  * redistribution of, unlawful or unlicensed copies of an Apple operating
  12  * system, or to circumvent, violate, or enable the circumvention or
  13  * violation of, any terms of an Apple operating system software license
  14  * agreement.
  15  *
  16  * Please obtain a copy of the License at
  17  * http://www.opensource.apple.com/apsl/ and read it before using this
  18  * file.
  19  *
  20  * The Original Code and all software distributed under the License are
  21  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  22  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  23  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  24  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  25  * Please see the License for the specific language governing rights and
  26  * limitations under the License.
  27  *
  28  * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
  29  */
  30 /*
  31  * @OSF_COPYRIGHT@
  32  */
  33
  34 #ifndef _MACH_SYNC_POLICY_H_
  35 #define _MACH_SYNC_POLICY_H_
  36
  37 typedef int sync_policy_t;
  38
  39 /*
  40  *      These options define the wait ordering of the synchronizers
  41  */
  42 #define SYNC_POLICY_FIFO                0x0
  43 #define SYNC_POLICY_FIXED_PRIORITY      0x1
  44 #define SYNC_POLICY_REVERSED            0x2
  45 #define SYNC_POLICY_ORDER_MASK          0x3
  46 #define SYNC_POLICY_LIFO                (SYNC_POLICY_FIFO|SYNC_POLICY_REVERSED)
  47
  48 #ifdef  KERNEL_PRIVATE
  49
  50 /*
  51  *      These options provide addition (kernel-private) behaviors
  52  */
  53
  54 #define SYNC_POLICY_PREPOST             0x4
  55
  56 #endif  /* KERNEL_PRIVATE */
  57
  58 #define SYNC_POLICY_MAX                 0x7
  59
  60 #endif  /* _MACH_SYNC_POLICY_H_ */