osfmk/mach/sync_policy.h

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