osfmk/mach/sync_policy.h

   1 /*
   2  * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * @OSF_COPYRIGHT@
  24  */
  25
  26 #ifndef _SYNC_POLICY_H_
  27 #define _SYNC_POLICY_H_
  28
  29 typedef int sync_policy_t;
  30
  31 /*
  32  *      These options define the wait ordering of the synchronizers
  33  */
  34 #define SYNC_POLICY_FIFO                0x0
  35 #define SYNC_POLICY_FIXED_PRIORITY      0x1
  36 #define SYNC_POLICY_REVERSED            0x2
  37 #define SYNC_POLICY_ORDER_MASK          0x3
  38 #define SYNC_POLICY_LIFO                (SYNC_POLICY_FIFO|SYNC_POLICY_REVERSED)
  39
  40 /*
  41  *      These options provide addition (kernel-private) behaviors
  42  */
  43 #ifdef  KERNEL_PRIVATE
  44 #include <sys/appleapiopts.h>
  45
  46 #ifdef  __APPLE_API_EVOLVING
  47
  48 #define SYNC_POLICY_PREPOST             0x4
  49
  50 #endif  /* __APPLE_API_EVOLVING */
  51
  52 #endif  /* KERNEL_PRIVATE */
  53
  54 #define SYNC_POLICY_MAX                 0x7
  55
  56 #endif  /*_SYNC_POLICY_H_*/