kern/workqueue_internal.h

   1 /*
   2  * Copyright (c) 2014 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 #ifndef _WORKQUEUE_INTERNAL_H_
  30 #define _WORKQUEUE_INTERNAL_H_
  31
  32 /* These definitions are shared between the kext and userspace inside the pthread project. Consolidating
  33  * duplicate definitions that used to exist in both projects, when separate.
  34  */
  35
  36 // Sometimes something gets passed a bucket number and we need a way to express
  37 // that it's actually the event manager.  Use the (0)th bucket for that.
  38 #define WORKQ_THREAD_QOS_MIN        (THREAD_QOS_MAINTENANCE)
  39 #define WORKQ_THREAD_QOS_MAX        (THREAD_QOS_LAST - 1)
  40 #define WORKQ_THREAD_QOS_CLEANUP    (THREAD_QOS_LEGACY)
  41 #define WORKQ_THREAD_QOS_MANAGER    (THREAD_QOS_LAST) // outside of MIN/MAX
  42
  43 #define WORKQ_NUM_QOS_BUCKETS       (WORKQ_THREAD_QOS_MAX)
  44 #define WORKQ_NUM_BUCKETS           (WORKQ_THREAD_QOS_MAX + 1)
  45 #define WORKQ_IDX(qos)              ((qos) - 1) // 0 based index
  46
  47 // magical `nkevents` values for _pthread_wqthread
  48 #define WORKQ_EXIT_THREAD_NKEVENT   (-1)
  49
  50 #endif // _WORKQUEUE_INTERNAL_H_