1*1b191cb5SApple OSS Distributions /*
2*1b191cb5SApple OSS Distributions * Copyright (c) 2017 Apple Inc. All rights reserved.
3*1b191cb5SApple OSS Distributions *
4*1b191cb5SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5*1b191cb5SApple OSS Distributions *
6*1b191cb5SApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code
7*1b191cb5SApple OSS Distributions * as defined in and that are subject to the Apple Public Source License
8*1b191cb5SApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in
9*1b191cb5SApple OSS Distributions * compliance with the License. The rights granted to you under the License
10*1b191cb5SApple OSS Distributions * may not be used to create, or enable the creation or redistribution of,
11*1b191cb5SApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to
12*1b191cb5SApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any
13*1b191cb5SApple OSS Distributions * terms of an Apple operating system software license agreement.
14*1b191cb5SApple OSS Distributions *
15*1b191cb5SApple OSS Distributions * Please obtain a copy of the License at
16*1b191cb5SApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file.
17*1b191cb5SApple OSS Distributions *
18*1b191cb5SApple OSS Distributions * The Original Code and all software distributed under the License are
19*1b191cb5SApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20*1b191cb5SApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21*1b191cb5SApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22*1b191cb5SApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23*1b191cb5SApple OSS Distributions * Please see the License for the specific language governing rights and
24*1b191cb5SApple OSS Distributions * limitations under the License.
25*1b191cb5SApple OSS Distributions *
26*1b191cb5SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27*1b191cb5SApple OSS Distributions *
28*1b191cb5SApple OSS Distributions */
29*1b191cb5SApple OSS Distributions
30*1b191cb5SApple OSS Distributions #include <pthread/priority_private.h>
31*1b191cb5SApple OSS Distributions
32*1b191cb5SApple OSS Distributions #ifndef QOS_MIN_RELATIVE_PRIORITY // from <sys/qos.h> in userspace
33*1b191cb5SApple OSS Distributions #define QOS_MIN_RELATIVE_PRIORITY -15
34*1b191cb5SApple OSS Distributions #endif
35*1b191cb5SApple OSS Distributions
36*1b191cb5SApple OSS Distributions pthread_priority_compact_t
_pthread_priority_normalize(pthread_priority_t pp)37*1b191cb5SApple OSS Distributions _pthread_priority_normalize(pthread_priority_t pp)
38*1b191cb5SApple OSS Distributions {
39*1b191cb5SApple OSS Distributions if (pp & _PTHREAD_PRIORITY_EVENT_MANAGER_FLAG) {
40*1b191cb5SApple OSS Distributions return _PTHREAD_PRIORITY_EVENT_MANAGER_FLAG;
41*1b191cb5SApple OSS Distributions }
42*1b191cb5SApple OSS Distributions if (_pthread_priority_has_qos(pp)) {
43*1b191cb5SApple OSS Distributions int relpri = _pthread_priority_relpri(pp);
44*1b191cb5SApple OSS Distributions if (relpri > 0 || relpri < QOS_MIN_RELATIVE_PRIORITY) {
45*1b191cb5SApple OSS Distributions pp |= _PTHREAD_PRIORITY_PRIORITY_MASK;
46*1b191cb5SApple OSS Distributions }
47*1b191cb5SApple OSS Distributions return pp & (_PTHREAD_PRIORITY_OVERCOMMIT_FLAG |
48*1b191cb5SApple OSS Distributions _PTHREAD_PRIORITY_FALLBACK_FLAG |
49*1b191cb5SApple OSS Distributions _PTHREAD_PRIORITY_QOS_CLASS_MASK |
50*1b191cb5SApple OSS Distributions _PTHREAD_PRIORITY_PRIORITY_MASK);
51*1b191cb5SApple OSS Distributions }
52*1b191cb5SApple OSS Distributions return _pthread_unspecified_priority();
53*1b191cb5SApple OSS Distributions }
54*1b191cb5SApple OSS Distributions
55*1b191cb5SApple OSS Distributions pthread_priority_compact_t
_pthread_priority_normalize_for_ipc(pthread_priority_t pp)56*1b191cb5SApple OSS Distributions _pthread_priority_normalize_for_ipc(pthread_priority_t pp)
57*1b191cb5SApple OSS Distributions {
58*1b191cb5SApple OSS Distributions if (_pthread_priority_has_qos(pp)) {
59*1b191cb5SApple OSS Distributions int relpri = _pthread_priority_relpri(pp);
60*1b191cb5SApple OSS Distributions if (relpri > 0 || relpri < QOS_MIN_RELATIVE_PRIORITY) {
61*1b191cb5SApple OSS Distributions pp |= _PTHREAD_PRIORITY_PRIORITY_MASK;
62*1b191cb5SApple OSS Distributions }
63*1b191cb5SApple OSS Distributions return pp & (_PTHREAD_PRIORITY_QOS_CLASS_MASK |
64*1b191cb5SApple OSS Distributions _PTHREAD_PRIORITY_PRIORITY_MASK);
65*1b191cb5SApple OSS Distributions }
66*1b191cb5SApple OSS Distributions return _pthread_unspecified_priority();
67*1b191cb5SApple OSS Distributions }
68*1b191cb5SApple OSS Distributions
69*1b191cb5SApple OSS Distributions pthread_priority_compact_t
_pthread_priority_combine(pthread_priority_t base_pp,thread_qos_t qos)70*1b191cb5SApple OSS Distributions _pthread_priority_combine(pthread_priority_t base_pp, thread_qos_t qos)
71*1b191cb5SApple OSS Distributions {
72*1b191cb5SApple OSS Distributions if (base_pp & _PTHREAD_PRIORITY_EVENT_MANAGER_FLAG) {
73*1b191cb5SApple OSS Distributions return _PTHREAD_PRIORITY_EVENT_MANAGER_FLAG;
74*1b191cb5SApple OSS Distributions }
75*1b191cb5SApple OSS Distributions
76*1b191cb5SApple OSS Distributions if (base_pp & _PTHREAD_PRIORITY_FALLBACK_FLAG) {
77*1b191cb5SApple OSS Distributions if (!qos) {
78*1b191cb5SApple OSS Distributions return (pthread_priority_compact_t)base_pp;
79*1b191cb5SApple OSS Distributions }
80*1b191cb5SApple OSS Distributions } else if (qos < _pthread_priority_thread_qos(base_pp)) {
81*1b191cb5SApple OSS Distributions return (pthread_priority_compact_t)base_pp;
82*1b191cb5SApple OSS Distributions }
83*1b191cb5SApple OSS Distributions
84*1b191cb5SApple OSS Distributions return _pthread_priority_make_from_thread_qos(qos, 0,
85*1b191cb5SApple OSS Distributions base_pp & _PTHREAD_PRIORITY_OVERCOMMIT_FLAG);
86*1b191cb5SApple OSS Distributions }
87