1*e7776783SApple OSS Distributions /*
2*e7776783SApple OSS Distributions * Copyright (c) 2017 Apple Inc. All rights reserved.
3*e7776783SApple OSS Distributions *
4*e7776783SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5*e7776783SApple OSS Distributions *
6*e7776783SApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code
7*e7776783SApple OSS Distributions * as defined in and that are subject to the Apple Public Source License
8*e7776783SApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in
9*e7776783SApple OSS Distributions * compliance with the License. The rights granted to you under the License
10*e7776783SApple OSS Distributions * may not be used to create, or enable the creation or redistribution of,
11*e7776783SApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to
12*e7776783SApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any
13*e7776783SApple OSS Distributions * terms of an Apple operating system software license agreement.
14*e7776783SApple OSS Distributions *
15*e7776783SApple OSS Distributions * Please obtain a copy of the License at
16*e7776783SApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file.
17*e7776783SApple OSS Distributions *
18*e7776783SApple OSS Distributions * The Original Code and all software distributed under the License are
19*e7776783SApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20*e7776783SApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21*e7776783SApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22*e7776783SApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23*e7776783SApple OSS Distributions * Please see the License for the specific language governing rights and
24*e7776783SApple OSS Distributions * limitations under the License.
25*e7776783SApple OSS Distributions *
26*e7776783SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27*e7776783SApple OSS Distributions *
28*e7776783SApple OSS Distributions */
29*e7776783SApple OSS Distributions
30*e7776783SApple OSS Distributions #include <pthread/priority_private.h>
31*e7776783SApple OSS Distributions
32*e7776783SApple OSS Distributions #ifndef QOS_MIN_RELATIVE_PRIORITY // from <sys/qos.h> in userspace
33*e7776783SApple OSS Distributions #define QOS_MIN_RELATIVE_PRIORITY -15
34*e7776783SApple OSS Distributions #endif
35*e7776783SApple OSS Distributions
36*e7776783SApple OSS Distributions pthread_priority_compact_t
_pthread_priority_normalize(pthread_priority_t pp)37*e7776783SApple OSS Distributions _pthread_priority_normalize(pthread_priority_t pp)
38*e7776783SApple OSS Distributions {
39*e7776783SApple OSS Distributions if (pp & _PTHREAD_PRIORITY_EVENT_MANAGER_FLAG) {
40*e7776783SApple OSS Distributions return _PTHREAD_PRIORITY_EVENT_MANAGER_FLAG;
41*e7776783SApple OSS Distributions }
42*e7776783SApple OSS Distributions if (_pthread_priority_has_qos(pp)) {
43*e7776783SApple OSS Distributions int relpri = _pthread_priority_relpri(pp);
44*e7776783SApple OSS Distributions if (relpri > 0 || relpri < QOS_MIN_RELATIVE_PRIORITY) {
45*e7776783SApple OSS Distributions pp |= _PTHREAD_PRIORITY_PRIORITY_MASK;
46*e7776783SApple OSS Distributions }
47*e7776783SApple OSS Distributions return pp & (_PTHREAD_PRIORITY_OVERCOMMIT_FLAG |
48*e7776783SApple OSS Distributions _PTHREAD_PRIORITY_FALLBACK_FLAG |
49*e7776783SApple OSS Distributions _PTHREAD_PRIORITY_QOS_CLASS_MASK |
50*e7776783SApple OSS Distributions _PTHREAD_PRIORITY_PRIORITY_MASK);
51*e7776783SApple OSS Distributions }
52*e7776783SApple OSS Distributions return _pthread_unspecified_priority();
53*e7776783SApple OSS Distributions }
54*e7776783SApple OSS Distributions
55*e7776783SApple OSS Distributions pthread_priority_compact_t
_pthread_priority_normalize_for_ipc(pthread_priority_t pp)56*e7776783SApple OSS Distributions _pthread_priority_normalize_for_ipc(pthread_priority_t pp)
57*e7776783SApple OSS Distributions {
58*e7776783SApple OSS Distributions if (_pthread_priority_has_qos(pp)) {
59*e7776783SApple OSS Distributions int relpri = _pthread_priority_relpri(pp);
60*e7776783SApple OSS Distributions if (relpri > 0 || relpri < QOS_MIN_RELATIVE_PRIORITY) {
61*e7776783SApple OSS Distributions pp |= _PTHREAD_PRIORITY_PRIORITY_MASK;
62*e7776783SApple OSS Distributions }
63*e7776783SApple OSS Distributions return pp & (_PTHREAD_PRIORITY_QOS_CLASS_MASK |
64*e7776783SApple OSS Distributions _PTHREAD_PRIORITY_PRIORITY_MASK);
65*e7776783SApple OSS Distributions }
66*e7776783SApple OSS Distributions return _pthread_unspecified_priority();
67*e7776783SApple OSS Distributions }
68*e7776783SApple OSS Distributions
69*e7776783SApple OSS Distributions pthread_priority_compact_t
_pthread_priority_combine(pthread_priority_t base_pp,thread_qos_t qos)70*e7776783SApple OSS Distributions _pthread_priority_combine(pthread_priority_t base_pp, thread_qos_t qos)
71*e7776783SApple OSS Distributions {
72*e7776783SApple OSS Distributions if (base_pp & _PTHREAD_PRIORITY_EVENT_MANAGER_FLAG) {
73*e7776783SApple OSS Distributions return _PTHREAD_PRIORITY_EVENT_MANAGER_FLAG;
74*e7776783SApple OSS Distributions }
75*e7776783SApple OSS Distributions
76*e7776783SApple OSS Distributions if (base_pp & _PTHREAD_PRIORITY_FALLBACK_FLAG) {
77*e7776783SApple OSS Distributions if (!qos) {
78*e7776783SApple OSS Distributions return (pthread_priority_compact_t)base_pp;
79*e7776783SApple OSS Distributions }
80*e7776783SApple OSS Distributions } else if (qos < _pthread_priority_thread_qos(base_pp)) {
81*e7776783SApple OSS Distributions return (pthread_priority_compact_t)base_pp;
82*e7776783SApple OSS Distributions }
83*e7776783SApple OSS Distributions
84*e7776783SApple OSS Distributions return _pthread_priority_make_from_thread_qos(qos, 0,
85*e7776783SApple OSS Distributions base_pp & _PTHREAD_PRIORITY_OVERCOMMIT_FLAG);
86*e7776783SApple OSS Distributions }
87