1*e3723e1fSApple OSS Distributions /*
2*e3723e1fSApple OSS Distributions * Copyright (c) 2017 Apple Inc. All rights reserved.
3*e3723e1fSApple OSS Distributions *
4*e3723e1fSApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5*e3723e1fSApple OSS Distributions *
6*e3723e1fSApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code
7*e3723e1fSApple OSS Distributions * as defined in and that are subject to the Apple Public Source License
8*e3723e1fSApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in
9*e3723e1fSApple OSS Distributions * compliance with the License. The rights granted to you under the License
10*e3723e1fSApple OSS Distributions * may not be used to create, or enable the creation or redistribution of,
11*e3723e1fSApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to
12*e3723e1fSApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any
13*e3723e1fSApple OSS Distributions * terms of an Apple operating system software license agreement.
14*e3723e1fSApple OSS Distributions *
15*e3723e1fSApple OSS Distributions * Please obtain a copy of the License at
16*e3723e1fSApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file.
17*e3723e1fSApple OSS Distributions *
18*e3723e1fSApple OSS Distributions * The Original Code and all software distributed under the License are
19*e3723e1fSApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20*e3723e1fSApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21*e3723e1fSApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22*e3723e1fSApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23*e3723e1fSApple OSS Distributions * Please see the License for the specific language governing rights and
24*e3723e1fSApple OSS Distributions * limitations under the License.
25*e3723e1fSApple OSS Distributions *
26*e3723e1fSApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27*e3723e1fSApple OSS Distributions *
28*e3723e1fSApple OSS Distributions */
29*e3723e1fSApple OSS Distributions
30*e3723e1fSApple OSS Distributions #include <pthread/priority_private.h>
31*e3723e1fSApple OSS Distributions
32*e3723e1fSApple OSS Distributions #ifndef QOS_MIN_RELATIVE_PRIORITY // from <sys/qos.h> in userspace
33*e3723e1fSApple OSS Distributions #define QOS_MIN_RELATIVE_PRIORITY -15
34*e3723e1fSApple OSS Distributions #endif
35*e3723e1fSApple OSS Distributions
36*e3723e1fSApple OSS Distributions pthread_priority_compact_t
_pthread_priority_normalize(pthread_priority_t pp)37*e3723e1fSApple OSS Distributions _pthread_priority_normalize(pthread_priority_t pp)
38*e3723e1fSApple OSS Distributions {
39*e3723e1fSApple OSS Distributions if (pp & _PTHREAD_PRIORITY_EVENT_MANAGER_FLAG) {
40*e3723e1fSApple OSS Distributions return _PTHREAD_PRIORITY_EVENT_MANAGER_FLAG;
41*e3723e1fSApple OSS Distributions }
42*e3723e1fSApple OSS Distributions if (_pthread_priority_has_qos(pp)) {
43*e3723e1fSApple OSS Distributions int relpri = _pthread_priority_relpri(pp);
44*e3723e1fSApple OSS Distributions if (relpri > 0 || relpri < QOS_MIN_RELATIVE_PRIORITY) {
45*e3723e1fSApple OSS Distributions pp |= _PTHREAD_PRIORITY_PRIORITY_MASK;
46*e3723e1fSApple OSS Distributions }
47*e3723e1fSApple OSS Distributions return pp & (_PTHREAD_PRIORITY_OVERCOMMIT_FLAG |
48*e3723e1fSApple OSS Distributions _PTHREAD_PRIORITY_FALLBACK_FLAG |
49*e3723e1fSApple OSS Distributions _PTHREAD_PRIORITY_QOS_CLASS_MASK |
50*e3723e1fSApple OSS Distributions _PTHREAD_PRIORITY_PRIORITY_MASK);
51*e3723e1fSApple OSS Distributions }
52*e3723e1fSApple OSS Distributions return _pthread_unspecified_priority();
53*e3723e1fSApple OSS Distributions }
54*e3723e1fSApple OSS Distributions
55*e3723e1fSApple OSS Distributions pthread_priority_compact_t
_pthread_priority_normalize_for_ipc(pthread_priority_t pp)56*e3723e1fSApple OSS Distributions _pthread_priority_normalize_for_ipc(pthread_priority_t pp)
57*e3723e1fSApple OSS Distributions {
58*e3723e1fSApple OSS Distributions if (_pthread_priority_has_qos(pp)) {
59*e3723e1fSApple OSS Distributions int relpri = _pthread_priority_relpri(pp);
60*e3723e1fSApple OSS Distributions if (relpri > 0 || relpri < QOS_MIN_RELATIVE_PRIORITY) {
61*e3723e1fSApple OSS Distributions pp |= _PTHREAD_PRIORITY_PRIORITY_MASK;
62*e3723e1fSApple OSS Distributions }
63*e3723e1fSApple OSS Distributions return pp & (_PTHREAD_PRIORITY_QOS_CLASS_MASK |
64*e3723e1fSApple OSS Distributions _PTHREAD_PRIORITY_PRIORITY_MASK);
65*e3723e1fSApple OSS Distributions }
66*e3723e1fSApple OSS Distributions return _pthread_unspecified_priority();
67*e3723e1fSApple OSS Distributions }
68*e3723e1fSApple OSS Distributions
69*e3723e1fSApple OSS Distributions pthread_priority_compact_t
_pthread_priority_combine(pthread_priority_t base_pp,thread_qos_t qos)70*e3723e1fSApple OSS Distributions _pthread_priority_combine(pthread_priority_t base_pp, thread_qos_t qos)
71*e3723e1fSApple OSS Distributions {
72*e3723e1fSApple OSS Distributions if (base_pp & _PTHREAD_PRIORITY_EVENT_MANAGER_FLAG) {
73*e3723e1fSApple OSS Distributions return _PTHREAD_PRIORITY_EVENT_MANAGER_FLAG;
74*e3723e1fSApple OSS Distributions }
75*e3723e1fSApple OSS Distributions
76*e3723e1fSApple OSS Distributions if (base_pp & _PTHREAD_PRIORITY_FALLBACK_FLAG) {
77*e3723e1fSApple OSS Distributions if (!qos) {
78*e3723e1fSApple OSS Distributions return (pthread_priority_compact_t)base_pp;
79*e3723e1fSApple OSS Distributions }
80*e3723e1fSApple OSS Distributions } else if (qos < _pthread_priority_thread_qos(base_pp)) {
81*e3723e1fSApple OSS Distributions return (pthread_priority_compact_t)base_pp;
82*e3723e1fSApple OSS Distributions }
83*e3723e1fSApple OSS Distributions
84*e3723e1fSApple OSS Distributions return _pthread_priority_make_from_thread_qos(qos, 0,
85*e3723e1fSApple OSS Distributions base_pp & _PTHREAD_PRIORITY_OVERCOMMIT_FLAG);
86*e3723e1fSApple OSS Distributions }
87