1*c54f35caSApple OSS Distributions /*
2*c54f35caSApple OSS Distributions * Copyright (c) 2017 Apple Inc. All rights reserved.
3*c54f35caSApple OSS Distributions *
4*c54f35caSApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5*c54f35caSApple OSS Distributions *
6*c54f35caSApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code
7*c54f35caSApple OSS Distributions * as defined in and that are subject to the Apple Public Source License
8*c54f35caSApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in
9*c54f35caSApple OSS Distributions * compliance with the License. The rights granted to you under the License
10*c54f35caSApple OSS Distributions * may not be used to create, or enable the creation or redistribution of,
11*c54f35caSApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to
12*c54f35caSApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any
13*c54f35caSApple OSS Distributions * terms of an Apple operating system software license agreement.
14*c54f35caSApple OSS Distributions *
15*c54f35caSApple OSS Distributions * Please obtain a copy of the License at
16*c54f35caSApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file.
17*c54f35caSApple OSS Distributions *
18*c54f35caSApple OSS Distributions * The Original Code and all software distributed under the License are
19*c54f35caSApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20*c54f35caSApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21*c54f35caSApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22*c54f35caSApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23*c54f35caSApple OSS Distributions * Please see the License for the specific language governing rights and
24*c54f35caSApple OSS Distributions * limitations under the License.
25*c54f35caSApple OSS Distributions *
26*c54f35caSApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27*c54f35caSApple OSS Distributions *
28*c54f35caSApple OSS Distributions */
29*c54f35caSApple OSS Distributions
30*c54f35caSApple OSS Distributions #include <pthread/priority_private.h>
31*c54f35caSApple OSS Distributions
32*c54f35caSApple OSS Distributions #ifndef QOS_MIN_RELATIVE_PRIORITY // from <sys/qos.h> in userspace
33*c54f35caSApple OSS Distributions #define QOS_MIN_RELATIVE_PRIORITY -15
34*c54f35caSApple OSS Distributions #endif
35*c54f35caSApple OSS Distributions
36*c54f35caSApple OSS Distributions pthread_priority_compact_t
_pthread_priority_normalize(pthread_priority_t pp)37*c54f35caSApple OSS Distributions _pthread_priority_normalize(pthread_priority_t pp)
38*c54f35caSApple OSS Distributions {
39*c54f35caSApple OSS Distributions if (pp & _PTHREAD_PRIORITY_EVENT_MANAGER_FLAG) {
40*c54f35caSApple OSS Distributions return _PTHREAD_PRIORITY_EVENT_MANAGER_FLAG;
41*c54f35caSApple OSS Distributions }
42*c54f35caSApple OSS Distributions if (_pthread_priority_has_qos(pp)) {
43*c54f35caSApple OSS Distributions int relpri = _pthread_priority_relpri(pp);
44*c54f35caSApple OSS Distributions if (relpri > 0 || relpri < QOS_MIN_RELATIVE_PRIORITY) {
45*c54f35caSApple OSS Distributions pp |= _PTHREAD_PRIORITY_PRIORITY_MASK;
46*c54f35caSApple OSS Distributions }
47*c54f35caSApple OSS Distributions return pp & (_PTHREAD_PRIORITY_OVERCOMMIT_FLAG |
48*c54f35caSApple OSS Distributions _PTHREAD_PRIORITY_FALLBACK_FLAG |
49*c54f35caSApple OSS Distributions _PTHREAD_PRIORITY_QOS_CLASS_MASK |
50*c54f35caSApple OSS Distributions _PTHREAD_PRIORITY_PRIORITY_MASK);
51*c54f35caSApple OSS Distributions }
52*c54f35caSApple OSS Distributions return _pthread_unspecified_priority();
53*c54f35caSApple OSS Distributions }
54*c54f35caSApple OSS Distributions
55*c54f35caSApple OSS Distributions pthread_priority_compact_t
_pthread_priority_normalize_for_ipc(pthread_priority_t pp)56*c54f35caSApple OSS Distributions _pthread_priority_normalize_for_ipc(pthread_priority_t pp)
57*c54f35caSApple OSS Distributions {
58*c54f35caSApple OSS Distributions if (_pthread_priority_has_qos(pp)) {
59*c54f35caSApple OSS Distributions int relpri = _pthread_priority_relpri(pp);
60*c54f35caSApple OSS Distributions if (relpri > 0 || relpri < QOS_MIN_RELATIVE_PRIORITY) {
61*c54f35caSApple OSS Distributions pp |= _PTHREAD_PRIORITY_PRIORITY_MASK;
62*c54f35caSApple OSS Distributions }
63*c54f35caSApple OSS Distributions return pp & (_PTHREAD_PRIORITY_QOS_CLASS_MASK |
64*c54f35caSApple OSS Distributions _PTHREAD_PRIORITY_PRIORITY_MASK);
65*c54f35caSApple OSS Distributions }
66*c54f35caSApple OSS Distributions return _pthread_unspecified_priority();
67*c54f35caSApple OSS Distributions }
68*c54f35caSApple OSS Distributions
69*c54f35caSApple OSS Distributions pthread_priority_compact_t
_pthread_priority_combine(pthread_priority_t base_pp,thread_qos_t qos)70*c54f35caSApple OSS Distributions _pthread_priority_combine(pthread_priority_t base_pp, thread_qos_t qos)
71*c54f35caSApple OSS Distributions {
72*c54f35caSApple OSS Distributions if (base_pp & _PTHREAD_PRIORITY_EVENT_MANAGER_FLAG) {
73*c54f35caSApple OSS Distributions return _PTHREAD_PRIORITY_EVENT_MANAGER_FLAG;
74*c54f35caSApple OSS Distributions }
75*c54f35caSApple OSS Distributions
76*c54f35caSApple OSS Distributions if (base_pp & _PTHREAD_PRIORITY_FALLBACK_FLAG) {
77*c54f35caSApple OSS Distributions if (!qos) {
78*c54f35caSApple OSS Distributions return (pthread_priority_compact_t)base_pp;
79*c54f35caSApple OSS Distributions }
80*c54f35caSApple OSS Distributions } else if (qos < _pthread_priority_thread_qos(base_pp)) {
81*c54f35caSApple OSS Distributions return (pthread_priority_compact_t)base_pp;
82*c54f35caSApple OSS Distributions }
83*c54f35caSApple OSS Distributions
84*c54f35caSApple OSS Distributions return _pthread_priority_make_from_thread_qos(qos, 0,
85*c54f35caSApple OSS Distributions base_pp & _PTHREAD_PRIORITY_OVERCOMMIT_FLAG);
86*c54f35caSApple OSS Distributions }
87