1*aca3beaaSApple OSS Distributions /*
2*aca3beaaSApple OSS Distributions * Copyright (c) 2017 Apple Inc. All rights reserved.
3*aca3beaaSApple OSS Distributions *
4*aca3beaaSApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5*aca3beaaSApple OSS Distributions *
6*aca3beaaSApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code
7*aca3beaaSApple OSS Distributions * as defined in and that are subject to the Apple Public Source License
8*aca3beaaSApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in
9*aca3beaaSApple OSS Distributions * compliance with the License. The rights granted to you under the License
10*aca3beaaSApple OSS Distributions * may not be used to create, or enable the creation or redistribution of,
11*aca3beaaSApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to
12*aca3beaaSApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any
13*aca3beaaSApple OSS Distributions * terms of an Apple operating system software license agreement.
14*aca3beaaSApple OSS Distributions *
15*aca3beaaSApple OSS Distributions * Please obtain a copy of the License at
16*aca3beaaSApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file.
17*aca3beaaSApple OSS Distributions *
18*aca3beaaSApple OSS Distributions * The Original Code and all software distributed under the License are
19*aca3beaaSApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20*aca3beaaSApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21*aca3beaaSApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22*aca3beaaSApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23*aca3beaaSApple OSS Distributions * Please see the License for the specific language governing rights and
24*aca3beaaSApple OSS Distributions * limitations under the License.
25*aca3beaaSApple OSS Distributions *
26*aca3beaaSApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27*aca3beaaSApple OSS Distributions *
28*aca3beaaSApple OSS Distributions */
29*aca3beaaSApple OSS Distributions
30*aca3beaaSApple OSS Distributions #include <pthread/priority_private.h>
31*aca3beaaSApple OSS Distributions
32*aca3beaaSApple OSS Distributions #ifndef QOS_MIN_RELATIVE_PRIORITY // from <sys/qos.h> in userspace
33*aca3beaaSApple OSS Distributions #define QOS_MIN_RELATIVE_PRIORITY -15
34*aca3beaaSApple OSS Distributions #endif
35*aca3beaaSApple OSS Distributions
36*aca3beaaSApple OSS Distributions pthread_priority_compact_t
_pthread_priority_normalize(pthread_priority_t pp)37*aca3beaaSApple OSS Distributions _pthread_priority_normalize(pthread_priority_t pp)
38*aca3beaaSApple OSS Distributions {
39*aca3beaaSApple OSS Distributions if (pp & _PTHREAD_PRIORITY_EVENT_MANAGER_FLAG) {
40*aca3beaaSApple OSS Distributions return _PTHREAD_PRIORITY_EVENT_MANAGER_FLAG;
41*aca3beaaSApple OSS Distributions }
42*aca3beaaSApple OSS Distributions if (_pthread_priority_has_qos(pp)) {
43*aca3beaaSApple OSS Distributions int relpri = _pthread_priority_relpri(pp);
44*aca3beaaSApple OSS Distributions if (relpri > 0 || relpri < QOS_MIN_RELATIVE_PRIORITY) {
45*aca3beaaSApple OSS Distributions pp |= _PTHREAD_PRIORITY_PRIORITY_MASK;
46*aca3beaaSApple OSS Distributions }
47*aca3beaaSApple OSS Distributions return pp & (_PTHREAD_PRIORITY_OVERCOMMIT_FLAG |
48*aca3beaaSApple OSS Distributions _PTHREAD_PRIORITY_FALLBACK_FLAG |
49*aca3beaaSApple OSS Distributions _PTHREAD_PRIORITY_QOS_CLASS_MASK |
50*aca3beaaSApple OSS Distributions _PTHREAD_PRIORITY_PRIORITY_MASK);
51*aca3beaaSApple OSS Distributions }
52*aca3beaaSApple OSS Distributions return _pthread_unspecified_priority();
53*aca3beaaSApple OSS Distributions }
54*aca3beaaSApple OSS Distributions
55*aca3beaaSApple OSS Distributions pthread_priority_compact_t
_pthread_priority_normalize_for_ipc(pthread_priority_t pp)56*aca3beaaSApple OSS Distributions _pthread_priority_normalize_for_ipc(pthread_priority_t pp)
57*aca3beaaSApple OSS Distributions {
58*aca3beaaSApple OSS Distributions if (_pthread_priority_has_qos(pp)) {
59*aca3beaaSApple OSS Distributions int relpri = _pthread_priority_relpri(pp);
60*aca3beaaSApple OSS Distributions if (relpri > 0 || relpri < QOS_MIN_RELATIVE_PRIORITY) {
61*aca3beaaSApple OSS Distributions pp |= _PTHREAD_PRIORITY_PRIORITY_MASK;
62*aca3beaaSApple OSS Distributions }
63*aca3beaaSApple OSS Distributions return pp & (_PTHREAD_PRIORITY_QOS_CLASS_MASK |
64*aca3beaaSApple OSS Distributions _PTHREAD_PRIORITY_PRIORITY_MASK);
65*aca3beaaSApple OSS Distributions }
66*aca3beaaSApple OSS Distributions return _pthread_unspecified_priority();
67*aca3beaaSApple OSS Distributions }
68*aca3beaaSApple OSS Distributions
69*aca3beaaSApple OSS Distributions pthread_priority_compact_t
_pthread_priority_combine(pthread_priority_t base_pp,thread_qos_t qos)70*aca3beaaSApple OSS Distributions _pthread_priority_combine(pthread_priority_t base_pp, thread_qos_t qos)
71*aca3beaaSApple OSS Distributions {
72*aca3beaaSApple OSS Distributions if (base_pp & _PTHREAD_PRIORITY_EVENT_MANAGER_FLAG) {
73*aca3beaaSApple OSS Distributions return _PTHREAD_PRIORITY_EVENT_MANAGER_FLAG;
74*aca3beaaSApple OSS Distributions }
75*aca3beaaSApple OSS Distributions
76*aca3beaaSApple OSS Distributions if (base_pp & _PTHREAD_PRIORITY_FALLBACK_FLAG) {
77*aca3beaaSApple OSS Distributions if (!qos) {
78*aca3beaaSApple OSS Distributions return (pthread_priority_compact_t)base_pp;
79*aca3beaaSApple OSS Distributions }
80*aca3beaaSApple OSS Distributions } else if (qos < _pthread_priority_thread_qos(base_pp)) {
81*aca3beaaSApple OSS Distributions return (pthread_priority_compact_t)base_pp;
82*aca3beaaSApple OSS Distributions }
83*aca3beaaSApple OSS Distributions
84*aca3beaaSApple OSS Distributions return _pthread_priority_make_from_thread_qos(qos, 0,
85*aca3beaaSApple OSS Distributions base_pp & _PTHREAD_PRIORITY_OVERCOMMIT_FLAG);
86*aca3beaaSApple OSS Distributions }
87