1 | /* |
2 | * Copyright (c) 2019 Apple Inc. All rights reserved. |
3 | * |
4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
5 | * |
6 | * This file contains Original Code and/or Modifications of Original Code |
7 | * as defined in and that are subject to the Apple Public Source License |
8 | * Version 2.0 (the 'License'). You may not use this file except in |
9 | * compliance with the License. The rights granted to you under the License |
10 | * may not be used to create, or enable the creation or redistribution of, |
11 | * unlawful or unlicensed copies of an Apple operating system, or to |
12 | * circumvent, violate, or enable the circumvention or violation of, any |
13 | * terms of an Apple operating system software license agreement. |
14 | * |
15 | * Please obtain a copy of the License at |
16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. |
17 | * |
18 | * The Original Code and all software distributed under the License are |
19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
23 | * Please see the License for the specific language governing rights and |
24 | * limitations under the License. |
25 | * |
26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
27 | */ |
28 | |
29 | #ifndef _KERN_SCHED_URGENCY_H_ |
30 | #define _KERN_SCHED_URGENCY_H_ |
31 | |
32 | #ifdef MACH_KERNEL_PRIVATE |
33 | |
34 | #include <kern/kern_types.h> |
35 | |
36 | typedef enum thread_urgency { |
37 | THREAD_URGENCY_NONE = 0, /* processor is idle */ |
38 | THREAD_URGENCY_BACKGROUND = 1, /* "background" thread (i.e. min-power) */ |
39 | THREAD_URGENCY_NORMAL = 2, /* "normal" thread */ |
40 | THREAD_URGENCY_REAL_TIME = 3, /* "real-time" or urgent thread */ |
41 | THREAD_URGENCY_LOWPRI = 4, /* low priority but not "background" hint for performance management subsystem */ |
42 | THREAD_URGENCY_MAX = 5, /* Max */ |
43 | } thread_urgency_t; |
44 | |
45 | /* Returns the "urgency" of a thread (provided by scheduler) */ |
46 | extern thread_urgency_t thread_get_urgency( |
47 | thread_t thread, |
48 | uint64_t *rt_period, |
49 | uint64_t *rt_deadline); |
50 | |
51 | /* Tells the "urgency" of the just scheduled thread (provided by CPU PM) */ |
52 | extern void thread_tell_urgency( |
53 | thread_urgency_t urgency, |
54 | uint64_t rt_period, |
55 | uint64_t rt_deadline, |
56 | uint64_t sched_latency, |
57 | thread_t nthread); |
58 | |
59 | #endif /* MACH_KERNEL_PRIVATE */ |
60 | |
61 | __END_DECLS |
62 | |
63 | #endif /* _KERN_SCHED_URGENCY_H_ */ |
64 | |