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2d21ac55 | 1 | /* |
b0d623f7 | 2 | * Copyright (c) 2007-2008 Apple Inc. All rights reserved. |
2d21ac55 A |
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 | */ | |
b0d623f7 A |
28 | |
29 | #ifdef XNU_KERNEL_PRIVATE | |
30 | ||
31 | #ifndef _KERN_AFFINITY_H_ | |
32 | #define _KERN_AFFINITY_H_ | |
33 | ||
34 | #ifdef MACH_KERNEL_PRIVATE | |
2d21ac55 A |
35 | |
36 | #include <kern/queue.h> | |
37 | #include <kern/processor.h> | |
38 | #include <kern/lock.h> | |
39 | ||
40 | /* | |
41 | * An affinity set object represents a set of threads identified by the user | |
42 | * to be sharing (cache) affinity. A task may have multiple affinity sets | |
43 | * defined. Each set has dis-affinity other sets. Tasks related by inheritance | |
44 | * may share the same affinity set namespace. | |
45 | * Affinity sets are used to advise (hint) thread placement. | |
46 | */ | |
47 | struct affinity_set { | |
48 | struct affinity_space *aset_space; /* namespace */ | |
49 | queue_chain_t aset_affinities; /* links affinities in group */ | |
50 | queue_head_t aset_threads; /* threads in affinity set */ | |
51 | uint32_t aset_thread_count; /* num threads in set */ | |
52 | uint32_t aset_tag; /* user-assigned tag */ | |
53 | uint32_t aset_num; /* kernel-assigned affinity */ | |
54 | processor_set_t aset_pset; /* processor set */ | |
55 | }; | |
56 | ||
57 | extern boolean_t thread_affinity_is_supported(void); | |
2d21ac55 A |
58 | extern void thread_affinity_dup(thread_t parent, thread_t child); |
59 | extern void thread_affinity_terminate(thread_t thread); | |
60 | extern void task_affinity_create( | |
61 | task_t, | |
62 | task_t); | |
63 | extern void task_affinity_deallocate( | |
64 | task_t); | |
65 | extern kern_return_t task_affinity_info( | |
66 | task_t, | |
67 | task_info_t, | |
68 | mach_msg_type_number_t *); | |
69 | ||
b0d623f7 A |
70 | #endif /* MACH_KERNEL_PRIVATE */ |
71 | ||
72 | extern kern_return_t thread_affinity_set(thread_t thread, uint32_t tag); | |
73 | extern uint32_t thread_affinity_get(thread_t thread); | |
74 | extern void thread_affinity_exec(thread_t thread); | |
75 | ||
76 | #endif /* _KERN_AFFINITY_H_ */ | |
77 | ||
78 | #endif /* XNU_KERNEL_PRIVATE */ |