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