1*043036a2SApple OSS Distributions /* 2*043036a2SApple OSS Distributions * Copyright (c) 2007-2008 Apple Inc. All rights reserved. 3*043036a2SApple OSS Distributions * 4*043036a2SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5*043036a2SApple OSS Distributions * 6*043036a2SApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code 7*043036a2SApple OSS Distributions * as defined in and that are subject to the Apple Public Source License 8*043036a2SApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in 9*043036a2SApple OSS Distributions * compliance with the License. The rights granted to you under the License 10*043036a2SApple OSS Distributions * may not be used to create, or enable the creation or redistribution of, 11*043036a2SApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to 12*043036a2SApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any 13*043036a2SApple OSS Distributions * terms of an Apple operating system software license agreement. 14*043036a2SApple OSS Distributions * 15*043036a2SApple OSS Distributions * Please obtain a copy of the License at 16*043036a2SApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file. 17*043036a2SApple OSS Distributions * 18*043036a2SApple OSS Distributions * The Original Code and all software distributed under the License are 19*043036a2SApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20*043036a2SApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21*043036a2SApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22*043036a2SApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23*043036a2SApple OSS Distributions * Please see the License for the specific language governing rights and 24*043036a2SApple OSS Distributions * limitations under the License. 25*043036a2SApple OSS Distributions * 26*043036a2SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27*043036a2SApple OSS Distributions */ 28*043036a2SApple OSS Distributions 29*043036a2SApple OSS Distributions #ifdef XNU_KERNEL_PRIVATE 30*043036a2SApple OSS Distributions 31*043036a2SApple OSS Distributions #ifndef _KERN_AFFINITY_H_ 32*043036a2SApple OSS Distributions #define _KERN_AFFINITY_H_ 33*043036a2SApple OSS Distributions 34*043036a2SApple OSS Distributions #ifdef MACH_KERNEL_PRIVATE 35*043036a2SApple OSS Distributions 36*043036a2SApple OSS Distributions #include <kern/queue.h> 37*043036a2SApple OSS Distributions #include <kern/processor.h> 38*043036a2SApple OSS Distributions 39*043036a2SApple OSS Distributions /* 40*043036a2SApple OSS Distributions * An affinity set object represents a set of threads identified by the user 41*043036a2SApple OSS Distributions * to be sharing (cache) affinity. A task may have multiple affinity sets 42*043036a2SApple OSS Distributions * defined. Each set has dis-affinity other sets. Tasks related by inheritance 43*043036a2SApple OSS Distributions * may share the same affinity set namespace. 44*043036a2SApple OSS Distributions * Affinity sets are used to advise (hint) thread placement. 45*043036a2SApple OSS Distributions */ 46*043036a2SApple OSS Distributions struct affinity_set { 47*043036a2SApple OSS Distributions struct affinity_space *aset_space; /* namespace */ 48*043036a2SApple OSS Distributions queue_chain_t aset_affinities; /* links affinities in group */ 49*043036a2SApple OSS Distributions queue_head_t aset_threads; /* threads in affinity set */ 50*043036a2SApple OSS Distributions uint32_t aset_thread_count; /* num threads in set */ 51*043036a2SApple OSS Distributions uint32_t aset_tag; /* user-assigned tag */ 52*043036a2SApple OSS Distributions uint32_t aset_num; /* kernel-assigned affinity */ 53*043036a2SApple OSS Distributions processor_set_t aset_pset; /* processor set */ 54*043036a2SApple OSS Distributions }; 55*043036a2SApple OSS Distributions 56*043036a2SApple OSS Distributions extern boolean_t thread_affinity_is_supported(void); 57*043036a2SApple OSS Distributions extern void thread_affinity_dup(thread_t parent, thread_t child); 58*043036a2SApple OSS Distributions extern void thread_affinity_terminate(thread_t thread); 59*043036a2SApple OSS Distributions extern void task_affinity_create( 60*043036a2SApple OSS Distributions task_t, 61*043036a2SApple OSS Distributions task_t); 62*043036a2SApple OSS Distributions extern void task_affinity_deallocate( 63*043036a2SApple OSS Distributions task_t); 64*043036a2SApple OSS Distributions extern kern_return_t task_affinity_info( 65*043036a2SApple OSS Distributions task_t, 66*043036a2SApple OSS Distributions task_info_t, 67*043036a2SApple OSS Distributions mach_msg_type_number_t *); 68*043036a2SApple OSS Distributions 69*043036a2SApple OSS Distributions #endif /* MACH_KERNEL_PRIVATE */ 70*043036a2SApple OSS Distributions 71*043036a2SApple OSS Distributions extern kern_return_t thread_affinity_set(thread_t thread, uint32_t tag); 72*043036a2SApple OSS Distributions extern uint32_t thread_affinity_get(thread_t thread); 73*043036a2SApple OSS Distributions extern void thread_affinity_exec(thread_t thread); 74*043036a2SApple OSS Distributions 75*043036a2SApple OSS Distributions #endif /* _KERN_AFFINITY_H_ */ 76*043036a2SApple OSS Distributions 77*043036a2SApple OSS Distributions #endif /* XNU_KERNEL_PRIVATE */ 78