/* * Copyright (c) 2019 Apple Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. The rights granted to you under the License * may not be used to create, or enable the creation or redistribution of, * unlawful or unlicensed copies of an Apple operating system, or to * circumvent, violate, or enable the circumvention or violation of, any * terms of an Apple operating system software license agreement. * * Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ #ifndef _KERN_SCHED_URGENCY_H_ #define _KERN_SCHED_URGENCY_H_ #ifdef MACH_KERNEL_PRIVATE #include <kern/kern_types.h> typedef enum thread_urgency { THREAD_URGENCY_NONE = 0, /* processor is idle */ THREAD_URGENCY_BACKGROUND = 1, /* "background" thread (i.e. min-power) */ THREAD_URGENCY_NORMAL = 2, /* "normal" thread */ THREAD_URGENCY_REAL_TIME = 3, /* "real-time" or urgent thread */ THREAD_URGENCY_LOWPRI = 4, /* low priority but not "background" hint for performance management subsystem */ THREAD_URGENCY_MAX = 5, /* Max */ } thread_urgency_t; /* Returns the "urgency" of a thread (provided by scheduler) */ extern thread_urgency_t thread_get_urgency( thread_t thread, uint64_t *rt_period, uint64_t *rt_deadline); /* Tells the "urgency" of the just scheduled thread (provided by CPU PM) */ extern void thread_tell_urgency( thread_urgency_t urgency, uint64_t rt_period, uint64_t rt_deadline, uint64_t sched_latency, thread_t nthread); #endif /* MACH_KERNEL_PRIVATE */ __END_DECLS #endif /* _KERN_SCHED_URGENCY_H_ */