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