osfmk/kern/work_interval.h

   1 /*
   2  * Copyright (c) 2017 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
  29 #ifndef _KERN_WORK_INTERVAL_H_
  30 #define _KERN_WORK_INTERVAL_H_
  31
  32 #include <sys/cdefs.h>
  33
  34 #include <stdint.h>
  35 #include <kern/kern_types.h>
  36
  37 #include <kern/thread_group.h>
  38
  39 __BEGIN_DECLS
  40
  41 struct work_interval;
  42
  43 struct kern_work_interval_args {
  44         uint64_t work_interval_id;
  45         uint64_t start;
  46         uint64_t finish;
  47         uint64_t deadline;
  48         uint64_t next_start;
  49         uint32_t notify_flags;
  50         uint32_t create_flags;
  51         uint16_t urgency;
  52 };
  53
  54 struct kern_work_interval_create_args {
  55         uint64_t        wica_id;          /* out param */
  56         mach_port_name_t wica_port;        /* out param */
  57         uint32_t        wica_create_flags;
  58 };
  59
  60 /*
  61  * Allocate/assign a single work interval ID for a thread,
  62  * and support deallocating it.
  63  */
  64 extern kern_return_t
  65 kern_work_interval_create(thread_t thread, struct kern_work_interval_create_args *create_params);
  66
  67 extern kern_return_t
  68 kern_work_interval_get_flags_from_port(mach_port_name_t port_name, uint32_t*flags);
  69
  70 extern kern_return_t
  71 kern_work_interval_destroy(thread_t thread, uint64_t work_interval_id);
  72 extern kern_return_t
  73 kern_work_interval_join(thread_t thread, mach_port_name_t port_name);
  74
  75 extern kern_return_t
  76 kern_work_interval_notify(thread_t thread, struct kern_work_interval_args* kwi_args);
  77
  78 #ifdef MACH_KERNEL_PRIVATE
  79
  80 extern void work_interval_port_notify(mach_msg_header_t *msg);
  81 void work_interval_subsystem_init(void);
  82 bool work_interval_port_type_render_server(mach_port_name_t port_name);
  83
  84 #if CONFIG_SCHED_AUTO_JOIN
  85 bool work_interval_should_propagate(thread_t cthread, thread_t thread);
  86 void work_interval_auto_join_propagate(thread_t from, thread_t to);
  87 void work_interval_auto_join_unwind(thread_t thread);
  88 void work_interval_auto_join_demote(thread_t thread);
  89 #endif /* CONFIG_SCHED_AUTO_JOIN */
  90
  91 extern kern_return_t work_interval_thread_terminate(thread_t thread);
  92 #endif /* MACH_KERNEL_PRIVATE */
  93
  94 __END_DECLS
  95
  96 #endif /* !defined(_KERN_WORK_INTERVAL_H_) */