osfmk/kern/mk_sp.c

45 #include <kern/thread.h>
57 #include <kern/thread.h>
65  *	Set scheduling policy & priority for thread.
69 	thread_t		thread,
75 	if (	thread == THREAD_NULL		||
79 	if (thread->static_param)
87 	thread_lock(thread);
89 	if (	(thread->sched_mode != TH_MODE_REALTIME)	&&
90 			(thread->saved_mode != TH_MODE_REALTIME)		) {
91 		if (!(thread->sched_flags & TH_SFLAG_DEMOTED_MASK)) {
92 			boolean_t	oldmode = thread->sched_mode == TH_MODE_TIMESHARE;
95 				thread->sched_mode = TH_MODE_TIMESHARE;
97 				if ((thread->state & (TH_RUN|TH_IDLE)) == TH_RUN)
102 				thread->sched_mode = TH_MODE_FIXED;
104 				if ((thread->state & (TH_RUN|TH_IDLE)) == TH_RUN)
110 				thread->saved_mode = TH_MODE_TIMESHARE;
112 				thread->saved_mode = TH_MODE_FIXED;
115 		if (priority >= thread->max_priority)
116 			priority = thread->max_priority - thread->task_priority;
126 		priority += thread->task_priority;
128 		if (priority > thread->max_priority)
129 			priority = thread->max_priority;
135 		if ((thread->task->ext_appliedstate.apptype == PROC_POLICY_IOS_APPLE_DAEMON)  &&
136 			(thread->appliedstate.hw_bg == TASK_POLICY_BACKGROUND_ATTRIBUTE_ALL)) {
137 			thread->saved_importance = priority - thread->task_priority;
140 			thread->importance = priority - thread->task_priority;
146 		thread->importance = priority - thread->task_priority;
150 		set_priority(thread, priority);
153 	thread_unlock(thread);
163  *	the given thread. Policy can be any policy implemented by the
168 	thread_t				thread,
179 	if (	thread == THREAD_NULL			||
183 	thread_mtx_lock(thread);
256 		thread_mtx_unlock(thread);
261 	result = thread_policy_common(thread, policy, bas);
263 	thread_mtx_unlock(thread);
273  *	the given thread. Policy must be a policy which is enabled for the
278 	thread_t				thread,
292 	if (thread == THREAD_NULL)
295 	thread_mtx_lock(thread);
299 		thread_mtx_unlock(thread);
385 			if (rr_base->base_priority > thread->max_priority) {
390 			rr_limit.max_priority = thread->max_priority;
407 			if (fifo_base->base_priority > thread->max_priority) {
412 			fifo_limit.max_priority = thread->max_priority;
429 			if (ts_base->base_priority > thread->max_priority) {
434 			ts_limit.max_priority = thread->max_priority;
447 	thread_mtx_unlock(thread);
450 	    result = thread_set_policy(thread, pset,