X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/8f6c56a50524aa785f7e596d52dddfb331e18961..b7266188b87f3620ec3f9f717e57194a7dd989fe:/osfmk/kern/sched.h

diff --git a/osfmk/kern/sched.h b/osfmk/kern/sched.h
index 3783f8d89..9a153ea29 100644
--- a/osfmk/kern/sched.h
+++ b/osfmk/kern/sched.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2009 Apple Inc. All rights reserved.
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
@@ -158,6 +158,7 @@
 #define BASEPRI_FOREGROUND	(BASEPRI_DEFAULT + 16)				/* 47 */
 #define BASEPRI_BACKGROUND	(BASEPRI_DEFAULT + 15)				/* 46 */
 #define BASEPRI_DEFAULT		(MAXPRI_USER - (NRQS / 4))			/* 31 */
+#define MAXPRI_THROTTLE		(MINPRI + 4)						/*  4 */
 #define MINPRI_USER			MINPRI								/*  0 */
 
 /*
@@ -178,13 +179,6 @@ typedef struct run_queue	*run_queue_t;
 
 #define first_timeslice(processor)		((processor)->timeslice > 0)
 
-#define	processor_timeslice_setup(processor, thread)			\
-MACRO_BEGIN														\
-	(processor)->timeslice =									\
-		((thread)->sched_mode & TH_MODE_TIMESHARE)?				\
-			(processor)->processor_set->timeshare_quanta: 1;	\
-MACRO_END
-
 #define thread_quantum_init(thread)							\
 MACRO_BEGIN													\
 	(thread)->current_quantum = 							\
@@ -192,21 +186,14 @@ MACRO_BEGIN													\
 			(thread)->realtime.computation: std_quantum;	\
 MACRO_END
 
-/* Invoked at splsched by a thread on itself */
-#define csw_needed(thread, processor) (										\
-	((thread)->state & TH_SUSP)										||		\
-	(first_timeslice(processor)?											\
-	 ((processor)->runq.highq > (thread)->sched_pri				||			\
-	  (processor)->processor_set->runq.highq > (thread)->sched_pri) :		\
-	 ((processor)->runq.highq >= (thread)->sched_pri			||			\
-	  (processor)->processor_set->runq.highq >= (thread)->sched_pri))	)
+extern struct run_queue		rt_runq;
 
 /*
  *	Scheduler routines.
  */
 
 /* Remove thread from its run queue */
-extern run_queue_t	run_queue_remove(
+extern boolean_t	run_queue_remove(
 						thread_t	thread);
 
 /* Handle quantum expiration for an executing thread */
@@ -214,10 +201,8 @@ extern void		thread_quantum_expire(
 					timer_call_param_t	processor,
 					timer_call_param_t	thread);
 
-/* Called at splsched by a thread on itself */
-extern ast_t	csw_check(
-					thread_t		thread,
-					processor_t		processor);
+/* Context switch check for current processor */
+extern ast_t	csw_check(processor_t		processor);
 
 extern uint32_t	std_quantum, min_std_quantum;
 extern uint32_t	std_quantum_us;
@@ -243,34 +228,56 @@ extern void		compute_averunnable(
 extern void		compute_stack_target(
 					void			*arg);
 
+extern void		compute_memory_pressure(
+					void			*arg);
+
 /*
  *	Conversion factor from usage
  *	to priority.
  */
 extern uint32_t		sched_pri_shift;
-
-/*
- *	Scaling factor for usage
- *	based on load.
- */
+extern uint32_t		sched_fixed_shift;
 extern int8_t		sched_load_shifts[NRQS];
 
 extern int32_t		sched_poll_yield_shift;
 extern uint32_t		sched_safe_duration;
 
+extern uint32_t		sched_run_count, sched_share_count;
+extern uint32_t		sched_load_average, sched_mach_factor;
+
+extern uint32_t		avenrun[3], mach_factor[3];
+
 extern uint64_t		max_unsafe_computation;
 extern uint64_t		max_poll_computation;
 
-extern uint32_t		avenrun[3], mach_factor[3];
+#define sched_run_incr()			\
+MACRO_BEGIN													\
+	machine_run_count(hw_atomic_add(&sched_run_count, 1));	\
+MACRO_END
+
+#define sched_run_decr()			\
+MACRO_BEGIN													\
+	machine_run_count(hw_atomic_sub(&sched_run_count, 1));	\
+MACRO_END
+
+#define sched_share_incr()			\
+MACRO_BEGIN											\
+	(void)hw_atomic_add(&sched_share_count, 1);		\
+MACRO_END
+
+#define sched_share_decr()			\
+MACRO_BEGIN											\
+	(void)hw_atomic_sub(&sched_share_count, 1);		\
+MACRO_END
 
 /*
  *	thread_timer_delta macro takes care of both thread timers.
  */
 #define thread_timer_delta(thread, delta)					\
 MACRO_BEGIN													\
-	(delta) = timer_delta(&(thread)->system_timer,			\
+	(delta) = (typeof(delta))timer_delta(&(thread)->system_timer,			\
 							&(thread)->system_timer_save);	\
-	(delta) += timer_delta(&(thread)->user_timer,			\
+	(delta) += (typeof(delta))timer_delta(&(thread)->user_timer,			\
 							&(thread)->user_timer_save);	\
 MACRO_END