/*
- * Copyright (c) 1993-1995, 1999-2000 Apple Computer, Inc.
- * All rights reserved.
+ * Copyright (c) 1993-1995, 1999-2008 Apple Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
+ * @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. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
+ * 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
* Please see the License for the specific language governing rights and
* limitations under the License.
*
- * @APPLE_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
* Declarations for timer interrupt callouts.
- *
- * HISTORY
- *
- * 20 December 2000 (debo)
- * Created.
*/
#ifndef _KERN_TIMER_CALL_H_
#define _KERN_TIMER_CALL_H_
#include <mach/mach_types.h>
+#include <kern/kern_types.h>
+
+#ifdef XNU_KERNEL_PRIVATE
+
+#include <kern/call_entry.h>
+#include <kern/simple_lock.h>
#ifdef MACH_KERNEL_PRIVATE
+#include <kern/queue.h>
-typedef struct call_entry *timer_call_t;
-typedef void *timer_call_param_t;
-typedef void (*timer_call_func_t)(
- timer_call_param_t param0,
- timer_call_param_t param1);
+extern boolean_t mach_timer_coalescing_enabled;
+extern void timer_call_queue_init(mpqueue_head_t *);
+#endif
-boolean_t
-timer_call_enter(
- timer_call_t call,
- uint64_t deadline);
+/*
+ * NOTE: for now, bsd/dev/dtrace/dtrace_glue.c has its own definition
+ * of this data structure, and the two had better match.
+ */
+typedef struct timer_call {
+ struct call_entry call_entry;
+ decl_simple_lock_data( ,lock); /* protects call_entry queue */
+ uint64_t soft_deadline;
+ uint32_t flags;
+ boolean_t async_dequeue; /* this field is protected by
+ call_entry queue's lock */
+ uint64_t ttd; /* Time to deadline at creation */
+} timer_call_data_t, *timer_call_t;
-boolean_t
-timer_call_enter1(
- timer_call_t call,
- timer_call_param_t param1,
- uint64_t deadline);
+#define EndOfAllTime 0xFFFFFFFFFFFFFFFFULL
-boolean_t
-timer_call_cancel(
- timer_call_t call);
+typedef void *timer_call_param_t;
+typedef void (*timer_call_func_t)(
+ timer_call_param_t param0,
+ timer_call_param_t param1);
-boolean_t
-timer_call_is_delayed(
- timer_call_t call,
- uint64_t *deadline);
+/*
+ * Flags to alter the default timer/timeout coalescing behavior
+ * on a per-timer_call basis.
+ *
+ * The SYS urgency classes indicate that the timer_call is not
+ * directly related to the current thread at the time the timer_call
+ * is entered, so it is ignored in the calculation entirely (only
+ * the subclass specified is used).
+ *
+ * The USER flags indicate that both the current thread scheduling and QoS
+ * attributes, in addition to the per-timer_call urgency specification,
+ * are used to establish coalescing behavior.
+ */
+#define TIMER_CALL_SYS_NORMAL TIMEOUT_URGENCY_SYS_NORMAL
+#define TIMER_CALL_SYS_CRITICAL TIMEOUT_URGENCY_SYS_CRITICAL
+#define TIMER_CALL_SYS_BACKGROUND TIMEOUT_URGENCY_SYS_BACKGROUND
-#include <kern/call_entry.h>
+#define TIMER_CALL_USER_MASK TIMEOUT_URGENCY_USER_MASK
+#define TIMER_CALL_USER_NORMAL TIMEOUT_URGENCY_USER_NORMAL
+#define TIMER_CALL_USER_CRITICAL TIMEOUT_URGENCY_USER_CRITICAL
+#define TIMER_CALL_USER_BACKGROUND TIMEOUT_URGENCY_USER_BACKGROUND
+
+#define TIMER_CALL_URGENCY_MASK TIMEOUT_URGENCY_MASK
+
+/*
+ * Indicate that a specific leeway value is being provided (otherwise
+ * the leeway parameter is ignored). This supplied value can currently
+ * only be used to extend the leeway calculated internally from the
+ * urgency class provided.
+ */
+#define TIMER_CALL_LEEWAY TIMEOUT_URGENCY_LEEWAY
+
+/*
+ * Non-migratable timer_call
+ */
+#define TIMER_CALL_LOCAL TIMEOUT_URGENCY_FIRST_AVAIL
+#define TIMER_CALL_RATELIMITED TIMEOUT_URGENCY_RATELIMITED
+extern boolean_t timer_call_enter(
+ timer_call_t call,
+ uint64_t deadline,
+ uint32_t flags);
+
+extern boolean_t timer_call_enter1(
+ timer_call_t call,
+ timer_call_param_t param1,
+ uint64_t deadline,
+ uint32_t flags);
+
+extern boolean_t timer_call_enter_with_leeway(
+ timer_call_t call,
+ timer_call_param_t param1,
+ uint64_t deadline,
+ uint64_t leeway,
+ uint32_t flags,
+ boolean_t ratelimited);
+
+extern boolean_t timer_call_quantum_timer_enter(
+ timer_call_t call,
+ timer_call_param_t param1,
+ uint64_t deadline,
+ uint64_t ctime);
+
+extern boolean_t timer_call_cancel(
+ timer_call_t call);
+
+extern boolean_t timer_call_quantum_timer_cancel(
+ timer_call_t call);
+
+extern void timer_call_init(void);
+
+extern void timer_call_setup(
+ timer_call_t call,
+ timer_call_func_t func,
+ timer_call_param_t param0);
+
+extern int timer_get_user_idle_level(void);
+extern kern_return_t timer_set_user_idle_level(int ilevel);
+
+#define NUM_LATENCY_QOS_TIERS (6)
+typedef struct {
+ uint32_t powergate_latency_abstime;
-typedef struct call_entry timer_call_data_t;
+ uint32_t idle_entry_timer_processing_hdeadline_threshold_abstime;
+ uint32_t interrupt_timer_coalescing_ilat_threshold_abstime;
+ uint32_t timer_resort_threshold_abstime;
-void
-timer_call_initialize(void);
+ int32_t timer_coalesce_rt_shift;
+ int32_t timer_coalesce_bg_shift;
+ int32_t timer_coalesce_kt_shift;
+ int32_t timer_coalesce_fp_shift;
+ int32_t timer_coalesce_ts_shift;
-void
-timer_call_setup(
- timer_call_t call,
- timer_call_func_t func,
- timer_call_param_t param0);
+ uint64_t timer_coalesce_rt_abstime_max;
+ uint64_t timer_coalesce_bg_abstime_max;
+ uint64_t timer_coalesce_kt_abstime_max;
+ uint64_t timer_coalesce_fp_abstime_max;
+ uint64_t timer_coalesce_ts_abstime_max;
-void
-timer_call_shutdown(
- processor_t processor);
+ uint32_t latency_qos_scale[NUM_LATENCY_QOS_TIERS];
+ uint64_t latency_qos_abstime_max[NUM_LATENCY_QOS_TIERS];
+ boolean_t latency_tier_rate_limited[NUM_LATENCY_QOS_TIERS];
+} timer_coalescing_priority_params_t;
+extern timer_coalescing_priority_params_t tcoal_prio_params;
-#endif /* MACH_KERNEL_PRIVATE */
+#endif /* XNU_KERNEL_PRIVATE */
#endif /* _KERN_TIMER_CALL_H_ */
projects / apple / xnu.git / blobdiff