/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
- *
- * @APPLE_LICENSE_HEADER_START@
- *
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
- *
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
- *
- * @APPLE_LICENSE_HEADER_END@
- */
-/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2007 Apple Inc. All rights reserved.
+ *
+ * @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. 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.
*
- * HISTORY
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
*
- * 10 October 2000 (debo)
- * Created.
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
*
- * 30 November 2000 (debo)
- * Final resolution of review feedback.
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
#ifndef _MACH_THREAD_POLICY_H_
* and the default ones are being returned instead.
*/
-typedef natural_t thread_policy_flavor_t;
-typedef integer_t *thread_policy_t;
+typedef natural_t thread_policy_flavor_t;
+typedef integer_t *thread_policy_t;
/*
-kern_return_t thread_policy_set(
- thread_act_t thread,
- thread_policy_flavor_t flavor,
- thread_policy_t policy_info,
- mach_msg_type_number_t count);
-
-kern_return_t thread_policy_get(
- thread_act_t thread,
- thread_policy_flavor_t flavor,
- thread_policy_t policy_info,
- mach_msg_type_number_t *count,
- boolean_t *get_default);
-*/
+ * kern_return_t thread_policy_set(
+ * thread_t thread,
+ * thread_policy_flavor_t flavor,
+ * thread_policy_t policy_info,
+ * mach_msg_type_number_t count);
+ *
+ * kern_return_t thread_policy_get(
+ * thread_t thread,
+ * thread_policy_flavor_t flavor,
+ * thread_policy_t policy_info,
+ * mach_msg_type_number_t *count,
+ * boolean_t *get_default);
+ */
/*
* Defined flavors.
* [none]
*/
-#define THREAD_STANDARD_POLICY 1
+#define THREAD_STANDARD_POLICY 1
struct thread_standard_policy {
- natural_t no_data;
+ natural_t no_data;
};
-typedef struct thread_standard_policy thread_standard_policy_data_t;
-typedef struct thread_standard_policy *thread_standard_policy_t;
+typedef struct thread_standard_policy thread_standard_policy_data_t;
+typedef struct thread_standard_policy *thread_standard_policy_t;
-#define THREAD_STANDARD_POLICY_COUNT 0
+#define THREAD_STANDARD_POLICY_COUNT 0
/*
* THREAD_EXTENDED_POLICY:
* behavior as THREAD_STANDARD_POLICY.
*/
-#define THREAD_EXTENDED_POLICY 1
+#define THREAD_EXTENDED_POLICY 1
struct thread_extended_policy {
- boolean_t timeshare;
+ boolean_t timeshare;
};
-typedef struct thread_extended_policy thread_extended_policy_data_t;
-typedef struct thread_extended_policy *thread_extended_policy_t;
+typedef struct thread_extended_policy thread_extended_policy_data_t;
+typedef struct thread_extended_policy *thread_extended_policy_t;
-#define THREAD_EXTENDED_POLICY_COUNT \
- (sizeof (thread_extended_policy_data_t) / sizeof (integer_t))
+#define THREAD_EXTENDED_POLICY_COUNT ((mach_msg_type_number_t) \
+ (sizeof (thread_extended_policy_data_t) / sizeof (integer_t)))
/*
* THREAD_TIME_CONSTRAINT_POLICY:
* interrupted, subject to the constraint specified above.
*/
-#define THREAD_TIME_CONSTRAINT_POLICY 2
+#define THREAD_TIME_CONSTRAINT_POLICY 2
struct thread_time_constraint_policy {
- uint32_t period;
- uint32_t computation;
- uint32_t constraint;
- boolean_t preemptible;
+ uint32_t period;
+ uint32_t computation;
+ uint32_t constraint;
+ boolean_t preemptible;
};
-typedef struct thread_time_constraint_policy \
- thread_time_constraint_policy_data_t;
-typedef struct thread_time_constraint_policy \
- *thread_time_constraint_policy_t;
+typedef struct thread_time_constraint_policy \
+ thread_time_constraint_policy_data_t;
+typedef struct thread_time_constraint_policy \
+ *thread_time_constraint_policy_t;
-#define THREAD_TIME_CONSTRAINT_POLICY_COUNT \
- (sizeof (thread_time_constraint_policy_data_t) / sizeof (integer_t))
+#define THREAD_TIME_CONSTRAINT_POLICY_COUNT ((mach_msg_type_number_t) \
+ (sizeof (thread_time_constraint_policy_data_t) / sizeof (integer_t)))
/*
* THREAD_PRECEDENCE_POLICY:
* importance: The importance is specified as a signed value.
*/
-#define THREAD_PRECEDENCE_POLICY 3
+#define THREAD_PRECEDENCE_POLICY 3
struct thread_precedence_policy {
- integer_t importance;
+ integer_t importance;
+};
+
+typedef struct thread_precedence_policy thread_precedence_policy_data_t;
+typedef struct thread_precedence_policy *thread_precedence_policy_t;
+
+#define THREAD_PRECEDENCE_POLICY_COUNT ((mach_msg_type_number_t) \
+ (sizeof (thread_precedence_policy_data_t) / sizeof (integer_t)))
+
+/*
+ * THREAD_AFFINITY_POLICY:
+ *
+ * This policy is experimental.
+ * This may be used to express affinity relationships
+ * between threads in the task. Threads with the same affinity tag will
+ * be scheduled to share an L2 cache if possible. That is, affinity tags
+ * are a hint to the scheduler for thread placement.
+ *
+ * The namespace of affinity tags is generally local to one task. However,
+ * a child task created after the assignment of affinity tags by its parent
+ * will share that namespace. In particular, a family of forked processes
+ * may be created with a shared affinity namespace.
+ *
+ * Parameters:
+ * tag: The affinity set identifier.
+ */
+
+#define THREAD_AFFINITY_POLICY 4
+
+struct thread_affinity_policy {
+ integer_t affinity_tag;
+};
+
+#define THREAD_AFFINITY_TAG_NULL 0
+
+typedef struct thread_affinity_policy thread_affinity_policy_data_t;
+typedef struct thread_affinity_policy *thread_affinity_policy_t;
+
+#define THREAD_AFFINITY_POLICY_COUNT ((mach_msg_type_number_t) \
+ (sizeof (thread_affinity_policy_data_t) / sizeof (integer_t)))
+
+/*
+ * THREAD_BACKGROUND_POLICY:
+ */
+
+#define THREAD_BACKGROUND_POLICY 5
+
+struct thread_background_policy {
+ integer_t priority;
+};
+
+#define THREAD_BACKGROUND_POLICY_DARWIN_BG 0x1000
+
+typedef struct thread_background_policy thread_background_policy_data_t;
+typedef struct thread_background_policy *thread_background_policy_t;
+
+#define THREAD_BACKGROUND_POLICY_COUNT ((mach_msg_type_number_t) \
+ (sizeof (thread_background_policy_data_t) / sizeof (integer_t)))
+
+
+#define THREAD_LATENCY_QOS_POLICY 7
+typedef integer_t thread_latency_qos_t;
+
+struct thread_latency_qos_policy {
+ thread_latency_qos_t thread_latency_qos_tier;
+};
+
+typedef struct thread_latency_qos_policy thread_latency_qos_policy_data_t;
+typedef struct thread_latency_qos_policy *thread_latency_qos_policy_t;
+
+#define THREAD_LATENCY_QOS_POLICY_COUNT ((mach_msg_type_number_t) \
+ (sizeof (thread_latency_qos_policy_data_t) / sizeof (integer_t)))
+
+#define THREAD_THROUGHPUT_QOS_POLICY 8
+typedef integer_t thread_throughput_qos_t;
+
+struct thread_throughput_qos_policy {
+ thread_throughput_qos_t thread_throughput_qos_tier;
+};
+
+typedef struct thread_throughput_qos_policy thread_throughput_qos_policy_data_t;
+typedef struct thread_throughput_qos_policy *thread_throughput_qos_policy_t;
+
+#define THREAD_THROUGHPUT_QOS_POLICY_COUNT ((mach_msg_type_number_t) \
+ (sizeof (thread_throughput_qos_policy_data_t) / sizeof (integer_t)))
+
+#ifdef PRIVATE
+
+/*
+ * THREAD_POLICY_STATE:
+ */
+#define THREAD_POLICY_STATE 6
+
+#define THREAD_POLICY_STATE_FLAG_STATIC_PARAM 0x1
+
+struct thread_policy_state {
+ integer_t requested;
+ integer_t effective;
+ integer_t pending;
+ integer_t flags;
+ uint64_t thps_requested_policy;
+ uint64_t thps_effective_policy;
+ uint32_t thps_user_promotions;
+ uint32_t thps_user_promotion_basepri;
+ uint32_t thps_ipc_overrides;
+ uint32_t reserved32;
+ uint64_t reserved[2];
+};
+
+typedef struct thread_policy_state thread_policy_state_data_t;
+typedef struct thread_policy_state *thread_policy_state_t;
+
+#define THREAD_POLICY_STATE_COUNT ((mach_msg_type_number_t) \
+ (sizeof (thread_policy_state_data_t) / sizeof (integer_t)))
+
+/*
+ * THREAD_QOS_POLICY:
+ */
+#define THREAD_QOS_POLICY 9
+#define THREAD_QOS_POLICY_OVERRIDE 10
+
+typedef uint8_t thread_qos_t;
+#define THREAD_QOS_UNSPECIFIED 0
+#define THREAD_QOS_DEFAULT THREAD_QOS_UNSPECIFIED /* Temporary rename */
+#define THREAD_QOS_MAINTENANCE 1
+#define THREAD_QOS_BACKGROUND 2
+#define THREAD_QOS_UTILITY 3
+#define THREAD_QOS_LEGACY 4 /* i.e. default workq threads */
+#define THREAD_QOS_USER_INITIATED 5
+#define THREAD_QOS_USER_INTERACTIVE 6
+
+#define THREAD_QOS_LAST 7
+
+#define THREAD_QOS_MIN_TIER_IMPORTANCE (-15)
+
+/*
+ * Overrides are inputs to the task/thread policy engine that
+ * temporarily elevate the effective QoS of a thread without changing
+ * its steady-state (and round-trip-able) requested QoS. The
+ * interfaces into the kernel allow the caller to associate a resource
+ * and type that describe the reason/lifecycle of the override. For
+ * instance, a contended pthread_mutex_t held by a UTILITY thread
+ * might get an override to USER_INTERACTIVE, with the resource
+ * being the userspace address of the pthread_mutex_t. When the
+ * owning thread releases that resource, it can call into the
+ * task policy subsystem to drop the override because of that resource,
+ * although if more contended locks are held by the thread, the
+ * effective QoS may remain overridden for longer.
+ *
+ * THREAD_QOS_OVERRIDE_TYPE_PTHREAD_MUTEX is used for contended
+ * pthread_mutex_t's via the pthread kext. The holder gets an override
+ * with resource=&mutex and a count of 1 by the initial contender.
+ * Subsequent contenders raise the QoS value, until the holder
+ * decrements the count to 0 and the override is released.
+ *
+ * THREAD_QOS_OVERRIDE_TYPE_PTHREAD_RWLOCK is unimplemented and has no
+ * specified semantics.
+ *
+ * THREAD_QOS_OVERRIDE_TYPE_PTHREAD_EXPLICIT_OVERRIDE are explicitly
+ * paired start/end overrides on a target thread. The resource can
+ * either be a memory allocation in userspace, or the pthread_t of the
+ * overrider if no allocation was used.
+ *
+ * THREAD_QOS_OVERRIDE_TYPE_WILDCARD is a catch-all which will reset every
+ * resource matching the resource value. Passing
+ * THREAD_QOS_OVERRIDE_RESOURCE_WILDCARD as well will reset everything.
+ */
+
+#define THREAD_QOS_OVERRIDE_TYPE_UNKNOWN (0)
+#define THREAD_QOS_OVERRIDE_TYPE_PTHREAD_MUTEX (1)
+#define THREAD_QOS_OVERRIDE_TYPE_PTHREAD_RWLOCK (2)
+#define THREAD_QOS_OVERRIDE_TYPE_PTHREAD_EXPLICIT_OVERRIDE (3)
+#define THREAD_QOS_OVERRIDE_TYPE_WILDCARD (5)
+
+/* A special resource value to indicate a resource wildcard */
+#define THREAD_QOS_OVERRIDE_RESOURCE_WILDCARD (~((user_addr_t)0))
+
+struct thread_qos_policy {
+ integer_t qos_tier;
+ integer_t tier_importance;
+};
+
+typedef struct thread_qos_policy thread_qos_policy_data_t;
+typedef struct thread_qos_policy *thread_qos_policy_t;
+
+#define THREAD_QOS_POLICY_COUNT ((mach_msg_type_number_t) \
+ (sizeof (thread_qos_policy_data_t) / sizeof (integer_t)))
+
+#endif /* PRIVATE */
+
+#ifdef PRIVATE
+
+/*
+ * Internal bitfields are privately exported for revlocked tracing tools like msa to decode tracepoints.
+ *
+ * These struct definitions *will* change in the future.
+ * When they do, we will update THREAD_POLICY_INTERNAL_STRUCT_VERSION.
+ */
+
+#define THREAD_POLICY_INTERNAL_STRUCT_VERSION 5
+
+// legacy names
+#define thrp_qos_ipc_override thrp_qos_kevent_override
+
+struct thread_requested_policy {
+ uint64_t thrp_int_darwinbg :1, /* marked as darwinbg via setpriority */
+ thrp_ext_darwinbg :1,
+ thrp_int_iotier :2, /* IO throttle tier */
+ thrp_ext_iotier :2,
+ thrp_int_iopassive :1, /* should IOs cause lower tiers to be throttled */
+ thrp_ext_iopassive :1,
+ thrp_latency_qos :3, /* Timer latency QoS */
+ thrp_through_qos :3, /* Computation throughput QoS */
+
+ thrp_pidbind_bg :1, /* task i'm bound to is marked 'watchbg' */
+ thrp_qos :3, /* thread qos class */
+ thrp_qos_relprio :4, /* thread qos relative priority (store as inverse, -10 -> 0xA) */
+ thrp_qos_override :3, /* thread qos class override */
+ thrp_qos_promote :3, /* thread qos class from promotion */
+ thrp_qos_kevent_override:3, /* thread qos class from kevent override */
+ thrp_terminated :1, /* heading for termination */
+ thrp_qos_sync_ipc_override:3, /* now unused */
+ thrp_qos_workq_override :3, /* thread qos class override (workq) */
+ thrp_qos_wlsvc_override :3, /* workloop servicer qos class override */
+
+ thrp_reserved :23;
+};
+
+struct thread_effective_policy {
+ uint64_t thep_darwinbg :1, /* marked as 'background', and sockets are marked bg when created */
+ thep_io_tier :2, /* effective throttle tier */
+ thep_io_passive :1, /* should IOs cause lower tiers to be throttled */
+ thep_all_sockets_bg :1, /* All existing sockets in process are marked as bg (thread: all created by thread) */
+ thep_new_sockets_bg :1, /* Newly created sockets should be marked as bg */
+ thep_terminated :1, /* all throttles have been removed for quick exit or SIGTERM handling */
+ thep_qos_ui_is_urgent :1, /* bump UI-Interactive QoS up to the urgent preemption band */
+ thep_latency_qos :3, /* Timer latency QoS level */
+ thep_through_qos :3, /* Computation throughput QoS level */
+
+ thep_qos :3, /* thread qos class */
+ thep_qos_relprio :4, /* thread qos relative priority (store as inverse, -10 -> 0xA) */
+ thep_qos_promote :3, /* thread qos class used for promotion */
+
+ thep_reserved :40;
};
-typedef struct thread_precedence_policy thread_precedence_policy_data_t;
-typedef struct thread_precedence_policy *thread_precedence_policy_t;
+#endif /* PRIVATE */
-#define THREAD_PRECEDENCE_POLICY_COUNT \
- (sizeof (thread_precedence_policy_data_t) / sizeof (integer_t))
-#endif /* _MACH_THREAD_POLICY_H_ */
+#endif /* _MACH_THREAD_POLICY_H_ */
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