/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2012 Apple Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_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 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.
*
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * 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
* 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.
+ * 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.
*
- * @APPLE_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
* @OSF_FREE_COPYRIGHT@
#include <mach/thread_status.h>
#include <mach/exception_types.h>
-#include <kern/cpu_data.h> /* for current_thread */
#include <kern/kern_types.h>
-#include <ipc/ipc_types.h>
-
-/*
- * Logically, a thread of control consists of two parts:
- *
- * + A thread_shuttle, which may migrate due to resource contention
- *
- * + A thread_activation, which remains attached to a task.
- *
- * The thread_shuttle contains scheduling info, accounting info,
- * and links to the thread_activation within which the shuttle is
- * currently operating.
- *
- * An activation always has a valid task pointer, and it is always constant.
- * The activation is only linked onto the task's activation list until
- * the activation is terminated.
- *
- * The thread holds a reference on the activation while using it.
- */
-
-#include <sys/appleapiopts.h>
-
-#ifdef __APPLE_API_PRIVATE
+#include <sys/cdefs.h>
#ifdef MACH_KERNEL_PRIVATE
-#include <cpus.h>
#include <cputypes.h>
#include <mach_assert.h>
-#include <mach_host.h>
-#include <mach_prof.h>
-#include <mach_lock_mon.h>
#include <mach_ldebug.h>
+#include <ipc/ipc_types.h>
+
#include <mach/port.h>
-#include <kern/ast.h>
#include <kern/cpu_number.h>
#include <kern/queue.h>
-#include <kern/time_out.h>
#include <kern/timer.h>
#include <kern/lock.h>
+#include <kern/locks.h>
#include <kern/sched.h>
#include <kern/sched_prim.h>
#include <kern/thread_call.h>
#include <kern/timer_call.h>
#include <kern/task.h>
#include <kern/exception.h>
-#include <kern/etap_macros.h>
+#include <kern/affinity.h>
+
#include <ipc/ipc_kmsg.h>
-#include <ipc/ipc_port.h>
+#include <machine/cpu_data.h>
#include <machine/thread.h>
-#include <machine/thread_act.h>
struct thread {
/*
* NOTE: The runq field in the thread structure has an unusual
- * locking protocol. If its value is RUN_QUEUE_NULL, then it is
+ * locking protocol. If its value is PROCESSOR_NULL, then it is
* locked by the thread_lock, but if its value is something else
- * (i.e. a run_queue) then it is locked by that run_queue's lock.
+ * then it is locked by the associated run queue lock.
*
- * Beginning of thread_shuttle proper. When the thread is on
- * a wait queue, these first three fields are treated as an un-
- * official union with a wait_queue_element. If you change
- * these, you must change that definition as well (wait_queue.h).
+ * When the thread is on a wait queue, these first three fields
+ * are treated as an unofficial union with a wait_queue_element.
+ * If you change these, you must change that definition as well
+ * (kern/wait_queue.h).
*/
/* Items examined often, modified infrequently */
queue_chain_t links; /* run/wait queue links */
- run_queue_t runq; /* run queue thread is on SEE BELOW */
+ processor_t runq; /* run queue assignment */
wait_queue_t wait_queue; /* wait queue we are currently on */
event64_t wait_event; /* wait queue event */
- thread_act_t top_act; /* "current" thr_act */
- uint32_t /* Only set by thread itself */
- interrupt_level:2, /* interrupts/aborts allowed */
- vm_privilege:1, /* can use reserved memory? */
- active_callout:1, /* an active callout */
- :0;
-
-
/* Data updated during assert_wait/thread_wakeup */
decl_simple_lock_data(,sched_lock) /* scheduling lock (thread_lock()) */
- decl_simple_lock_data(,wake_lock) /* covers wake_active (wake_lock())*/
- boolean_t wake_active; /* Someone is waiting for this */
+ decl_simple_lock_data(,wake_lock) /* for thread stop / wait (wake_lock()) */
+ integer_t options; /* options set by thread itself */
+#define TH_OPT_INTMASK 0x0003 /* interrupt / abort level */
+#define TH_OPT_VMPRIV 0x0004 /* may allocate reserved memory */
+#define TH_OPT_DTRACE 0x0008 /* executing under dtrace_probe */
+#define TH_OPT_SYSTEM_CRITICAL 0x0010 /* Thread must always be allowed to run - even under heavy load */
+#define TH_OPT_PROC_CPULIMIT 0x0020 /* Thread has a task-wide CPU limit applied to it */
+#define TH_OPT_PRVT_CPULIMIT 0x0040 /* Thread has a thread-private CPU limit applied to it */
+#define TH_OPT_IDLE_THREAD 0x0080 /* Thread is a per-processor idle thread */
+
+ boolean_t wake_active; /* wake event on stop */
int at_safe_point; /* thread_abort_safely allowed */
ast_t reason; /* why we blocked */
+ thread_continue_t continuation; /* continue here next dispatch */
+ void *parameter; /* continuation parameter */
wait_result_t wait_result; /* outcome of wait -
* may be examined by this thread
* WITHOUT locking */
- thread_roust_t roust; /* routine to roust it after wait */
- thread_continue_t continuation; /* resume here next dispatch */
/* Data updated/used in thread_invoke */
- struct funnel_lock *funnel_lock; /* Non-reentrancy funnel */
int funnel_state;
+ struct funnel_lock *funnel_lock; /* Non-reentrancy funnel */
#define TH_FN_OWNED 0x1 /* we own the funnel */
#define TH_FN_REFUNNEL 0x2 /* re-acquire funnel on dispatch */
#define TH_RUN 0x04 /* running or on runq */
#define TH_UNINT 0x08 /* waiting uninteruptibly */
#define TH_TERMINATE 0x10 /* halted at termination */
+#define TH_TERMINATE2 0x20 /* added to termination queue */
-#define TH_ABORT 0x20 /* abort interruptible waits */
-#define TH_ABORT_SAFELY 0x40 /* ... but only those at safe point */
-
-#define TH_IDLE 0x80 /* processor idle thread */
-
-#define TH_SCHED_STATE (TH_WAIT|TH_SUSP|TH_RUN|TH_UNINT)
-
-#define TH_STACK_HANDOFF 0x0100 /* thread has no kernel stack */
-#define TH_STACK_ALLOC 0x0200 /* waiting for stack allocation */
-#define TH_STACK_STATE (TH_STACK_HANDOFF | TH_STACK_ALLOC)
+#define TH_IDLE 0x80 /* idling processor */
/* Scheduling information */
- integer_t sched_mode; /* scheduling mode bits */
-#define TH_MODE_REALTIME 0x0001 /* time constraints supplied */
-#define TH_MODE_TIMESHARE 0x0002 /* use timesharing algorithm */
-#define TH_MODE_PREEMPT 0x0004 /* can preempt kernel contexts */
-#define TH_MODE_FAILSAFE 0x0008 /* fail-safe has tripped */
-#define TH_MODE_PROMOTED 0x0010 /* sched pri has been promoted */
-#define TH_MODE_FORCEDPREEMPT 0x0020 /* force setting of mode PREEMPT */
-#define TH_MODE_DEPRESS 0x0040 /* normal depress yield */
-#define TH_MODE_POLLDEPRESS 0x0080 /* polled depress yield */
-#define TH_MODE_ISDEPRESSED (TH_MODE_DEPRESS | TH_MODE_POLLDEPRESS)
-
- integer_t sched_pri; /* scheduled (current) priority */
- integer_t priority; /* base priority */
- integer_t max_priority; /* max base priority */
- integer_t task_priority; /* copy of task base priority */
-
- integer_t promotions; /* level of promotion */
- integer_t pending_promoter_index;
+ sched_mode_t sched_mode; /* scheduling mode */
+ sched_mode_t saved_mode; /* saved mode during forced mode demotion */
+
+ unsigned int sched_flags; /* current flag bits */
+#define TH_SFLAG_FAIRSHARE_TRIPPED 0x0001 /* fairshare scheduling activated */
+#define TH_SFLAG_FAILSAFE 0x0002 /* fail-safe has tripped */
+#define TH_SFLAG_THROTTLED 0x0004 /* owner task in throttled state */
+#define TH_SFLAG_DEMOTED_MASK (TH_SFLAG_THROTTLED | TH_SFLAG_FAILSAFE | TH_SFLAG_FAIRSHARE_TRIPPED)
+
+#define TH_SFLAG_PROMOTED 0x0008 /* sched pri has been promoted */
+#define TH_SFLAG_ABORT 0x0010 /* abort interruptible waits */
+#define TH_SFLAG_ABORTSAFELY 0x0020 /* ... but only those at safe point */
+#define TH_SFLAG_ABORTED_MASK (TH_SFLAG_ABORT | TH_SFLAG_ABORTSAFELY)
+#define TH_SFLAG_DEPRESS 0x0040 /* normal depress yield */
+#define TH_SFLAG_POLLDEPRESS 0x0080 /* polled depress yield */
+#define TH_SFLAG_DEPRESSED_MASK (TH_SFLAG_DEPRESS | TH_SFLAG_POLLDEPRESS)
+#define TH_SFLAG_PRI_UPDATE 0x0100 /* Updating priority */
+#define TH_SFLAG_EAGERPREEMPT 0x0200 /* Any preemption of this thread should be treated as if AST_URGENT applied */
+#define TH_SFLAG_RW_PROMOTED 0x0400 /* sched pri has been promoted due to blocking with RW lock held */
+#define TH_SFLAG_PROMOTED_MASK (TH_SFLAG_PROMOTED | TH_SFLAG_RW_PROMOTED)
+
+#define TH_SFLAG_RW_PROMOTED_BIT (10) /* 0x400 */
+
+/*
+ * A thread can either be completely unthrottled, about to be throttled,
+ * throttled (TH_SFLAG_THROTTLED), or about to be unthrottled
+ */
+#define TH_SFLAG_PENDING_THROTTLE_DEMOTION 0x1000 /* Pending sched_mode demotion */
+#define TH_SFLAG_PENDING_THROTTLE_PROMOTION 0x2000 /* Pending sched_mode promition */
+#define TH_SFLAG_PENDING_THROTTLE_MASK (TH_SFLAG_PENDING_THROTTLE_DEMOTION | TH_SFLAG_PENDING_THROTTLE_PROMOTION)
+
+ int16_t sched_pri; /* scheduled (current) priority */
+ int16_t priority; /* base priority */
+ int16_t max_priority; /* max base priority */
+ int16_t task_priority; /* copy of task base priority */
+#if defined(CONFIG_SCHED_GRRR)
+#if 0
+ uint16_t grrr_deficit; /* fixed point (1/1000th quantum) fractional deficit */
+#endif
+#endif
+
+ int16_t promotions; /* level of promotion */
+ int16_t pending_promoter_index;
+ uint32_t ref_count; /* number of references to me */
void *pending_promoter[2];
- integer_t importance; /* task-relative importance */
+ uint32_t rwlock_count; /* Number of lck_rw_t locks held by thread */
- /* real-time parameters */
+ integer_t importance; /* task-relative importance */
+ /* Priority depression expiration */
+ integer_t depress_timer_active;
+ timer_call_data_t depress_timer;
+ /* real-time parameters */
struct { /* see mach/thread_policy.h */
uint32_t period;
uint32_t computation;
uint32_t constraint;
boolean_t preemptible;
-
uint64_t deadline;
} realtime;
+ uint32_t was_promoted_on_wakeup;
uint32_t current_quantum; /* duration of current quantum */
+ uint64_t last_run_time; /* time when thread was switched away from */
+ uint64_t last_quantum_refill_time; /* time when current_quantum was refilled after expiration */
/* Data used during setrun/dispatch */
timer_data_t system_timer; /* system mode timer */
- processor_set_t processor_set; /* assigned processor set */
processor_t bound_processor; /* bound to a processor? */
processor_t last_processor; /* processor last dispatched on */
- uint64_t last_switch; /* time of last context switch */
+ processor_t chosen_processor; /* Where we want to run this thread */
/* Fail-safe computation since last unblock or qualifying yield */
uint64_t computation_metered;
uint64_t computation_epoch;
- integer_t safe_mode; /* saved mode during fail-safe */
- natural_t safe_release; /* when to release fail-safe */
-
+ uint64_t safe_release; /* when to release fail-safe */
+
+ /* Call out from scheduler */
+ void (*sched_call)(
+ int type,
+ thread_t thread);
+#if defined(CONFIG_SCHED_PROTO)
+ uint32_t runqueue_generation; /* last time runqueue was drained */
+#endif
+
/* Statistics and timesharing calculations */
- natural_t sched_stamp; /* when priority was updated */
- natural_t cpu_usage; /* exp. decaying cpu usage [%cpu] */
- natural_t cpu_delta; /* cpu usage since last update */
- natural_t sched_usage; /* load-weighted cpu usage [sched] */
- natural_t sched_delta; /* weighted cpu usage since update */
- natural_t sleep_stamp; /* when entered TH_WAIT state */
+#if defined(CONFIG_SCHED_TRADITIONAL)
+ natural_t sched_stamp; /* last scheduler tick */
+ natural_t sched_usage; /* timesharing cpu usage [sched] */
+ natural_t pri_shift; /* usage -> priority from pset */
+ natural_t cpu_usage; /* instrumented cpu usage [%cpu] */
+ natural_t cpu_delta; /* accumulated cpu_usage delta */
+#endif
+ uint32_t c_switch; /* total context switches */
+ uint32_t p_switch; /* total processor switches */
+ uint32_t ps_switch; /* total pset switches */
/* Timing data structures */
- timer_data_t user_timer; /* user mode timer */
- timer_save_data_t system_timer_save; /* saved system timer value */
- timer_save_data_t user_timer_save; /* saved user timer value */
+ int precise_user_kernel_time; /* precise user/kernel enabled for this thread */
+ timer_data_t user_timer; /* user mode timer */
+ uint64_t user_timer_save; /* saved user timer value */
+ uint64_t system_timer_save; /* saved system timer value */
+ uint64_t vtimer_user_save; /* saved values for vtimers */
+ uint64_t vtimer_prof_save;
+ uint64_t vtimer_rlim_save;
/* Timed wait expiration */
- timer_call_data_t wait_timer;
- integer_t wait_timer_active;
- boolean_t wait_timer_is_set;
+ timer_call_data_t wait_timer;
+ integer_t wait_timer_active;
+ boolean_t wait_timer_is_set;
- /* Priority depression expiration */
- timer_call_data_t depress_timer;
- integer_t depress_timer_active;
+
+ /*
+ * Processor/cache affinity
+ * - affinity_threads links task threads with the same affinity set
+ */
+ affinity_set_t affinity_set;
+ queue_chain_t affinity_threads;
/* Various bits of stashed state */
union {
struct {
mach_msg_return_t state; /* receive state */
+ mach_port_seqno_t seqno; /* seqno of recvd message */
ipc_object_t object; /* object received on */
- mach_msg_header_t *msg; /* receive buffer pointer */
+ mach_vm_address_t msg_addr; /* receive buffer pointer */
mach_msg_size_t msize; /* max size for recvd msg */
mach_msg_option_t option; /* options for receive */
mach_msg_size_t slist_size; /* scatter list size */
+ mach_port_name_t receiver_name; /* the receive port name */
struct ipc_kmsg *kmsg; /* received message */
- mach_port_seqno_t seqno; /* seqno of recvd message */
mach_msg_continue_t continuation;
} receive;
struct {
} sema;
struct {
int option; /* switch option */
+ boolean_t reenable_workq_callback; /* on entry, callbacks were suspended */
} swtch;
int misc; /* catch-all for other state */
} saved;
+ /* Structure to save information about guard exception */
+ struct {
+ unsigned type; /* EXC_GUARD reason/type */
+ mach_exception_data_type_t code; /* Exception code */
+ mach_exception_data_type_t subcode; /* Exception sub-code */
+ } guard_exc_info;
+
+
/* IPC data structures */
- struct ipc_kmsg_queue ith_messages;
- mach_port_t ith_mig_reply; /* reply port for mig */
+#if IMPORTANCE_INHERITANCE
+ natural_t ith_assertions; /* assertions pending drop */
+#endif
+ struct ipc_kmsg_queue ith_messages; /* messages to reap */
mach_port_t ith_rpc_reply; /* reply port for kernel RPCs */
/* Ast/Halt data structures */
- vm_offset_t recover; /* page fault recover(copyin/out) */
- int ref_count; /* number of references to me */
+ vm_offset_t recover; /* page fault recover(copyin/out) */
- /* Processor set info */
- queue_chain_t pset_threads; /* list of all threads in pset */
-#if MACH_HOST
- boolean_t may_assign; /* may assignment change? */
- boolean_t assign_active; /* waiting for may_assign */
-#endif /* MACH_HOST */
+ queue_chain_t threads; /* global list of all threads */
/* Activation */
queue_chain_t task_threads;
/*** Machine-dependent state ***/
- struct MachineThrAct mact;
+ struct machine_thread machine;
/* Task membership */
struct task *task;
vm_map_t map;
- decl_mutex_data(,lock)
- int act_ref_count;
-
- /* Associated shuttle */
- struct thread *thread;
-
- /*
- * Next higher and next lower activation on
- * the thread's activation stack.
- */
- struct thread *higher, *lower;
-
- /* Kernel holds on this thread */
- int suspend_count;
+ decl_lck_mtx_data(,mutex)
- /* User level suspensions */
- int user_stop_count;
/* Pending thread ast(s) */
ast_t ast;
- /* Miscellaneous bits guarded by lock mutex */
+ /* Miscellaneous bits guarded by mutex */
uint32_t
- /* Indicates that the thread has not been terminated */
- active:1,
-
- /* Indicates that the thread has been started after creation */
- started:1,
- :0;
+ active:1, /* Thread is active and has not been terminated */
+ started:1, /* Thread has been started after creation */
+ static_param:1, /* Disallow policy parameter changes */
+ :0;
/* Return Handers */
struct ReturnHandler {
struct ReturnHandler *next;
void (*handler)(
struct ReturnHandler *rh,
- struct thread *act);
+ struct thread *thread);
} *handlers, special_handler;
/* Ports associated with this thread */
struct ipc_port *ith_self; /* not a right, doesn't hold ref */
struct ipc_port *ith_sself; /* a send right */
- struct exception_action exc_actions[EXC_TYPES_COUNT];
-
- /* Owned ulocks (a lock set element) */
- queue_head_t held_ulocks;
-
-#if MACH_PROF
- /* Profiling */
- boolean_t profiled;
- boolean_t profiled_own;
- struct prof_data *profil_buffer;
-#endif /* MACH_PROF */
+ struct exception_action *exc_actions;
#ifdef MACH_BSD
void *uthread;
#endif
-/* BEGIN TRACING/DEBUG */
-
-#if MACH_LOCK_MON
- unsigned lock_stack; /* number of locks held */
-#endif /* MACH_LOCK_MON */
+#if CONFIG_DTRACE
+ uint32_t t_dtrace_flags; /* DTrace thread states */
+#define TH_DTRACE_EXECSUCCESS 0x01
+ uint32_t t_dtrace_predcache;/* DTrace per thread predicate value hint */
+ int64_t t_dtrace_tracing; /* Thread time under dtrace_probe() */
+ int64_t t_dtrace_vtime;
+#endif
-#if ETAP_EVENT_MONITOR
- int etap_reason; /* real reason why we blocked */
- boolean_t etap_trace; /* ETAP trace status */
-#endif /* ETAP_EVENT_MONITOR */
+ clock_sec_t t_page_creation_time;
+ uint32_t t_page_creation_count;
+
+#define T_CHUD_MARKED 0x01 /* this thread is marked by CHUD */
+#define T_IN_CHUD 0x02 /* this thread is already in a CHUD handler */
+#define THREAD_PMC_FLAG 0x04 /* Bit in "t_chud" signifying PMC interest */
+#define T_AST_CALLSTACK 0x08 /* Thread scheduled to dump a
+ * callstack on its next
+ * AST */
+#define T_AST_NAME 0x10 /* Thread scheduled to dump
+ * its name on its next
+ * AST */
+#define T_NAME_DONE 0x20 /* Thread has previously
+ * recorded its name */
+#define T_KPC_ALLOC 0x40 /* Thread needs a kpc_buf */
+
+ uint32_t t_chud; /* CHUD flags, used for Shark */
+ uint32_t chud_c_switch; /* last dispatch detection */
+
+ integer_t mutex_count; /* total count of locks held */
+
+#ifdef KPC
+ /* accumulated performance counters for this thread */
+ uint64_t *kpc_buf;
+#endif
-#if MACH_LDEBUG
- /*
- * Debugging: track acquired mutexes and locks.
- * Because a thread can block while holding such
- * synchronizers, we think of the thread as
- * "owning" them.
- */
-#define MUTEX_STACK_DEPTH 20
-#define LOCK_STACK_DEPTH 20
- mutex_t *mutex_stack[MUTEX_STACK_DEPTH];
- lock_t *lock_stack[LOCK_STACK_DEPTH];
- unsigned int mutex_stack_index;
- unsigned int lock_stack_index;
- unsigned mutex_count; /* XXX to be deleted XXX */
-#endif /* MACH_LDEBUG */
-/* END TRACING/DEBUG */
+#ifdef KPERF
+ /* count of how many times a thread has been sampled since it was last scheduled */
+ uint64_t kperf_pet_cnt;
+#endif
+ uint64_t thread_id; /*system wide unique thread-id*/
+
+ /* Statistics accumulated per-thread and aggregated per-task */
+ uint32_t syscalls_unix;
+ uint32_t syscalls_mach;
+ ledger_t t_ledger;
+ ledger_t t_threadledger; /* per thread ledger */
+
+ /* policy is protected by the task lock */
+ struct task_requested_policy requested_policy;
+ struct task_effective_policy effective_policy;
+ struct task_pended_policy pended_policy;
+
+ int iotier_override; /* atomic operations to set, cleared on ret to user */
+
+
+ integer_t saved_importance; /* saved task-relative importance */
+
+ uint32_t thread_callout_interrupt_wakeups;
+ uint32_t thread_callout_platform_idle_wakeups;
+ uint32_t thread_timer_wakeups_bin_1;
+ uint32_t thread_timer_wakeups_bin_2;
+ uint16_t thread_tag;
+ uint16_t callout_woken_from_icontext:1,
+ callout_woken_from_platform_idle:1,
+ callout_woke_thread:1,
+ thread_bitfield_unused:13;
+ /* Kernel holds on this thread */
+ int16_t suspend_count;
+ /* User level suspensions */
+ int16_t user_stop_count;
};
#define ith_state saved.receive.state
#define ith_object saved.receive.object
-#define ith_msg saved.receive.msg
+#define ith_msg_addr saved.receive.msg_addr
#define ith_msize saved.receive.msize
#define ith_option saved.receive.option
#define ith_scatter_list_size saved.receive.slist_size
+#define ith_receiver_name saved.receive.receiver_name
#define ith_continuation saved.receive.continuation
#define ith_kmsg saved.receive.kmsg
#define ith_seqno saved.receive.seqno
extern void thread_init(void);
-extern void thread_reaper_init(void);
+extern void thread_daemon_init(void);
-extern void thread_reference(
- thread_t thread);
+#define thread_reference_internal(thread) \
+ (void)hw_atomic_add(&(thread)->ref_count, 1)
+
+#define thread_deallocate_internal(thread) \
+ hw_atomic_sub(&(thread)->ref_count, 1)
+
+#define thread_reference(thread) \
+MACRO_BEGIN \
+ if ((thread) != THREAD_NULL) \
+ thread_reference_internal(thread); \
+MACRO_END
extern void thread_deallocate(
thread_t thread);
extern void thread_terminate_self(void);
+extern kern_return_t thread_terminate_internal(
+ thread_t thread);
+
+extern void thread_start_internal(
+ thread_t thread) __attribute__ ((noinline));
+
+extern void thread_terminate_enqueue(
+ thread_t thread);
+
+extern void thread_stack_enqueue(
+ thread_t thread);
+
extern void thread_hold(
- thread_act_t thread);
+ thread_t thread);
extern void thread_release(
- thread_act_t thread);
+ thread_t thread);
-#define thread_lock_init(th) simple_lock_init(&(th)->sched_lock, ETAP_THREAD_LOCK)
+
+#define thread_lock_init(th) simple_lock_init(&(th)->sched_lock, 0)
#define thread_lock(th) simple_lock(&(th)->sched_lock)
#define thread_unlock(th) simple_unlock(&(th)->sched_lock)
-#define thread_lock_try(th) simple_lock_try(&(th)->sched_lock)
-
-#define thread_should_halt_fast(thread) \
- (!(thread)->top_act || !(thread)->top_act->active)
-#define thread_reference_locked(thread) ((thread)->ref_count++)
+#define wake_lock_init(th) simple_lock_init(&(th)->wake_lock, 0)
+#define wake_lock(th) simple_lock(&(th)->wake_lock)
+#define wake_unlock(th) simple_unlock(&(th)->wake_lock)
-#define wake_lock_init(th) \
- simple_lock_init(&(th)->wake_lock, ETAP_THREAD_WAKE)
-#define wake_lock(th) simple_lock(&(th)->wake_lock)
-#define wake_unlock(th) simple_unlock(&(th)->wake_lock)
-#define wake_lock_try(th) simple_lock_try(&(th)->wake_lock)
+#define thread_should_halt_fast(thread) (!(thread)->active)
-extern vm_offset_t stack_alloc(
- thread_t thread,
- void (*start)(thread_t));
+extern void stack_alloc(
+ thread_t thread);
-extern boolean_t stack_alloc_try(
- thread_t thread,
- void (*start)(thread_t));
+extern void stack_handoff(
+ thread_t from,
+ thread_t to);
extern void stack_free(
thread_t thread);
-extern void stack_free_stack(
- vm_offset_t stack);
+extern void stack_free_reserved(
+ thread_t thread);
+
+extern boolean_t stack_alloc_try(
+ thread_t thread);
extern void stack_collect(void);
-extern kern_return_t thread_setstatus(
- thread_act_t thread,
- int flavor,
- thread_state_t tstate,
- mach_msg_type_number_t count);
+extern void stack_init(void);
-extern kern_return_t thread_getstatus(
- thread_act_t thread,
- int flavor,
- thread_state_t tstate,
- mach_msg_type_number_t *count);
-extern kern_return_t thread_info_shuttle(
- thread_act_t thread,
+extern kern_return_t thread_info_internal(
+ thread_t thread,
thread_flavor_t flavor,
thread_info_t thread_info_out,
mach_msg_type_number_t *thread_info_count);
integer_t priority,
integer_t max_priority);
-extern kern_return_t thread_get_special_port(
- thread_act_t thread,
- int which,
- ipc_port_t *port);
-
-extern kern_return_t thread_set_special_port(
- thread_act_t thread,
- int which,
- ipc_port_t port);
-
-extern thread_act_t switch_act(
- thread_act_t act);
+extern void thread_policy_reset(
+ thread_t thread);
-extern thread_t kernel_thread_create(
- void (*start)(void),
- integer_t priority);
+extern kern_return_t kernel_thread_create(
+ thread_continue_t continuation,
+ void *parameter,
+ integer_t priority,
+ thread_t *new_thread);
-extern thread_t kernel_thread_with_priority(
- void (*start)(void),
- integer_t priority);
+extern kern_return_t kernel_thread_start_priority(
+ thread_continue_t continuation,
+ void *parameter,
+ integer_t priority,
+ thread_t *new_thread);
extern void machine_stack_attach(
thread_t thread,
- vm_offset_t stack,
- void (*start)(thread_t));
+ vm_offset_t stack);
extern vm_offset_t machine_stack_detach(
thread_t thread);
extern void machine_load_context(
thread_t thread);
-extern void machine_switch_act(
- thread_t thread,
- thread_act_t old,
- thread_act_t new);
+extern kern_return_t machine_thread_state_initialize(
+ thread_t thread);
extern kern_return_t machine_thread_set_state(
- thread_act_t act,
+ thread_t thread,
thread_flavor_t flavor,
thread_state_t state,
mach_msg_type_number_t count);
extern kern_return_t machine_thread_get_state(
- thread_act_t act,
+ thread_t thread,
thread_flavor_t flavor,
thread_state_t state,
mach_msg_type_number_t *count);
extern kern_return_t machine_thread_dup(
- thread_act_t self,
- thread_act_t target);
+ thread_t self,
+ thread_t target);
extern void machine_thread_init(void);
extern kern_return_t machine_thread_create(
thread_t thread,
task_t task);
+extern void machine_thread_switch_addrmode(
+ thread_t thread);
extern void machine_thread_destroy(
thread_t thread);
-extern void machine_thread_set_current(
- thread_t thread);
+extern void machine_set_current_thread(
+ thread_t thread);
+
+extern kern_return_t machine_thread_get_kern_state(
+ thread_t thread,
+ thread_flavor_t flavor,
+ thread_state_t tstate,
+ mach_msg_type_number_t *count);
-extern void machine_thread_terminate_self(void);
+extern kern_return_t machine_thread_inherit_taskwide(
+ thread_t thread,
+ task_t parent_task);
/*
* XXX Funnel locks XXX
struct funnel_lock {
int fnl_type; /* funnel type */
- mutex_t *fnl_mutex; /* underlying mutex for the funnel */
+ lck_mtx_t *fnl_mutex; /* underlying mutex for the funnel */
void * fnl_mtxholder; /* thread (last)holdng mutex */
void * fnl_mtxrelease; /* thread (last)releasing mutex */
- mutex_t *fnl_oldmutex; /* Mutex before collapsing split funnel */
+ lck_mtx_t *fnl_oldmutex; /* Mutex before collapsing split funnel */
};
-typedef struct funnel_lock funnel_t;
-
-extern void funnel_lock(
- funnel_t *lock);
-
-extern void funnel_unlock(
- funnel_t *lock);
-
typedef struct ReturnHandler ReturnHandler;
-#define act_lock(act) mutex_lock(&(act)->lock)
-#define act_lock_try(act) mutex_try(&(act)->lock)
-#define act_unlock(act) mutex_unlock(&(act)->lock)
+#define thread_mtx_lock(thread) lck_mtx_lock(&(thread)->mutex)
+#define thread_mtx_try(thread) lck_mtx_try_lock(&(thread)->mutex)
+#define thread_mtx_unlock(thread) lck_mtx_unlock(&(thread)->mutex)
-#define act_reference_locked(act) \
-MACRO_BEGIN \
- (act)->act_ref_count++; \
-MACRO_END
+extern void act_execute_returnhandlers(void);
-#define act_deallocate_locked(act) \
-MACRO_BEGIN \
- if (--(act)->act_ref_count == 0) \
- panic("act_deallocate_locked"); \
-MACRO_END
+extern void install_special_handler(
+ thread_t thread);
-extern void act_reference(
- thread_act_t act);
+extern void special_handler(
+ ReturnHandler *rh,
+ thread_t thread);
-extern void act_deallocate(
- thread_act_t act);
+void act_machine_sv_free(thread_t, int);
-extern void act_attach(
- thread_act_t act,
- thread_t thread);
+vm_offset_t min_valid_stack_address(void);
+vm_offset_t max_valid_stack_address(void);
-extern void act_detach(
- thread_act_t act);
+extern void funnel_lock(
+ struct funnel_lock *lock);
-extern thread_t act_lock_thread(
- thread_act_t act);
+extern void funnel_unlock(
+ struct funnel_lock *lock);
-extern void act_unlock_thread(
- thread_act_t act);
-extern thread_act_t thread_lock_act(
- thread_t thread);
+static inline uint16_t thread_set_tag_internal(thread_t thread, uint16_t tag) {
+ return __sync_fetch_and_or(&thread->thread_tag, tag);
+}
-extern void thread_unlock_act(
- thread_t thread);
+static inline uint16_t thread_get_tag_internal(thread_t thread) {
+ return thread->thread_tag;
+}
-extern void act_execute_returnhandlers(void);
+#else /* MACH_KERNEL_PRIVATE */
-extern void install_special_handler(
- thread_act_t thread);
+__BEGIN_DECLS
-extern void special_handler(
- ReturnHandler *rh,
- thread_act_t act);
+extern thread_t current_thread(void);
-#else /* MACH_KERNEL_PRIVATE */
+extern void thread_reference(
+ thread_t thread);
-typedef struct funnel_lock funnel_t;
+extern void thread_deallocate(
+ thread_t thread);
-extern boolean_t thread_should_halt(
- thread_t thread);
+__END_DECLS
-extern void act_reference(
- thread_act_t act);
+#endif /* MACH_KERNEL_PRIVATE */
-extern void act_deallocate(
- thread_act_t act);
+#ifdef KERNEL_PRIVATE
-#endif /* MACH_KERNEL_PRIVATE */
+__BEGIN_DECLS
-extern thread_t kernel_thread(
- task_t task,
- void (*start)(void));
-extern void thread_set_cont_arg(
- int arg);
+extern uint64_t thread_tid(
+ thread_t thread);
-extern int thread_get_cont_arg(void);
+extern uint64_t thread_dispatchqaddr(
+ thread_t thread);
-/* JMM - These are only temporary */
-extern boolean_t is_thread_running(thread_act_t); /* True is TH_RUN */
-extern boolean_t is_thread_idle(thread_t); /* True is TH_IDLE */
-extern kern_return_t get_thread_waitresult(thread_t);
+__END_DECLS
-typedef void (thread_apc_handler_t)(thread_act_t);
+#endif /* KERNEL_PRIVATE */
-extern kern_return_t thread_apc_set(thread_act_t, thread_apc_handler_t);
-extern kern_return_t thread_apc_clear(thread_act_t, thread_apc_handler_t);
+__BEGIN_DECLS
-extern vm_map_t swap_act_map(thread_act_t, vm_map_t);
+#ifdef XNU_KERNEL_PRIVATE
-extern void *get_bsdthread_info(thread_act_t);
-extern void set_bsdthread_info(thread_act_t, void *);
-extern task_t get_threadtask(thread_act_t);
+/*
+ * Thread tags; for easy identification.
+ */
+#define THREAD_TAG_MAINTHREAD 0x1
+#define THREAD_TAG_CALLOUT 0x2
+#define THREAD_TAG_IOWORKLOOP 0x4
-#endif /* __APPLE_API_PRIVATE */
+uint16_t thread_set_tag(thread_t, uint16_t);
+uint16_t thread_get_tag(thread_t);
-#ifdef __APPLE_API_UNSTABLE
-#if !defined(MACH_KERNEL_PRIVATE)
+extern kern_return_t thread_state_initialize(
+ thread_t thread);
-extern thread_act_t current_act(void);
+extern kern_return_t thread_setstatus(
+ thread_t thread,
+ int flavor,
+ thread_state_t tstate,
+ mach_msg_type_number_t count);
-#endif /* MACH_KERNEL_PRIVATE */
+extern kern_return_t thread_getstatus(
+ thread_t thread,
+ int flavor,
+ thread_state_t tstate,
+ mach_msg_type_number_t *count);
-#endif /* __APPLE_API_UNSTABLE */
+extern kern_return_t thread_create_workq(
+ task_t task,
+ thread_continue_t thread_return,
+ thread_t *new_thread);
-#ifdef __APPLE_API_EVOLVING
+extern void thread_yield_internal(
+ mach_msg_timeout_t interval);
/*
- * XXX Funnel locks XXX
+ * Thread-private CPU limits: apply a private CPU limit to this thread only. Available actions are:
+ *
+ * 1) Block. Prevent CPU consumption of the thread from exceeding the limit.
+ * 2) Exception. Generate a resource consumption exception when the limit is exceeded.
+ * 3) Disable. Remove any existing CPU limit.
*/
+#define THREAD_CPULIMIT_BLOCK 0x1
+#define THREAD_CPULIMIT_EXCEPTION 0x2
+#define THREAD_CPULIMIT_DISABLE 0x3
+
+struct _thread_ledger_indices {
+ int cpu_time;
+};
+
+extern struct _thread_ledger_indices thread_ledgers;
+
+extern int thread_get_cpulimit(int *action, uint8_t *percentage, uint64_t *interval_ns);
+extern int thread_set_cpulimit(int action, uint8_t percentage, uint64_t interval_ns);
+
+typedef struct funnel_lock funnel_t;
#define THR_FUNNEL_NULL (funnel_t *)0
extern funnel_t *funnel_alloc(
int type);
+extern void funnel_free(
+ funnel_t *lock);
+
extern funnel_t *thread_funnel_get(void);
extern boolean_t thread_funnel_set(
funnel_t *lock,
boolean_t funneled);
-extern boolean_t thread_funnel_merge(
- funnel_t *lock,
- funnel_t *other);
+extern void thread_read_times(
+ thread_t thread,
+ time_value_t *user_time,
+ time_value_t *system_time);
-#endif /* __APPLE_API_EVOLVING */
+extern void thread_setuserstack(
+ thread_t thread,
+ mach_vm_offset_t user_stack);
-#ifdef __APPLE_API_PRIVATE
+extern uint64_t thread_adjuserstack(
+ thread_t thread,
+ int adjust);
-extern boolean_t refunnel_hint(
+extern void thread_setentrypoint(
thread_t thread,
- wait_result_t wresult);
+ mach_vm_offset_t entry);
+
+extern kern_return_t thread_setsinglestep(
+ thread_t thread,
+ int on);
+
+extern kern_return_t thread_userstack(
+ thread_t,
+ int,
+ thread_state_t,
+ unsigned int,
+ mach_vm_offset_t *,
+ int *);
+
+extern kern_return_t thread_entrypoint(
+ thread_t,
+ int,
+ thread_state_t,
+ unsigned int,
+ mach_vm_offset_t *);
+
+extern kern_return_t thread_userstackdefault(
+ thread_t,
+ mach_vm_offset_t *);
+
+extern kern_return_t thread_wire_internal(
+ host_priv_t host_priv,
+ thread_t thread,
+ boolean_t wired,
+ boolean_t *prev_state);
+
+extern kern_return_t thread_dup(thread_t);
+
+typedef void (*sched_call_t)(
+ int type,
+ thread_t thread);
+
+#define SCHED_CALL_BLOCK 0x1
+#define SCHED_CALL_UNBLOCK 0x2
-/* For use by CHUD */
-vm_offset_t min_valid_stack_address(void);
-vm_offset_t max_valid_stack_address(void);
+extern void thread_sched_call(
+ thread_t thread,
+ sched_call_t call);
-#endif /* __APPLE_API_PRIVATE */
+extern void thread_static_param(
+ thread_t thread,
+ boolean_t state);
+
+extern kern_return_t thread_policy_set_internal(
+ thread_t thread,
+ thread_policy_flavor_t flavor,
+ thread_policy_t policy_info,
+ mach_msg_type_number_t count);
+
+
+extern task_t get_threadtask(thread_t);
+#define thread_is_64bit(thd) \
+ task_has_64BitAddr(get_threadtask(thd))
+
+
+extern void *get_bsdthread_info(thread_t);
+extern void set_bsdthread_info(thread_t, void *);
+extern void *uthread_alloc(task_t, thread_t, int);
+extern void uthread_cleanup(task_t, void *, void *);
+extern void uthread_zone_free(void *);
+extern void uthread_cred_free(void *);
+
+extern boolean_t thread_should_halt(
+ thread_t thread);
+
+extern boolean_t thread_should_abort(
+ thread_t);
+
+extern int is_64signalregset(void);
+
+void act_set_apc(thread_t);
+void act_set_kperf(thread_t);
+
+extern uint32_t dtrace_get_thread_predcache(thread_t);
+extern int64_t dtrace_get_thread_vtime(thread_t);
+extern int64_t dtrace_get_thread_tracing(thread_t);
+extern boolean_t dtrace_get_thread_reentering(thread_t);
+extern vm_offset_t dtrace_get_kernel_stack(thread_t);
+extern void dtrace_set_thread_predcache(thread_t, uint32_t);
+extern void dtrace_set_thread_vtime(thread_t, int64_t);
+extern void dtrace_set_thread_tracing(thread_t, int64_t);
+extern void dtrace_set_thread_reentering(thread_t, boolean_t);
+extern vm_offset_t dtrace_set_thread_recover(thread_t, vm_offset_t);
+extern void dtrace_thread_bootstrap(void);
+extern void dtrace_thread_didexec(thread_t);
+
+extern int64_t dtrace_calc_thread_recent_vtime(thread_t);
+
+
+extern kern_return_t thread_set_wq_state32(
+ thread_t thread,
+ thread_state_t tstate);
+
+extern kern_return_t thread_set_wq_state64(
+ thread_t thread,
+ thread_state_t tstate);
+
+extern vm_offset_t kernel_stack_mask;
+extern vm_offset_t kernel_stack_size;
+extern vm_offset_t kernel_stack_depth_max;
+
+void guard_ast(thread_t thread);
+extern void fd_guard_ast(thread_t thread);
+extern void mach_port_guard_ast(thread_t thread);
+extern void thread_guard_violation(thread_t thread, unsigned type);
+
+#endif /* XNU_KERNEL_PRIVATE */
+
+/*! @function kernel_thread_start
+ @abstract Create a kernel thread.
+ @discussion This function takes three input parameters, namely reference to the function that the thread should execute, caller specified data and a reference which is used to return the newly created kernel thread. The function returns KERN_SUCCESS on success or an appropriate kernel code type indicating the error. It may be noted that the caller is responsible for explicitly releasing the reference to the created thread when no longer needed. This should be done by calling thread_deallocate(new_thread).
+ @param continuation A C-function pointer where the thread will begin execution.
+ @param parameter Caller specified data to be passed to the new thread.
+ @param new_thread Reference to the new thread is returned in this parameter.
+ @result Returns KERN_SUCCESS on success or an appropriate kernel code type.
+*/
+
+extern kern_return_t kernel_thread_start(
+ thread_continue_t continuation,
+ void *parameter,
+ thread_t *new_thread);
+#ifdef KERNEL_PRIVATE
+void thread_set_eager_preempt(thread_t thread);
+void thread_clear_eager_preempt(thread_t thread);
+extern ipc_port_t convert_thread_to_port(thread_t);
+#endif /* KERNEL_PRIVATE */
+
+__END_DECLS
#endif /* _KERN_THREAD_H_ */
projects / apple / xnu.git / blobdiff