#include <kern/exc_guard.h>
#include <kern/telemetry.h>
#include <kern/policy_internal.h>
+#include <kern/turnstile.h>
#include <corpses/task_corpse.h>
#if KPC
decl_simple_lock_data(static,thread_terminate_lock)
static queue_head_t thread_terminate_queue;
+static queue_head_t thread_deallocate_queue;
+
+static queue_head_t turnstile_deallocate_queue;
+
static queue_head_t crashed_threads_queue;
+static queue_head_t workq_deallocate_queue;
+
decl_simple_lock_data(static,thread_exception_lock)
static queue_head_t thread_exception_queue;
};
static struct thread thread_template, init_thread;
-
-static void sched_call_null(
- int type,
- thread_t thread);
+static void thread_deallocate_enqueue(thread_t thread);
+static void thread_deallocate_complete(thread_t thread);
#ifdef MACH_BSD
extern void proc_exit(void *);
extern uint64_t get_dispatchqueue_offset_from_proc(void *);
extern uint64_t get_return_to_kernel_offset_from_proc(void *p);
extern int proc_selfpid(void);
+extern void proc_name(int, char*, int);
extern char * proc_name_address(void *p);
#endif /* MACH_BSD */
void jetsam_on_ledger_cpulimit_exceeded(void);
#endif
+extern int task_thread_soft_limit;
+extern int exc_via_corpse_forking;
+
+#if DEVELOPMENT || DEBUG
+extern int exc_resource_threads_enabled;
+#endif /* DEVELOPMENT || DEBUG */
+
/*
* Level (in terms of percentage of the limit) at which the CPU usage monitor triggers telemetry.
*
int cpumon_ustackshots_trigger_pct; /* Percentage. Level at which we start gathering telemetry. */
void __attribute__((noinline)) SENDING_NOTIFICATION__THIS_THREAD_IS_CONSUMING_TOO_MUCH_CPU(void);
+#if DEVELOPMENT || DEBUG
+void __attribute__((noinline)) SENDING_NOTIFICATION__TASK_HAS_TOO_MANY_THREADS(task_t, int);
+#endif /* DEVELOPMENT || DEBUG */
/*
* The smallest interval over which we support limiting CPU consumption is 1ms
thread_template.max_priority = 0;
thread_template.task_priority = 0;
thread_template.promotions = 0;
- thread_template.pending_promoter_index = 0;
- thread_template.pending_promoter[0] = NULL;
- thread_template.pending_promoter[1] = NULL;
thread_template.rwlock_count = 0;
+ thread_template.waiting_for_mutex = NULL;
thread_template.realtime.deadline = UINT64_MAX;
thread_template.bound_processor = PROCESSOR_NULL;
thread_template.last_processor = PROCESSOR_NULL;
- thread_template.sched_call = sched_call_null;
+ thread_template.sched_call = NULL;
timer_init(&thread_template.user_timer);
timer_init(&thread_template.system_timer);
timer_init(&thread_template.ptime);
+ timer_init(&thread_template.runnable_timer);
thread_template.user_timer_save = 0;
thread_template.system_timer_save = 0;
thread_template.vtimer_user_save = 0;
thread_template.recover = (vm_offset_t)NULL;
thread_template.map = VM_MAP_NULL;
+#if DEVELOPMENT || DEBUG
+ thread_template.pmap_footprint_suspended = FALSE;
+#endif /* DEVELOPMENT || DEBUG */
#if CONFIG_DTRACE
thread_template.t_dtrace_predcache = 0;
{
thread_t thread = current_thread();
task_t task;
- spl_t s;
int threadcnt;
pal_thread_terminate_self(thread);
thread_mtx_unlock(thread);
- s = splsched();
- thread_lock(thread);
-
- /*
- * Cancel priority depression, wait for concurrent expirations
- * on other processors.
- */
- if (thread->sched_flags & TH_SFLAG_DEPRESSED_MASK) {
- thread->sched_flags &= ~TH_SFLAG_DEPRESSED_MASK;
-
- /* If our priority was low because of a depressed yield, restore it in case we block below */
- thread_recompute_sched_pri(thread, FALSE);
-
- if (timer_call_cancel(&thread->depress_timer))
- thread->depress_timer_active--;
- }
-
- while (thread->depress_timer_active > 0) {
- thread_unlock(thread);
- splx(s);
-
- delay(1);
+ thread_sched_call(thread, NULL);
- s = splsched();
- thread_lock(thread);
- }
+ spl_t s = splsched();
+ thread_lock(thread);
- thread_sched_call(thread, NULL);
+ thread_depress_abort_locked(thread);
thread_unlock(thread);
splx(s);
s = splsched();
thread_lock(thread);
+ /*
+ * Ensure that the depress timer is no longer enqueued,
+ * so the timer (stored in the thread) can be safely deallocated
+ *
+ * TODO: build timer_call_cancel_wait
+ */
+
+ assert((thread->sched_flags & TH_SFLAG_DEPRESSED_MASK) == 0);
+
+ uint32_t delay_us = 1;
+
+ while (thread->depress_timer_active > 0) {
+ thread_unlock(thread);
+ splx(s);
+
+ delay(delay_us++);
+
+ if (delay_us > USEC_PER_SEC)
+ panic("depress timer failed to inactivate!"
+ "thread: %p depress_timer_active: %d",
+ thread, thread->depress_timer_active);
+
+ s = splsched();
+ thread_lock(thread);
+ }
+
/*
* Cancel wait timer, and wait for
* concurrent expirations.
thread->wait_timer_active--;
}
+ delay_us = 1;
+
while (thread->wait_timer_active > 0) {
thread_unlock(thread);
splx(s);
- delay(1);
+ delay(delay_us++);
+
+ if (delay_us > USEC_PER_SEC)
+ panic("wait timer failed to inactivate!"
+ "thread: %p wait_timer_active: %d",
+ thread, thread->wait_timer_active);
s = splsched();
thread_lock(thread);
*/
thread->state |= TH_TERMINATE;
thread_mark_wait_locked(thread, THREAD_UNINT);
+
+ assert((thread->sched_flags & TH_SFLAG_WAITQ_PROMOTED) == 0);
+ assert((thread->sched_flags & TH_SFLAG_RW_PROMOTED) == 0);
+ assert((thread->sched_flags & TH_SFLAG_EXEC_PROMOTED) == 0);
assert((thread->sched_flags & TH_SFLAG_PROMOTED) == 0);
assert(thread->promotions == 0);
- assert(!(thread->sched_flags & TH_SFLAG_WAITQ_PROMOTED));
+ assert(thread->was_promoted_on_wakeup == 0);
+ assert(thread->waiting_for_mutex == NULL);
assert(thread->rwlock_count == 0);
+
thread_unlock(thread);
/* splsched */
/*NOTREACHED*/
}
-/* Drop a thread refcount that definitely isn't the last one. */
+/* Drop a thread refcount safely without triggering a zfree */
void
thread_deallocate_safe(thread_t thread)
{
+ __assert_only uint32_t th_ref_count;
+
+ if (thread == THREAD_NULL)
+ return;
+
assert_thread_magic(thread);
- uint32_t old_refcount = atomic_fetch_sub_explicit(&thread->ref_count, 1, memory_order_release);
+ if (__probable(atomic_fetch_sub_explicit(&thread->ref_count, 1,
+ memory_order_release) - 1 > 0)) {
+ return;
+ }
+
+ th_ref_count = atomic_load_explicit(&thread->ref_count, memory_order_acquire);
+ assert(th_ref_count == 0);
- if (__improbable(old_refcount <= 1))
- panic("bad thread refcount: %d", old_refcount);
+ /* enqueue the thread for thread deallocate deamon to call thread_deallocate_complete */
+ thread_deallocate_enqueue(thread);
}
void
thread_deallocate(
thread_t thread)
{
- task_t task;
__assert_only uint32_t th_ref_count;
if (thread == THREAD_NULL)
th_ref_count = atomic_load_explicit(&thread->ref_count, memory_order_acquire);
assert(th_ref_count == 0);
+ thread_deallocate_complete(thread);
+}
+
+void
+thread_deallocate_complete(
+ thread_t thread)
+{
+ task_t task;
+
+ assert_thread_magic(thread);
+
+ assert(thread->ref_count == 0);
+
assert(thread_owned_workloops_count(thread) == 0);
if (!(thread->state & TH_TERMINATE2))
assert(thread->runq == PROCESSOR_NULL);
- assert(thread->user_promotions == 0);
-
#if KPC
kpc_thread_destroy(thread);
#endif
if (thread->t_threadledger)
ledger_dereference(thread->t_threadledger);
+ assert(thread->turnstile != TURNSTILE_NULL);
+ if (thread->turnstile)
+ turnstile_deallocate(thread->turnstile);
+
if (IPC_VOUCHER_NULL != thread->ith_voucher)
ipc_voucher_release(thread->ith_voucher);
thread_t dst_thread,
thread_t src_thread)
{
- dst_thread->thread_tag = src_thread->thread_tag;
dst_thread->c_switch = src_thread->c_switch;
dst_thread->p_switch = src_thread->p_switch;
dst_thread->ps_switch = src_thread->ps_switch;
dst_thread->user_timer_save = src_thread->user_timer_save;
dst_thread->system_timer = src_thread->system_timer;
dst_thread->system_timer_save = src_thread->system_timer_save;
+ dst_thread->runnable_timer = src_thread->runnable_timer;
dst_thread->vtimer_user_save = src_thread->vtimer_user_save;
dst_thread->vtimer_prof_save = src_thread->vtimer_prof_save;
dst_thread->vtimer_rlim_save = src_thread->vtimer_rlim_save;
(void)splsched();
simple_lock(&thread_terminate_lock);
+thread_terminate_start:
while ((thread = qe_dequeue_head(&thread_terminate_queue, struct thread, runq_links)) != THREAD_NULL) {
assert_thread_magic(thread);
task_lock(task);
task->total_user_time += timer_grab(&thread->user_timer);
task->total_ptime += timer_grab(&thread->ptime);
+ task->total_runnable_time += timer_grab(&thread->runnable_timer);
if (thread->precise_user_kernel_time) {
task->total_system_time += timer_grab(&thread->system_timer);
} else {
simple_lock(&thread_terminate_lock);
}
+ while ((thread = qe_dequeue_head(&thread_deallocate_queue, struct thread, runq_links)) != THREAD_NULL) {
+ assert_thread_magic(thread);
+
+ simple_unlock(&thread_terminate_lock);
+ (void)spllo();
+
+ thread_deallocate_complete(thread);
+
+ (void)splsched();
+ simple_lock(&thread_terminate_lock);
+ }
+
+ struct turnstile *turnstile;
+ while ((turnstile = qe_dequeue_head(&turnstile_deallocate_queue, struct turnstile, ts_deallocate_link)) != TURNSTILE_NULL) {
+
+ simple_unlock(&thread_terminate_lock);
+ (void)spllo();
+
+ turnstile_destroy(turnstile);
+
+ (void)splsched();
+ simple_lock(&thread_terminate_lock);
+ }
+
+ queue_entry_t qe;
+
+ /*
+ * see workq_deallocate_enqueue: struct workqueue is opaque to thread.c and
+ * we just link pieces of memory here
+ */
+ while ((qe = dequeue_head(&workq_deallocate_queue))) {
+ simple_unlock(&thread_terminate_lock);
+ (void)spllo();
+
+ workq_destroy((struct workqueue *)qe);
+
+ (void)splsched();
+ simple_lock(&thread_terminate_lock);
+ }
+
+ /*
+ * Check if something enqueued in thread terminate/deallocate queue
+ * while processing workq deallocate queue
+ */
+ if (!queue_empty(&thread_terminate_queue) ||
+ !queue_empty(&thread_deallocate_queue) ||
+ !queue_empty(&turnstile_deallocate_queue))
+ goto thread_terminate_start;
+
assert_wait((event_t)&thread_terminate_queue, THREAD_UNINT);
simple_unlock(&thread_terminate_lock);
/* splsched */
thread_wakeup((event_t)&thread_terminate_queue);
}
+/*
+ * thread_deallocate_enqueue:
+ *
+ * Enqueue a thread for final deallocation.
+ */
+static void
+thread_deallocate_enqueue(
+ thread_t thread)
+{
+ spl_t s = splsched();
+
+ simple_lock(&thread_terminate_lock);
+ enqueue_tail(&thread_deallocate_queue, &thread->runq_links);
+ simple_unlock(&thread_terminate_lock);
+
+ thread_wakeup((event_t)&thread_terminate_queue);
+ splx(s);
+}
+
+/*
+ * turnstile_deallocate_enqueue:
+ *
+ * Enqueue a turnstile for final deallocation.
+ */
+void
+turnstile_deallocate_enqueue(
+ struct turnstile *turnstile)
+{
+ spl_t s = splsched();
+
+ simple_lock(&thread_terminate_lock);
+ enqueue_tail(&turnstile_deallocate_queue, &turnstile->ts_deallocate_link);
+ simple_unlock(&thread_terminate_lock);
+
+ thread_wakeup((event_t)&thread_terminate_queue);
+ splx(s);
+}
+
+/*
+ * workq_deallocate_enqueue:
+ *
+ * Enqueue a workqueue for final deallocation.
+ */
+void
+workq_deallocate_enqueue(
+ struct workqueue *wq)
+{
+ spl_t s = splsched();
+
+ simple_lock(&thread_terminate_lock);
+ /*
+ * this is just to delay a zfree(), so we link the memory with no regards
+ * for how the struct looks like.
+ */
+ enqueue_tail(&workq_deallocate_queue, (queue_entry_t)wq);
+ simple_unlock(&thread_terminate_lock);
+
+ thread_wakeup((event_t)&thread_terminate_queue);
+ splx(s);
+}
+
/*
* thread_terminate_crashed_threads:
* walk the list of crashed threads and put back set of threads
{
thread_t th_remove;
boolean_t should_wake_terminate_queue = FALSE;
+ spl_t s = splsched();
simple_lock(&thread_terminate_lock);
/*
}
simple_unlock(&thread_terminate_lock);
+ splx(s);
if (should_wake_terminate_queue == TRUE) {
thread_wakeup((event_t)&thread_terminate_queue);
}
simple_lock_init(&thread_terminate_lock, 0);
queue_init(&thread_terminate_queue);
+ queue_init(&thread_deallocate_queue);
+ queue_init(&workq_deallocate_queue);
+ queue_init(&turnstile_deallocate_queue);
queue_init(&crashed_threads_queue);
result = kernel_thread_start_priority((thread_continue_t)thread_terminate_daemon, NULL, MINPRI_KERNEL, &thread);
#define TH_OPTION_NONE 0x00
#define TH_OPTION_NOCRED 0x01
#define TH_OPTION_NOSUSP 0x02
+#define TH_OPTION_WORKQ 0x04
/*
* Create a new thread.
task_t parent_task,
integer_t priority,
thread_continue_t continuation,
+ void *parameter,
int options,
thread_t *out_thread)
{
ipc_thread_init(new_thread);
new_thread->continuation = continuation;
+ new_thread->parameter = parameter;
+ new_thread->inheritor_flags = TURNSTILE_UPDATE_FLAGS_NONE;
+ priority_queue_init(&new_thread->inheritor_queue,
+ PRIORITY_QUEUE_BUILTIN_MAX_HEAP);
/* Allocate I/O Statistics structure */
new_thread->thread_io_stats = (io_stat_info_t)kalloc(sizeof(struct io_stat_info));
new_thread->decmp_upl = NULL;
#endif /* CONFIG_IOSCHED */
+#if DEVELOPMENT || DEBUG
+ task_lock(parent_task);
+ uint16_t thread_limit = parent_task->task_thread_limit;
+ if (exc_resource_threads_enabled &&
+ thread_limit > 0 &&
+ parent_task->thread_count >= thread_limit &&
+ !parent_task->task_has_crossed_thread_limit &&
+ !(parent_task->t_flags & TF_CORPSE)) {
+ int thread_count = parent_task->thread_count;
+ parent_task->task_has_crossed_thread_limit = TRUE;
+ task_unlock(parent_task);
+ SENDING_NOTIFICATION__TASK_HAS_TOO_MANY_THREADS(parent_task, thread_count);
+ }
+ else {
+ task_unlock(parent_task);
+ }
+#endif
+
lck_mtx_lock(&tasks_threads_lock);
task_lock(parent_task);
new_thread->inspection = FALSE;
}
new_thread->corpse_dup = FALSE;
+ new_thread->turnstile = turnstile_alloc();
*out_thread = new_thread;
if (kdebug_enable) {
if (task == TASK_NULL || task == kernel_task)
return (KERN_INVALID_ARGUMENT);
- result = thread_create_internal(task, -1, continuation, TH_OPTION_NONE, &thread);
+ result = thread_create_internal(task, -1, continuation, NULL, TH_OPTION_NONE, &thread);
if (result != KERN_SUCCESS)
return (result);
task_t task,
thread_continue_t continuation,
event_t event,
+ block_hint_t block_hint,
int options,
thread_t *new_thread)
{
if (task == TASK_NULL || task == kernel_task)
return (KERN_INVALID_ARGUMENT);
- result = thread_create_internal(task, -1, continuation, options, &thread);
+ result = thread_create_internal(task, -1, continuation, NULL,
+ options, &thread);
if (result != KERN_SUCCESS)
return (result);
thread_hold(thread);
thread_mtx_lock(thread);
+ thread_set_pending_block_hint(thread, block_hint);
+ if (options & TH_OPTION_WORKQ) {
+ thread->static_param = true;
+ event = workq_thread_init_and_wq_lock(task, thread);
+ }
thread_start_in_assert_wait(thread, event, THREAD_INTERRUPTIBLE);
thread_mtx_unlock(thread);
thread_t *new_thread)
{
return thread_create_waiting_internal(task, continuation, event,
- TH_OPTION_NONE, new_thread);
+ kThreadWaitNone, TH_OPTION_NONE, new_thread);
}
if (task == TASK_NULL || task == kernel_task)
return (KERN_INVALID_ARGUMENT);
- result = thread_create_internal(task, -1, (thread_continue_t)thread_bootstrap_return, TH_OPTION_NONE, &thread);
+ result = thread_create_internal(task, -1,
+ (thread_continue_t)thread_bootstrap_return, NULL,
+ TH_OPTION_NONE, &thread);
if (result != KERN_SUCCESS)
return (result);
if (task->suspend_count > 0)
thread_hold(thread);
- result = machine_thread_set_state(thread, flavor, new_state, new_state_count);
+ if (from_user) {
+ result = machine_thread_state_convert_from_user(thread, flavor,
+ new_state, new_state_count);
+ }
+ if (result == KERN_SUCCESS) {
+ result = machine_thread_set_state(thread, flavor, new_state,
+ new_state_count);
+ }
if (result != KERN_SUCCESS) {
task_unlock(task);
lck_mtx_unlock(&tasks_threads_lock);
new_thread, TRUE);
}
-kern_return_t
-thread_create_workq(
- task_t task,
- thread_continue_t thread_return,
- thread_t *new_thread)
-{
- kern_return_t result;
- thread_t thread;
-
- if (task == TASK_NULL || task == kernel_task)
- return (KERN_INVALID_ARGUMENT);
-
- result = thread_create_internal(task, -1, thread_return, TH_OPTION_NOCRED | TH_OPTION_NOSUSP, &thread);
- if (result != KERN_SUCCESS)
- return (result);
-
- thread->user_stop_count = 1;
- thread_hold(thread);
- if (task->suspend_count > 0)
- thread_hold(thread);
-
- task_unlock(task);
- lck_mtx_unlock(&tasks_threads_lock);
-
- *new_thread = thread;
-
- return (KERN_SUCCESS);
-}
-
kern_return_t
thread_create_workq_waiting(
task_t task,
thread_continue_t continuation,
- event_t event,
thread_t *new_thread)
{
-
- return thread_create_waiting_internal(task, continuation, event,
- TH_OPTION_NOCRED | TH_OPTION_NOSUSP,
- new_thread);
+ int options = TH_OPTION_NOCRED | TH_OPTION_NOSUSP | TH_OPTION_WORKQ;
+ return thread_create_waiting_internal(task, continuation, NULL,
+ kThreadWaitParkedWorkQueue, options, new_thread);
}
/*
thread_t thread;
task_t task = kernel_task;
- result = thread_create_internal(task, priority, continuation, TH_OPTION_NOCRED | TH_OPTION_NONE, &thread);
+ result = thread_create_internal(task, priority, continuation, parameter,
+ TH_OPTION_NOCRED | TH_OPTION_NONE, &thread);
if (result != KERN_SUCCESS)
return (result);
#endif
thread->reserved_stack = thread->kernel_stack;
- thread->parameter = parameter;
-
if(debug_task & 1)
kprintf("kernel_thread_create: thread = %p continuation = %p\n", thread, continuation);
*new_thread = thread;
/* fill in info */
thread_read_times(thread, &basic_info->user_time,
- &basic_info->system_time);
+ &basic_info->system_time, NULL);
/*
* Update lazy-evaluated scheduler info because someone wants it.
thread_read_times(
thread_t thread,
time_value_t *user_time,
- time_value_t *system_time)
+ time_value_t *system_time,
+ time_value_t *runnable_time)
{
clock_sec_t secs;
clock_usec_t usecs;
absolutetime_to_microtime(tval_user, &secs, &usecs);
user_time->seconds = (typeof(user_time->seconds))secs;
user_time->microseconds = usecs;
-
+
absolutetime_to_microtime(tval_system, &secs, &usecs);
system_time->seconds = (typeof(system_time->seconds))secs;
system_time->microseconds = usecs;
system_time->seconds = 0;
system_time->microseconds = 0;
}
+
+ if (runnable_time) {
+ uint64_t tval_runnable = timer_grab(&thread->runnable_timer);
+ absolutetime_to_microtime(tval_runnable, &secs, &usecs);
+ runnable_time->seconds = (typeof(runnable_time->seconds))secs;
+ runnable_time->microseconds = usecs;
+ }
}
uint64_t thread_get_runtime_self(void)
/* Not interrupt safe, as the scheduler may otherwise update timer values underneath us */
interrupt_state = ml_set_interrupts_enabled(FALSE);
processor = current_processor();
- timer_switch(PROCESSOR_DATA(processor, thread_timer), mach_absolute_time(), PROCESSOR_DATA(processor, thread_timer));
+ timer_update(PROCESSOR_DATA(processor, thread_timer), mach_absolute_time());
runtime = (timer_grab(&thread->user_timer) + timer_grab(&thread->system_timer));
ml_set_interrupts_enabled(interrupt_state);
if ((thread->rwlock_count-- == 1) && (thread->sched_flags & TH_SFLAG_RW_PROMOTED)) {
- lck_rw_clear_promotion(thread);
+ lck_rw_clear_promotion(thread, 0);
}
}
mach_exception_data_type_t code, mach_exception_data_type_t subcode)
{
assert(thread == current_thread());
- assert(thread->task != kernel_task);
+
+ /* don't set up the AST for kernel threads */
+ if (thread->task == kernel_task)
+ return;
spl_t s = splsched();
/*
code = t->guard_exc_info.code,
subcode = t->guard_exc_info.subcode;
+ t->guard_exc_info.code = 0;
+ t->guard_exc_info.subcode = 0;
+
switch (EXC_GUARD_DECODE_GUARD_TYPE(code)) {
+ case GUARD_TYPE_NONE:
+ /* lingering AST_GUARD on the processor? */
+ break;
case GUARD_TYPE_MACH_PORT:
mach_port_guard_ast(t, code, subcode);
- break;
+ break;
case GUARD_TYPE_FD:
fd_guard_ast(t, code, subcode);
break;
vn_guard_ast(t, code, subcode);
break;
#endif
+ case GUARD_TYPE_VIRT_MEMORY:
+ virt_memory_guard_ast(t, code, subcode);
+ break;
default:
panic("guard_exc_info %llx %llx", code, subcode);
}
interval_sec = (uint32_t)(interval_ns / NSEC_PER_SEC);
- thread_read_times(thread, &thread_user_time, &thread_system_time);
+ thread_read_times(thread, &thread_user_time, &thread_system_time, NULL);
time_value_add(&thread_total_time, &thread_user_time);
time_value_add(&thread_total_time, &thread_system_time);
ledger_get_entry_info(thread->t_threadledger, thread_ledgers.cpu_time, &lei);
}
}
+#if DEVELOPMENT || DEBUG
+void __attribute__((noinline)) SENDING_NOTIFICATION__TASK_HAS_TOO_MANY_THREADS(task_t task, int thread_count)
+{
+ mach_exception_data_type_t code[EXCEPTION_CODE_MAX] = {0};
+ int pid = task_pid(task);
+ char procname[MAXCOMLEN+1] = "unknown";
+
+ if (pid == 1) {
+ /*
+ * Cannot suspend launchd
+ */
+ return;
+ }
+
+ proc_name(pid, procname, sizeof(procname));
+
+ if (disable_exc_resource) {
+ printf("process %s[%d] crossed thread count high watermark (%d), EXC_RESOURCE "
+ "supressed by a boot-arg. \n", procname, pid, thread_count);
+ return;
+ }
+
+ if (audio_active) {
+ printf("process %s[%d] crossed thread count high watermark (%d), EXC_RESOURCE "
+ "supressed due to audio playback.\n", procname, pid, thread_count);
+ return;
+ }
+
+ if (exc_via_corpse_forking == 0) {
+ printf("process %s[%d] crossed thread count high watermark (%d), EXC_RESOURCE "
+ "supressed due to corpse forking being disabled.\n", procname, pid,
+ thread_count);
+ return;
+ }
+
+ printf("process %s[%d] crossed thread count high watermark (%d), sending "
+ "EXC_RESOURCE\n", procname, pid, thread_count);
+
+ EXC_RESOURCE_ENCODE_TYPE(code[0], RESOURCE_TYPE_THREADS);
+ EXC_RESOURCE_ENCODE_FLAVOR(code[0], FLAVOR_THREADS_HIGH_WATERMARK);
+ EXC_RESOURCE_THREADS_ENCODE_THREADS(code[0], thread_count);
+
+ task_enqueue_exception_with_corpse(task, EXC_RESOURCE, code, EXCEPTION_CODE_MAX, NULL);
+}
+#endif /* DEVELOPMENT || DEBUG */
+
void thread_update_io_stats(thread_t thread, int size, int io_flags)
{
int io_tier;
return (0);
}
-static void
-sched_call_null(
-__unused int type,
-__unused thread_t thread)
-{
- return;
-}
-
void
thread_sched_call(
thread_t thread,
sched_call_t call)
{
- thread->sched_call = (call != NULL)? call: sched_call_null;
+ assert((thread->state & TH_WAIT_REPORT) == 0);
+ thread->sched_call = call;
}
-sched_call_t
-thread_disable_sched_call(
- thread_t thread,
- sched_call_t call)
+uint64_t
+thread_tid(
+ thread_t thread)
{
- if (call) {
- spl_t s = splsched();
- thread_lock(thread);
- if (thread->sched_call == call) {
- thread->sched_call = sched_call_null;
- } else {
- call = NULL;
- }
- thread_unlock(thread);
- splx(s);
- }
- return call;
+ return (thread != THREAD_NULL? thread->thread_id: 0);
}
-void
-thread_reenable_sched_call(
- thread_t thread,
- sched_call_t call)
+uint16_t
+thread_set_tag(thread_t th, uint16_t tag)
{
- if (call) {
- spl_t s = splsched();
- thread_lock(thread);
- thread_sched_call(thread, call);
- thread_unlock(thread);
- splx(s);
- }
+ return thread_set_tag_internal(th, tag);
}
-void
-thread_static_param(
- thread_t thread,
- boolean_t state)
+uint16_t
+thread_get_tag(thread_t th)
{
- thread_mtx_lock(thread);
- thread->static_param = state;
- thread_mtx_unlock(thread);
+ return thread_get_tag_internal(th);
}
uint64_t
-thread_tid(
- thread_t thread)
+thread_last_run_time(thread_t th)
{
- return (thread != THREAD_NULL? thread->thread_id: 0);
-}
-
-uint16_t thread_set_tag(thread_t th, uint16_t tag) {
- return thread_set_tag_internal(th, tag);
-}
-uint16_t thread_get_tag(thread_t th) {
- return thread_get_tag_internal(th);
+ return th->last_run_time;
}
uint64_t
* within the osfmk component.
*/
+#undef thread_mtx_lock
+void thread_mtx_lock(thread_t thread);
+void
+thread_mtx_lock(thread_t thread)
+{
+ lck_mtx_lock(&thread->mutex);
+}
+
+#undef thread_mtx_unlock
+void thread_mtx_unlock(thread_t thread);
+void
+thread_mtx_unlock(thread_t thread)
+{
+ lck_mtx_unlock(&thread->mutex);
+}
+
#undef thread_reference
void thread_reference(thread_t thread);
void
ipc_voucher_t new_voucher = IPC_VOUCHER_NULL;
ipc_voucher_t voucher;
ledger_t bankledger = NULL;
- thread_group_t banktg = NULL;
+ struct thread_group *banktg = NULL;
if (MACH_PORT_DEAD == voucher_name)
return KERN_INVALID_RIGHT;
{
ipc_voucher_t old_voucher;
ledger_t bankledger = NULL;
- thread_group_t banktg = NULL;
+ struct thread_group *banktg = NULL;
if (THREAD_NULL == thread)
return KERN_INVALID_ARGUMENT;
* Conditions: callers holds a reference on the new and presumed old voucher(s).
* nothing locked.
*
- * If the old voucher is still the same as passed in, replace it with new voucher
- * and discard the old (and the reference passed in). Otherwise, discard the new
- * and return an updated old voucher.
+ * This function is no longer supported.
*/
kern_return_t
thread_swap_mach_voucher(
- thread_t thread,
- ipc_voucher_t new_voucher,
- ipc_voucher_t *in_out_old_voucher)
+ __unused thread_t thread,
+ __unused ipc_voucher_t new_voucher,
+ ipc_voucher_t *in_out_old_voucher)
{
- mach_port_name_t old_voucher_name;
- ipc_voucher_t old_voucher;
- ledger_t bankledger = NULL;
- thread_group_t banktg = NULL;
-
- if (THREAD_NULL == thread)
- return KERN_INVALID_TASK;
-
- if (thread != current_thread() && thread->started)
- return KERN_INVALID_ARGUMENT;
-
- bank_get_bank_ledger_and_thread_group(new_voucher, &bankledger, &banktg);
-
- thread_mtx_lock(thread);
-
- old_voucher = thread->ith_voucher;
-
- if (IPC_VOUCHER_NULL == old_voucher) {
- old_voucher_name = thread->ith_voucher_name;
-
- /* perform lazy binding if needed */
- if (MACH_PORT_VALID(old_voucher_name)) {
- old_voucher = convert_port_name_to_voucher(old_voucher_name);
- thread->ith_voucher_name = MACH_PORT_NULL;
- thread->ith_voucher = old_voucher;
-
- KERNEL_DEBUG_CONSTANT_IST(KDEBUG_TRACE,
- MACHDBG_CODE(DBG_MACH_IPC,MACH_THREAD_SET_VOUCHER) | DBG_FUNC_NONE,
- (uintptr_t)thread_tid(thread),
- (uintptr_t)old_voucher_name,
- VM_KERNEL_ADDRPERM((uintptr_t)old_voucher),
- 4, 0);
-
- }
- }
-
- /* swap in new voucher, if old voucher matches the one supplied */
- if (old_voucher == *in_out_old_voucher) {
- ipc_voucher_reference(new_voucher);
- thread->ith_voucher = new_voucher;
- thread->ith_voucher_name = MACH_PORT_NULL;
- thread_mtx_unlock(thread);
- bank_swap_thread_bank_ledger(thread, bankledger);
-
- KERNEL_DEBUG_CONSTANT_IST(KDEBUG_TRACE,
- MACHDBG_CODE(DBG_MACH_IPC,MACH_THREAD_SET_VOUCHER) | DBG_FUNC_NONE,
- (uintptr_t)thread_tid(thread),
- (uintptr_t)MACH_PORT_NULL,
- VM_KERNEL_ADDRPERM((uintptr_t)new_voucher),
- 5, 0);
-
- ipc_voucher_release(old_voucher);
-
- *in_out_old_voucher = IPC_VOUCHER_NULL;
- return KERN_SUCCESS;
- }
-
- /* Otherwise, just return old voucher reference */
- ipc_voucher_reference(old_voucher);
- thread_mtx_unlock(thread);
- *in_out_old_voucher = old_voucher;
- return KERN_SUCCESS;
+ /*
+ * Currently this function is only called from a MIG generated
+ * routine which doesn't release the reference on the voucher
+ * addressed by in_out_old_voucher. To avoid leaking this reference,
+ * a call to release it has been added here.
+ */
+ ipc_voucher_release(*in_out_old_voucher);
+ return KERN_NOT_SUPPORTED;
}
/*
return ret;
}
+uint64_t
+thread_get_last_wait_duration(thread_t thread)
+{
+ return thread->last_made_runnable_time - thread->last_run_time;
+}
+
#if CONFIG_DTRACE
uint32_t dtrace_get_thread_predcache(thread_t thread)
{
projects / apple / xnu.git / blobdiff