/*
- * Copyright (c) 2000-2012 Apple Inc. All rights reserved.
+ * Copyright (c) 2000-2015 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
#include <kern/assert.h>
#include <kern/exc_resource.h>
#include <kern/telemetry.h>
+#include <corpses/task_corpse.h>
#if KPC
#include <kern/kpc.h>
#endif
#include <ipc/ipc_kmsg.h>
#include <ipc/ipc_port.h>
+#include <bank/bank_types.h>
#include <vm/vm_kern.h>
#include <vm/vm_pageout.h>
#include <sys/kdebug.h>
-
+#include <sys/bsdtask_info.h>
#include <mach/sdt.h>
/*
#include <mach/thread_act_server.h>
#include <mach/mach_host_server.h>
#include <mach/host_priv_server.h>
+#include <mach/mach_voucher_server.h>
static struct zone *thread_zone;
static lck_grp_attr_t thread_lck_grp_attr;
lck_attr_t thread_lck_attr;
lck_grp_t thread_lck_grp;
+struct zone *thread_qos_override_zone;
+
decl_simple_lock_data(static,thread_stack_lock)
static queue_head_t thread_stack_queue;
decl_simple_lock_data(static,thread_terminate_lock)
static queue_head_t thread_terminate_queue;
+static queue_head_t crashed_threads_queue;
+
static struct thread thread_template, init_thread;
static void sched_call_null(
int thread_max = CONFIG_THREAD_MAX; /* Max number of threads */
int task_threadmax = CONFIG_THREAD_MAX;
-static uint64_t thread_unique_id = 0;
+static uint64_t thread_unique_id = 100;
struct _thread_ledger_indices thread_ledgers = { -1 };
static ledger_template_t thread_ledger_template = NULL;
void init_thread_ledgers(void);
int task_disable_cpumon(task_t task);
+#if CONFIG_JETSAM
+void jetsam_on_ledger_cpulimit_exceeded(void);
+#endif
+
/*
* Level (in terms of percentage of the limit) at which the CPU usage monitor triggers telemetry.
*
thread_template.reason = AST_NONE;
thread_template.at_safe_point = FALSE;
thread_template.wait_event = NO_EVENT64;
- thread_template.wait_queue = WAIT_QUEUE_NULL;
+ thread_template.waitq = NULL;
thread_template.wait_result = THREAD_WAITING;
thread_template.options = THREAD_ABORTSAFE;
thread_template.state = TH_WAIT | TH_UNINT;
thread_template.saved_mode = TH_MODE_NONE;
thread_template.safe_release = 0;
- thread_template.priority = 0;
+ thread_template.sfi_class = SFI_CLASS_UNSPECIFIED;
+ thread_template.sfi_wait_class = SFI_CLASS_UNSPECIFIED;
+
+ thread_template.active = 0;
+ thread_template.started = 0;
+ thread_template.static_param = 0;
+ thread_template.policy_reset = 0;
+
+ thread_template.base_pri = 0;
thread_template.sched_pri = 0;
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] =
+ thread_template.pending_promoter[0] = NULL;
thread_template.pending_promoter[1] = NULL;
thread_template.rwlock_count = 0;
+#if MACH_ASSERT
+ thread_template.SHARE_COUNT = 0;
+ thread_template.BG_COUNT = 0;
+#endif /* MACH_ASSERT */
+
thread_template.realtime.deadline = UINT64_MAX;
- thread_template.current_quantum = 0;
+ thread_template.quantum_remaining = 0;
thread_template.last_run_time = 0;
- thread_template.last_quantum_refill_time = 0;
+ thread_template.last_made_runnable_time = 0;
thread_template.computation_metered = 0;
thread_template.computation_epoch = 0;
-#if defined(CONFIG_SCHED_TRADITIONAL)
+#if defined(CONFIG_SCHED_TIMESHARE_CORE)
thread_template.sched_stamp = 0;
thread_template.pri_shift = INT8_MAX;
thread_template.sched_usage = 0;
thread_template.vtimer_prof_save = 0;
thread_template.vtimer_rlim_save = 0;
+#if CONFIG_SCHED_SFI
+ thread_template.wait_sfi_begin_time = 0;
+#endif
+
thread_template.wait_timer_is_set = FALSE;
thread_template.wait_timer_active = 0;
thread_template.depress_timer_active = 0;
- thread_template.special_handler.handler = special_handler;
- thread_template.special_handler.next = NULL;
-
- thread_template.funnel_lock = THR_FUNNEL_NULL;
- thread_template.funnel_state = 0;
thread_template.recover = (vm_offset_t)NULL;
thread_template.map = VM_MAP_NULL;
thread_template.kpc_buf = NULL;
#endif
+#if HYPERVISOR
+ thread_template.hv_thread_target = NULL;
+#endif /* HYPERVISOR */
+
thread_template.t_chud = 0;
+
+#if (DEVELOPMENT || DEBUG)
+ thread_template.t_page_creation_throttled_hard = 0;
+ thread_template.t_page_creation_throttled_soft = 0;
+#endif /* DEVELOPMENT || DEBUG */
+ thread_template.t_page_creation_throttled = 0;
thread_template.t_page_creation_count = 0;
thread_template.t_page_creation_time = 0;
thread_template.t_ledger = LEDGER_NULL;
thread_template.t_threadledger = LEDGER_NULL;
+#ifdef CONFIG_BANK
+ thread_template.t_bankledger = LEDGER_NULL;
+ thread_template.t_deduct_bank_ledger_time = 0;
+#endif
thread_template.requested_policy = default_task_requested_policy;
thread_template.effective_policy = default_task_effective_policy;
thread_template.pended_policy = default_task_pended_policy;
- thread_template.iotier_override = THROTTLE_LEVEL_NONE;
+ bzero(&thread_template.overrides, sizeof(thread_template.overrides));
+ thread_template.iotier_override = THROTTLE_LEVEL_NONE;
+ thread_template.thread_io_stats = NULL;
thread_template.thread_callout_interrupt_wakeups = thread_template.thread_callout_platform_idle_wakeups = 0;
thread_template.thread_timer_wakeups_bin_1 = thread_template.thread_timer_wakeups_bin_2 = 0;
thread_template.thread_tag = 0;
+ thread_template.ith_voucher_name = MACH_PORT_NULL;
+ thread_template.ith_voucher = IPC_VOUCHER_NULL;
+
+ thread_template.work_interval_id = 0;
+
init_thread = thread_template;
machine_set_current_thread(&init_thread);
}
+extern boolean_t allow_qos_policy_set;
+
void
thread_init(void)
{
THREAD_CHUNK * sizeof(struct thread),
"threads");
+ thread_qos_override_zone = zinit(
+ sizeof(struct thread_qos_override),
+ 4 * thread_max * sizeof(struct thread_qos_override),
+ PAGE_SIZE,
+ "thread qos override");
+ zone_change(thread_qos_override_zone, Z_EXPAND, TRUE);
+ zone_change(thread_qos_override_zone, Z_COLLECT, TRUE);
+ zone_change(thread_qos_override_zone, Z_CALLERACCT, FALSE);
+ zone_change(thread_qos_override_zone, Z_NOENCRYPT, TRUE);
+
lck_grp_attr_setdefault(&thread_lck_grp_attr);
lck_grp_init(&thread_lck_grp, "thread", &thread_lck_grp_attr);
lck_attr_setdefault(&thread_lck_attr);
cpumon_ustackshots_trigger_pct = CPUMON_USTACKSHOTS_TRIGGER_DEFAULT_PCT;
}
+ PE_parse_boot_argn("-qos-policy-allow", &allow_qos_policy_set, sizeof(allow_qos_policy_set));
+
init_thread_ledgers();
}
thread_terminate_self(void)
{
thread_t thread = current_thread();
-
task_t task;
spl_t s;
int threadcnt;
s = splsched();
thread_lock(thread);
+ assert_thread_sched_count(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--;
}
thread_unlock(thread);
splx(s);
+
+ thread_mtx_lock(thread);
+
thread_policy_reset(thread);
+ thread_mtx_unlock(thread);
task = thread->task;
- uthread_cleanup(task, thread->uthread, task->bsd_info);
+ uthread_cleanup(task, thread->uthread, task->bsd_info, thread->inspection == 1 ? TRUE : FALSE);
threadcnt = hw_atomic_sub(&task->active_thread_count, 1);
/*
* If we are the last thread to terminate and the task is
* associated with a BSD process, perform BSD process exit.
*/
- if (threadcnt == 0 && task->bsd_info != NULL)
+ if (threadcnt == 0 && task->bsd_info != NULL) {
proc_exit(task->bsd_info);
-
+ /*
+ * if there is crash info in task
+ * then do the deliver action since this is
+ * last thread for this task.
+ */
+ if (task->corpse_info) {
+ task_deliver_crash_notification(task);
+ }
+ }
uthread_cred_free(thread->uthread);
s = splsched();
*/
thread->state |= TH_TERMINATE;
thread_mark_wait_locked(thread, THREAD_UNINT);
+ assert((thread->sched_flags & TH_SFLAG_PROMOTED) == 0);
assert(thread->promotions == 0);
+ assert(!(thread->sched_flags & TH_SFLAG_WAITQ_PROMOTED));
assert(thread->rwlock_count == 0);
thread_unlock(thread);
/* splsched */
/*NOTREACHED*/
}
+/* Drop a thread refcount that definitely isn't the last one. */
+void
+thread_deallocate_safe(thread_t thread)
+{
+ if (__improbable(hw_atomic_sub(&(thread)->ref_count, 1) == 0))
+ panic("bad thread refcount!");
+}
+
void
thread_deallocate(
thread_t thread)
if (thread == THREAD_NULL)
return;
- if (thread_deallocate_internal(thread) > 0)
+ if (__probable(hw_atomic_sub(&(thread)->ref_count, 1) > 0))
return;
if(!(thread->state & TH_TERMINATE2))
panic("thread_deallocate: thread not properly terminated\n");
+ assert(thread->runq == PROCESSOR_NULL);
+
#if KPC
kpc_thread_destroy(thread);
#endif
-
ipc_thread_terminate(thread);
+ proc_thread_qos_deallocate(thread);
+
task = thread->task;
#ifdef MACH_BSD
if (thread->t_threadledger)
ledger_dereference(thread->t_threadledger);
+ if (IPC_VOUCHER_NULL != thread->ith_voucher)
+ ipc_voucher_release(thread->ith_voucher);
+
+ if (thread->thread_io_stats)
+ kfree(thread->thread_io_stats, sizeof(struct io_stat_info));
+
if (thread->kernel_stack != 0)
stack_free(thread);
simple_lock(&thread_terminate_lock);
while ((thread = (thread_t)dequeue_head(&thread_terminate_queue)) != THREAD_NULL) {
+
+ /*
+ * if marked for crash reporting, skip reaping.
+ * The corpse delivery thread will clear bit and enqueue
+ * for reaping when done
+ */
+ if (thread->inspection){
+ enqueue_tail(&crashed_threads_queue, (queue_entry_t)thread);
+ continue;
+ }
+
simple_unlock(&thread_terminate_lock);
(void)spllo();
+ assert(thread->SHARE_COUNT == 0);
+ assert(thread->BG_COUNT == 0);
+
task = thread->task;
task_lock(task);
task->task_timer_wakeups_bin_1 += thread->thread_timer_wakeups_bin_1;
task->task_timer_wakeups_bin_2 += thread->thread_timer_wakeups_bin_2;
+ task->task_gpu_ns += ml_gpu_stat(thread);
+
+ thread_update_qos_cpu_time(thread, FALSE);
queue_remove(&task->threads, thread, thread_t, task_threads);
task->thread_count--;
thread_terminate_enqueue(
thread_t thread)
{
+ KERNEL_DEBUG_CONSTANT(TRACE_DATA_THREAD_TERMINATE | DBG_FUNC_NONE, thread->thread_id, 0, 0, 0, 0);
+
simple_lock(&thread_terminate_lock);
enqueue_tail(&thread_terminate_queue, (queue_entry_t)thread);
simple_unlock(&thread_terminate_lock);
thread_wakeup((event_t)&thread_terminate_queue);
}
+/*
+ * thread_terminate_crashed_threads:
+ * walk the list of crashed therds and put back set of threads
+ * who are no longer being inspected.
+ */
+void
+thread_terminate_crashed_threads()
+{
+ thread_t th_iter, th_remove;
+ boolean_t should_wake_terminate_queue = FALSE;
+
+ simple_lock(&thread_terminate_lock);
+ /*
+ * loop through the crashed threads queue
+ * to put any threads that are not being inspected anymore
+ */
+ th_iter = (thread_t)queue_first(&crashed_threads_queue);
+ while (!queue_end(&crashed_threads_queue, (queue_entry_t)th_iter)) {
+ th_remove = th_iter;
+ th_iter = (thread_t)queue_next(&th_iter->links);
+
+ /* make sure current_thread is never in crashed queue */
+ assert(th_remove != current_thread());
+ if (th_remove->inspection != TRUE){
+ remque((queue_entry_t)th_remove);
+ enqueue_tail(&thread_terminate_queue, (queue_entry_t)th_remove);
+ should_wake_terminate_queue = TRUE;
+ }
+ }
+
+ simple_unlock(&thread_terminate_lock);
+ if (should_wake_terminate_queue == TRUE) {
+ thread_wakeup((event_t)&thread_terminate_queue);
+ }
+}
+
/*
* thread_stack_daemon:
*
/* allocate stack with interrupts enabled so that we can call into VM */
stack_alloc(thread);
+
+ KERNEL_DEBUG_CONSTANT(MACHDBG_CODE(DBG_MACH_SCHED,MACH_STACK_WAIT) | DBG_FUNC_END, thread_tid(thread), 0, 0, 0, 0);
s = splsched();
thread_lock(thread);
thread_stack_enqueue(
thread_t thread)
{
+ KERNEL_DEBUG_CONSTANT(MACHDBG_CODE(DBG_MACH_SCHED,MACH_STACK_WAIT) | DBG_FUNC_START, thread_tid(thread), 0, 0, 0, 0);
+
simple_lock(&thread_stack_lock);
enqueue_tail(&thread_stack_queue, (queue_entry_t)thread);
simple_unlock(&thread_stack_lock);
simple_lock_init(&thread_terminate_lock, 0);
queue_init(&thread_terminate_queue);
+ queue_init(&crashed_threads_queue);
result = kernel_thread_start_priority((thread_continue_t)thread_terminate_daemon, NULL, MINPRI_KERNEL, &thread);
if (result != KERN_SUCCESS)
thread_deallocate(thread);
}
+#define TH_OPTION_NONE 0x00
+#define TH_OPTION_NOCRED 0x01
+#define TH_OPTION_NOSUSP 0x02
/*
* Create a new thread.
* Doesn't start the thread running.
+ *
+ * Task and tasks_threads_lock are returned locked on success.
*/
static kern_return_t
thread_create_internal(
integer_t priority,
thread_continue_t continuation,
int options,
-#define TH_OPTION_NONE 0x00
-#define TH_OPTION_NOCRED 0x01
-#define TH_OPTION_NOSUSP 0x02
thread_t *out_thread)
{
thread_t new_thread;
new_thread->uthread = NULL;
/* cred free may not be necessary */
- uthread_cleanup(parent_task, ut, parent_task->bsd_info);
+ uthread_cleanup(parent_task, ut, parent_task->bsd_info, FALSE);
uthread_cred_free(ut);
uthread_zone_free(ut);
#endif /* MACH_BSD */
new_thread->continuation = continuation;
+ /* Allocate I/O Statistics structure */
+ new_thread->thread_io_stats = (io_stat_info_t)kalloc(sizeof(struct io_stat_info));
+ assert(new_thread->thread_io_stats != NULL);
+ bzero(new_thread->thread_io_stats, sizeof(struct io_stat_info));
+
+#if CONFIG_IOSCHED
+ /* Clear out the I/O Scheduling info for AppleFSCompression */
+ new_thread->decmp_upl = NULL;
+#endif /* CONFIG_IOSCHED */
+
lck_mtx_lock(&tasks_threads_lock);
task_lock(parent_task);
void *ut = new_thread->uthread;
new_thread->uthread = NULL;
- uthread_cleanup(parent_task, ut, parent_task->bsd_info);
+ uthread_cleanup(parent_task, ut, parent_task->bsd_info, FALSE);
/* cred free may not be necessary */
uthread_cred_free(ut);
uthread_zone_free(ut);
#endif /* MACH_BSD */
ipc_thread_disable(new_thread);
ipc_thread_terminate(new_thread);
+ kfree(new_thread->thread_io_stats, sizeof(struct io_stat_info));
lck_mtx_destroy(&new_thread->mutex, &thread_lck_grp);
machine_thread_destroy(new_thread);
zfree(thread_zone, new_thread);
*/
set_astledger(new_thread);
}
- new_thread->t_threadledger = LEDGER_NULL; /* per thread ledger is not inherited */
+
+ /* Instantiate a thread ledger. Do not fail thread creation if ledger creation fails. */
+ if ((new_thread->t_threadledger = ledger_instantiate(thread_ledger_template,
+ LEDGER_CREATE_INACTIVE_ENTRIES)) != LEDGER_NULL) {
+
+ ledger_entry_setactive(new_thread->t_threadledger, thread_ledgers.cpu_time);
+ }
+
+ new_thread->cpu_time_last_qos = 0;
+#ifdef CONFIG_BANK
+ new_thread->t_bankledger = LEDGER_NULL;
+ new_thread->t_deduct_bank_ledger_time = 0;
+#endif
+
new_thread->t_ledger = new_thread->task->ledger;
if (new_thread->t_ledger)
ledger_reference(new_thread->t_ledger);
+#if defined(CONFIG_SCHED_MULTIQ)
+ /* Cache the task's sched_group */
+ new_thread->sched_group = parent_task->sched_group;
+#endif /* defined(CONFIG_SCHED_MULTIQ) */
+
/* Cache the task's map */
new_thread->map = parent_task->map;
- /* Chain the thread onto the task's list */
- queue_enter(&parent_task->threads, new_thread, thread_t, task_threads);
- parent_task->thread_count++;
-
- /* So terminating threads don't need to take the task lock to decrement */
- hw_atomic_add(&parent_task->active_thread_count, 1);
-
- /* Protected by the tasks_threads_lock */
- new_thread->thread_id = ++thread_unique_id;
-
- queue_enter(&threads, new_thread, thread_t, threads);
- threads_count++;
-
timer_call_setup(&new_thread->wait_timer, thread_timer_expire, new_thread);
timer_call_setup(&new_thread->depress_timer, thread_depress_expire, new_thread);
-#if CONFIG_COUNTERS
- /*
- * If parent task has any reservations, they need to be propagated to this
- * thread.
- */
- new_thread->t_chud = (TASK_PMC_FLAG == (parent_task->t_chud & TASK_PMC_FLAG)) ?
- THREAD_PMC_FLAG : 0U;
-#endif
#if KPC
kpc_thread_create(new_thread);
#endif
new_thread->requested_policy.terminated = parent_task->effective_policy.terminated;
/* Set the thread's scheduling parameters */
+#if defined(CONFIG_SCHED_TIMESHARE_CORE)
+ new_thread->sched_stamp = sched_tick;
+ new_thread->pri_shift = sched_pri_shift;
+#endif /* defined(CONFIG_SCHED_TIMESHARE_CORE) */
+
new_thread->sched_mode = SCHED(initial_thread_sched_mode)(parent_task);
new_thread->sched_flags = 0;
new_thread->max_priority = parent_task->max_priority;
new_thread->task_priority = parent_task->priority;
- new_thread->priority = (priority < 0)? parent_task->priority: priority;
- if (new_thread->priority > new_thread->max_priority)
- new_thread->priority = new_thread->max_priority;
- new_thread->importance = new_thread->priority - new_thread->task_priority;
+
+ int new_priority = (priority < 0) ? parent_task->priority: priority;
+ new_priority = (priority < 0)? parent_task->priority: priority;
+ if (new_priority > new_thread->max_priority)
+ new_priority = new_thread->max_priority;
+
+ new_thread->importance = new_priority - new_thread->task_priority;
new_thread->saved_importance = new_thread->importance;
-#if defined(CONFIG_SCHED_TRADITIONAL)
- new_thread->sched_stamp = sched_tick;
- new_thread->pri_shift = sched_pri_shift;
-#endif
- SCHED(compute_priority)(new_thread, FALSE);
+ if (parent_task->max_priority <= MAXPRI_THROTTLE) {
+ sched_set_thread_throttled(new_thread, TRUE);
+ }
- new_thread->active = TRUE;
+ sched_set_thread_base_priority(new_thread, new_priority);
+ thread_policy_create(new_thread);
+
+ /* Chain the thread onto the task's list */
+ queue_enter(&parent_task->threads, new_thread, thread_t, task_threads);
+ parent_task->thread_count++;
+
+ /* So terminating threads don't need to take the task lock to decrement */
+ hw_atomic_add(&parent_task->active_thread_count, 1);
+
+ /* Protected by the tasks_threads_lock */
+ new_thread->thread_id = ++thread_unique_id;
+
+ queue_enter(&threads, new_thread, thread_t, threads);
+ threads_count++;
+
+ new_thread->active = TRUE;
+ new_thread->inspection = FALSE;
*out_thread = new_thread;
{
thread_create_internal2(
task_t task,
thread_t *new_thread,
- boolean_t from_user)
+ boolean_t from_user,
+ thread_continue_t continuation)
{
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_continue_t)thread_bootstrap_return, TH_OPTION_NONE, &thread);
+ result = thread_create_internal(task, -1, continuation, TH_OPTION_NONE, &thread);
if (result != KERN_SUCCESS)
return (result);
task_t task,
thread_t *new_thread)
{
- return thread_create_internal2(task, new_thread, FALSE);
+ return thread_create_internal2(task, new_thread, FALSE, (thread_continue_t)thread_bootstrap_return);
}
kern_return_t
task_t task,
thread_t *new_thread)
{
- return thread_create_internal2(task, new_thread, TRUE);
+ return thread_create_internal2(task, new_thread, TRUE, (thread_continue_t)thread_bootstrap_return);
+}
+
+kern_return_t
+thread_create_with_continuation(
+ task_t task,
+ thread_t *new_thread,
+ thread_continue_t continuation)
+{
+ return thread_create_internal2(task, new_thread, FALSE, continuation);
}
static kern_return_t
if (result != KERN_SUCCESS)
return (result);
- result = machine_thread_set_state(
- thread, flavor, new_state, new_state_count);
+ 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);
return kernel_thread_start_priority(continuation, parameter, -1, new_thread);
}
+/* Separated into helper function so it can be used by THREAD_BASIC_INFO and THREAD_EXTENDED_INFO */
+/* it is assumed that the thread is locked by the caller */
+static void
+retrieve_thread_basic_info(thread_t thread, thread_basic_info_t basic_info)
+{
+ int state, flags;
+
+ /* fill in info */
+
+ thread_read_times(thread, &basic_info->user_time,
+ &basic_info->system_time);
+
+ /*
+ * Update lazy-evaluated scheduler info because someone wants it.
+ */
+ if (SCHED(can_update_priority)(thread))
+ SCHED(update_priority)(thread);
+
+ basic_info->sleep_time = 0;
+
+ /*
+ * To calculate cpu_usage, first correct for timer rate,
+ * then for 5/8 ageing. The correction factor [3/5] is
+ * (1/(5/8) - 1).
+ */
+ basic_info->cpu_usage = 0;
+#if defined(CONFIG_SCHED_TIMESHARE_CORE)
+ if (sched_tick_interval) {
+ basic_info->cpu_usage = (integer_t)(((uint64_t)thread->cpu_usage
+ * TH_USAGE_SCALE) / sched_tick_interval);
+ basic_info->cpu_usage = (basic_info->cpu_usage * 3) / 5;
+ }
+#endif
+
+ if (basic_info->cpu_usage > TH_USAGE_SCALE)
+ basic_info->cpu_usage = TH_USAGE_SCALE;
+
+ basic_info->policy = ((thread->sched_mode == TH_MODE_TIMESHARE)?
+ POLICY_TIMESHARE: POLICY_RR);
+
+ flags = 0;
+ if (thread->options & TH_OPT_IDLE_THREAD)
+ flags |= TH_FLAGS_IDLE;
+
+ if (thread->options & TH_OPT_GLOBAL_FORCED_IDLE) {
+ flags |= TH_FLAGS_GLOBAL_FORCED_IDLE;
+ }
+
+ if (!thread->kernel_stack)
+ flags |= TH_FLAGS_SWAPPED;
+
+ state = 0;
+ if (thread->state & TH_TERMINATE)
+ state = TH_STATE_HALTED;
+ else
+ if (thread->state & TH_RUN)
+ state = TH_STATE_RUNNING;
+ else
+ if (thread->state & TH_UNINT)
+ state = TH_STATE_UNINTERRUPTIBLE;
+ else
+ if (thread->state & TH_SUSP)
+ state = TH_STATE_STOPPED;
+ else
+ if (thread->state & TH_WAIT)
+ state = TH_STATE_WAITING;
+
+ basic_info->run_state = state;
+ basic_info->flags = flags;
+
+ basic_info->suspend_count = thread->user_stop_count;
+
+ return;
+}
kern_return_t
thread_info_internal(
thread_info_t thread_info_out, /* ptr to OUT array */
mach_msg_type_number_t *thread_info_count) /*IN/OUT*/
{
- int state, flags;
- spl_t s;
+ spl_t s;
if (thread == THREAD_NULL)
return (KERN_INVALID_ARGUMENT);
if (flavor == THREAD_BASIC_INFO) {
- register thread_basic_info_t basic_info;
- if (*thread_info_count < THREAD_BASIC_INFO_COUNT)
+ if (*thread_info_count < THREAD_BASIC_INFO_COUNT)
return (KERN_INVALID_ARGUMENT);
- basic_info = (thread_basic_info_t) thread_info_out;
-
- s = splsched();
- thread_lock(thread);
-
- /* fill in info */
+ s = splsched();
+ thread_lock(thread);
- thread_read_times(thread, &basic_info->user_time,
- &basic_info->system_time);
+ retrieve_thread_basic_info(thread, (thread_basic_info_t) thread_info_out);
- /*
- * Update lazy-evaluated scheduler info because someone wants it.
- */
- if (SCHED(can_update_priority)(thread))
- SCHED(update_priority)(thread);
+ thread_unlock(thread);
+ splx(s);
- basic_info->sleep_time = 0;
+ *thread_info_count = THREAD_BASIC_INFO_COUNT;
- /*
- * To calculate cpu_usage, first correct for timer rate,
- * then for 5/8 ageing. The correction factor [3/5] is
- * (1/(5/8) - 1).
- */
- basic_info->cpu_usage = 0;
-#if defined(CONFIG_SCHED_TRADITIONAL)
- if (sched_tick_interval) {
- basic_info->cpu_usage = (integer_t)(((uint64_t)thread->cpu_usage
- * TH_USAGE_SCALE) / sched_tick_interval);
- basic_info->cpu_usage = (basic_info->cpu_usage * 3) / 5;
- }
-#endif
-
- if (basic_info->cpu_usage > TH_USAGE_SCALE)
- basic_info->cpu_usage = TH_USAGE_SCALE;
-
- basic_info->policy = ((thread->sched_mode == TH_MODE_TIMESHARE)?
- POLICY_TIMESHARE: POLICY_RR);
-
- flags = 0;
- if (thread->options & TH_OPT_IDLE_THREAD)
- flags |= TH_FLAGS_IDLE;
-
- if (!thread->kernel_stack)
- flags |= TH_FLAGS_SWAPPED;
-
- state = 0;
- if (thread->state & TH_TERMINATE)
- state = TH_STATE_HALTED;
- else
- if (thread->state & TH_RUN)
- state = TH_STATE_RUNNING;
- else
- if (thread->state & TH_UNINT)
- state = TH_STATE_UNINTERRUPTIBLE;
- else
- if (thread->state & TH_SUSP)
- state = TH_STATE_STOPPED;
- else
- if (thread->state & TH_WAIT)
- state = TH_STATE_WAITING;
-
- basic_info->run_state = state;
- basic_info->flags = flags;
-
- basic_info->suspend_count = thread->user_stop_count;
-
- thread_unlock(thread);
- splx(s);
-
- *thread_info_count = THREAD_BASIC_INFO_COUNT;
-
- return (KERN_SUCCESS);
+ return (KERN_SUCCESS);
}
else
if (flavor == THREAD_IDENTIFIER_INFO) {
- register thread_identifier_info_t identifier_info;
+ register thread_identifier_info_t identifier_info;
- if (*thread_info_count < THREAD_IDENTIFIER_INFO_COUNT)
+ if (*thread_info_count < THREAD_IDENTIFIER_INFO_COUNT)
return (KERN_INVALID_ARGUMENT);
- identifier_info = (thread_identifier_info_t) thread_info_out;
+ identifier_info = (thread_identifier_info_t) thread_info_out;
- s = splsched();
- thread_lock(thread);
+ s = splsched();
+ thread_lock(thread);
- identifier_info->thread_id = thread->thread_id;
- identifier_info->thread_handle = thread->machine.cthread_self;
- if(thread->task->bsd_info) {
- identifier_info->dispatch_qaddr = identifier_info->thread_handle + get_dispatchqueue_offset_from_proc(thread->task->bsd_info);
- } else {
- thread_unlock(thread);
- splx(s);
- return KERN_INVALID_ARGUMENT;
- }
+ identifier_info->thread_id = thread->thread_id;
+ identifier_info->thread_handle = thread->machine.cthread_self;
+ identifier_info->dispatch_qaddr = thread_dispatchqaddr(thread);
- thread_unlock(thread);
- splx(s);
- return KERN_SUCCESS;
+ thread_unlock(thread);
+ splx(s);
+ return KERN_SUCCESS;
}
else
if (flavor == THREAD_SCHED_TIMESHARE_INFO) {
ts_info = (policy_timeshare_info_t)thread_info_out;
- s = splsched();
+ s = splsched();
thread_lock(thread);
- if (thread->sched_mode != TH_MODE_TIMESHARE) {
- thread_unlock(thread);
+ if (thread->sched_mode != TH_MODE_TIMESHARE) {
+ thread_unlock(thread);
splx(s);
-
return (KERN_INVALID_POLICY);
- }
+ }
ts_info->depressed = (thread->sched_flags & TH_SFLAG_DEPRESSED_MASK) != 0;
if (ts_info->depressed) {
ts_info->base_priority = DEPRESSPRI;
- ts_info->depress_priority = thread->priority;
+ ts_info->depress_priority = thread->base_pri;
}
else {
- ts_info->base_priority = thread->priority;
+ ts_info->base_priority = thread->base_pri;
ts_info->depress_priority = -1;
}
ts_info->max_priority = thread->max_priority;
thread_unlock(thread);
- splx(s);
+ splx(s);
*thread_info_count = POLICY_TIMESHARE_INFO_COUNT;
- return (KERN_SUCCESS);
+ return (KERN_SUCCESS);
}
else
if (flavor == THREAD_SCHED_FIFO_INFO) {
policy_rr_info_t rr_info;
uint32_t quantum_time;
uint64_t quantum_ns;
-
+
if (*thread_info_count < POLICY_RR_INFO_COUNT)
return (KERN_INVALID_ARGUMENT);
rr_info = (policy_rr_info_t) thread_info_out;
- s = splsched();
+ s = splsched();
thread_lock(thread);
- if (thread->sched_mode == TH_MODE_TIMESHARE) {
- thread_unlock(thread);
+ if (thread->sched_mode == TH_MODE_TIMESHARE) {
+ thread_unlock(thread);
splx(s);
return (KERN_INVALID_POLICY);
rr_info->depressed = (thread->sched_flags & TH_SFLAG_DEPRESSED_MASK) != 0;
if (rr_info->depressed) {
rr_info->base_priority = DEPRESSPRI;
- rr_info->depress_priority = thread->priority;
+ rr_info->depress_priority = thread->base_pri;
}
else {
- rr_info->base_priority = thread->priority;
+ rr_info->base_priority = thread->base_pri;
rr_info->depress_priority = -1;
}
quantum_time = SCHED(initial_quantum_size)(THREAD_NULL);
absolutetime_to_nanoseconds(quantum_time, &quantum_ns);
-
+
rr_info->max_priority = thread->max_priority;
- rr_info->quantum = (uint32_t)(quantum_ns / 1000 / 1000);
+ rr_info->quantum = (uint32_t)(quantum_ns / 1000 / 1000);
thread_unlock(thread);
- splx(s);
+ splx(s);
*thread_info_count = POLICY_RR_INFO_COUNT;
- return (KERN_SUCCESS);
+ return (KERN_SUCCESS);
+ }
+ else
+ if (flavor == THREAD_EXTENDED_INFO) {
+ thread_basic_info_data_t basic_info;
+ thread_extended_info_t extended_info = (thread_extended_info_t) thread_info_out;
+
+ if (*thread_info_count < THREAD_EXTENDED_INFO_COUNT) {
+ return (KERN_INVALID_ARGUMENT);
+ }
+
+ s = splsched();
+ thread_lock(thread);
+
+ /* NOTE: This mimics fill_taskthreadinfo(), which is the function used by proc_pidinfo() for
+ * the PROC_PIDTHREADINFO flavor (which can't be used on corpses)
+ */
+ retrieve_thread_basic_info(thread, &basic_info);
+ extended_info->pth_user_time = ((basic_info.user_time.seconds * (integer_t)NSEC_PER_SEC) + (basic_info.user_time.microseconds * (integer_t)NSEC_PER_USEC));
+ extended_info->pth_system_time = ((basic_info.system_time.seconds * (integer_t)NSEC_PER_SEC) + (basic_info.system_time.microseconds * (integer_t)NSEC_PER_USEC));
+
+ extended_info->pth_cpu_usage = basic_info.cpu_usage;
+ extended_info->pth_policy = basic_info.policy;
+ extended_info->pth_run_state = basic_info.run_state;
+ extended_info->pth_flags = basic_info.flags;
+ extended_info->pth_sleep_time = basic_info.sleep_time;
+ extended_info->pth_curpri = thread->sched_pri;
+ extended_info->pth_priority = thread->base_pri;
+ extended_info->pth_maxpriority = thread->max_priority;
+
+ bsd_getthreadname(thread->uthread,extended_info->pth_name);
+
+ thread_unlock(thread);
+ splx(s);
+
+ *thread_info_count = THREAD_EXTENDED_INFO_COUNT;
+
+ return (KERN_SUCCESS);
+ }
+ else
+ if (flavor == THREAD_DEBUG_INFO_INTERNAL) {
+#if DEVELOPMENT || DEBUG
+ thread_debug_info_internal_t dbg_info;
+ if (*thread_info_count < THREAD_DEBUG_INFO_INTERNAL_COUNT)
+ return (KERN_NOT_SUPPORTED);
+
+ if (thread_info_out == NULL)
+ return (KERN_INVALID_ARGUMENT);
+
+ dbg_info = (thread_debug_info_internal_t) thread_info_out;
+ dbg_info->page_creation_count = thread->t_page_creation_count;
+
+ *thread_info_count = THREAD_DEBUG_INFO_INTERNAL_COUNT;
+ return (KERN_SUCCESS);
+#endif /* DEVELOPMENT || DEBUG */
+ return (KERN_NOT_SUPPORTED);
}
return (KERN_INVALID_ARGUMENT);
}
}
+uint64_t thread_get_runtime_self(void)
+{
+ boolean_t interrupt_state;
+ uint64_t runtime;
+ thread_t thread = NULL;
+ processor_t processor = NULL;
+
+ thread = current_thread();
+
+ /* 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));
+ runtime = (timer_grab(&thread->user_timer) + timer_grab(&thread->system_timer));
+ ml_set_interrupts_enabled(interrupt_state);
+
+ return runtime;
+}
+
kern_return_t
thread_assign(
__unused thread_t thread,
}
+boolean_t
+set_vm_privilege(boolean_t privileged)
+{
+ boolean_t was_vmpriv;
+
+ if (current_thread()->options & TH_OPT_VMPRIV)
+ was_vmpriv = TRUE;
+ else
+ was_vmpriv = FALSE;
+
+ if (privileged != FALSE)
+ current_thread()->options |= TH_OPT_VMPRIV;
+ else
+ current_thread()->options &= ~TH_OPT_VMPRIV;
+
+ return (was_vmpriv);
+}
+
+
/*
* XXX assuming current thread only, for now...
*/
task_t task = current_task();
thread_t thread = current_thread();
uint64_t tid = thread->thread_id;
- char *procname = (char *) "unknown";
+ const char *procname = "unknown";
time_value_t thread_total_time = {0, 0};
time_value_t thread_system_time;
time_value_t thread_user_time;
"It used more than %d%% CPU (Actual recent usage: %d%%) over %d seconds. "
"thread lifetime cpu usage %d.%06d seconds, (%d.%06d user, %d.%06d system) "
"ledger info: balance: %lld credit: %lld debit: %lld limit: %llu (%d%%) "
- "period: %llu time since last refill (ns): %llu \n",
+ "period: %llu time since last refill (ns): %llu %s\n",
procname, pid, tid,
percentage, usage_percent, interval_sec,
thread_total_time.seconds, thread_total_time.microseconds,
lei.lei_balance,
lei.lei_credit, lei.lei_debit,
lei.lei_limit, limit_percent,
- lei.lei_refill_period, lei.lei_last_refill);
+ lei.lei_refill_period, lei.lei_last_refill,
+ (fatal ? "[fatal violation]" : ""));
code[0] = code[1] = 0;
EXC_RESOURCE_ENCODE_TYPE(code[0], RESOURCE_TYPE_CPU);
- EXC_RESOURCE_ENCODE_FLAVOR(code[0], FLAVOR_CPU_MONITOR);
+ if (fatal) {
+ EXC_RESOURCE_ENCODE_FLAVOR(code[0], FLAVOR_CPU_MONITOR_FATAL);
+ }else {
+ EXC_RESOURCE_ENCODE_FLAVOR(code[0], FLAVOR_CPU_MONITOR);
+ }
EXC_RESOURCE_CPUMONITOR_ENCODE_INTERVAL(code[0], interval_sec);
EXC_RESOURCE_CPUMONITOR_ENCODE_PERCENTAGE(code[0], limit_percent);
EXC_RESOURCE_CPUMONITOR_ENCODE_PERCENTAGE(code[1], usage_percent);
exception_triage(EXC_RESOURCE, code, EXCEPTION_CODE_MAX);
if (fatal) {
+#if CONFIG_JETSAM
+ jetsam_on_ledger_cpulimit_exceeded();
+#else
task_terminate_internal(task);
+#endif
}
}
+void thread_update_io_stats(thread_t thread, int size, int io_flags)
+{
+ int io_tier;
+
+ if (thread->thread_io_stats == NULL || thread->task->task_io_stats == NULL)
+ return;
+
+ if (io_flags & DKIO_READ) {
+ UPDATE_IO_STATS(thread->thread_io_stats->disk_reads, size);
+ UPDATE_IO_STATS_ATOMIC(thread->task->task_io_stats->disk_reads, size);
+ }
+
+ if (io_flags & DKIO_META) {
+ UPDATE_IO_STATS(thread->thread_io_stats->metadata, size);
+ UPDATE_IO_STATS_ATOMIC(thread->task->task_io_stats->metadata, size);
+ }
+
+ if (io_flags & DKIO_PAGING) {
+ UPDATE_IO_STATS(thread->thread_io_stats->paging, size);
+ UPDATE_IO_STATS_ATOMIC(thread->task->task_io_stats->paging, size);
+ }
+
+ io_tier = ((io_flags & DKIO_TIER_MASK) >> DKIO_TIER_SHIFT);
+ assert (io_tier < IO_NUM_PRIORITIES);
+
+ UPDATE_IO_STATS(thread->thread_io_stats->io_priority[io_tier], size);
+ UPDATE_IO_STATS_ATOMIC(thread->task->task_io_stats->io_priority[io_tier], size);
+
+ /* Update Total I/O Counts */
+ UPDATE_IO_STATS(thread->thread_io_stats->total_io, size);
+ UPDATE_IO_STATS_ATOMIC(thread->task->task_io_stats->total_io, size);
+
+}
+
void
init_thread_ledgers(void) {
ledger_template_t t;
}
thread_ledgers.cpu_time = idx;
+
thread_ledger_template = t;
}
*/
if (thread->t_threadledger != LEDGER_NULL) {
l = thread->t_threadledger;
- /*
- * The only way to get a per-thread ledger is via CPU limits.
- */
- assert(thread->options & (TH_OPT_PROC_CPULIMIT | TH_OPT_PRVT_CPULIMIT));
- thread->t_threadledger = NULL;
- ledger_dereference(l);
+ ledger_set_limit(l, thread_ledgers.cpu_time, LEDGER_LIMIT_INFINITY, 0);
+ ledger_set_action(l, thread_ledgers.cpu_time, LEDGER_ACTION_IGNORE);
thread->options &= ~(TH_OPT_PROC_CPULIMIT | TH_OPT_PRVT_CPULIMIT);
}
return (0);
}
-int split_funnel_off = 0;
-lck_grp_t *funnel_lck_grp = LCK_GRP_NULL;
-lck_grp_attr_t *funnel_lck_grp_attr;
-lck_attr_t *funnel_lck_attr;
-
-funnel_t *
-funnel_alloc(
- int type)
-{
- lck_mtx_t *m;
- funnel_t *fnl;
-
- if (funnel_lck_grp == LCK_GRP_NULL) {
- funnel_lck_grp_attr = lck_grp_attr_alloc_init();
-
- funnel_lck_grp = lck_grp_alloc_init("Funnel", funnel_lck_grp_attr);
-
- funnel_lck_attr = lck_attr_alloc_init();
- }
- if ((fnl = (funnel_t *)kalloc(sizeof(funnel_t))) != 0){
- bzero((void *)fnl, sizeof(funnel_t));
- if ((m = lck_mtx_alloc_init(funnel_lck_grp, funnel_lck_attr)) == (lck_mtx_t *)NULL) {
- kfree(fnl, sizeof(funnel_t));
- return(THR_FUNNEL_NULL);
- }
- fnl->fnl_mutex = m;
- fnl->fnl_type = type;
- }
- return(fnl);
-}
-
-void
-funnel_free(
- funnel_t * fnl)
-{
- lck_mtx_free(fnl->fnl_mutex, funnel_lck_grp);
- if (fnl->fnl_oldmutex)
- lck_mtx_free(fnl->fnl_oldmutex, funnel_lck_grp);
- kfree(fnl, sizeof(funnel_t));
-}
-
-void
-funnel_lock(
- funnel_t * fnl)
-{
- lck_mtx_lock(fnl->fnl_mutex);
- fnl->fnl_mtxholder = current_thread();
-}
-
-void
-funnel_unlock(
- funnel_t * fnl)
-{
- lck_mtx_unlock(fnl->fnl_mutex);
- fnl->fnl_mtxholder = NULL;
- fnl->fnl_mtxrelease = current_thread();
-}
-
-funnel_t *
-thread_funnel_get(
- void)
-{
- thread_t th = current_thread();
-
- if (th->funnel_state & TH_FN_OWNED) {
- return(th->funnel_lock);
- }
- return(THR_FUNNEL_NULL);
-}
-
-boolean_t
-thread_funnel_set(
- funnel_t * fnl,
- boolean_t funneled)
-{
- thread_t cur_thread;
- boolean_t funnel_state_prev;
- boolean_t intr;
-
- cur_thread = current_thread();
- funnel_state_prev = ((cur_thread->funnel_state & TH_FN_OWNED) == TH_FN_OWNED);
-
- if (funnel_state_prev != funneled) {
- intr = ml_set_interrupts_enabled(FALSE);
-
- if (funneled == TRUE) {
- if (cur_thread->funnel_lock)
- panic("Funnel lock called when holding one %p", cur_thread->funnel_lock);
- KERNEL_DEBUG(0x6032428 | DBG_FUNC_NONE,
- fnl, 1, 0, 0, 0);
- funnel_lock(fnl);
- KERNEL_DEBUG(0x6032434 | DBG_FUNC_NONE,
- fnl, 1, 0, 0, 0);
- cur_thread->funnel_state |= TH_FN_OWNED;
- cur_thread->funnel_lock = fnl;
- } else {
- if(cur_thread->funnel_lock->fnl_mutex != fnl->fnl_mutex)
- panic("Funnel unlock when not holding funnel");
- cur_thread->funnel_state &= ~TH_FN_OWNED;
- KERNEL_DEBUG(0x603242c | DBG_FUNC_NONE,
- fnl, 1, 0, 0, 0);
-
- cur_thread->funnel_lock = THR_FUNNEL_NULL;
- funnel_unlock(fnl);
- }
- (void)ml_set_interrupts_enabled(intr);
- } else {
- /* if we are trying to acquire funnel recursively
- * check for funnel to be held already
- */
- if (funneled && (fnl->fnl_mutex != cur_thread->funnel_lock->fnl_mutex)) {
- panic("thread_funnel_set: already holding a different funnel");
- }
- }
- return(funnel_state_prev);
-}
-
static void
sched_call_null(
__unused int type,
if (thread != THREAD_NULL) {
thread_handle = thread->machine.cthread_self;
-
- if (thread->task->bsd_info)
+
+ if (thread->inspection == TRUE)
+ dispatchqueue_addr = thread_handle + get_task_dispatchqueue_offset(thread->task);
+ else if (thread->task->bsd_info)
dispatchqueue_addr = thread_handle + get_dispatchqueue_offset_from_proc(thread->task->bsd_info);
}
return (thread_should_halt_fast(th));
}
+/*
+ * thread_set_voucher_name - reset the voucher port name bound to this thread
+ *
+ * Conditions: nothing locked
+ *
+ * If we already converted the previous name to a cached voucher
+ * reference, then we discard that reference here. The next lookup
+ * will cache it again.
+ */
+
+kern_return_t
+thread_set_voucher_name(mach_port_name_t voucher_name)
+{
+ thread_t thread = current_thread();
+ ipc_voucher_t new_voucher = IPC_VOUCHER_NULL;
+ ipc_voucher_t voucher;
+#ifdef CONFIG_BANK
+ ledger_t bankledger = NULL;
+#endif
+
+ if (MACH_PORT_DEAD == voucher_name)
+ return KERN_INVALID_RIGHT;
+
+ /*
+ * agressively convert to voucher reference
+ */
+ if (MACH_PORT_VALID(voucher_name)) {
+ new_voucher = convert_port_name_to_voucher(voucher_name);
+ if (IPC_VOUCHER_NULL == new_voucher)
+ return KERN_INVALID_ARGUMENT;
+ }
+#ifdef CONFIG_BANK
+ bankledger = bank_get_voucher_ledger(new_voucher);
+#endif
+
+ thread_mtx_lock(thread);
+ voucher = thread->ith_voucher;
+ thread->ith_voucher_name = voucher_name;
+ thread->ith_voucher = new_voucher;
+#ifdef CONFIG_BANK
+ bank_swap_thread_bank_ledger(thread, bankledger);
+#endif
+ thread_mtx_unlock(thread);
+
+ 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)voucher_name,
+ VM_KERNEL_ADDRPERM((uintptr_t)new_voucher),
+ 1, 0);
+
+ if (IPC_VOUCHER_NULL != voucher)
+ ipc_voucher_release(voucher);
+
+ return KERN_SUCCESS;
+}
+
+/*
+ * thread_get_mach_voucher - return a voucher reference for the specified thread voucher
+ *
+ * Conditions: nothing locked
+ *
+ * A reference to the voucher may be lazily pending, if someone set the voucher name
+ * but nobody has done a lookup yet. In that case, we'll have to do the equivalent
+ * lookup here.
+ *
+ * NOTE: At the moment, there is no distinction between the current and effective
+ * vouchers because we only set them at the thread level currently.
+ */
+kern_return_t
+thread_get_mach_voucher(
+ thread_act_t thread,
+ mach_voucher_selector_t __unused which,
+ ipc_voucher_t *voucherp)
+{
+ ipc_voucher_t voucher;
+ mach_port_name_t voucher_name;
+
+ if (THREAD_NULL == thread)
+ return KERN_INVALID_ARGUMENT;
+
+ thread_mtx_lock(thread);
+ voucher = thread->ith_voucher;
+
+ /* if already cached, just return a ref */
+ if (IPC_VOUCHER_NULL != voucher) {
+ ipc_voucher_reference(voucher);
+ thread_mtx_unlock(thread);
+ *voucherp = voucher;
+ return KERN_SUCCESS;
+ }
+
+ voucher_name = thread->ith_voucher_name;
+
+ /* convert the name to a port, then voucher reference */
+ if (MACH_PORT_VALID(voucher_name)) {
+ ipc_port_t port;
+
+ if (KERN_SUCCESS !=
+ ipc_object_copyin(thread->task->itk_space, voucher_name,
+ MACH_MSG_TYPE_COPY_SEND, (ipc_object_t *)&port)) {
+ thread->ith_voucher_name = MACH_PORT_NULL;
+ thread_mtx_unlock(thread);
+ *voucherp = IPC_VOUCHER_NULL;
+ return KERN_SUCCESS;
+ }
+
+ /* convert to a voucher ref to return, and cache a ref on thread */
+ voucher = convert_port_to_voucher(port);
+ ipc_voucher_reference(voucher);
+ thread->ith_voucher = voucher;
+ thread_mtx_unlock(thread);
+
+ 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)port,
+ VM_KERNEL_ADDRPERM((uintptr_t)voucher),
+ 2, 0);
+
+
+ ipc_port_release_send(port);
+ } else
+ thread_mtx_unlock(thread);
+
+ *voucherp = voucher;
+ return KERN_SUCCESS;
+}
+
+/*
+ * thread_set_mach_voucher - set a voucher reference for the specified thread voucher
+ *
+ * Conditions: callers holds a reference on the voucher.
+ * nothing locked.
+ *
+ * We grab another reference to the voucher and bind it to the thread. Any lazy
+ * binding is erased. The old voucher reference associated with the thread is
+ * discarded.
+ */
+kern_return_t
+thread_set_mach_voucher(
+ thread_t thread,
+ ipc_voucher_t voucher)
+{
+ ipc_voucher_t old_voucher;
+#ifdef CONFIG_BANK
+ ledger_t bankledger = NULL;
+#endif
+
+ if (THREAD_NULL == thread)
+ return KERN_INVALID_ARGUMENT;
+
+ if (thread != current_thread() || thread->started)
+ return KERN_INVALID_ARGUMENT;
+
+
+ ipc_voucher_reference(voucher);
+#ifdef CONFIG_BANK
+ bankledger = bank_get_voucher_ledger(voucher);
+#endif
+ thread_mtx_lock(thread);
+ old_voucher = thread->ith_voucher;
+ thread->ith_voucher = voucher;
+ thread->ith_voucher_name = MACH_PORT_NULL;
+#ifdef CONFIG_BANK
+ bank_swap_thread_bank_ledger(thread, bankledger);
+#endif
+ thread_mtx_unlock(thread);
+
+ 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)voucher),
+ 3, 0);
+
+ ipc_voucher_release(old_voucher);
+
+ return KERN_SUCCESS;
+}
+
+/*
+ * thread_swap_mach_voucher - swap a voucher reference for the specified thread voucher
+ *
+ * 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.
+ */
+kern_return_t
+thread_swap_mach_voucher(
+ thread_t thread,
+ ipc_voucher_t new_voucher,
+ ipc_voucher_t *in_out_old_voucher)
+{
+ mach_port_name_t old_voucher_name;
+ ipc_voucher_t old_voucher;
+#ifdef CONFIG_BANK
+ ledger_t bankledger = NULL;
+#endif
+
+ if (THREAD_NULL == thread)
+ return KERN_INVALID_TASK;
+
+ if (thread != current_thread() || thread->started)
+ return KERN_INVALID_ARGUMENT;
+
+#ifdef CONFIG_BANK
+ bankledger = bank_get_voucher_ledger(new_voucher);
+#endif
+
+ 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;
+#ifdef CONFIG_BANK
+ bank_swap_thread_bank_ledger(thread, bankledger);
+#endif
+ thread_mtx_unlock(thread);
+
+ 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;
+}
+
+/*
+ * thread_get_current_voucher_origin_pid - get the pid of the originator of the current voucher.
+ */
+kern_return_t
+thread_get_current_voucher_origin_pid(
+ int32_t *pid)
+{
+ uint32_t buf_size;
+ kern_return_t kr;
+ thread_t thread = current_thread();
+
+ buf_size = sizeof(*pid);
+ kr = mach_voucher_attr_command(thread->ith_voucher,
+ MACH_VOUCHER_ATTR_KEY_BANK,
+ BANK_ORIGINATOR_PID,
+ NULL,
+ 0,
+ (mach_voucher_attr_content_t)pid,
+ &buf_size);
+
+ return kr;
+}
+
#if CONFIG_DTRACE
uint32_t dtrace_get_thread_predcache(thread_t thread)
{
return 0;
}
+int dtrace_get_thread_last_cpu_id(thread_t thread)
+{
+ if ((thread != THREAD_NULL) && (thread->last_processor != PROCESSOR_NULL)) {
+ return thread->last_processor->cpu_id;
+ } else {
+ return -1;
+ }
+}
+
int64_t dtrace_get_thread_tracing(thread_t thread)
{
if (thread != THREAD_NULL)
projects / apple / xnu.git / blobdiff