/*
- * Copyright (c) 2000-2008 Apple Inc. All rights reserved.
+ * Copyright (c) 2000-2009 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
#include <ppc/hw_perfmon.h>
#endif
+
/*
* Exported interfaces
*/
#include <security/mac_mach_internal.h>
#endif
-task_t kernel_task;
-zone_t task_zone;
+#if CONFIG_COUNTERS
+#include <pmc/pmc.h>
+#endif /* CONFIG_COUNTERS */
+
+task_t kernel_task;
+zone_t task_zone;
+lck_attr_t task_lck_attr;
+lck_grp_t task_lck_grp;
+lck_grp_attr_t task_lck_grp_attr;
+
+int task_max = CONFIG_TASK_MAX; /* Max number of tasks */
/* Forwards */
ledger_t wired,
ledger_t paged);
+int check_for_tasksuspend(
+ task_t task);
+
void
task_backing_store_privileged(
task_t task)
task_t task,
boolean_t is64bit)
{
-#ifdef __i386__
+#if defined(__i386__) || defined(__x86_64__)
thread_t thread;
#endif /* __i386__ */
int vm_flags = 0;
MACH_VM_MAX_ADDRESS,
0);
#ifdef __ppc__
- /* LP64todo - make this clean */
/*
* PPC51: ppc64 is limited to 51-bit addresses.
* Memory mapped above that limit is handled specially
* certain routines may observe the thread as being in an inconsistent
* state with respect to its task's 64-bitness.
*/
-#ifdef __i386__
+#if defined(__i386__) || defined(__x86_64__)
+ task_lock(task);
queue_iterate(&task->threads, thread, thread_t, task_threads) {
+ thread_mtx_lock(thread);
machine_thread_switch_addrmode(thread);
+ thread_mtx_unlock(thread);
}
+ task_unlock(task);
#endif /* __i386__ */
}
+
+void
+task_set_dyld_info(task_t task, mach_vm_address_t addr, mach_vm_size_t size)
+{
+ task_lock(task);
+ task->all_image_info_addr = addr;
+ task->all_image_info_size = size;
+ task_unlock(task);
+}
+
void
task_init(void)
{
+
+ lck_grp_attr_setdefault(&task_lck_grp_attr);
+ lck_grp_init(&task_lck_grp, "task", &task_lck_grp_attr);
+ lck_attr_setdefault(&task_lck_attr);
+ lck_mtx_init(&tasks_threads_lock, &task_lck_grp, &task_lck_attr);
+
task_zone = zinit(
sizeof(struct task),
- TASK_MAX * sizeof(struct task),
+ task_max * sizeof(struct task),
TASK_CHUNK * sizeof(struct task),
"tasks");
/*
* Create the kernel task as the first task.
*/
+#ifdef __LP64__
+ if (task_create_internal(TASK_NULL, FALSE, TRUE, &kernel_task) != KERN_SUCCESS)
+#else
if (task_create_internal(TASK_NULL, FALSE, FALSE, &kernel_task) != KERN_SUCCESS)
+#endif
panic("task_init\n");
vm_map_deallocate(kernel_task->map);
/* one ref for just being alive; one for our caller */
new_task->ref_count = 2;
+ /* if inherit_memory is true, parent_task MUST not be NULL */
if (inherit_memory)
new_task->map = vm_map_fork(parent_task->map);
else
/* Inherit memlock limit from parent */
if (parent_task)
- vm_map_set_user_wire_limit(new_task->map, parent_task->map->user_wire_limit);
+ vm_map_set_user_wire_limit(new_task->map, (vm_size_t)parent_task->map->user_wire_limit);
- mutex_init(&new_task->lock, 0);
+ lck_mtx_init(&new_task->lock, &task_lck_grp, &task_lck_attr);
queue_init(&new_task->threads);
new_task->suspend_count = 0;
new_task->thread_count = 0;
new_task->active_thread_count = 0;
new_task->user_stop_count = 0;
- new_task->pset_hint = PROCESSOR_SET_NULL;
new_task->role = TASK_UNSPECIFIED;
new_task->active = TRUE;
+ new_task->halting = FALSE;
new_task->user_data = NULL;
new_task->faults = 0;
new_task->cow_faults = 0;
new_task->bsd_info = NULL;
#endif /* MACH_BSD */
-#ifdef __i386__
+#if defined(__i386__) || defined(__x86_64__)
new_task->i386_ldt = 0;
+ new_task->task_debug = NULL;
+
#endif
#ifdef __ppc__
new_task->lock_sets_owned = 0;
#if CONFIG_MACF_MACH
- /*mutex_init(&new_task->labellock, ETAP_NO_TRACE);*/
new_task->label = labelh_new(1);
mac_task_label_init (&new_task->maclabel);
#endif
new_task->affinity_space = NULL;
+#if CONFIG_COUNTERS
+ new_task->t_chud = 0U;
+#endif
+
if (parent_task != TASK_NULL) {
new_task->sec_token = parent_task->sec_token;
new_task->audit_token = parent_task->audit_token;
convert_port_to_ledger(parent_task->paged_ledger_port));
if(task_has_64BitAddr(parent_task))
task_set_64BitAddr(new_task);
+ new_task->all_image_info_addr = parent_task->all_image_info_addr;
+ new_task->all_image_info_size = parent_task->all_image_info_size;
-#ifdef __i386__
+#if defined(__i386__) || defined(__x86_64__)
if (inherit_memory && parent_task->i386_ldt)
new_task->i386_ldt = user_ldt_copy(parent_task->i386_ldt);
#endif
if (inherit_memory && parent_task->affinity_space)
task_affinity_create(parent_task, new_task);
+
+ new_task->pset_hint = parent_task->pset_hint = task_choose_pset(parent_task);
}
else {
new_task->sec_token = KERNEL_SECURITY_TOKEN;
new_task->audit_token = KERNEL_AUDIT_TOKEN;
new_task->wired_ledger_port = ledger_copy(root_wired_ledger);
new_task->paged_ledger_port = ledger_copy(root_paged_ledger);
+#ifdef __LP64__
+ if(is_64bit)
+ task_set_64BitAddr(new_task);
+#endif
+
+ new_task->pset_hint = PROCESSOR_SET_NULL;
}
if (kernel_task == TASK_NULL) {
new_task->max_priority = MAXPRI_USER;
}
- mutex_lock(&tasks_threads_lock);
+ lck_mtx_lock(&tasks_threads_lock);
queue_enter(&tasks, new_task, task_t, tasks);
tasks_count++;
- mutex_unlock(&tasks_threads_lock);
+ lck_mtx_unlock(&tasks_threads_lock);
if (vm_backing_store_low && parent_task != NULL)
new_task->priv_flags |= (parent_task->priv_flags&VM_BACKING_STORE_PRIV);
vm_map_deallocate(task->map);
is_release(task->itk_space);
+ lck_mtx_destroy(&task->lock, &task_lck_grp);
+
#if CONFIG_MACF_MACH
labelh_release(task->label);
#endif
ipc_space_destroy(task->itk_space);
#ifdef __ppc__
- /* LP64todo - make this clean */
/*
* PPC51: ppc64 is limited to 51-bit addresses.
*/
/* release our shared region */
vm_shared_region_set(task, NULL);
- mutex_lock(&tasks_threads_lock);
+ lck_mtx_lock(&tasks_threads_lock);
queue_remove(&tasks, task, task_t, tasks);
tasks_count--;
- mutex_unlock(&tasks_threads_lock);
+ lck_mtx_unlock(&tasks_threads_lock);
/*
* We no longer need to guard against being aborted, so restore
}
/*
- * task_halt:
+ * task_start_halt:
*
* Shut the current task down (except for the current thread) in
* preparation for dramatic changes to the task (probably exec).
- * We hold the task, terminate all other threads in the task and
- * wait for them to terminate, clean up the portspace, and when
- * all done, let the current thread go.
+ * We hold the task and mark all other threads in the task for
+ * termination.
*/
kern_return_t
-task_halt(
+task_start_halt(
task_t task)
{
thread_t thread, self;
task_lock(task);
- if (!task->active || !self->active) {
+ if (task->halting || !task->active || !self->active) {
/*
* Task or current thread is already being terminated.
* Hurry up and return out of the current kernel context
return (KERN_FAILURE);
}
+ task->halting = TRUE;
+
if (task->thread_count > 1) {
+
/*
* Mark all the threads to keep them from starting any more
* user-level execution. The thread_terminate_internal code
task_release_locked(task);
}
+ task_unlock(task);
+ return KERN_SUCCESS;
+}
+
+
+/*
+ * task_complete_halt:
+ *
+ * Complete task halt by waiting for threads to terminate, then clean
+ * up task resources (VM, port namespace, etc...) and then let the
+ * current thread go in the (practically empty) task context.
+ */
+void
+task_complete_halt(task_t task)
+{
+ task_lock(task);
+ assert(task->halting);
+ assert(task == current_task());
/*
* Give the machine dependent code a chance
- * to perform cleanup before ripping apart
- * the task.
+ * to perform cleanup of task-level resources
+ * associated with the current thread before
+ * ripping apart the task.
+ *
+ * This must be done with the task locked.
*/
machine_thread_terminate_self();
- task_unlock(task);
+ /*
+ * Wait for the other threads to get shut down.
+ * When the last other thread is reaped, we'll be
+ * worken up.
+ */
+ if (task->thread_count > 1) {
+ assert_wait((event_t)&task->halting, THREAD_UNINT);
+ task_unlock(task);
+ thread_block(THREAD_CONTINUE_NULL);
+ } else {
+ task_unlock(task);
+ }
/*
* Destroy all synchronizers owned by the task.
vm_map_remove(task->map, task->map->min_offset,
task->map->max_offset, VM_MAP_NO_FLAGS);
- return (KERN_SUCCESS);
+ task->halting = FALSE;
}
/*
task_info_t task_info_out,
mach_msg_type_number_t *task_info_count)
{
+ kern_return_t error = KERN_SUCCESS;
+
if (task == TASK_NULL)
return (KERN_INVALID_ARGUMENT);
+ task_lock(task);
+
+ if ((task != current_task()) && (!task->active)) {
+ task_unlock(task);
+ return (KERN_INVALID_ARGUMENT);
+ }
+
switch (flavor) {
case TASK_BASIC_INFO_32:
case TASK_BASIC2_INFO_32:
{
task_basic_info_32_t basic_info;
- vm_map_t map;
+ vm_map_t map;
+ clock_sec_t secs;
+ clock_usec_t usecs;
- if (*task_info_count < TASK_BASIC_INFO_32_COUNT)
- return (KERN_INVALID_ARGUMENT);
+ if (*task_info_count < TASK_BASIC_INFO_32_COUNT) {
+ error = KERN_INVALID_ARGUMENT;
+ break;
+ }
basic_info = (task_basic_info_32_t)task_info_out;
map = (task == kernel_task)? kernel_map: task->map;
- basic_info->virtual_size = CAST_DOWN(vm_offset_t,map->size);
+ basic_info->virtual_size = (typeof(basic_info->virtual_size))map->size;
if (flavor == TASK_BASIC2_INFO_32) {
/*
* The "BASIC2" flavor gets the maximum resident
}
basic_info->resident_size *= PAGE_SIZE;
- task_lock(task);
basic_info->policy = ((task != kernel_task)?
POLICY_TIMESHARE: POLICY_RR);
basic_info->suspend_count = task->user_stop_count;
- absolutetime_to_microtime(task->total_user_time,
- (unsigned *)&basic_info->user_time.seconds,
- (unsigned *)&basic_info->user_time.microseconds);
- absolutetime_to_microtime(task->total_system_time,
- (unsigned *)&basic_info->system_time.seconds,
- (unsigned *)&basic_info->system_time.microseconds);
- task_unlock(task);
+ absolutetime_to_microtime(task->total_user_time, &secs, &usecs);
+ basic_info->user_time.seconds =
+ (typeof(basic_info->user_time.seconds))secs;
+ basic_info->user_time.microseconds = usecs;
+
+ absolutetime_to_microtime(task->total_system_time, &secs, &usecs);
+ basic_info->system_time.seconds =
+ (typeof(basic_info->system_time.seconds))secs;
+ basic_info->system_time.microseconds = usecs;
*task_info_count = TASK_BASIC_INFO_32_COUNT;
break;
case TASK_BASIC_INFO_64:
{
task_basic_info_64_t basic_info;
- vm_map_t map;
+ vm_map_t map;
+ clock_sec_t secs;
+ clock_usec_t usecs;
- if (*task_info_count < TASK_BASIC_INFO_64_COUNT)
- return (KERN_INVALID_ARGUMENT);
+ if (*task_info_count < TASK_BASIC_INFO_64_COUNT) {
+ error = KERN_INVALID_ARGUMENT;
+ break;
+ }
basic_info = (task_basic_info_64_t)task_info_out;
(mach_vm_size_t)(pmap_resident_count(map->pmap))
* PAGE_SIZE_64;
- task_lock(task);
basic_info->policy = ((task != kernel_task)?
POLICY_TIMESHARE: POLICY_RR);
basic_info->suspend_count = task->user_stop_count;
- absolutetime_to_microtime(task->total_user_time,
- (unsigned *)&basic_info->user_time.seconds,
- (unsigned *)&basic_info->user_time.microseconds);
- absolutetime_to_microtime(task->total_system_time,
- (unsigned *)&basic_info->system_time.seconds,
- (unsigned *)&basic_info->system_time.microseconds);
- task_unlock(task);
+ absolutetime_to_microtime(task->total_user_time, &secs, &usecs);
+ basic_info->user_time.seconds =
+ (typeof(basic_info->user_time.seconds))secs;
+ basic_info->user_time.microseconds = usecs;
+
+ absolutetime_to_microtime(task->total_system_time, &secs, &usecs);
+ basic_info->system_time.seconds =
+ (typeof(basic_info->system_time.seconds))secs;
+ basic_info->system_time.microseconds = usecs;
*task_info_count = TASK_BASIC_INFO_64_COUNT;
break;
register task_thread_times_info_t times_info;
register thread_t thread;
- if (*task_info_count < TASK_THREAD_TIMES_INFO_COUNT)
- return (KERN_INVALID_ARGUMENT);
+ if (*task_info_count < TASK_THREAD_TIMES_INFO_COUNT) {
+ error = KERN_INVALID_ARGUMENT;
+ break;
+ }
times_info = (task_thread_times_info_t) task_info_out;
times_info->user_time.seconds = 0;
times_info->system_time.seconds = 0;
times_info->system_time.microseconds = 0;
- task_lock(task);
queue_iterate(&task->threads, thread, thread_t, task_threads) {
time_value_t user_time, system_time;
time_value_add(×_info->system_time, &system_time);
}
- task_unlock(task);
*task_info_count = TASK_THREAD_TIMES_INFO_COUNT;
break;
task_absolutetime_info_t info;
register thread_t thread;
- if (*task_info_count < TASK_ABSOLUTETIME_INFO_COUNT)
- return (KERN_INVALID_ARGUMENT);
+ if (*task_info_count < TASK_ABSOLUTETIME_INFO_COUNT) {
+ error = KERN_INVALID_ARGUMENT;
+ break;
+ }
info = (task_absolutetime_info_t)task_info_out;
info->threads_user = info->threads_system = 0;
- task_lock(task);
info->total_user = task->total_user_time;
info->total_system = task->total_system_time;
info->total_system += tval;
}
- task_unlock(task);
*task_info_count = TASK_ABSOLUTETIME_INFO_COUNT;
break;
}
+ case TASK_DYLD_INFO:
+ {
+ task_dyld_info_t info;
+
+ if (*task_info_count < TASK_DYLD_INFO_COUNT) {
+ error = KERN_INVALID_ARGUMENT;
+ break;
+ }
+ info = (task_dyld_info_t)task_info_out;
+ info->all_image_info_addr = task->all_image_info_addr;
+ info->all_image_info_size = task->all_image_info_size;
+ *task_info_count = TASK_DYLD_INFO_COUNT;
+ break;
+ }
+
/* OBSOLETE */
case TASK_SCHED_FIFO_INFO:
{
- if (*task_info_count < POLICY_FIFO_BASE_COUNT)
- return (KERN_INVALID_ARGUMENT);
+ if (*task_info_count < POLICY_FIFO_BASE_COUNT) {
+ error = KERN_INVALID_ARGUMENT;
+ break;
+ }
- return (KERN_INVALID_POLICY);
+ error = KERN_INVALID_POLICY;
}
/* OBSOLETE */
{
register policy_rr_base_t rr_base;
- if (*task_info_count < POLICY_RR_BASE_COUNT)
- return (KERN_INVALID_ARGUMENT);
+ if (*task_info_count < POLICY_RR_BASE_COUNT) {
+ error = KERN_INVALID_ARGUMENT;
+ break;
+ }
rr_base = (policy_rr_base_t) task_info_out;
- task_lock(task);
if (task != kernel_task) {
- task_unlock(task);
- return (KERN_INVALID_POLICY);
+ error = KERN_INVALID_POLICY;
+ break;
}
rr_base->base_priority = task->priority;
- task_unlock(task);
rr_base->quantum = std_quantum_us / 1000;
{
register policy_timeshare_base_t ts_base;
- if (*task_info_count < POLICY_TIMESHARE_BASE_COUNT)
- return (KERN_INVALID_ARGUMENT);
+ if (*task_info_count < POLICY_TIMESHARE_BASE_COUNT) {
+ error = KERN_INVALID_ARGUMENT;
+ break;
+ }
ts_base = (policy_timeshare_base_t) task_info_out;
- task_lock(task);
if (task == kernel_task) {
- task_unlock(task);
- return (KERN_INVALID_POLICY);
+ error = KERN_INVALID_POLICY;
+ break;
}
ts_base->base_priority = task->priority;
- task_unlock(task);
*task_info_count = POLICY_TIMESHARE_BASE_COUNT;
break;
{
register security_token_t *sec_token_p;
- if (*task_info_count < TASK_SECURITY_TOKEN_COUNT)
- return (KERN_INVALID_ARGUMENT);
+ if (*task_info_count < TASK_SECURITY_TOKEN_COUNT) {
+ error = KERN_INVALID_ARGUMENT;
+ break;
+ }
sec_token_p = (security_token_t *) task_info_out;
- task_lock(task);
*sec_token_p = task->sec_token;
- task_unlock(task);
*task_info_count = TASK_SECURITY_TOKEN_COUNT;
break;
{
register audit_token_t *audit_token_p;
- if (*task_info_count < TASK_AUDIT_TOKEN_COUNT)
- return (KERN_INVALID_ARGUMENT);
+ if (*task_info_count < TASK_AUDIT_TOKEN_COUNT) {
+ error = KERN_INVALID_ARGUMENT;
+ break;
+ }
audit_token_p = (audit_token_t *) task_info_out;
- task_lock(task);
*audit_token_p = task->audit_token;
- task_unlock(task);
*task_info_count = TASK_AUDIT_TOKEN_COUNT;
break;
}
case TASK_SCHED_INFO:
- return (KERN_INVALID_ARGUMENT);
+ error = KERN_INVALID_ARGUMENT;
case TASK_EVENTS_INFO:
{
register task_events_info_t events_info;
register thread_t thread;
- if (*task_info_count < TASK_EVENTS_INFO_COUNT)
- return (KERN_INVALID_ARGUMENT);
+ if (*task_info_count < TASK_EVENTS_INFO_COUNT) {
+ error = KERN_INVALID_ARGUMENT;
+ break;
+ }
events_info = (task_events_info_t) task_info_out;
- task_lock(task);
events_info->faults = task->faults;
events_info->pageins = task->pageins;
events_info->csw += thread->c_switch;
}
- task_unlock(task);
*task_info_count = TASK_EVENTS_INFO_COUNT;
break;
}
case TASK_AFFINITY_TAG_INFO:
{
- if (*task_info_count < TASK_AFFINITY_TAG_INFO_COUNT)
- return (KERN_INVALID_ARGUMENT);
+ if (*task_info_count < TASK_AFFINITY_TAG_INFO_COUNT) {
+ error = KERN_INVALID_ARGUMENT;
+ break;
+ }
- return task_affinity_info(task, task_info_out, task_info_count);
+ error = task_affinity_info(task, task_info_out, task_info_count);
}
default:
- return (KERN_INVALID_ARGUMENT);
+ error = KERN_INVALID_ARGUMENT;
}
- return (KERN_SUCCESS);
+ task_unlock(task);
+ return (error);
}
void
uint32_t *microsecs)
{
thread_t thread = current_thread();
- uint32_t tdelt, secs;
+ uint32_t tdelt;
+ clock_sec_t secs;
uint64_t tsum;
assert(task == current_task());
assert(task->vtimers & which);
- tdelt = secs = 0;
+ secs = tdelt = 0;
switch (which) {
case TASK_VTIMER_USER:
- tdelt = timer_delta(&thread->user_timer,
+ tdelt = (uint32_t)timer_delta(&thread->user_timer,
&thread->vtimer_user_save);
+ absolutetime_to_microtime(tdelt, &secs, microsecs);
break;
case TASK_VTIMER_PROF:
tsum = timer_grab(&thread->user_timer);
tsum += timer_grab(&thread->system_timer);
- tdelt = tsum - thread->vtimer_prof_save;
- thread->vtimer_prof_save = tsum;
+ tdelt = (uint32_t)(tsum - thread->vtimer_prof_save);
+ absolutetime_to_microtime(tdelt, &secs, microsecs);
+ /* if the time delta is smaller than a usec, ignore */
+ if (*microsecs != 0)
+ thread->vtimer_prof_save = tsum;
break;
case TASK_VTIMER_RLIM:
tsum = timer_grab(&thread->user_timer);
tsum += timer_grab(&thread->system_timer);
- tdelt = tsum - thread->vtimer_rlim_save;
+ tdelt = (uint32_t)(tsum - thread->vtimer_rlim_save);
thread->vtimer_rlim_save = tsum;
+ absolutetime_to_microtime(tdelt, &secs, microsecs);
break;
}
- absolutetime_to_microtime(tdelt, &secs, microsecs);
}
/*
}
}
+/*
+ * Install default (machine-dependent) initial thread state
+ * on the task. Subsequent thread creation will have this initial
+ * state set on the thread by machine_thread_inherit_taskwide().
+ * Flavors and structures are exactly the same as those to thread_set_state()
+ */
+kern_return_t
+task_set_state(
+ task_t task,
+ int flavor,
+ thread_state_t state,
+ mach_msg_type_number_t state_count)
+{
+ kern_return_t ret;
+
+ if (task == TASK_NULL) {
+ return (KERN_INVALID_ARGUMENT);
+ }
+
+ task_lock(task);
+
+ if (!task->active) {
+ task_unlock(task);
+ return (KERN_FAILURE);
+ }
+
+ ret = machine_task_set_state(task, flavor, state, state_count);
+
+ task_unlock(task);
+ return ret;
+}
+
+/*
+ * Examine the default (machine-dependent) initial thread state
+ * on the task, as set by task_set_state(). Flavors and structures
+ * are exactly the same as those passed to thread_get_state().
+ */
+kern_return_t
+task_get_state(
+ task_t task,
+ int flavor,
+ thread_state_t state,
+ mach_msg_type_number_t *state_count)
+{
+ kern_return_t ret;
+
+ if (task == TASK_NULL) {
+ return (KERN_INVALID_ARGUMENT);
+ }
+
+ task_lock(task);
+
+ if (!task->active) {
+ task_unlock(task);
+ return (KERN_FAILURE);
+ }
+
+ ret = machine_task_get_state(task, flavor, state, state_count);
+
+ task_unlock(task);
+ return ret;
+}
+
+
/*
* We need to export some functions to other components that
* are currently implemented in macros within the osfmk
return (FALSE);
}
+int
+check_for_tasksuspend(task_t task)
+{
+
+ if (task == TASK_NULL)
+ return (0);
+
+ return (task->suspend_count > 0);
+}
+
#undef current_task
task_t current_task(void);
task_t current_task(void)
projects / apple / xnu.git / blobdiff