X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/0b4c1975fb5e4eccf1012a35081f7e7799b81046..bd504ef0e0b883cdd7917b73b3574eb9ce669905:/osfmk/kern/task.c diff --git a/osfmk/kern/task.c b/osfmk/kern/task.c index c5efca2a7..324195b3d 100644 --- a/osfmk/kern/task.c +++ b/osfmk/kern/task.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2000-2009 Apple Inc. All rights reserved. + * Copyright (c) 2000-2010 Apple Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * @@ -86,7 +86,6 @@ * Copyright (c) 2005 SPARTA, Inc. */ -#include #include #include @@ -113,7 +112,6 @@ #include #include /* for thread_wakeup */ #include -#include #include #include #include @@ -127,16 +125,6 @@ #include #include -#if MACH_KDB -#include -#endif /* MACH_KDB */ - -#ifdef __ppc__ -#include -#include -#endif - - /* * Exported interfaces */ @@ -162,15 +150,34 @@ zone_t task_zone; lck_attr_t task_lck_attr; lck_grp_t task_lck_grp; lck_grp_attr_t task_lck_grp_attr; +#if CONFIG_EMBEDDED +lck_mtx_t task_watch_mtx; +#endif /* CONFIG_EMBEDDED */ + +zinfo_usage_store_t tasks_tkm_private; +zinfo_usage_store_t tasks_tkm_shared; + +/* A container to accumulate statistics for expired tasks */ +expired_task_statistics_t dead_task_statistics; +lck_spin_t dead_task_statistics_lock; + +static ledger_template_t task_ledger_template = NULL; +struct _task_ledger_indices task_ledgers = {-1, -1, -1, -1, -1, -1, -1}; +void init_task_ledgers(void); + int task_max = CONFIG_TASK_MAX; /* Max number of tasks */ +/* externs for BSD kernel */ +extern void proc_getexecutableuuid(void *, unsigned char *, unsigned long); + /* Forwards */ void task_hold_locked( task_t task); void task_wait_locked( - task_t task); + task_t task, + boolean_t until_not_runnable); void task_release_locked( task_t task); void task_free( @@ -178,11 +185,6 @@ void task_free( void task_synchronizer_destroy_all( task_t task); -kern_return_t task_set_ledger( - task_t task, - ledger_t wired, - ledger_t paged); - int check_for_tasksuspend( task_t task); @@ -226,17 +228,6 @@ task_set_64bit( (vm_map_offset_t) VM_MAX_ADDRESS, MACH_VM_MAX_ADDRESS, 0); -#ifdef __ppc__ - /* - * PPC51: ppc64 is limited to 51-bit addresses. - * Memory mapped above that limit is handled specially - * at the pmap level, so let pmap clean the commpage mapping - * explicitly... - */ - pmap_unmap_sharedpage(task->map->pmap); /* Unmap commpage */ - /* ... and avoid regular pmap cleanup */ - vm_flags |= VM_MAP_REMOVE_NO_PMAP_CLEANUP; -#endif /* __ppc__ */ /* remove the higher VM mappings */ (void) vm_map_remove(task->map, MACH_VM_MAX_ADDRESS, @@ -279,14 +270,20 @@ task_init(void) 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); +#if CONFIG_EMBEDDED + lck_mtx_init(&task_watch_mtx, &task_lck_grp, &task_lck_attr); +#endif /* CONFIG_EMBEDDED */ task_zone = zinit( sizeof(struct task), task_max * sizeof(struct task), TASK_CHUNK * sizeof(struct task), "tasks"); + zone_change(task_zone, Z_NOENCRYPT, TRUE); + init_task_ledgers(); + /* * Create the kernel task as the first task. */ @@ -299,6 +296,7 @@ task_init(void) vm_map_deallocate(kernel_task->map); kernel_task->map = kernel_map; + lck_spin_init(&dead_task_statistics_lock, &task_lck_grp, &task_lck_attr); } /* @@ -357,6 +355,41 @@ host_security_create_task_token( return(KERN_FAILURE); } +void +init_task_ledgers(void) +{ + ledger_template_t t; + + assert(task_ledger_template == NULL); + assert(kernel_task == TASK_NULL); + + if ((t = ledger_template_create("Per-task ledger")) == NULL) + panic("couldn't create task ledger template"); + + task_ledgers.cpu_time = ledger_entry_add(t, "cpu_time", "sched", "ns"); + task_ledgers.tkm_private = ledger_entry_add(t, "tkm_private", + "physmem", "bytes"); + task_ledgers.tkm_shared = ledger_entry_add(t, "tkm_shared", "physmem", + "bytes"); + task_ledgers.phys_mem = ledger_entry_add(t, "phys_mem", "physmem", + "bytes"); + task_ledgers.wired_mem = ledger_entry_add(t, "wired_mem", "physmem", + "bytes"); + task_ledgers.platform_idle_wakeups = ledger_entry_add(t, "platform_idle_wakeups", "power", + "count"); + task_ledgers.interrupt_wakeups = ledger_entry_add(t, "interrupt_wakeups", "power", + "count"); + + if ((task_ledgers.cpu_time < 0) || (task_ledgers.tkm_private < 0) || + (task_ledgers.tkm_shared < 0) || (task_ledgers.phys_mem < 0) || + (task_ledgers.wired_mem < 0) || (task_ledgers.platform_idle_wakeups < 0) || + (task_ledgers.interrupt_wakeups < 0)) { + panic("couldn't create entries for task ledger template"); + } + + task_ledger_template = t; +} + kern_return_t task_create_internal( task_t parent_task, @@ -366,6 +399,7 @@ task_create_internal( { task_t new_task; vm_shared_region_t shared_region; + ledger_t ledger = NULL; new_task = (task_t) zalloc(task_zone); @@ -375,13 +409,22 @@ task_create_internal( /* one ref for just being alive; one for our caller */ new_task->ref_count = 2; + /* allocate with active entries */ + assert(task_ledger_template != NULL); + if ((ledger = ledger_instantiate(task_ledger_template, + LEDGER_CREATE_ACTIVE_ENTRIES)) == NULL) { + zfree(task_zone, new_task); + return(KERN_RESOURCE_SHORTAGE); + } + new_task->ledger = ledger; + /* if inherit_memory is true, parent_task MUST not be NULL */ if (inherit_memory) - new_task->map = vm_map_fork(parent_task->map); + new_task->map = vm_map_fork(ledger, parent_task->map); else - new_task->map = vm_map_create(pmap_create(0, is_64bit), - (vm_map_offset_t)(VM_MIN_ADDRESS), - (vm_map_offset_t)(VM_MAX_ADDRESS), TRUE); + new_task->map = vm_map_create(pmap_create(ledger, 0, is_64bit), + (vm_map_offset_t)(VM_MIN_ADDRESS), + (vm_map_offset_t)(VM_MAX_ADDRESS), TRUE); /* Inherit memlock limit from parent */ if (parent_task) @@ -409,6 +452,8 @@ task_create_internal( new_task->taskFeatures[0] = 0; /* Init task features */ new_task->taskFeatures[1] = 0; /* Init task features */ + zinfo_task_init(new_task); + #ifdef MACH_BSD new_task->bsd_info = NULL; #endif /* MACH_BSD */ @@ -416,12 +461,8 @@ task_create_internal( #if defined(__i386__) || defined(__x86_64__) new_task->i386_ldt = 0; new_task->task_debug = NULL; - #endif -#ifdef __ppc__ - if(BootProcInfo.pf.Available & pf64Bit) new_task->taskFeatures[0] |= tf64BitData; /* If 64-bit machine, show we have 64-bit registers at least */ -#endif queue_init(&new_task->semaphore_list); queue_init(&new_task->lock_set_list); @@ -448,6 +489,23 @@ task_create_internal( new_task->t_chud = 0U; #endif + new_task->pidsuspended = FALSE; + new_task->frozen = FALSE; + new_task->rusage_cpu_flags = 0; + new_task->rusage_cpu_percentage = 0; + new_task->rusage_cpu_interval = 0; + new_task->rusage_cpu_deadline = 0; + new_task->rusage_cpu_callt = NULL; + new_task->proc_terminate = 0; +#if CONFIG_EMBEDDED + queue_init(&new_task->task_watchers); + new_task->appstate = TASK_APPSTATE_ACTIVE; + new_task->num_taskwatchers = 0; + new_task->watchapplying = 0; +#endif /* CONFIG_EMBEDDED */ + + new_task->uexc_range_start = new_task->uexc_range_size = new_task->uexc_handler = 0; + if (parent_task != TASK_NULL) { new_task->sec_token = parent_task->sec_token; new_task->audit_token = parent_task->audit_token; @@ -456,10 +514,6 @@ task_create_internal( shared_region = vm_shared_region_get(parent_task); vm_shared_region_set(new_task, shared_region); - new_task->wired_ledger_port = ledger_copy( - convert_port_to_ledger(parent_task->wired_ledger_port)); - new_task->paged_ledger_port = ledger_copy( - 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; @@ -473,18 +527,32 @@ task_create_internal( task_affinity_create(parent_task, new_task); new_task->pset_hint = parent_task->pset_hint = task_choose_pset(parent_task); + new_task->policystate = parent_task->policystate; + /* inherit the self action state */ + new_task->appliedstate = parent_task->appliedstate; + new_task->ext_policystate = parent_task->ext_policystate; +#if NOTYET + /* till the child lifecycle is cleared do not inherit external action */ + new_task->ext_appliedstate = parent_task->ext_appliedstate; +#else + new_task->ext_appliedstate = default_task_null_policy; +#endif } 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->all_image_info_addr = (mach_vm_address_t)0; + new_task->all_image_info_size = (mach_vm_size_t)0; new_task->pset_hint = PROCESSOR_SET_NULL; + new_task->policystate = default_task_proc_policy; + new_task->ext_policystate = default_task_proc_policy; + new_task->appliedstate = default_task_null_policy; + new_task->ext_appliedstate = default_task_null_policy; } if (kernel_task == TASK_NULL) { @@ -495,6 +563,9 @@ task_create_internal( new_task->priority = BASEPRI_DEFAULT; new_task->max_priority = MAXPRI_USER; } + + bzero(&new_task->extmod_statistics, sizeof(new_task->extmod_statistics)); + new_task->task_timer_wakeups_bin_1 = new_task->task_timer_wakeups_bin_2 = 0; lck_mtx_lock(&tasks_threads_lock); queue_enter(&tasks, new_task, task_t, tasks); @@ -519,12 +590,25 @@ void task_deallocate( task_t task) { + ledger_amount_t credit, debit, interrupt_wakeups, platform_idle_wakeups; + if (task == TASK_NULL) return; if (task_deallocate_internal(task) > 0) return; + lck_mtx_lock(&tasks_threads_lock); + queue_remove(&terminated_tasks, task, task_t, tasks); + lck_mtx_unlock(&tasks_threads_lock); + + /* + * Give the machine dependent code a chance + * to perform cleanup before ripping apart + * the task. + */ + machine_task_terminate(task); + ipc_task_terminate(task); if (task->affinity_space) @@ -533,11 +617,41 @@ task_deallocate( vm_map_deallocate(task->map); is_release(task->itk_space); + ledger_get_entries(task->ledger, task_ledgers.interrupt_wakeups, + &interrupt_wakeups, &debit); + ledger_get_entries(task->ledger, task_ledgers.platform_idle_wakeups, + &platform_idle_wakeups, &debit); + + /* Accumulate statistics for dead tasks */ + lck_spin_lock(&dead_task_statistics_lock); + dead_task_statistics.total_user_time += task->total_user_time; + dead_task_statistics.total_system_time += task->total_system_time; + + dead_task_statistics.task_interrupt_wakeups += interrupt_wakeups; + dead_task_statistics.task_platform_idle_wakeups += platform_idle_wakeups; + + dead_task_statistics.task_timer_wakeups_bin_1 += task->task_timer_wakeups_bin_1; + dead_task_statistics.task_timer_wakeups_bin_2 += task->task_timer_wakeups_bin_2; + + lck_spin_unlock(&dead_task_statistics_lock); lck_mtx_destroy(&task->lock, &task_lck_grp); #if CONFIG_MACF_MACH labelh_release(task->label); #endif + + if (!ledger_get_entries(task->ledger, task_ledgers.tkm_private, &credit, + &debit)) { + OSAddAtomic64(credit, (int64_t *)&tasks_tkm_private.alloc); + OSAddAtomic64(debit, (int64_t *)&tasks_tkm_private.free); + } + if (!ledger_get_entries(task->ledger, task_ledgers.tkm_shared, &credit, + &debit)) { + OSAddAtomic64(credit, (int64_t *)&tasks_tkm_shared.alloc); + OSAddAtomic64(debit, (int64_t *)&tasks_tkm_shared.free); + } + ledger_dereference(task->ledger); + zinfo_task_free(task); zfree(task_zone, task); } @@ -603,9 +717,9 @@ task_terminate_internal( task_lock(task); } - if (!task->active || !self->active) { + if (!task->active) { /* - * Task or current act is already being terminated. + * Task is already being terminated. * Just return an error. If we are dying, this will * just get us to our AST special handler and that * will get us to finalize the termination of ourselves. @@ -645,15 +759,14 @@ task_terminate_internal( thread_terminate_internal(thread); } + task_unlock(task); + +#if CONFIG_EMBEDDED /* - * Give the machine dependent code a chance - * to perform cleanup before ripping apart - * the task. + * remove all task watchers */ - if (self_task == task) - machine_thread_terminate_self(); - - task_unlock(task); + task_removewatchers(task); +#endif /* CONFIG_EMBEDDED */ /* * Destroy all synchronizers owned by the task. @@ -663,14 +776,7 @@ task_terminate_internal( /* * Destroy the IPC space, leaving just a reference for it. */ - ipc_space_destroy(task->itk_space); - -#ifdef __ppc__ - /* - * PPC51: ppc64 is limited to 51-bit addresses. - */ - pmap_unmap_sharedpage(task->map->pmap); /* Unmap commpage */ -#endif /* __ppc__ */ + ipc_space_terminate(task->itk_space); if (vm_map_has_4GB_pagezero(task->map)) vm_map_clear_4GB_pagezero(task->map); @@ -693,6 +799,7 @@ task_terminate_internal( lck_mtx_lock(&tasks_threads_lock); queue_remove(&tasks, task, task_t, tasks); + queue_enter(&terminated_tasks, task, task_t, tasks); tasks_count--; lck_mtx_unlock(&tasks_threads_lock); @@ -702,10 +809,6 @@ task_terminate_internal( */ thread_interrupt_level(interrupt_save); -#if __ppc__ - perfmon_release_facility(task); // notify the perfmon facility -#endif - /* * Get rid of the task active reference on itself. */ @@ -790,20 +893,10 @@ task_complete_halt(task_t task) assert(task->halting); assert(task == current_task()); - /* - * Give the machine dependent code a chance - * 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(); - /* * Wait for the other threads to get shut down. * When the last other thread is reaped, we'll be - * worken up. + * woken up. */ if (task->thread_count > 1) { assert_wait((event_t)&task->halting, THREAD_UNINT); @@ -813,6 +906,14 @@ task_complete_halt(task_t task) task_unlock(task); } + /* + * Give the machine dependent code a chance + * to perform cleanup of task-level resources + * associated with the current thread before + * ripping apart the task. + */ + machine_task_terminate(task); + /* * Destroy all synchronizers owned by the task. */ @@ -896,6 +997,28 @@ task_hold( return (KERN_SUCCESS); } +kern_return_t +task_wait( + task_t task, + boolean_t until_not_runnable) +{ + if (task == TASK_NULL) + return (KERN_INVALID_ARGUMENT); + + task_lock(task); + + if (!task->active) { + task_unlock(task); + + return (KERN_FAILURE); + } + + task_wait_locked(task, until_not_runnable); + task_unlock(task); + + return (KERN_SUCCESS); +} + /* * task_wait_locked: * @@ -906,7 +1029,8 @@ task_hold( */ void task_wait_locked( - register task_t task) + register task_t task, + boolean_t until_not_runnable) { register thread_t thread, self; @@ -922,7 +1046,7 @@ task_wait_locked( */ queue_iterate(&task->threads, thread, thread_t, task_threads) { if (thread != self) - thread_wait(thread); + thread_wait(thread, until_not_runnable); } } @@ -1090,26 +1214,11 @@ task_threads( return (KERN_SUCCESS); } -/* - * task_suspend: - * - * Implement a user-level suspension on a task. - * - * Conditions: - * The caller holds a reference to the task - */ -kern_return_t -task_suspend( +static kern_return_t +place_task_hold ( register task_t task) -{ - if (task == TASK_NULL || task == kernel_task) - return (KERN_INVALID_ARGUMENT); - - task_lock(task); - +{ if (!task->active) { - task_unlock(task); - return (KERN_FAILURE); } @@ -1118,8 +1227,6 @@ task_suspend( * If the stop count was positive, the task is * already stopped and we can exit. */ - task_unlock(task); - return (KERN_SUCCESS); } @@ -1130,11 +1237,71 @@ task_suspend( * to stop executing user code. */ task_hold_locked(task); - task_wait_locked(task); + task_wait_locked(task, TRUE); + + return (KERN_SUCCESS); +} + +static kern_return_t +release_task_hold ( + register task_t task, + boolean_t pidresume) +{ + register boolean_t release = FALSE; + + if (!task->active) { + return (KERN_FAILURE); + } + + if (pidresume) { + if (task->pidsuspended == FALSE) { + return (KERN_FAILURE); + } + task->pidsuspended = FALSE; + } + + if (task->user_stop_count > (task->pidsuspended ? 1 : 0)) { + if (--task->user_stop_count == 0) { + release = TRUE; + } + } + else { + return (KERN_FAILURE); + } + + /* + * Release the task if necessary. + */ + if (release) + task_release_locked(task); + + return (KERN_SUCCESS); +} + +/* + * task_suspend: + * + * Implement a user-level suspension on a task. + * + * Conditions: + * The caller holds a reference to the task + */ +kern_return_t +task_suspend( + register task_t task) +{ + kern_return_t kr; + + if (task == TASK_NULL || task == kernel_task) + return (KERN_INVALID_ARGUMENT); + + task_lock(task); + + kr = place_task_hold(task); task_unlock(task); - return (KERN_SUCCESS); + return (kr); } /* @@ -1148,40 +1315,192 @@ kern_return_t task_resume( register task_t task) { - register boolean_t release = FALSE; + kern_return_t kr; if (task == TASK_NULL || task == kernel_task) return (KERN_INVALID_ARGUMENT); task_lock(task); - if (!task->active) { - task_unlock(task); + kr = release_task_hold(task, FALSE); - return (KERN_FAILURE); + task_unlock(task); + + return (kr); +} + +kern_return_t +task_pidsuspend_locked(task_t task) +{ + kern_return_t kr; + + if (task->pidsuspended) { + kr = KERN_FAILURE; + goto out; } - if (task->user_stop_count > 0) { - if (--task->user_stop_count == 0) - release = TRUE; + task->pidsuspended = TRUE; + + kr = place_task_hold(task); + if (kr != KERN_SUCCESS) { + task->pidsuspended = FALSE; } - else { - task_unlock(task); +out: + return(kr); +} - return (KERN_FAILURE); + +/* + * task_pidsuspend: + * + * Suspends a task by placing a hold on its threads. + * + * Conditions: + * The caller holds a reference to the task + */ +kern_return_t +task_pidsuspend( + register task_t task) +{ + kern_return_t kr; + + if (task == TASK_NULL || task == kernel_task) + return (KERN_INVALID_ARGUMENT); + + task_lock(task); + + kr = task_pidsuspend_locked(task); + + task_unlock(task); + + return (kr); +} + +/* If enabled, we bring all the frozen pages back in prior to resumption; otherwise, they're faulted back in on demand */ +#define THAW_ON_RESUME 1 + +/* + * task_pidresume: + * Resumes a previously suspended task. + * + * Conditions: + * The caller holds a reference to the task + */ +kern_return_t +task_pidresume( + register task_t task) +{ + kern_return_t kr; +#if (CONFIG_FREEZE && THAW_ON_RESUME) + boolean_t frozen; +#endif + + if (task == TASK_NULL || task == kernel_task) + return (KERN_INVALID_ARGUMENT); + + task_lock(task); + +#if (CONFIG_FREEZE && THAW_ON_RESUME) + frozen = task->frozen; + task->frozen = FALSE; +#endif + + kr = release_task_hold(task, TRUE); + + task_unlock(task); + +#if (CONFIG_FREEZE && THAW_ON_RESUME) + if ((kr == KERN_SUCCESS) && (frozen == TRUE)) { + kr = vm_map_thaw(task->map); } +#endif - /* - * Release the task if necessary. - */ - if (release) - task_release_locked(task); + return (kr); +} + +#if CONFIG_FREEZE + +/* + * task_freeze: + * + * Freeze a task. + * + * Conditions: + * The caller holds a reference to the task + */ +kern_return_t +task_freeze( + register task_t task, + uint32_t *purgeable_count, + uint32_t *wired_count, + uint32_t *clean_count, + uint32_t *dirty_count, + uint32_t dirty_budget, + boolean_t *shared, + boolean_t walk_only) +{ + kern_return_t kr; + + if (task == TASK_NULL || task == kernel_task) + return (KERN_INVALID_ARGUMENT); + + task_lock(task); + + if (task->frozen) { + task_unlock(task); + return (KERN_FAILURE); + } + + if (walk_only == FALSE) { + task->frozen = TRUE; + } task_unlock(task); - return (KERN_SUCCESS); + if (walk_only) { + kr = vm_map_freeze_walk(task->map, purgeable_count, wired_count, clean_count, dirty_count, dirty_budget, shared); + } else { + kr = vm_map_freeze(task->map, purgeable_count, wired_count, clean_count, dirty_count, dirty_budget, shared); + } + + return (kr); } +/* + * task_thaw: + * + * Thaw a currently frozen task. + * + * Conditions: + * The caller holds a reference to the task + */ +kern_return_t +task_thaw( + register task_t task) +{ + kern_return_t kr; + + if (task == TASK_NULL || task == kernel_task) + return (KERN_INVALID_ARGUMENT); + + task_lock(task); + + if (!task->frozen) { + task_unlock(task); + return (KERN_FAILURE); + } + + task->frozen = FALSE; + + task_unlock(task); + + kr = vm_map_thaw(task->map); + + return (kr); +} + +#endif /* CONFIG_FREEZE */ + kern_return_t host_security_set_task_token( host_security_t host_security, @@ -1214,32 +1533,6 @@ host_security_set_task_token( return(kr); } -/* - * Utility routine to set a ledger - */ -kern_return_t -task_set_ledger( - task_t task, - ledger_t wired, - ledger_t paged) -{ - if (task == TASK_NULL) - return(KERN_INVALID_ARGUMENT); - - task_lock(task); - if (wired) { - ipc_port_release_send(task->wired_ledger_port); - task->wired_ledger_port = ledger_copy(wired); - } - if (paged) { - ipc_port_release_send(task->paged_ledger_port); - task->paged_ledger_port = ledger_copy(paged); - } - task_unlock(task); - - return(KERN_SUCCESS); -} - /* * This routine was added, pretty much exclusively, for registering the * RPC glue vector for in-kernel short circuited tasks. Rather than @@ -1370,6 +1663,51 @@ task_info( break; } + case MACH_TASK_BASIC_INFO: + { + mach_task_basic_info_t basic_info; + vm_map_t map; + clock_sec_t secs; + clock_usec_t usecs; + + if (*task_info_count < MACH_TASK_BASIC_INFO_COUNT) { + error = KERN_INVALID_ARGUMENT; + break; + } + + basic_info = (mach_task_basic_info_t)task_info_out; + + map = (task == kernel_task) ? kernel_map : task->map; + + basic_info->virtual_size = map->size; + + basic_info->resident_size = + (mach_vm_size_t)(pmap_resident_count(map->pmap)); + basic_info->resident_size *= PAGE_SIZE_64; + + basic_info->resident_size_max = + (mach_vm_size_t)(pmap_resident_max(map->pmap)); + basic_info->resident_size_max *= PAGE_SIZE_64; + + 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, &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 = MACH_TASK_BASIC_INFO_COUNT; + break; + } + case TASK_THREAD_TIMES_INFO: { register task_thread_times_info_t times_info; @@ -1420,14 +1758,27 @@ task_info( queue_iterate(&task->threads, thread, thread_t, task_threads) { uint64_t tval; + spl_t x; + + x = splsched(); + thread_lock(thread); tval = timer_grab(&thread->user_timer); info->threads_user += tval; info->total_user += tval; tval = timer_grab(&thread->system_timer); - info->threads_system += tval; - info->total_system += tval; + if (thread->precise_user_kernel_time) { + info->threads_system += tval; + info->total_system += tval; + } else { + /* system_timer may represent either sys or user */ + info->threads_user += tval; + info->total_user += tval; + } + + thread_unlock(thread); + splx(x); } @@ -1439,17 +1790,126 @@ task_info( { task_dyld_info_t info; - if (*task_info_count < TASK_DYLD_INFO_COUNT) { + /* + * We added the format field to TASK_DYLD_INFO output. For + * temporary backward compatibility, accept the fact that + * clients may ask for the old version - distinquished by the + * size of the expected result structure. + */ +#define TASK_LEGACY_DYLD_INFO_COUNT \ + offsetof(struct task_dyld_info, all_image_info_format)/sizeof(natural_t) + + if (*task_info_count < TASK_LEGACY_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; + + /* only set format on output for those expecting it */ + if (*task_info_count >= TASK_DYLD_INFO_COUNT) { + info->all_image_info_format = task_has_64BitAddr(task) ? + TASK_DYLD_ALL_IMAGE_INFO_64 : + TASK_DYLD_ALL_IMAGE_INFO_32 ; + *task_info_count = TASK_DYLD_INFO_COUNT; + } else { + *task_info_count = TASK_LEGACY_DYLD_INFO_COUNT; + } + break; + } + + case TASK_EXTMOD_INFO: + { + task_extmod_info_t info; + void *p; + + if (*task_info_count < TASK_EXTMOD_INFO_COUNT) { + error = KERN_INVALID_ARGUMENT; + break; + } + + info = (task_extmod_info_t)task_info_out; + + p = get_bsdtask_info(task); + if (p) { + proc_getexecutableuuid(p, info->task_uuid, sizeof(info->task_uuid)); + } else { + bzero(info->task_uuid, sizeof(info->task_uuid)); + } + info->extmod_statistics = task->extmod_statistics; + *task_info_count = TASK_EXTMOD_INFO_COUNT; + break; } + case TASK_KERNELMEMORY_INFO: + { + task_kernelmemory_info_t tkm_info; + ledger_amount_t credit, debit; + + if (*task_info_count < TASK_KERNELMEMORY_INFO_COUNT) { + error = KERN_INVALID_ARGUMENT; + break; + } + + tkm_info = (task_kernelmemory_info_t) task_info_out; + tkm_info->total_palloc = 0; + tkm_info->total_pfree = 0; + tkm_info->total_salloc = 0; + tkm_info->total_sfree = 0; + + if (task == kernel_task) { + /* + * All shared allocs/frees from other tasks count against + * the kernel private memory usage. If we are looking up + * info for the kernel task, gather from everywhere. + */ + task_unlock(task); + + /* start by accounting for all the terminated tasks against the kernel */ + tkm_info->total_palloc = tasks_tkm_private.alloc + tasks_tkm_shared.alloc; + tkm_info->total_pfree = tasks_tkm_private.free + tasks_tkm_shared.free; + + /* count all other task/thread shared alloc/free against the kernel */ + lck_mtx_lock(&tasks_threads_lock); + + /* XXX this really shouldn't be using the function parameter 'task' as a local var! */ + queue_iterate(&tasks, task, task_t, tasks) { + if (task == kernel_task) { + if (ledger_get_entries(task->ledger, + task_ledgers.tkm_private, &credit, + &debit) == KERN_SUCCESS) { + tkm_info->total_palloc += credit; + tkm_info->total_pfree += debit; + } + } + if (!ledger_get_entries(task->ledger, + task_ledgers.tkm_shared, &credit, &debit)) { + tkm_info->total_palloc += credit; + tkm_info->total_pfree += debit; + } + } + lck_mtx_unlock(&tasks_threads_lock); + } else { + if (!ledger_get_entries(task->ledger, + task_ledgers.tkm_private, &credit, &debit)) { + tkm_info->total_palloc = credit; + tkm_info->total_pfree = debit; + } + if (!ledger_get_entries(task->ledger, + task_ledgers.tkm_shared, &credit, &debit)) { + tkm_info->total_salloc = credit; + tkm_info->total_sfree = debit; + } + task_unlock(task); + } + + *task_info_count = TASK_KERNELMEMORY_INFO_COUNT; + return KERN_SUCCESS; + } + /* OBSOLETE */ case TASK_SCHED_FIFO_INFO: { @@ -1460,12 +1920,15 @@ task_info( } error = KERN_INVALID_POLICY; + break; } /* OBSOLETE */ case TASK_SCHED_RR_INFO: { register policy_rr_base_t rr_base; + uint32_t quantum_time; + uint64_t quantum_ns; if (*task_info_count < POLICY_RR_BASE_COUNT) { error = KERN_INVALID_ARGUMENT; @@ -1481,7 +1944,10 @@ task_info( rr_base->base_priority = task->priority; - rr_base->quantum = std_quantum_us / 1000; + quantum_time = SCHED(initial_quantum_size)(THREAD_NULL); + absolutetime_to_nanoseconds(quantum_time, &quantum_ns); + + rr_base->quantum = (uint32_t)(quantum_ns / 1000 / 1000); *task_info_count = POLICY_RR_BASE_COUNT; break; @@ -1546,6 +2012,7 @@ task_info( case TASK_SCHED_INFO: error = KERN_INVALID_ARGUMENT; + break; case TASK_EVENTS_INFO: { @@ -1571,7 +2038,9 @@ task_info( events_info->csw = task->c_switch; queue_iterate(&task->threads, thread, thread_t, task_threads) { - events_info->csw += thread->c_switch; + events_info->csw += thread->c_switch; + events_info->syscalls_mach += thread->syscalls_mach; + events_info->syscalls_unix += thread->syscalls_unix; } @@ -1586,6 +2055,60 @@ task_info( } error = task_affinity_info(task, task_info_out, task_info_count); + break; + } + + case TASK_POWER_INFO: + { + task_power_info_t info; + thread_t thread; + ledger_amount_t tmp; + + if (*task_info_count < TASK_POWER_INFO_COUNT) { + error = KERN_INVALID_ARGUMENT; + break; + } + + info = (task_power_info_t)task_info_out; + + ledger_get_entries(task->ledger, task_ledgers.interrupt_wakeups, + (ledger_amount_t *)&info->task_interrupt_wakeups, &tmp); + ledger_get_entries(task->ledger, task_ledgers.platform_idle_wakeups, + (ledger_amount_t *)&info->task_platform_idle_wakeups, &tmp); + + info->task_timer_wakeups_bin_1 = task->task_timer_wakeups_bin_1; + info->task_timer_wakeups_bin_2 = task->task_timer_wakeups_bin_2; + + info->total_user = task->total_user_time; + info->total_system = task->total_system_time; + + queue_iterate(&task->threads, thread, thread_t, task_threads) { + uint64_t tval; + spl_t x; + + if ((task == kernel_task) && (thread->priority == IDLEPRI) && (thread->sched_pri == IDLEPRI)) + continue; + x = splsched(); + thread_lock(thread); + + info->task_timer_wakeups_bin_1 += thread->thread_timer_wakeups_bin_1; + info->task_timer_wakeups_bin_2 += thread->thread_timer_wakeups_bin_2; + + tval = timer_grab(&thread->user_timer); + info->total_user += tval; + + tval = timer_grab(&thread->system_timer); + if (thread->precise_user_kernel_time) { + info->total_system += tval; + } else { + /* system_timer may represent either sys or user */ + info->total_user += tval; + } + + thread_unlock(thread); + splx(x); + } + break; } default: @@ -1602,6 +2125,7 @@ task_vtimer_set( integer_t which) { thread_t thread; + spl_t x; /* assert(task == current_task()); */ /* bogus assert 4803227 4807483 */ @@ -1613,21 +2137,36 @@ task_vtimer_set( case TASK_VTIMER_USER: queue_iterate(&task->threads, thread, thread_t, task_threads) { - thread->vtimer_user_save = timer_grab(&thread->user_timer); + x = splsched(); + thread_lock(thread); + if (thread->precise_user_kernel_time) + thread->vtimer_user_save = timer_grab(&thread->user_timer); + else + thread->vtimer_user_save = timer_grab(&thread->system_timer); + thread_unlock(thread); + splx(x); } break; case TASK_VTIMER_PROF: queue_iterate(&task->threads, thread, thread_t, task_threads) { + x = splsched(); + thread_lock(thread); thread->vtimer_prof_save = timer_grab(&thread->user_timer); thread->vtimer_prof_save += timer_grab(&thread->system_timer); + thread_unlock(thread); + splx(x); } break; case TASK_VTIMER_RLIM: queue_iterate(&task->threads, thread, thread_t, task_threads) { + x = splsched(); + thread_lock(thread); thread->vtimer_rlim_save = timer_grab(&thread->user_timer); thread->vtimer_rlim_save += timer_grab(&thread->system_timer); + thread_unlock(thread); + splx(x); } break; } @@ -1670,8 +2209,13 @@ __unused switch (which) { case TASK_VTIMER_USER: - tdelt = (uint32_t)timer_delta(&thread->user_timer, + if (thread->precise_user_kernel_time) { + tdelt = (uint32_t)timer_delta(&thread->user_timer, &thread->vtimer_user_save); + } else { + tdelt = (uint32_t)timer_delta(&thread->system_timer, + &thread->vtimer_user_save); + } absolutetime_to_microtime(tdelt, &secs, microsecs); break; @@ -1942,6 +2486,24 @@ task_reference( task_reference_internal(task); } +/* + * This routine is called always with task lock held. + * And it returns a thread handle without reference as the caller + * operates on it under the task lock held. + */ +thread_t +task_findtid(task_t task, uint64_t tid) +{ + thread_t thread= THREAD_NULL; + + queue_iterate(&task->threads, thread, thread_t, task_threads) { + if (thread->thread_id == tid) + return(thread); + } + return(THREAD_NULL); +} + + #if CONFIG_MACF_MACH /* * Protect 2 task labels against modification by adding a reference on