/* * Copyright (c) 2000-2010 Apple Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. The rights granted to you under the License * may not be used to create, or enable the creation or redistribution of, * unlawful or unlicensed copies of an Apple operating system, or to * circumvent, violate, or enable the circumvention or violation of, any * terms of an Apple operating system software license agreement. * * Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* * @OSF_FREE_COPYRIGHT@ */ /* * Mach Operating System * Copyright (c) 1991,1990,1989,1988 Carnegie Mellon University * All Rights Reserved. * * Permission to use, copy, modify and distribute this software and its * documentation is hereby granted, provided that both the copyright * notice and this permission notice appear in all copies of the * software, derivative works or modified versions, and any portions * thereof, and that both notices appear in supporting documentation. * * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. * * Carnegie Mellon requests users of this software to return to * * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU * School of Computer Science * Carnegie Mellon University * Pittsburgh PA 15213-3890 * * any improvements or extensions that they make and grant Carnegie Mellon * the rights to redistribute these changes. */ /* */ /* * File: task.h * Author: Avadis Tevanian, Jr. * * This file contains the structure definitions for tasks. * */ /* * Copyright (c) 1993 The University of Utah and * the Computer Systems Laboratory (CSL). All rights reserved. * * Permission to use, copy, modify and distribute this software and its * documentation is hereby granted, provided that both the copyright * notice and this permission notice appear in all copies of the * software, derivative works or modified versions, and any portions * thereof, and that both notices appear in supporting documentation. * * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS * IS" CONDITION. THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. * * CSL requests users of this software to return to csl-dist@cs.utah.edu any * improvements that they make and grant CSL redistribution rights. * */ /* * NOTICE: This file was modified by McAfee Research in 2004 to introduce * support for mandatory and extensible security protections. This notice * is included in support of clause 2.2 (b) of the Apple Public License, * Version 2.0. * Copyright (c) 2005 SPARTA, Inc. */ #ifndef _KERN_TASK_H_ #define _KERN_TASK_H_ #include #include #include #ifdef MACH_KERNEL_PRIVATE #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #endif /* MACH_KERNEL_PRIVATE */ #ifdef XNU_KERNEL_PRIVATE #include /* defns for task->rsu_controldata */ #define TASK_POLICY_CPU_RESOURCE_USAGE 0 #define TASK_POLICY_WIREDMEM_RESOURCE_USAGE 1 #define TASK_POLICY_VIRTUALMEM_RESOURCE_USAGE 2 #define TASK_POLICY_DISK_RESOURCE_USAGE 3 #define TASK_POLICY_NETWORK_RESOURCE_USAGE 4 #define TASK_POLICY_POWER_RESOURCE_USAGE 5 #define TASK_POLICY_RESOURCE_USAGE_COUNT 6 #define TASK_POLICY_CPUMON_DISABLE 0xFF #define TASK_POLICY_CPUMON_DEFAULTS 0xFE /* Resource usage/low resource attributes */ #define TASK_POLICY_RESOURCE_ATTRIBUTE_NONE 0x00 #define TASK_POLICY_RESOURCE_ATTRIBUTE_THROTTLE 0x01 #define TASK_POLICY_RESOURCE_ATTRIBUTE_SUSPEND 0x02 #define TASK_POLICY_RESOURCE_ATTRIBUTE_TERMINATE 0x03 #define TASK_POLICY_RESOURCE_ATTRIBUTE_NOTIFY_KQ 0x04 #define TASK_POLICY_RESOURCE_ATTRIBUTE_NOTIFY_EXC 0x05 #define TASK_POLICY_RESOURCE_ATTRIBUTE_DEFAULT TASK_POLICY_RESOURCE_ATTRIBUTE_NONE #endif /* XNU_KERNEL_PRIVATE */ #ifdef MACH_KERNEL_PRIVATE #include #ifdef CONFIG_ATM #include #endif struct _cpu_time_qos_stats { uint64_t cpu_time_qos_default; uint64_t cpu_time_qos_maintenance; uint64_t cpu_time_qos_background; uint64_t cpu_time_qos_utility; uint64_t cpu_time_qos_legacy; uint64_t cpu_time_qos_user_initiated; uint64_t cpu_time_qos_user_interactive; }; #ifdef CONFIG_BANK #include #endif struct task { /* Synchronization/destruction information */ decl_lck_mtx_data(,lock) /* Task's lock */ uint32_t ref_count; /* Number of references to me */ boolean_t active; /* Task has not been terminated */ boolean_t halting; /* Task is being halted */ /* Miscellaneous */ vm_map_t map; /* Address space description */ queue_chain_t tasks; /* global list of tasks */ void *user_data; /* Arbitrary data settable via IPC */ #if defined(CONFIG_SCHED_MULTIQ) sched_group_t sched_group; #endif /* defined(CONFIG_SCHED_MULTIQ) */ /* Threads in this task */ queue_head_t threads; processor_set_t pset_hint; struct affinity_space *affinity_space; int thread_count; uint32_t active_thread_count; int suspend_count; /* Internal scheduling only */ /* User-visible scheduling information */ integer_t user_stop_count; /* outstanding stops */ integer_t legacy_stop_count; /* outstanding legacy stops */ integer_t priority; /* base priority for threads */ integer_t max_priority; /* maximum priority for threads */ integer_t importance; /* priority offset (BSD 'nice' value) */ /* Task security and audit tokens */ security_token_t sec_token; audit_token_t audit_token; /* Statistics */ uint64_t total_user_time; /* terminated threads only */ uint64_t total_system_time; /* Virtual timers */ uint32_t vtimers; /* IPC structures */ decl_lck_mtx_data(,itk_lock_data) struct ipc_port *itk_self; /* not a right, doesn't hold ref */ struct ipc_port *itk_nself; /* not a right, doesn't hold ref */ struct ipc_port *itk_sself; /* a send right */ struct exception_action exc_actions[EXC_TYPES_COUNT]; /* a send right each valid element */ struct ipc_port *itk_host; /* a send right */ struct ipc_port *itk_bootstrap; /* a send right */ struct ipc_port *itk_seatbelt; /* a send right */ struct ipc_port *itk_gssd; /* yet another send right */ struct ipc_port *itk_debug_control; /* send right for debugmode communications */ struct ipc_port *itk_task_access; /* and another send right */ struct ipc_port *itk_resume; /* a receive right to resume this task */ struct ipc_port *itk_registered[TASK_PORT_REGISTER_MAX]; /* all send rights */ struct ipc_space *itk_space; /* Synchronizer ownership information */ queue_head_t semaphore_list; /* list of owned semaphores */ int semaphores_owned; /* number of semaphores owned */ ledger_t ledger; unsigned int priv_flags; /* privilege resource flags */ #define VM_BACKING_STORE_PRIV 0x1 MACHINE_TASK integer_t faults; /* faults counter */ integer_t pageins; /* pageins counter */ integer_t cow_faults; /* copy on write fault counter */ integer_t messages_sent; /* messages sent counter */ integer_t messages_received; /* messages received counter */ integer_t syscalls_mach; /* mach system call counter */ integer_t syscalls_unix; /* unix system call counter */ uint32_t c_switch; /* total context switches */ uint32_t p_switch; /* total processor switches */ uint32_t ps_switch; /* total pset switches */ zinfo_usage_t tkm_zinfo; /* per-task, per-zone usage statistics */ #ifdef MACH_BSD void *bsd_info; #endif struct vm_shared_region *shared_region; volatile uint32_t t_flags; /* general-purpose task flags protected by task_lock (TL) */ #define TF_64B_ADDR 0x00000001 /* task has 64-bit addressing */ #define TF_64B_DATA 0x00000002 /* task has 64-bit data registers */ #define TF_CPUMON_WARNING 0x00000004 /* task has at least one thread in CPU usage warning zone */ #define TF_WAKEMON_WARNING 0x00000008 /* task is in wakeups monitor warning zone */ #define TF_TELEMETRY (TF_CPUMON_WARNING | TF_WAKEMON_WARNING) /* task is a telemetry participant */ #define TF_GPU_DENIED 0x00000010 /* task is not allowed to access the GPU */ #define task_has_64BitAddr(task) \ (((task)->t_flags & TF_64B_ADDR) != 0) #define task_set_64BitAddr(task) \ ((task)->t_flags |= TF_64B_ADDR) #define task_clear_64BitAddr(task) \ ((task)->t_flags &= ~TF_64B_ADDR) #define task_has_64BitData(task) \ (((task)->t_flags & TF_64B_DATA) != 0) mach_vm_address_t all_image_info_addr; /* dyld __all_image_info */ mach_vm_size_t all_image_info_size; /* section location and size */ #if CONFIG_COUNTERS || KPERF #define TASK_PMC_FLAG 0x1 /* Bit in "t_chud" signifying PMC interest */ #define TASK_KPC_FORCED_ALL_CTRS 0x2 /* Bit in "t_chud" signifying KPC forced all counters */ uint32_t t_chud; /* CHUD flags, used for Shark */ #endif boolean_t pidsuspended; /* pid_suspend called; no threads can execute */ boolean_t frozen; /* frozen; private resident pages committed to swap */ boolean_t changing_freeze_state; /* in the process of freezing or thawing */ uint16_t policy_ru_cpu :4, policy_ru_cpu_ext :4, applied_ru_cpu :4, applied_ru_cpu_ext :4; uint8_t rusage_cpu_flags; uint8_t rusage_cpu_percentage; /* Task-wide CPU limit percentage */ uint64_t rusage_cpu_interval; /* Task-wide CPU limit interval */ uint8_t rusage_cpu_perthr_percentage; /* Per-thread CPU limit percentage */ uint64_t rusage_cpu_perthr_interval; /* Per-thread CPU limit interval */ uint64_t rusage_cpu_deadline; thread_call_t rusage_cpu_callt; #if CONFIG_ATM struct atm_task_descriptor *atm_context; /* pointer to per task atm descriptor */ #endif #if CONFIG_BANK struct bank_task *bank_context; /* pointer to per task bank structure */ #endif #if IMPORTANCE_INHERITANCE struct ipc_importance_task *task_imp_base; /* Base of IPC importance chain */ #endif /* IMPORTANCE_INHERITANCE */ vm_extmod_statistics_data_t extmod_statistics; #if MACH_ASSERT int8_t suspends_outstanding; /* suspends this task performed in excess of resumes */ #endif struct task_requested_policy requested_policy; struct task_effective_policy effective_policy; struct task_pended_policy pended_policy; /* * Can be merged with imp_donor bits, once the IMPORTANCE_INHERITANCE macro goes away. */ uint32_t low_mem_notified_warn :1, /* warning low memory notification is sent to the task */ low_mem_notified_critical :1, /* critical low memory notification is sent to the task */ purged_memory_warn :1, /* purgeable memory of the task is purged for warning level pressure */ purged_memory_critical :1, /* purgeable memory of the task is purged for critical level pressure */ mem_notify_reserved :28; /* reserved for future use */ io_stat_info_t task_io_stats; /* * The cpu_time_qos_stats fields are protected by the task lock */ struct _cpu_time_qos_stats cpu_time_qos_stats; /* Statistics accumulated for terminated threads from this task */ uint32_t task_timer_wakeups_bin_1; uint32_t task_timer_wakeups_bin_2; uint64_t task_gpu_ns; /* # of purgeable volatile VM objects owned by this task: */ int task_volatile_objects; /* # of purgeable but not volatile VM objects owned by this task: */ int task_nonvolatile_objects; boolean_t task_purgeable_disowning; boolean_t task_purgeable_disowned; /* Coalition is set in task_create_internal and unset in task_deallocate_internal, so it can be referenced without the task lock. */ coalition_t coalition; /* coalition this task belongs to */ /* These fields are protected by coalition->lock, not the task lock. */ queue_chain_t coalition_tasks; /* list of tasks in the coalition */ #if HYPERVISOR void *hv_task_target; /* hypervisor virtual machine object associated with this task */ #endif /* HYPERVISOR */ }; #define task_lock(task) lck_mtx_lock(&(task)->lock) #define task_lock_assert_owned(task) lck_mtx_assert(&(task)->lock, LCK_MTX_ASSERT_OWNED) #define task_lock_try(task) lck_mtx_try_lock(&(task)->lock) #define task_unlock(task) lck_mtx_unlock(&(task)->lock) #define itk_lock_init(task) lck_mtx_init(&(task)->itk_lock_data, &ipc_lck_grp, &ipc_lck_attr) #define itk_lock_destroy(task) lck_mtx_destroy(&(task)->itk_lock_data, &ipc_lck_grp) #define itk_lock(task) lck_mtx_lock(&(task)->itk_lock_data) #define itk_unlock(task) lck_mtx_unlock(&(task)->itk_lock_data) #define TASK_REFERENCE_LEAK_DEBUG 0 #if TASK_REFERENCE_LEAK_DEBUG extern void task_reference_internal(task_t task); extern uint32_t task_deallocate_internal(task_t task); #else #define task_reference_internal(task) \ (void)hw_atomic_add(&(task)->ref_count, 1) #define task_deallocate_internal(task) \ hw_atomic_sub(&(task)->ref_count, 1) #endif #define task_reference(task) \ MACRO_BEGIN \ if ((task) != TASK_NULL) \ task_reference_internal(task); \ MACRO_END extern kern_return_t kernel_task_create( task_t task, vm_offset_t map_base, vm_size_t map_size, task_t *child); /* Initialize task module */ extern void task_init(void); /* coalition_init() calls this to initialize ledgers before task_init() */ extern void init_task_ledgers(void); #define current_task_fast() (current_thread()->task) #define current_task() current_task_fast() extern lck_attr_t task_lck_attr; extern lck_grp_t task_lck_grp; #else /* MACH_KERNEL_PRIVATE */ __BEGIN_DECLS extern task_t current_task(void); extern void task_reference(task_t task); __END_DECLS #endif /* MACH_KERNEL_PRIVATE */ __BEGIN_DECLS #ifdef XNU_KERNEL_PRIVATE /* Hold all threads in a task */ extern kern_return_t task_hold( task_t task); /* Wait for task to stop running, either just to get off CPU or to cease being runnable */ extern kern_return_t task_wait( task_t task, boolean_t until_not_runnable); /* Release hold on all threads in a task */ extern kern_return_t task_release( task_t task); /* Suspends a task by placing a hold on its threads */ extern kern_return_t task_pidsuspend( task_t task); extern kern_return_t task_pidsuspend_locked( task_t task); /* Resumes a previously paused task */ extern kern_return_t task_pidresume( task_t task); extern kern_return_t task_send_trace_memory( task_t task, uint32_t pid, uint64_t uniqueid); #if CONFIG_FREEZE /* Freeze a task's resident pages */ extern kern_return_t task_freeze( 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); /* Thaw a currently frozen task */ extern kern_return_t task_thaw( task_t task); #endif /* CONFIG_FREEZE */ /* Halt all other threads in the current task */ extern kern_return_t task_start_halt( task_t task); /* Wait for other threads to halt and free halting task resources */ extern void task_complete_halt( task_t task); extern kern_return_t task_terminate_internal( task_t task); extern kern_return_t task_create_internal( task_t parent_task, coalition_t parent_coalition, boolean_t inherit_memory, boolean_t is_64bit, task_t *child_task); /* OUT */ extern kern_return_t task_importance( task_t task, integer_t importance); extern void task_power_info_locked( task_t task, task_power_info_t info, gpu_energy_data_t gpu_energy); extern uint64_t task_gpu_utilisation( task_t task); extern void task_vtimer_set( task_t task, integer_t which); extern void task_vtimer_clear( task_t task, integer_t which); extern void task_vtimer_update( task_t task, integer_t which, uint32_t *microsecs); #define TASK_VTIMER_USER 0x01 #define TASK_VTIMER_PROF 0x02 #define TASK_VTIMER_RLIM 0x04 extern void task_set_64bit( task_t task, boolean_t is64bit); extern void task_backing_store_privileged( task_t task); extern void task_set_dyld_info( task_t task, mach_vm_address_t addr, mach_vm_size_t size); /* Get number of activations in a task */ extern int get_task_numacts( task_t task); extern int get_task_numactivethreads(task_t task); /* JMM - should just be temporary (implementation in bsd_kern still) */ extern void set_bsdtask_info(task_t,void *); extern vm_map_t get_task_map_reference(task_t); extern vm_map_t swap_task_map(task_t, thread_t, vm_map_t, boolean_t); extern pmap_t get_task_pmap(task_t); extern uint64_t get_task_resident_size(task_t); extern uint64_t get_task_compressed(task_t); extern uint64_t get_task_resident_max(task_t); extern uint64_t get_task_phys_footprint(task_t); extern uint64_t get_task_phys_footprint_max(task_t); extern uint64_t get_task_purgeable_size(task_t); extern uint64_t get_task_cpu_time(task_t); extern kern_return_t task_set_phys_footprint_limit_internal(task_t, int, int *, boolean_t); extern kern_return_t task_get_phys_footprint_limit(task_t task, int *limit_mb); extern boolean_t is_kerneltask(task_t task); extern kern_return_t check_actforsig(task_t task, thread_t thread, int setast); extern kern_return_t machine_task_get_state( task_t task, int flavor, thread_state_t state, mach_msg_type_number_t *state_count); extern kern_return_t machine_task_set_state( task_t task, int flavor, thread_state_t state, mach_msg_type_number_t state_count); extern void machine_task_terminate(task_t task); struct _task_ledger_indices { int cpu_time; int tkm_private; int tkm_shared; int phys_mem; int wired_mem; int internal; int iokit_mapped; int alternate_accounting; int phys_footprint; int internal_compressed; int purgeable_volatile; int purgeable_nonvolatile; int purgeable_volatile_compressed; int purgeable_nonvolatile_compressed; int platform_idle_wakeups; int interrupt_wakeups; int sfi_wait_times[MAX_SFI_CLASS_ID]; #ifdef CONFIG_BANK int cpu_time_billed_to_me; int cpu_time_billed_to_others; #endif }; extern struct _task_ledger_indices task_ledgers; /* Begin task_policy */ /* value */ #define TASK_POLICY_DISABLE 0x0 #define TASK_POLICY_ENABLE 0x1 /* category */ #define TASK_POLICY_INTERNAL 0x0 #define TASK_POLICY_EXTERNAL 0x1 #define TASK_POLICY_ATTRIBUTE 0x2 /* for tracing */ #define TASK_POLICY_TASK 0x4 #define TASK_POLICY_THREAD 0x8 /* flavors (also DBG_IMPORTANCE subclasses 0x20 - 0x3F) */ /* internal or external, thread or task */ #define TASK_POLICY_DARWIN_BG 0x21 #define TASK_POLICY_IOPOL 0x22 #define TASK_POLICY_IO 0x23 #define TASK_POLICY_PASSIVE_IO 0x24 /* internal, task only */ #define TASK_POLICY_DARWIN_BG_IOPOL 0x27 /* task-only attributes */ #define TASK_POLICY_TAL 0x28 #define TASK_POLICY_BOOST 0x29 #define TASK_POLICY_ROLE 0x2A #define TASK_POLICY_SUPPRESSED_CPU 0x2B #define TASK_POLICY_TERMINATED 0x2C #define TASK_POLICY_NEW_SOCKETS_BG 0x2D #define TASK_POLICY_LOWPRI_CPU 0x2E #define TASK_POLICY_LATENCY_QOS 0x2F #define TASK_POLICY_THROUGH_QOS 0x30 #define TASK_POLICY_WATCHERS_BG 0x31 #define TASK_POLICY_SFI_MANAGED 0x34 #define TASK_POLICY_ALL_SOCKETS_BG 0x37 #define TASK_POLICY_BASE_LATENCY_AND_THROUGHPUT_QOS 0x39 /* latency as value1, throughput as value2 */ #define TASK_POLICY_OVERRIDE_LATENCY_AND_THROUGHPUT_QOS 0x3A /* latency as value1, throughput as value2 */ /* thread-only attributes */ #define TASK_POLICY_PIDBIND_BG 0x32 #define TASK_POLICY_WORKQ_BG 0x33 #define TASK_POLICY_QOS 0x35 #define TASK_POLICY_QOS_OVERRIDE 0x36 #define TASK_POLICY_QOS_AND_RELPRIO 0x38 /* QoS as value1, relative priority as value2 */ #define TASK_POLICY_MAX 0x3F /* The main entrance to task policy is this function */ extern void proc_set_task_policy(task_t task, thread_t thread, int category, int flavor, int value); extern int proc_get_task_policy(task_t task, thread_t thread, int category, int flavor); /* For attributes that have two scalars as input/output */ extern void proc_set_task_policy2(task_t task, thread_t thread, int category, int flavor, int value1, int value2); extern void proc_get_task_policy2(task_t task, thread_t thread, int category, int flavor, int *value1, int *value2); /* For use by kernel threads and others who don't hold a reference on the target thread */ extern void proc_set_task_policy_thread(task_t task, uint64_t tid, int category, int flavor, int value); extern void proc_set_task_spawnpolicy(task_t task, int apptype, int qos_clamp, ipc_port_t * portwatch_ports, int portwatch_count); extern void task_set_main_thread_qos(task_t task, thread_t main_thread); /* IO Throttle tiers */ #define THROTTLE_LEVEL_NONE -1 #define THROTTLE_LEVEL_TIER0 0 /* IOPOL_NORMAL, IOPOL_DEFAULT, IOPOL_PASSIVE */ #define THROTTLE_LEVEL_THROTTLED 1 #define THROTTLE_LEVEL_TIER1 1 /* IOPOL_STANDARD */ #define THROTTLE_LEVEL_TIER2 2 /* IOPOL_UTILITY */ #define THROTTLE_LEVEL_TIER3 3 /* IOPOL_THROTTLE */ #define THROTTLE_LEVEL_START 0 #define THROTTLE_LEVEL_END 3 #define THROTTLE_LEVEL_COMPRESSOR_TIER0 THROTTLE_LEVEL_TIER0 #define THROTTLE_LEVEL_COMPRESSOR_TIER1 THROTTLE_LEVEL_TIER1 #define THROTTLE_LEVEL_COMPRESSOR_TIER2 THROTTLE_LEVEL_TIER2 #define THROTTLE_LEVEL_PAGEOUT_THROTTLED THROTTLE_LEVEL_TIER2 #define THROTTLE_LEVEL_PAGEOUT_UNTHROTTLED THROTTLE_LEVEL_TIER1 #if CONFIG_IOSCHED #define IOSCHED_METADATA_TIER THROTTLE_LEVEL_TIER1 #endif /* CONFIG_IOSCHED */ extern int proc_apply_workq_bgthreadpolicy(thread_t thread); extern int proc_restore_workq_bgthreadpolicy(thread_t thread); extern int proc_get_darwinbgstate(task_t task, uint32_t *flagsp); extern boolean_t proc_task_is_tal(task_t task); extern integer_t task_grab_latency_qos(task_t task); extern void task_policy_create(task_t task, int parent_boosted); extern void thread_policy_create(thread_t thread); /* * for IPC importance hooks into task policy */ typedef struct task_pend_token { uint32_t tpt_update_sockets :1, tpt_update_timers :1, tpt_update_watchers :1, tpt_update_live_donor :1; } *task_pend_token_t; extern void task_policy_update_complete_unlocked(task_t task, thread_t thread, task_pend_token_t pend_token); extern void task_update_boost_locked(task_t task, boolean_t boost_active, task_pend_token_t pend_token); extern void task_set_boost_locked(task_t task, boolean_t boost_active); /* * Get effective policy * Only for use by relevant subsystem, should never be passed into a setter! */ extern int proc_get_effective_task_policy(task_t task, int flavor); extern int proc_get_effective_thread_policy(thread_t thread, int flavor); /* temporary compatibility */ int proc_setthread_saved_importance(thread_t thread, int importance); int proc_get_task_ruse_cpu(task_t task, uint32_t *policyp, uint8_t *percentagep, uint64_t *intervalp, uint64_t *deadlinep); int proc_set_task_ruse_cpu(task_t task, uint32_t policy, uint8_t percentage, uint64_t interval, uint64_t deadline, int cpumon_entitled); int proc_clear_task_ruse_cpu(task_t task, int cpumon_entitled); thread_t task_findtid(task_t, uint64_t); void set_thread_iotier_override(thread_t, int policy); boolean_t proc_thread_qos_add_override(task_t task, thread_t thread, uint64_t tid, int override_qos, boolean_t first_override_for_resource); boolean_t proc_thread_qos_remove_override(task_t task, thread_t thread, uint64_t tid); #define TASK_RUSECPU_FLAGS_PROC_LIMIT 0x01 #define TASK_RUSECPU_FLAGS_PERTHR_LIMIT 0x02 #define TASK_RUSECPU_FLAGS_DEADLINE 0x04 #define TASK_RUSECPU_FLAGS_FATAL_CPUMON 0x08 /* CPU usage monitor violations are fatal */ #define TASK_RUSECPU_FLAGS_FATAL_WAKEUPSMON 0x10 /* wakeups monitor violations are fatal */ #define TASK_RUSECPU_FLAGS_PHYS_FOOTPRINT_EXCEPTION 0x20 /* exceeding physical footprint generates EXC_RESOURCE */ /* BSD call back functions */ extern int proc_apply_resource_actions(void * p, int type, int action); extern int proc_restore_resource_actions(void * p, int type, int action); extern int task_restore_resource_actions(task_t task, int type); extern int task_clear_cpuusage(task_t task, int cpumon_entitled); extern kern_return_t task_wakeups_monitor_ctl(task_t task, uint32_t *rate_hz, int32_t *flags); extern kern_return_t task_cpu_usage_monitor_ctl(task_t task, uint32_t *flags); extern void task_importance_mark_donor(task_t task, boolean_t donating); extern void task_importance_mark_live_donor(task_t task, boolean_t donating); extern void task_importance_mark_receiver(task_t task, boolean_t receiving); extern void task_importance_mark_denap_receiver(task_t task, boolean_t denap); extern void task_importance_reset(task_t task); extern void task_atm_reset(task_t task); #if IMPORTANCE_INHERITANCE extern boolean_t task_is_importance_donor(task_t task); extern boolean_t task_is_marked_importance_donor(task_t task); extern boolean_t task_is_marked_live_importance_donor(task_t task); extern boolean_t task_is_importance_receiver(task_t task); extern boolean_t task_is_marked_importance_receiver(task_t task); extern boolean_t task_is_importance_denap_receiver(task_t task); extern boolean_t task_is_marked_importance_denap_receiver(task_t task); extern boolean_t task_is_importance_receiver_type(task_t task); extern int task_importance_hold_watchport_assertion(task_t target_task, uint32_t count); extern int task_importance_hold_internal_assertion(task_t target_task, uint32_t count); extern int task_importance_drop_internal_assertion(task_t target_task, uint32_t count); extern int task_importance_hold_file_lock_assertion(task_t target_task, uint32_t count); extern int task_importance_drop_file_lock_assertion(task_t target_task, uint32_t count); extern int task_importance_hold_legacy_external_assertion(task_t target_task, uint32_t count); extern int task_importance_drop_legacy_external_assertion(task_t target_task, uint32_t count); #endif /* IMPORTANCE_INHERITANCE */ extern boolean_t task_has_been_notified(task_t task, int pressurelevel); extern boolean_t task_used_for_purging(task_t task, int pressurelevel); extern void task_mark_has_been_notified(task_t task, int pressurelevel); extern void task_mark_used_for_purging(task_t task, int pressurelevel); extern void task_clear_has_been_notified(task_t task, int pressurelevel); extern void task_clear_used_for_purging(task_t task); extern int task_importance_estimate(task_t task); /* * This should only be used for debugging. * pid is stored in audit_token by set_security_token(). */ #define audit_token_pid_from_task(task) ((task)->audit_token.val[5]) /* End task_policy */ extern kern_return_t task_purge_volatile_memory(task_t task); extern void task_set_gpu_denied(task_t task, boolean_t denied); extern boolean_t task_is_gpu_denied(task_t task); #endif /* XNU_KERNEL_PRIVATE */ #ifdef KERNEL_PRIVATE extern void *get_bsdtask_info(task_t); extern void *get_bsdthreadtask_info(thread_t); extern vm_map_t get_task_map(task_t); extern ledger_t get_task_ledger(task_t); extern boolean_t get_task_pidsuspended(task_t); extern boolean_t get_task_frozen(task_t); /* Convert from a task to a port */ extern ipc_port_t convert_task_to_port(task_t); extern ipc_port_t convert_task_name_to_port(task_name_t); extern ipc_port_t convert_task_suspension_token_to_port(task_suspension_token_t task); /* Convert from a port (in this case, an SO right to a task's resume port) to a task. */ extern task_suspension_token_t convert_port_to_task_suspension_token(ipc_port_t port); extern boolean_t task_suspension_notify(mach_msg_header_t *); #endif /* KERNEL_PRIVATE */ extern task_t kernel_task; extern void task_deallocate( task_t task); extern void task_name_deallocate( task_name_t task_name); extern void task_suspension_token_deallocate( task_suspension_token_t token); __END_DECLS #endif /* _KERN_TASK_H_ */