/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2010 Apple Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
- *
- * Copyright (c) 1999-2003 Apple Computer, 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. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
+ * 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
* Please see the License for the specific language governing rights and
* limitations under the License.
*
- * @APPLE_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
* @OSF_FREE_COPYRIGHT@
* 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 <kern/kern_types.h>
#include <mach/mach_types.h>
-#include <vm/pmap.h>
-
-#ifdef __APPLE_API_PRIVATE
+#include <sys/cdefs.h>
#ifdef MACH_KERNEL_PRIVATE
#include <mach/mach_param.h>
#include <mach/task_info.h>
#include <mach/exception_types.h>
-#include <mach_prof.h>
+#include <mach/vm_statistics.h>
#include <machine/task.h>
+
+#include <kern/cpu_data.h>
#include <kern/queue.h>
#include <kern/exception.h>
#include <kern/lock.h>
-#include <kern/syscall_emulation.h>
-#include <norma_task.h>
-#include <mach_host.h>
-#include <fast_tas.h>
-#include <task_swapper.h>
-#include <kern/thread_act.h>
-
-typedef struct task {
+#include <security/_label.h>
+#include <ipc/ipc_labelh.h>
+#endif /* MACH_KERNEL_PRIVATE */
+
+#ifdef XNU_KERNEL_PRIVATE
+
+/* 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 <kern/thread.h>
+
+struct task {
/* Synchronization/destruction information */
- decl_mutex_data(,lock) /* Task's lock */
- int ref_count; /* Number of references to me */
+ 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 kernel_loaded; /* Created with kernel_task_create() */
+ boolean_t halting; /* Task is being halted */
/* Miscellaneous */
vm_map_t map; /* Address space description */
- queue_chain_t pset_tasks; /* list of tasks assigned to pset */
+ queue_chain_t tasks; /* global list of tasks */
void *user_data; /* Arbitrary data settable via IPC */
- int suspend_count; /* Internal scheduling only */
-
-#if TASK_SWAPPER
- /* Task swapper data */
- unsigned short swap_state; /* swap state (e.g. IN/OUT) */
- unsigned short swap_flags; /* swap flags (e.g. MAKE_UNSWAPP) */
- unsigned int swap_stamp; /* when last swapped */
- unsigned long swap_rss; /* size (pages) when last swapped */
- int swap_ast_waiting; /* number of threads that have not */
- /* reached a clean point and halted */
- int swap_nswap; /* number of times this task swapped */
- queue_chain_t swapped_tasks; /* list of non-resident tasks */
-#endif /* TASK_SWAPPER */
-
- /* Activations in this task */
- queue_head_t thr_acts; /* list of thread_activations */
- int thr_act_count;
- int res_act_count;
- int active_act_count; /* have not terminate_self yet */
-
- processor_set_t processor_set; /* processor set for new threads */
-#if MACH_HOST
- boolean_t may_assign; /* can assigned pset be changed? */
- boolean_t assign_active; /* waiting for may_assign */
-#endif /* MACH_HOST */
+
+ /* 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 */
-
- task_role_t role;
+ integer_t legacy_stop_count; /* outstanding legacy stops */
integer_t priority; /* base priority for threads */
integer_t max_priority; /* maximum priority for threads */
- /* Task security token */
+ integer_t importance; /* priority offset (BSD 'nice' value) */
+
+ /* Task security and audit tokens */
security_token_t sec_token;
+ audit_token_t audit_token;
/* Statistics */
- time_value_t total_user_time; /* user time for dead threads */
- time_value_t total_system_time; /* system time for dead threads */
+ uint64_t total_user_time; /* terminated threads only */
+ uint64_t total_system_time;
-#if MACH_PROF
- boolean_t task_profiled; /* is task being profiled ? */
- struct prof_data *profil_buffer;/* profile struct if so */
-#endif /* MACH_PROF */
+ /* Virtual timers */
+ uint32_t vtimers;
/* IPC structures */
- decl_mutex_data(,itk_lock_data)
+ 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_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 */
/* Synchronizer ownership information */
queue_head_t semaphore_list; /* list of owned semaphores */
- queue_head_t lock_set_list; /* list of owned lock sets */
int semaphores_owned; /* number of semaphores owned */
- int lock_sets_owned; /* number of lock sets owned */
- /* User space system call emulation support */
- struct eml_dispatch *eml_dispatch;
+ ledger_t ledger;
+
+ unsigned int priv_flags; /* privilege resource flags */
+#define VM_BACKING_STORE_PRIV 0x1
- /* Ledgers */
- struct ipc_port *wired_ledger_port;
- struct ipc_port *paged_ledger_port;
-
-#if NORMA_TASK
- long child_node; /* if != -1, node for new children */
-#endif /* NORMA_TASK */
-#if FAST_TAS
- vm_offset_t fast_tas_base;
- vm_offset_t fast_tas_end;
-#endif /* FAST_TAS */
MACHINE_TASK
+
integer_t faults; /* faults counter */
integer_t pageins; /* pageins counter */
integer_t cow_faults; /* copy on write fault counter */
integer_t messages_received; /* messages received counter */
integer_t syscalls_mach; /* mach system call counter */
integer_t syscalls_unix; /* unix system call counter */
- integer_t csw; /* context switch 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
- vm_offset_t system_shared_region;
- vm_offset_t dynamic_working_set;
-} Task;
+ struct vm_shared_region *shared_region;
+ uint32_t t_flags; /* general-purpose task flags protected by task_lock (TL) */
+#define TF_64B_ADDR 0x1 /* task has 64-bit addressing */
+#define TF_64B_DATA 0x2 /* task has 64-bit data registers */
+#define TF_CPUMON_WARNING 0x4 /* task has at least one thread in CPU usage warning zone */
+#define TF_WAKEMON_WARNING 0x8 /* task is in wakeups monitor warning zone */
+#define TF_TELEMETRY (TF_CPUMON_WARNING | TF_WAKEMON_WARNING) /* task is a telemetry participant */
+#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_MACF_MACH
+ ipc_labelh_t label;
+#endif
-#define task_lock(task) mutex_lock(&(task)->lock)
-#define task_lock_try(task) mutex_try(&(task)->lock)
-#define task_unlock(task) mutex_unlock(&(task)->lock)
+#if CONFIG_COUNTERS
+#define TASK_PMC_FLAG 0x1 /* Bit in "t_chud" signifying PMC interest */
+ uint32_t t_chud; /* CHUD flags, used for Shark */
+#endif
-#define itk_lock_init(task) mutex_init(&(task)->itk_lock_data, \
- ETAP_THREAD_TASK_ITK)
-#define itk_lock(task) mutex_lock(&(task)->itk_lock_data)
-#define itk_unlock(task) mutex_unlock(&(task)->itk_lock_data)
+ 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 IMPORTANCE_INHERITANCE
+ uint32_t imp_receiver :1, /* the task can receive importance boost */
+ imp_donor :1, /* the task always sends boosts regardless of boost status */
+ imp_reserved :30; /* reserved for future use */
+
+ uint32_t task_imp_assertcnt; /* total number of boost assertions (kernel managed plus userspace managed) */
+ uint32_t task_imp_externcnt; /* number of boost assertions externalized (userspace managed) */
+#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
-#define task_reference_locked(task) ((task)->ref_count++)
+ 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 */
+
+ /* Statistics accumulated for terminated threads from this task */
+ uint32_t task_timer_wakeups_bin_1;
+ uint32_t task_timer_wakeups_bin_2;
+
+ int task_volatile_objects; /* # of purgeable VM objects made
+ * "volatile" by this task */
+};
+
+#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)
+
+#if CONFIG_MACF_MACH
+#define maclabel label->lh_label
+
+#define tasklabel_lock(task) lh_lock((task)->label)
+#define tasklabel_unlock(task) lh_unlock((task)->label)
+
+extern void tasklabel_lock2(task_t a, task_t b);
+extern void tasklabel_unlock2(task_t a, task_t b);
+#endif /* MAC_MACH */
+
+#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
-/*
- * Internal only routines
- */
+#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);
-/* task create */
-extern kern_return_t task_create_local(
- task_t parent_task,
- boolean_t inherit_memory,
- boolean_t kernel_loaded,
- task_t *child_task); /* OUT */
+#define current_task_fast() (current_thread()->task)
+#define current_task() current_task_fast()
-extern void consider_task_collect(void);
+extern lck_attr_t task_lck_attr;
+extern lck_grp_t task_lck_grp;
-#define current_task_fast() (current_act_fast()->task)
-#define current_task() current_task_fast()
+#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 */
-extern task_t kernel_task;
+__BEGIN_DECLS
+
+#ifdef XNU_KERNEL_PRIVATE
-/* Temporarily hold all threads in a task */
+/* Hold all threads in a task */
extern kern_return_t task_hold(
- task_t task);
+ task_t task);
-/* Release temporary hold on all threads in a task */
-extern kern_return_t task_release(
- 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);
-/* Get a task prepared for major changes */
-extern kern_return_t task_halt(
- task_t task);
+/* 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);
+
+#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,
+ boolean_t inherit_memory,
+ boolean_t is_64bit,
+ task_t *child_task); /* OUT */
-#if defined(MACH_KERNEL_PRIVATE) || defined(BSD_BUILD)
extern kern_return_t task_importance(
task_t task,
integer_t importance);
-#endif
+
+extern void task_power_info_locked(
+ task_t task,
+ task_power_info_t info);
+
+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 *get_bsdtask_info(task_t);
extern void set_bsdtask_info(task_t,void *);
-extern vm_map_t get_task_map(task_t);
-extern vm_map_t swap_task_map(task_t, vm_map_t);
+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_phys_footprint(task_t);
+extern uint64_t get_task_phys_footprint_max(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 iokit_mem;
+ int phys_footprint;
+ int phys_compressed;
+ int platform_idle_wakeups;
+ int interrupt_wakeups;
+};
+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 or external, task only */
+#define TASK_POLICY_DARWIN_BG_AND_GPU 0x25
+#define TASK_POLICY_GPU_DENY 0x26
+
+/* 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
+
+/* thread-only attributes */
+#define TASK_POLICY_PIDBIND_BG 0x32
+#define TASK_POLICY_WORKQ_BG 0x33
+
+#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 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_apptype(task_t task, int type);
+
+/* 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
+
+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 boolean_t task_reference_try(task_t task);
+/*
+ * Get effective policy
+ * Only for use by relevant subsystem, should never be passed into a setter!
+ */
-#endif /* __APPLE_API_PRIVATE */
+extern int proc_get_effective_task_policy(task_t task, int flavor);
+extern int proc_get_effective_thread_policy(thread_t thread, int flavor);
-#if !defined(MACH_KERNEL_PRIVATE)
+/* temporary compatibility */
+int proc_setthread_saved_importance(thread_t thread, int importance);
-extern task_t current_task(void);
+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);
-#endif /* MACH_KERNEL_TASK */
+#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 */
-/* Take reference on task (make sure it doesn't go away) */
-extern void task_reference(task_t task);
+/* 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);
+
+
+void task_importance_mark_donor(task_t task, boolean_t donating);
+
+#if IMPORTANCE_INHERITANCE
+extern boolean_t task_is_importance_donor(task_t task);
+extern boolean_t task_is_importance_receiver(task_t task);
+
+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_external_assertion(task_t target_task, uint32_t count);
+extern int task_importance_drop_external_assertion(task_t target_task, uint32_t count);
+
+extern int task_importance_externalize_assertion(task_t target_task, uint32_t count, int sender_pid);
+#endif /* IMPORTANCE_INHERITANCE */
+
+extern void task_hold_multiple_assertion(task_t task, uint32_t count);
+extern void task_add_importance_watchport(task_t task, int pid, mach_port_t port, int *boostp);
+
+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 */
+
+#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);
-/* Remove reference to task */
-extern void task_deallocate(task_t task);
+extern void task_suspension_token_deallocate(
+ task_suspension_token_t token);
+__END_DECLS
#endif /* _KERN_TASK_H_ */
projects / apple / xnu.git / blobdiff