xnu-2422.1.72.tar.gz

[apple/xnu.git] / osfmk / kern / task.h

diff --git a/osfmk/kern/task.h b/osfmk/kern/task.h
index 3e4c87b3cdfae4b6eccbfca4cb1ee83fd21a8460..1b29918618c7f9c22580779b60a0da2eaac6ad98 100644 (file)
--- a/osfmk/kern/task.h
+++ b/osfmk/kern/task.h
@@ -1,23 +1,29 @@
 /*
 /*

- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2010 Apple Inc. All rights reserved.

  *
  *

- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@

  * 
  * 

- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License").  You may not use this file except in compliance with the
- * License.  Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
+ * 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.

  * 
  * 

- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * 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,
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * 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_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@

  */
 /*
  * @OSF_FREE_COPYRIGHT@
  */
 /*
  * @OSF_FREE_COPYRIGHT@


@@ -74,15 +80,20 @@
  * improvements that they make and grant CSL redistribution rights.
  *
  */
  * 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>
 
 #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
 
 
 #ifdef MACH_KERNEL_PRIVATE
 


@@ -93,83 +104,103 @@
 #include <mach/mach_param.h>
 #include <mach/task_info.h>
 #include <mach/exception_types.h>
 #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 <machine/task.h>

+
+#include <kern/cpu_data.h>

 #include <kern/queue.h>
 #include <kern/exception.h>
 #include <kern/lock.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 */
        /* 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       active;         /* Task has not been terminated */

+       boolean_t       halting;        /* Task is being halted */

 
        /* Miscellaneous */
        vm_map_t        map;            /* Address space description */
 
        /* 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 */
        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 */

 
        /* Threads in this task */
 
        /* Threads in this task */

-       queue_head_t    threads;
-       int                             thread_count;
-       int                             res_thread_count;
-       int                             active_thread_count;
+       queue_head_t            threads;

 
 

-       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 */
+       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 */
 
        /* 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 */
 
 
        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 */
        /* 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 */
 
        /* 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_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_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 */
 
        struct ipc_port *itk_registered[TASK_PORT_REGISTER_MAX];
                                        /* all send rights */
 


@@ -177,26 +208,15 @@ typedef struct task {
 
        /* Synchronizer ownership information */
        queue_head_t    semaphore_list;         /* list of owned semaphores   */
 
        /* 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             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;
-       unsigned long   priv_flags;     /* privelege resource flags */
-        
-#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
        MACHINE_TASK

+        

        integer_t faults;              /* faults counter */
         integer_t pageins;             /* pageins counter */
         integer_t cow_faults;          /* copy on write fault counter */
        integer_t faults;              /* faults counter */
         integer_t pageins;             /* pageins counter */
         integer_t cow_faults;          /* copy on write fault counter */


@@ -204,97 +224,496 @@ typedef struct task {
         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 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  
 #ifdef  MACH_BSD 
        void *bsd_info;
 #endif  

-       vm_offset_t     system_shared_region;
-       vm_offset_t     dynamic_working_set;
-       uint32_t taskFeatures[2];               /* Special feature for this task */
-#define tf64BitAddr    0x80000000              /* Task has 64-bit addressing */
-#define tf64BitData    0x40000000              /* Task has 64-bit data registers */
-} Task;
-
-#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)
+       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        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)
+#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 task_reference_locked(task) ((task)->ref_count++)
+       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

 
 

-/*
- *   priv_flags definitions
- */
-#define VM_BACKING_STORE_PRIV  0x1
+       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 void task_backing_store_privileged(
-                               task_t task);
+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);
 
 
 /* Initialize task module */
 extern void            task_init(void);
 

-/* task create */
-extern kern_return_t   task_create_internal(
-                               task_t          parent_task,
-                               boolean_t       inherit_memory,
-                               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 */
 
 
 #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(
 extern kern_return_t   task_hold(

-                               task_t  task);
+                                                       task_t          task);

 
 

-/* Release temporary hold on all threads in a 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(
 extern kern_return_t   task_release(

-                               task_t  task);
+                                                       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);

 
 

-/* Get a task prepared for major changes */
-extern kern_return_t   task_halt(
-                               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);
 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) */
 
 /* 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 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 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_ */
 
 #endif /* _KERN_TASK_H_ */