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

/*
 * Copyright (c) 2000-2008 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 <kern/kern_types.h>
#include <mach/mach_types.h>
#include <sys/cdefs.h>

#ifdef	MACH_KERNEL_PRIVATE

#include <mach/boolean.h>
#include <mach/port.h>
#include <mach/time_value.h>
#include <mach/message.h>
#include <mach/mach_param.h>
#include <mach/task_info.h>
#include <mach/exception_types.h>
#include <machine/task.h>

#include <kern/cpu_data.h>
#include <kern/queue.h>
#include <kern/exception.h>
#include <kern/lock.h>
#include <kern/thread.h>
#include <security/_label.h>
#include <ipc/ipc_labelh.h>

struct task {
	/* Synchronization/destruction information */
	decl_mutex_data(,lock)		/* Task's lock */
	uint32_t	ref_count;	/* Number of references to me */
	boolean_t	active;		/* Task has not been terminated */

	/* Miscellaneous */
	vm_map_t	map;		/* Address space description */
	queue_chain_t	tasks;	/* global list of tasks */
	void		*user_data;	/* Arbitrary data settable via IPC */
	int		suspend_count;	/* Internal scheduling only */

	/* Threads in this task */
	queue_head_t		threads;
	int			thread_count;
	uint32_t		active_thread_count;
	processor_set_t			pset_hint;
	struct affinity_space	*affinity_space;

	/* User-visible scheduling information */
	integer_t		user_stop_count;	/* outstanding stops */

	task_role_t		role;

	integer_t		priority;			/* base priority for threads */
	integer_t		max_priority;		/* maximum priority for threads */

	/* 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_mutex_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_automountd;/* a send right */
	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   */
	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  */

	/* Ledgers */
	struct ipc_port	*wired_ledger_port;
	struct ipc_port *paged_ledger_port;
	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 */
#ifdef  MACH_BSD 
	void *bsd_info;
#endif  
	struct vm_shared_region		*shared_region;
	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 */
#define task_has_64BitAddr(task)	\
	 (((task)->taskFeatures[0] & tf64BitAddr) != 0)
#define task_set_64BitAddr(task)	\
	 ((task)->taskFeatures[0] |= tf64BitAddr)
#define task_clear_64BitAddr(task)	\
	 ((task)->taskFeatures[0] &= ~tf64BitAddr)

#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_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)	mutex_init(&(task)->itk_lock_data, 0)
#define	itk_lock(task)		mutex_lock(&(task)->itk_lock_data)
#define	itk_unlock(task)	mutex_unlock(&(task)->itk_lock_data)

#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)

#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) __attribute__((section("__TEXT, initcode")));

#define	current_task_fast()	(current_thread()->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 */

__BEGIN_DECLS

#ifdef	XNU_KERNEL_PRIVATE

/* Hold all threads in a task */
extern kern_return_t	task_hold(
							task_t		task);

/* Release hold on all threads in a task */
extern kern_return_t	task_release(
							task_t		task);

/* Halt all other threads in the current task */
extern kern_return_t	task_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 */

extern kern_return_t	task_importance(
							task_t			task,
							integer_t		importance);

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 int		get_task_numactivethreads(
					task_t		task);
/* Get number of activations in a task */
extern int		get_task_numacts(
					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, vm_map_t);
extern pmap_t	get_task_pmap(task_t);

extern boolean_t	is_kerneltask(task_t task);

extern kern_return_t check_actforsig(task_t task, thread_t thread, int setast);

#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);

#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);
__END_DECLS

#endif	/* _KERN_TASK_H_ */
Commit	Line	Data
1c79356b	1	/*
cf7d32b8	2	* Copyright (c) 2000-2008 Apple Inc. All rights reserved.
1c79356b	3	*
2d21ac55	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
1c79356b	5	*
2d21ac55 A	6	* This file contains Original Code and/or Modifications of Original Code
	7	* as defined in and that are subject to the Apple Public Source License
	8	* Version 2.0 (the 'License'). You may not use this file except in
	9	* compliance with the License. The rights granted to you under the License
	10	* may not be used to create, or enable the creation or redistribution of,
	11	* unlawful or unlicensed copies of an Apple operating system, or to
	12	* circumvent, violate, or enable the circumvention or violation of, any
	13	* terms of an Apple operating system software license agreement.
8f6c56a5	14	*
2d21ac55 A	15	* Please obtain a copy of the License at
	16	* http://www.opensource.apple.com/apsl/ and read it before using this file.
	17	*
	18	* The Original Code and all software distributed under the License are
	19	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
8f6c56a5 A	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
8f6c56a5 A	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
2d21ac55 A	22	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	23	* Please see the License for the specific language governing rights and
	24	* limitations under the License.
8f6c56a5	25	*
2d21ac55	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
1c79356b A	27	*/
	28	/*
	29	* @OSF_FREE_COPYRIGHT@
	30	*/
	31	/*
	32	* Mach Operating System
	33	* Copyright (c) 1991,1990,1989,1988 Carnegie Mellon University
	34	* All Rights Reserved.
	35	*
	36	* Permission to use, copy, modify and distribute this software and its
	37	* documentation is hereby granted, provided that both the copyright
	38	* notice and this permission notice appear in all copies of the
	39	* software, derivative works or modified versions, and any portions
	40	* thereof, and that both notices appear in supporting documentation.
	41	*
	42	* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
	43	* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
	44	* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
	45	*
	46	* Carnegie Mellon requests users of this software to return to
	47	*
	48	* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
	49	* School of Computer Science
	50	* Carnegie Mellon University
	51	* Pittsburgh PA 15213-3890
	52	*
	53	* any improvements or extensions that they make and grant Carnegie Mellon
	54	* the rights to redistribute these changes.
	55	*/
	56	/*
	57	*/
	58	/*
	59	* File: task.h
	60	* Author: Avadis Tevanian, Jr.
	61	*
	62	* This file contains the structure definitions for tasks.
	63	*
	64	*/
	65	/*
	66	* Copyright (c) 1993 The University of Utah and
	67	* the Computer Systems Laboratory (CSL). All rights reserved.
	68	*
	69	* Permission to use, copy, modify and distribute this software and its
	70	* documentation is hereby granted, provided that both the copyright
	71	* notice and this permission notice appear in all copies of the
	72	* software, derivative works or modified versions, and any portions
	73	* thereof, and that both notices appear in supporting documentation.
	74	*
	75	* THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
	76	* IS" CONDITION. THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
	77	* ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
	78	*
	79	* CSL requests users of this software to return to csl-dist@cs.utah.edu any
	80	* improvements that they make and grant CSL redistribution rights.
	81	*
	82	*/
2d21ac55 A	83	/*
	84	* NOTICE: This file was modified by McAfee Research in 2004 to introduce
	85	* support for mandatory and extensible security protections. This notice
	86	* is included in support of clause 2.2 (b) of the Apple Public License,
	87	* Version 2.0.
	88	* Copyright (c) 2005 SPARTA, Inc.
	89	*/
1c79356b A	90
	91	#ifndef _KERN_TASK_H_
	92	#define _KERN_TASK_H_
	93
	94	#include <kern/kern_types.h>
	95	#include <mach/mach_types.h>
91447636	96	#include <sys/cdefs.h>
9bccf70c A	97
	98	#ifdef MACH_KERNEL_PRIVATE
	99
1c79356b A	100	#include <mach/boolean.h>
	101	#include <mach/port.h>
	102	#include <mach/time_value.h>
	103	#include <mach/message.h>
	104	#include <mach/mach_param.h>
	105	#include <mach/task_info.h>
	106	#include <mach/exception_types.h>
0c530ab8	107	#include <machine/task.h>
91447636 A	108
91447636 A	109	#include <kern/cpu_data.h>
1c79356b A	110	#include <kern/queue.h>
	111	#include <kern/exception.h>
	112	#include <kern/lock.h>
91447636	113	#include <kern/thread.h>
2d21ac55 A	114	#include <security/_label.h>
2d21ac55 A	115	#include <ipc/ipc_labelh.h>
1c79356b	116
91447636	117	struct task {
1c79356b A	118	/* Synchronization/destruction information */
1c79356b A	119	decl_mutex_data(,lock) /* Task's lock */
2d21ac55	120	uint32_t ref_count; /* Number of references to me */
1c79356b	121	boolean_t active; /* Task has not been terminated */
1c79356b A	122
	123	/* Miscellaneous */
	124	vm_map_t map; /* Address space description */
2d21ac55	125	queue_chain_t tasks; /* global list of tasks */
1c79356b A	126	void user_data; / Arbitrary data settable via IPC */
	127	int suspend_count; /* Internal scheduling only */
	128
55e303ae	129	/* Threads in this task */
2d21ac55 A	130	queue_head_t threads;
	131	int thread_count;
	132	uint32_t active_thread_count;
cf7d32b8	133	processor_set_t pset_hint;
2d21ac55	134	struct affinity_space *affinity_space;
1c79356b A	135
	136	/* User-visible scheduling information */
	137	integer_t user_stop_count; /* outstanding stops */
	138
0b4e3aa0	139	task_role_t role;
1c79356b	140
0b4e3aa0 A	141	integer_t priority; /* base priority for threads */
0b4e3aa0 A	142	integer_t max_priority; /* maximum priority for threads */
1c79356b	143
55e303ae	144	/* Task security and audit tokens */
1c79356b	145	security_token_t sec_token;
55e303ae	146	audit_token_t audit_token;
1c79356b A	147
1c79356b A	148	/* Statistics */
91447636 A	149	uint64_t total_user_time; /* terminated threads only */
91447636 A	150	uint64_t total_system_time;
1c79356b	151
2d21ac55 A	152	/* Virtual timers */
2d21ac55 A	153	uint32_t vtimers;
1c79356b A	154
	155	/* IPC structures */
	156	decl_mutex_data(,itk_lock_data)
	157	struct ipc_port itk_self; / not a right, doesn't hold ref */
0c530ab8	158	struct ipc_port itk_nself; / not a right, doesn't hold ref */
1c79356b A	159	struct ipc_port itk_sself; / a send right */
	160	struct exception_action exc_actions[EXC_TYPES_COUNT];
	161	/* a send right each valid element */
	162	struct ipc_port itk_host; / a send right */
	163	struct ipc_port itk_bootstrap; / a send right */
2d21ac55 A	164	struct ipc_port itk_seatbelt; / a send right */
	165	struct ipc_port itk_gssd; / yet another send right */
	166	struct ipc_port itk_task_access; / and another send right */
	167	struct ipc_port itk_automountd;/ a send right */
1c79356b A	168	struct ipc_port *itk_registered[TASK_PORT_REGISTER_MAX];
	169	/* all send rights */
	170
	171	struct ipc_space *itk_space;
	172
1c79356b A	173	/* Synchronizer ownership information */
	174	queue_head_t semaphore_list; /* list of owned semaphores */
	175	queue_head_t lock_set_list; /* list of owned lock sets */
	176	int semaphores_owned; /* number of semaphores owned */
	177	int lock_sets_owned; /* number of lock sets owned */
	178
91447636	179	/* Ledgers */
1c79356b A	180	struct ipc_port *wired_ledger_port;
1c79356b A	181	struct ipc_port *paged_ledger_port;
91447636 A	182	unsigned int priv_flags; /* privilege resource flags */
91447636 A	183	#define VM_BACKING_STORE_PRIV 0x1
0c530ab8 A	184
0c530ab8 A	185	MACHINE_TASK
1c79356b	186
1c79356b A	187	integer_t faults; /* faults counter */
	188	integer_t pageins; /* pageins counter */
	189	integer_t cow_faults; /* copy on write fault counter */
	190	integer_t messages_sent; /* messages sent counter */
	191	integer_t messages_received; /* messages received counter */
	192	integer_t syscalls_mach; /* mach system call counter */
	193	integer_t syscalls_unix; /* unix system call counter */
2d21ac55 A	194	uint32_t c_switch; /* total context switches */
	195	uint32_t p_switch; /* total processor switches */
	196	uint32_t ps_switch; /* total pset switches */
1c79356b A	197	#ifdef MACH_BSD
	198	void *bsd_info;
	199	#endif
2d21ac55	200	struct vm_shared_region *shared_region;
55e303ae A	201	uint32_t taskFeatures[2]; /* Special feature for this task */
	202	#define tf64BitAddr 0x80000000 /* Task has 64-bit addressing */
	203	#define tf64BitData 0x40000000 /* Task has 64-bit data registers */
91447636 A	204	#define task_has_64BitAddr(task) \
	205	(((task)->taskFeatures[0] & tf64BitAddr) != 0)
	206	#define task_set_64BitAddr(task) \
	207	((task)->taskFeatures[0] \|= tf64BitAddr)
	208	#define task_clear_64BitAddr(task) \
	209	((task)->taskFeatures[0] &= ~tf64BitAddr)
	210
2d21ac55 A	211	#if CONFIG_MACF_MACH
	212	ipc_labelh_t label;
	213	#endif
	214
91447636	215	};
1c79356b	216
1c79356b A	217	#define task_lock(task) mutex_lock(&(task)->lock)
	218	#define task_lock_try(task) mutex_try(&(task)->lock)
	219	#define task_unlock(task) mutex_unlock(&(task)->lock)
	220
2d21ac55 A	221	#if CONFIG_MACF_MACH
	222	#define maclabel label->lh_label
	223
	224	#define tasklabel_lock(task) lh_lock((task)->label)
	225	#define tasklabel_unlock(task) lh_unlock((task)->label)
	226
	227	extern void tasklabel_lock2(task_t a, task_t b);
	228	extern void tasklabel_unlock2(task_t a, task_t b);
	229	#endif /* MAC_MACH */
	230
91447636	231	#define itk_lock_init(task) mutex_init(&(task)->itk_lock_data, 0)
1c79356b A	232	#define itk_lock(task) mutex_lock(&(task)->itk_lock_data)
	233	#define itk_unlock(task) mutex_unlock(&(task)->itk_lock_data)
	234
91447636	235	#define task_reference_internal(task) \
2d21ac55	236	(void)hw_atomic_add(&(task)->ref_count, 1)
9bccf70c	237
91447636 A	238	#define task_deallocate_internal(task) \
91447636 A	239	hw_atomic_sub(&(task)->ref_count, 1)
55e303ae	240
91447636 A	241	#define task_reference(task) \
	242	MACRO_BEGIN \
	243	if ((task) != TASK_NULL) \
	244	task_reference_internal(task); \
	245	MACRO_END
1c79356b	246
91447636 A	247	extern kern_return_t kernel_task_create(
	248	task_t task,
	249	vm_offset_t map_base,
	250	vm_size_t map_size,
	251	task_t *child);
55e303ae	252
1c79356b	253	/* Initialize task module */
2d21ac55	254	extern void task_init(void) __attribute__((section("__TEXT, initcode")));
1c79356b	255
91447636 A	256	#define current_task_fast() (current_thread()->task)
91447636 A	257	#define current_task() current_task_fast()
1c79356b	258
91447636	259	#else /* MACH_KERNEL_PRIVATE */
1c79356b	260
91447636 A	261	__BEGIN_DECLS
	262
	263	extern task_t current_task(void);
	264
	265	extern void task_reference(task_t task);
	266
	267	__END_DECLS
1c79356b	268
9bccf70c	269	#endif /* MACH_KERNEL_PRIVATE */
1c79356b	270
91447636	271	__BEGIN_DECLS
1c79356b	272
91447636 A	273	#ifdef XNU_KERNEL_PRIVATE
	274
	275	/* Hold all threads in a task */
1c79356b	276	extern kern_return_t task_hold(
91447636	277	task_t task);
1c79356b	278
91447636	279	/* Release hold on all threads in a task */
1c79356b	280	extern kern_return_t task_release(
91447636	281	task_t task);
1c79356b	282
91447636	283	/* Halt all other threads in the current task */
1c79356b	284	extern kern_return_t task_halt(
91447636 A	285	task_t task);
	286
	287	extern kern_return_t task_terminate_internal(
	288	task_t task);
	289
	290	extern kern_return_t task_create_internal(
	291	task_t parent_task,
	292	boolean_t inherit_memory,
0c530ab8	293	boolean_t is_64bit,
91447636	294	task_t child_task); / OUT */
1c79356b	295
0b4e3aa0 A	296	extern kern_return_t task_importance(
	297	task_t task,
	298	integer_t importance);
91447636	299
2d21ac55 A	300	extern void task_vtimer_set(
	301	task_t task,
	302	integer_t which);
	303
	304	extern void task_vtimer_clear(
	305	task_t task,
	306	integer_t which);
	307
	308	extern void task_vtimer_update(
	309	task_t task,
	310	integer_t which,
	311	uint32_t *microsecs);
	312
	313	#define TASK_VTIMER_USER 0x01
	314	#define TASK_VTIMER_PROF 0x02
	315	#define TASK_VTIMER_RLIM 0x04
	316
91447636 A	317	extern void task_set_64bit(
	318	task_t task,
	319	boolean_t is64bit);
	320
	321	extern void task_backing_store_privileged(
	322	task_t task);
	323
593a1d5f A	324	extern int get_task_numactivethreads(
593a1d5f A	325	task_t task);
91447636 A	326	/* Get number of activations in a task */
	327	extern int get_task_numacts(
	328	task_t task);
	329
0b4e3aa0	330
1c79356b	331	/* JMM - should just be temporary (implementation in bsd_kern still) */
1c79356b	332	extern void set_bsdtask_info(task_t,void *);
91447636	333	extern vm_map_t get_task_map_reference(task_t);
1c79356b A	334	extern vm_map_t swap_task_map(task_t, vm_map_t);
1c79356b A	335	extern pmap_t get_task_pmap(task_t);
9bccf70c	336
91447636	337	extern boolean_t is_kerneltask(task_t task);
9bccf70c	338
2d21ac55 A	339	extern kern_return_t check_actforsig(task_t task, thread_t thread, int setast);
2d21ac55 A	340
91447636	341	#endif /* XNU_KERNEL_PRIVATE */
9bccf70c	342
91447636	343	#ifdef KERNEL_PRIVATE
9bccf70c	344
91447636	345	extern void *get_bsdtask_info(task_t);
2d21ac55	346	extern void *get_bsdthreadtask_info(thread_t);
91447636	347	extern vm_map_t get_task_map(task_t);
9bccf70c	348
91447636	349	#endif /* KERNEL_PRIVATE */
9bccf70c	350
91447636 A	351	extern task_t kernel_task;
	352
	353	extern void task_deallocate(
	354	task_t task);
9bccf70c	355
0c530ab8 A	356	extern void task_name_deallocate(
0c530ab8 A	357	task_name_t task_name);
91447636	358	__END_DECLS
9bccf70c	359
1c79356b	360	#endif /* _KERN_TASK_H_ */