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[apple/xnu.git] / osfmk / mach / task.defs

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/*
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/* 
 * Mach Operating System
 * Copyright (c) 1991,1990,1989 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:	mach/mach_port.defs
 *	Author:	Rich Draves
 *
 *	Exported kernel calls.
 */

subsystem
#if	KERNEL_SERVER
	  KernelServer
#endif	/* KERNEL_SERVER */
	  task 3400;

#include <mach/std_types.defs>
#include <mach/mach_types.defs>
/*
 *	Create a new task with an empty set of IPC rights,
 *	and having an address space constructed from the
 *	target task (or empty, if inherit_memory is FALSE).
 */
routine task_create(
		target_task	: task_t;
		ledgers		: ledger_array_t;
		inherit_memory	: boolean_t;
	out	child_task	: task_t);

/*
 *	Destroy the target task, causing all of its threads
 *	to be destroyed, all of its IPC rights to be deallocated,
 *	and all of its address space to be deallocated.
 */
routine task_terminate(
		target_task	: task_t);

/*
 *	Returns the set of threads belonging to the target task.
 */
routine task_threads(
		target_task	: task_t;
	out	act_list	: thread_act_array_t);

/*
 *	Stash a handful of ports for the target task; child
 *	tasks inherit this stash at task_create time.
 */
routine	mach_ports_register(
		target_task	: task_t;
		init_port_set	: mach_port_array_t =
					^array[] of mach_port_t);

/*
 *	Retrieve the stashed ports for the target task.
 */
routine	mach_ports_lookup(
		target_task	: task_t;
	out	init_port_set	: mach_port_array_t =
					^array[] of mach_port_t);

/*
 *      Returns information about the target task.
 */
routine task_info(
                target_task     : task_t;
                flavor          : task_flavor_t;
        out     task_info_out   : task_info_t, CountInOut);

/*
 * Set task information.
 */
routine	task_set_info(
		target_task	: task_t;
		flavor		: task_flavor_t;
		task_info_in	: task_info_t);

/*
 *	Increment the suspend count for the target task.
 *	No threads within a task may run when the suspend
 *	count for that task is non-zero.
 */
routine	task_suspend(
		target_task	: task_t);


/*
 *	Decrement the suspend count for the target task,
 *	if the count is currently non-zero.  If the resulting
 *	suspend	count is zero, then threads within the task
 *	that also have non-zero suspend counts may execute.
 */
routine	task_resume(
		target_task	: task_t);

/*
 *	Returns the current value of the selected special port
 *	associated with the target task.
 */
routine task_get_special_port(
		task		: task_t;
		which_port	: int;
	out	special_port	: mach_port_t);

/*
 *	Set one of the special ports associated with the
 *	target task.
 */
routine task_set_special_port(
		task		: task_t;
		which_port	: int;
		special_port	: mach_port_t);

/*
 *	Create a new thread within the target task, returning
 *	the port representing the first thr_act in that new thread.  The
 *	initial execution state of the thread is undefined.
 */
routine thread_create(
		parent_task	: task_t;
	out	child_act	: thread_act_t);

/*
 *      Create a new thread within the target task, returning
 *      the port representing that new thread.  The new thread 
 *	is not suspended; its initial execution state is given
 *	by flavor and new_state. Returns the port representing 
 *	the new thread.
 */
routine thread_create_running(
                parent_task     : task_t;
                flavor          : thread_state_flavor_t;
                new_state       : thread_state_t;
        out     child_act       : thread_act_t);

/*
 * Set an exception handler for a task on one or more exception types.
 * These handlers are invoked for all threads in the task if there are
 * no thread-specific exception handlers or those handlers returned an
 * error.
 */
routine	task_set_exception_ports(
		task		: task_t;
		exception_mask	: exception_mask_t;
		new_port	: mach_port_t;
		behavior	: exception_behavior_t;
		new_flavor	: thread_state_flavor_t);


/*
 * Lookup some of the old exception handlers for a task
 */
routine	task_get_exception_ports(
		task		: task_t;
		exception_mask	: exception_mask_t;
	  out	masks		: exception_mask_array_t;
	  out	old_handlers	: exception_handler_array_t, SameCount;
	  out	old_behaviors	: exception_behavior_array_t, SameCount;
	  out	old_flavors	: exception_flavor_array_t, SameCount);


/*
 * Set an exception handler for a thread on one or more exception types.
 * At the same time, return the previously defined exception handlers for
 * those types.
 */
routine	task_swap_exception_ports(
		task		: task_t;
		exception_mask	: exception_mask_t;
		new_port	: mach_port_t;
		behavior	: exception_behavior_t;
		new_flavor	: thread_state_flavor_t;
	  out	masks		: exception_mask_array_t;
	  out	old_handlerss	: exception_handler_array_t, SameCount;
	  out	old_behaviors	: exception_behavior_array_t, SameCount;
	  out	old_flavors	: exception_flavor_array_t, SameCount);

/*
 * Create and destroy lock_set and semaphore synchronizers on a
 * per-task basis (i.e. the task owns them).
 */
routine lock_set_create(
		task		: task_t;
	out	new_lock_set	: lock_set_t;
		n_ulocks	: int;
		policy		: int);

routine lock_set_destroy(
		task		: task_t;
		lock_set	: lock_set_t);

routine semaphore_create(
		task		: task_t;
	out	semaphore	: semaphore_t;
		policy		: int;
		value		: int);

routine semaphore_destroy(
		task		: task_t;
		semaphore	: semaphore_consume_ref_t);

/*
 * Set/get policy information for a task.
 * (Approved Mac OS X microkernel interface)
 */

routine task_policy_set(
	task			: task_t;
	flavor			: task_policy_flavor_t;
	policy_info		: task_policy_t);

routine task_policy_get(
	task			: task_t;
	flavor			: task_policy_flavor_t;
out	policy_info		: task_policy_t, CountInOut;
inout	get_default		: boolean_t);

/*
 * Task profiling.
 */
routine task_sample(
		task		: task_t;
		reply		: mach_port_make_send_t);

/*
 * JMM - Everything from here down is likely to go away soon
 */
/*
 * OBSOLETE interface.
 */
routine task_policy(
	task			: task_t;
	policy			: policy_t;
	base			: policy_base_t;
	set_limit		: boolean_t;
	change			: boolean_t);


/*
 *	Establish a user-level handler for the specified
 *	system call.
 */
routine task_set_emulation(
		target_port	: task_t;
		routine_entry_pt: vm_address_t;
		routine_number  : int);	

/*
 *	Get user-level handler entry points for all
 *	emulated system calls.
 */
routine task_get_emulation_vector(
		task		: task_t;
	out	vector_start	: int;
	out	emulation_vector: emulation_vector_t);

/*
 *	Establish user-level handlers for the specified
 *	system calls. Non-emulated system calls are specified
 *	with emulation_vector[i] == EML_ROUTINE_NULL.
 */
routine task_set_emulation_vector(
		task		: task_t;
		vector_start	: int;
		emulation_vector: emulation_vector_t);


/*
 *      Establish restart pc for interrupted atomic sequences.
 */
routine task_set_ras_pc(
		target_task     : task_t;
		basepc          : vm_address_t;
		boundspc        : vm_address_t);


/* 
 * JMM - Want to eliminate kernel tasks and processor_set so
 * keep them at the end.
 */
/*
 *	Create a new task in the kernel's address space with
 *	an empty set of IPC rights, with a map allocated from
 * 	the kernel's map starting at map_base of length map_size.
 */
routine kernel_task_create(
		target_task	: task_t;
		map_base	: vm_offset_t;
		map_size	: vm_size_t;
	out	child_task	: task_t);

/*
 *	Assign task to processor set.
 */
routine task_assign(
		task		: task_t;
		new_set		: processor_set_t;
		assign_threads	: boolean_t);

/*
 *	Assign task to default set.
 */
routine task_assign_default(
		task		: task_t;
		assign_threads	: boolean_t);

/*
 *	Get current assignment for task.
 */
routine task_get_assignment(
		task		: task_t;
	out	assigned_set	: processor_set_name_t);

/*
 * OBSOLETE interface.
 */
routine task_set_policy(
	task			: task_t;
	pset			: processor_set_t;
	policy			: policy_t;
	base			: policy_base_t;
	limit			: policy_limit_t;
	change			: boolean_t);