[apple/xnu.git] / osfmk / mach / task_policy.h

/*
 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_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 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 OR NON-INFRINGEMENT.  Please see the
 * License for the specific language governing rights and limitations
 * under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
/*
 * Copyright (c) 2000 Apple Computer, Inc.  All rights reserved.
 *
 * HISTORY
 *
 * 10 October 2000 (debo)
 *  Created.
 *
 * 30 November 2000 (debo)
 *	Final resolution of review feedback.
 */

#ifndef _MACH_TASK_POLICY_H_
#define _MACH_TASK_POLICY_H_

#include <mach/mach_types.h>

/*
 * These are the calls for accessing the policy parameters
 * of a particular task.
 *
 * The extra 'get_default' parameter to the second call is
 * IN/OUT as follows:
 * 1) if asserted on the way in it indicates that the default
 * values should be returned, not the ones currently set, in
 * this case 'get_default' will always be asserted on return;
 * 2) if unasserted on the way in, the current settings are
 * desired and if still unasserted on return, then the info
 * returned reflects the current settings, otherwise if
 * 'get_default' returns asserted, it means that there are no
 * current settings due to other parameters taking precedence,
 * and the default ones are being returned instead.
 */

typedef natural_t	task_policy_flavor_t;
typedef integer_t	*task_policy_t;

/*
kern_return_t	task_policy_set(
					task_t					task,
					task_policy_flavor_t	flavor,
					task_policy_t			policy_info,
					mach_msg_type_number_t	count);

kern_return_t	task_policy_get(
					task_t					task,
					task_policy_flavor_t	flavor,
					task_policy_t			policy_info,
					mach_msg_type_number_t	*count,
					boolean_t				*get_default);
*/

/*
 * Defined flavors.
 */
/*
 * TASK_CATEGORY_POLICY:
 *
 * This provides information to the kernel about the role
 * of the task in the system.
 *
 * Parameters:
 *
 * role: Enumerated as follows:
 *
 * TASK_UNSPECIFIED is the default, since the role is not
 * inherited from the parent.
 *
 * TASK_FOREGROUND_APPLICATION should be assigned when the
 * task is a normal UI application in the foreground from
 * the HI point of view.
 * **N.B. There may be more than one of these at a given time.
 *
 * TASK_BACKGROUND_APPLICATION should be assigned when the
 * task is a normal UI application in the background from
 * the HI point of view.
 *
 * TASK_CONTROL_APPLICATION should be assigned to the unique
 * UI application which implements the pop-up application dialog.
 * There can only be one task at a time with this designation,
 * which is assigned FCFS.
 *
 * TASK_GRAPHICS_SERVER should be assigned to the graphics
 * management (window) server.  There can only be one task at
 * a time with this designation, which is assigned FCFS.
 */

#define TASK_CATEGORY_POLICY		1

struct task_category_policy {
	enum {
		TASK_UNSPECIFIED = 0,
		TASK_FOREGROUND_APPLICATION,
		TASK_BACKGROUND_APPLICATION,
 		TASK_CONTROL_APPLICATION,
		TASK_GRAPHICS_SERVER,
	}				role;
};

typedef struct task_category_policy		task_category_policy_data_t;
typedef struct task_category_policy		*task_category_policy_t;

#define TASK_CATEGORY_POLICY_COUNT	\
	(sizeof (task_category_policy_data_t) / sizeof (integer_t))

#endif	/* _MACH_TASK_POLICY_H_ */
Commit	Line	Data
1c79356b A	1	/*
	2	* Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
	3	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
	6	* The contents of this file constitute Original Code as defined in and
	7	* are subject to the Apple Public Source License Version 1.1 (the
	8	* "License"). You may not use this file except in compliance with the
	9	* License. Please obtain a copy of the License at
	10	* http://www.apple.com/publicsource and read it before using this file.
	11	*
	12	* This Original Code and all software distributed under the License are
	13	* distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	14	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	15	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	16	* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
	17	* License for the specific language governing rights and limitations
	18	* under the License.
	19	*
	20	* @APPLE_LICENSE_HEADER_END@
	21	*/
	22	/*
	23	* Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
	24	*
	25	* HISTORY
	26	*
	27	* 10 October 2000 (debo)
	28	* Created.
	29	*
	30	* 30 November 2000 (debo)
	31	* Final resolution of review feedback.
	32	*/
	33
	34	#ifndef _MACH_TASK_POLICY_H_
	35	#define _MACH_TASK_POLICY_H_
	36
	37	#include <mach/mach_types.h>
	38
	39	/*
	40	* These are the calls for accessing the policy parameters
	41	* of a particular task.
	42	*
	43	* The extra 'get_default' parameter to the second call is
	44	* IN/OUT as follows:
	45	* 1) if asserted on the way in it indicates that the default
	46	* values should be returned, not the ones currently set, in
	47	* this case 'get_default' will always be asserted on return;
	48	* 2) if unasserted on the way in, the current settings are
	49	* desired and if still unasserted on return, then the info
	50	* returned reflects the current settings, otherwise if
	51	* 'get_default' returns asserted, it means that there are no
	52	* current settings due to other parameters taking precedence,
	53	* and the default ones are being returned instead.
	54	*/
	55
	56	typedef natural_t task_policy_flavor_t;
	57	typedef integer_t *task_policy_t;
	58
	59	/*
	60	kern_return_t task_policy_set(
	61	task_t task,
	62	task_policy_flavor_t flavor,
	63	task_policy_t policy_info,
	64	mach_msg_type_number_t count);
65
66	kern_return_t task_policy_get(
67	task_t task,
68	task_policy_flavor_t flavor,
69	task_policy_t policy_info,
70	mach_msg_type_number_t *count,
71	boolean_t *get_default);
72	*/
73
74	/*
75	* Defined flavors.
76	*/
77	/*
78	* TASK_CATEGORY_POLICY:
79	*
80	* This provides information to the kernel about the role
81	* of the task in the system.
82	*
83	* Parameters:
84	*
85	* role: Enumerated as follows:
86	*
87	* TASK_UNSPECIFIED is the default, since the role is not
88	* inherited from the parent.
89	*
90	* TASK_FOREGROUND_APPLICATION should be assigned when the
91	* task is a normal UI application in the foreground from
92	* the HI point of view.
93	* **N.B. There may be more than one of these at a given time.
94	*
95	* TASK_BACKGROUND_APPLICATION should be assigned when the
96	* task is a normal UI application in the background from
97	* the HI point of view.
98	*
99	* TASK_CONTROL_APPLICATION should be assigned to the unique
100	* UI application which implements the pop-up application dialog.
101	* There can only be one task at a time with this designation,
102	* which is assigned FCFS.
103	*
104	* TASK_GRAPHICS_SERVER should be assigned to the graphics
105	* management (window) server. There can only be one task at
106	* a time with this designation, which is assigned FCFS.
107	*/
108
109	#define TASK_CATEGORY_POLICY 1
110
111	struct task_category_policy {
112	enum {
113	TASK_UNSPECIFIED = 0,
114	TASK_FOREGROUND_APPLICATION,
115	TASK_BACKGROUND_APPLICATION,
116	TASK_CONTROL_APPLICATION,
117	TASK_GRAPHICS_SERVER,
118	} role;
119	};
120
121	typedef struct task_category_policy task_category_policy_data_t;
122	typedef struct task_category_policy *task_category_policy_t;
123
124	#define TASK_CATEGORY_POLICY_COUNT \
125	(sizeof (task_category_policy_data_t) / sizeof (integer_t))
126
127	#endif /* _MACH_TASK_POLICY_H_ */