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

/*
 * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_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.
 * 
 * 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_LICENSE_HEADER_END@
 */
/*
 * @OSF_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:	memory_object.h
 *	Author:	Michael Wayne Young
 *
 *	External memory management interface definition.
 */

#ifndef	_MACH_MEMORY_OBJECT_H_
#define _MACH_MEMORY_OBJECT_H_

/*
 *	User-visible types used in the external memory
 *	management interface:
 */

#include <mach/port.h>
#include <mach/message.h>
#include <mach/machine/vm_types.h>

typedef	mach_port_t	memory_object_t;
					/* A memory object ... */
					/*  Used by the kernel to retrieve */
					/*  or store data */

typedef	mach_port_t	memory_object_control_t;
					/* Provided to a memory manager; ... */
					/*  used to control a memory object */

typedef	mach_port_t	memory_object_name_t;
					/* Used to describe the memory ... */
					/*  object in vm_regions() calls */

typedef mach_port_t     memory_object_rep_t;
					/* Per-client handle for mem object */
					/*  Used by user programs to specify */
					/*  the object to map */

typedef	int		memory_object_copy_strategy_t;
					/* How memory manager handles copy: */
#define		MEMORY_OBJECT_COPY_NONE		0
					/* ... No special support */
#define		MEMORY_OBJECT_COPY_CALL		1
					/* ... Make call on memory manager */
#define		MEMORY_OBJECT_COPY_DELAY 	2
					/* ... Memory manager doesn't
					 *     change data externally.
					 */
#define		MEMORY_OBJECT_COPY_TEMPORARY 	3
					/* ... Memory manager doesn't
					 *     change data externally, and
					 *     doesn't need to see changes.
					 */
#define		MEMORY_OBJECT_COPY_SYMMETRIC 	4
					/* ... Memory manager doesn't
					 *     change data externally,
					 *     doesn't need to see changes,
					 *     and object will not be
					 *     multiply mapped.
					 *
					 *     XXX
					 *     Not yet safe for non-kernel use.
					 */

#define		MEMORY_OBJECT_COPY_INVALID	5
					/* ...	An invalid copy strategy,
					 *	for external objects which
					 *	have not been initialized.
					 *	Allows copy_strategy to be
					 *	examined without also
					 *	examining pager_ready and
					 *	internal.
					 */

typedef	int		memory_object_return_t;
					/* Which pages to return to manager
					   this time (lock_request) */
#define		MEMORY_OBJECT_RETURN_NONE	0
					/* ... don't return any. */
#define		MEMORY_OBJECT_RETURN_DIRTY	1
					/* ... only dirty pages. */
#define		MEMORY_OBJECT_RETURN_ALL	2
					/* ... dirty and precious pages. */
#define		MEMORY_OBJECT_RETURN_ANYTHING	3
					/* ... any resident page. */

#define		MEMORY_OBJECT_NULL	MACH_PORT_NULL


/*
 *	Types for the memory object flavor interfaces
 */

#define MEMORY_OBJECT_INFO_MAX      (1024) 
typedef int     *memory_object_info_t;      
typedef int	 memory_object_flavor_t;
typedef int      memory_object_info_data_t[MEMORY_OBJECT_INFO_MAX];


#define OLD_MEMORY_OBJECT_BEHAVIOR_INFO 	10	
#define MEMORY_OBJECT_PERFORMANCE_INFO	11
#define OLD_MEMORY_OBJECT_ATTRIBUTE_INFO	12
#define MEMORY_OBJECT_ATTRIBUTE_INFO	14
#define MEMORY_OBJECT_BEHAVIOR_INFO 	15	


struct old_memory_object_behave_info {
	memory_object_copy_strategy_t	copy_strategy;	
	boolean_t			temporary;
	boolean_t			invalidate;
};

struct memory_object_perf_info {
	memory_object_cluster_size_t	cluster_size;
	boolean_t						may_cache;
};

struct old_memory_object_attr_info {			/* old attr list */
        boolean_t       		object_ready;
        boolean_t       		may_cache;
        memory_object_copy_strategy_t 	copy_strategy;
};

struct memory_object_attr_info {
	memory_object_copy_strategy_t	copy_strategy;
	memory_object_cluster_size_t	cluster_size;
	boolean_t			may_cache_object;
	boolean_t			temporary;
};

struct memory_object_behave_info {
	memory_object_copy_strategy_t	copy_strategy;	
	boolean_t			temporary;
	boolean_t			invalidate;
	boolean_t			silent_overwrite;
	boolean_t			advisory_pageout;
};

typedef struct old_memory_object_behave_info *old_memory_object_behave_info_t;
typedef struct old_memory_object_behave_info old_memory_object_behave_info_data_t;

typedef struct memory_object_behave_info *memory_object_behave_info_t;
typedef struct memory_object_behave_info memory_object_behave_info_data_t;

typedef struct memory_object_perf_info 	*memory_object_perf_info_t;
typedef struct memory_object_perf_info	memory_object_perf_info_data_t;

typedef struct old_memory_object_attr_info *old_memory_object_attr_info_t;
typedef struct old_memory_object_attr_info old_memory_object_attr_info_data_t;

typedef struct memory_object_attr_info	*memory_object_attr_info_t;
typedef struct memory_object_attr_info	memory_object_attr_info_data_t;

#define OLD_MEMORY_OBJECT_BEHAVE_INFO_COUNT   	((mach_msg_type_number_t) \
                (sizeof(old_memory_object_behave_info_data_t)/sizeof(int)))
#define MEMORY_OBJECT_BEHAVE_INFO_COUNT   	((mach_msg_type_number_t) \
                (sizeof(memory_object_behave_info_data_t)/sizeof(int)))
#define MEMORY_OBJECT_PERF_INFO_COUNT		((mach_msg_type_number_t) \
		(sizeof(memory_object_perf_info_data_t)/sizeof(int)))
#define OLD_MEMORY_OBJECT_ATTR_INFO_COUNT	((mach_msg_type_number_t) \
		(sizeof(old_memory_object_attr_info_data_t)/sizeof(int)))
#define MEMORY_OBJECT_ATTR_INFO_COUNT		((mach_msg_type_number_t) \
		(sizeof(memory_object_attr_info_data_t)/sizeof(int)))

#define invalid_memory_object_flavor(f)					\
	(f != MEMORY_OBJECT_ATTRIBUTE_INFO && 				\
	 f != MEMORY_OBJECT_PERFORMANCE_INFO && 			\
	 f != OLD_MEMORY_OBJECT_BEHAVIOR_INFO &&			\
	 f != MEMORY_OBJECT_BEHAVIOR_INFO &&				\
	 f != OLD_MEMORY_OBJECT_ATTRIBUTE_INFO)

#endif	/* _MACH_MEMORY_OBJECT_H_ */
Commit	Line	Data
1c79356b	1	/*
91447636	2	* Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
1c79356b A	3	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
ff6e181a 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. Please obtain a copy of the License at
	10	* http://www.opensource.apple.com/apsl/ and read it before using this
	11	* file.
1c79356b	12	*
ff6e181a A	13	* The Original Code and all software distributed under the License are
ff6e181a A	14	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
1c79356b A	15	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
1c79356b A	16	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
ff6e181a A	17	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	18	* Please see the License for the specific language governing rights and
	19	* limitations under the License.
1c79356b A	20	*
	21	* @APPLE_LICENSE_HEADER_END@
	22	*/
	23	/*
	24	* @OSF_COPYRIGHT@
	25	*/
	26	/*
	27	* Mach Operating System
	28	* Copyright (c) 1991,1990,1989,1988 Carnegie Mellon University
	29	* All Rights Reserved.
	30	*
	31	* Permission to use, copy, modify and distribute this software and its
	32	* documentation is hereby granted, provided that both the copyright
	33	* notice and this permission notice appear in all copies of the
	34	* software, derivative works or modified versions, and any portions
	35	* thereof, and that both notices appear in supporting documentation.
	36	*
	37	* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
	38	* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
	39	* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
	40	*
	41	* Carnegie Mellon requests users of this software to return to
	42	*
	43	* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
	44	* School of Computer Science
	45	* Carnegie Mellon University
	46	* Pittsburgh PA 15213-3890
	47	*
	48	* any improvements or extensions that they make and grant Carnegie Mellon
	49	* the rights to redistribute these changes.
	50	*/
	51	/*
	52	*/
	53	/*
	54	* File: memory_object.h
	55	* Author: Michael Wayne Young
	56	*
	57	* External memory management interface definition.
	58	*/
	59
	60	#ifndef _MACH_MEMORY_OBJECT_H_
	61	#define _MACH_MEMORY_OBJECT_H_
	62
	63	/*
	64	* User-visible types used in the external memory
	65	* management interface:
	66	*/
	67
	68	#include <mach/port.h>
91447636	69	#include <mach/message.h>
1c79356b A	70	#include <mach/machine/vm_types.h>
	71
	72	typedef mach_port_t memory_object_t;
	73	/* A memory object ... */
	74	/* Used by the kernel to retrieve */
	75	/* or store data */
	76
	77	typedef mach_port_t memory_object_control_t;
	78	/* Provided to a memory manager; ... */
	79	/* used to control a memory object */
	80
	81	typedef mach_port_t memory_object_name_t;
	82	/* Used to describe the memory ... */
	83	/* object in vm_regions() calls */
	84
	85	typedef mach_port_t memory_object_rep_t;
	86	/* Per-client handle for mem object */
	87	/* Used by user programs to specify */
	88	/* the object to map */
	89
	90	typedef int memory_object_copy_strategy_t;
	91	/* How memory manager handles copy: */
	92	#define MEMORY_OBJECT_COPY_NONE 0
	93	/* ... No special support */
	94	#define MEMORY_OBJECT_COPY_CALL 1
	95	/* ... Make call on memory manager */
	96	#define MEMORY_OBJECT_COPY_DELAY 2
	97	/* ... Memory manager doesn't
	98	* change data externally.
	99	*/
	100	#define MEMORY_OBJECT_COPY_TEMPORARY 3
	101	/* ... Memory manager doesn't
	102	* change data externally, and
	103	* doesn't need to see changes.
	104	*/
	105	#define MEMORY_OBJECT_COPY_SYMMETRIC 4
	106	/* ... Memory manager doesn't
	107	* change data externally,
	108	* doesn't need to see changes,
	109	* and object will not be
	110	* multiply mapped.
	111	*
	112	* XXX
	113	* Not yet safe for non-kernel use.
	114	*/
	115
	116	#define MEMORY_OBJECT_COPY_INVALID 5
	117	/* ... An invalid copy strategy,
	118	* for external objects which
	119	* have not been initialized.
	120	* Allows copy_strategy to be
	121	* examined without also
	122	* examining pager_ready and
	123	* internal.
	124	*/
	125
	126	typedef int memory_object_return_t;
	127	/* Which pages to return to manager
	128	this time (lock_request) */
	129	#define MEMORY_OBJECT_RETURN_NONE 0
	130	/* ... don't return any. */
	131	#define MEMORY_OBJECT_RETURN_DIRTY 1
	132	/* ... only dirty pages. */
	133	#define MEMORY_OBJECT_RETURN_ALL 2
134	/* ... dirty and precious pages. */
135	#define MEMORY_OBJECT_RETURN_ANYTHING 3
136	/* ... any resident page. */
137
138	#define MEMORY_OBJECT_NULL MACH_PORT_NULL
139
140
141	/*
142	* Types for the memory object flavor interfaces
143	*/
144
145	#define MEMORY_OBJECT_INFO_MAX (1024)
146	typedef int *memory_object_info_t;
147	typedef int memory_object_flavor_t;
148	typedef int memory_object_info_data_t[MEMORY_OBJECT_INFO_MAX];
149
150
151	#define OLD_MEMORY_OBJECT_BEHAVIOR_INFO 10
152	#define MEMORY_OBJECT_PERFORMANCE_INFO 11
153	#define OLD_MEMORY_OBJECT_ATTRIBUTE_INFO 12
154	#define MEMORY_OBJECT_ATTRIBUTE_INFO 14
155	#define MEMORY_OBJECT_BEHAVIOR_INFO 15
156
157
158	struct old_memory_object_behave_info {
159	memory_object_copy_strategy_t copy_strategy;
160	boolean_t temporary;
161	boolean_t invalidate;
162	};
163
164	struct memory_object_perf_info {
91447636 A	165	memory_object_cluster_size_t cluster_size;
91447636 A	166	boolean_t may_cache;
1c79356b A	167	};
	168
	169	struct old_memory_object_attr_info { /* old attr list */
	170	boolean_t object_ready;
	171	boolean_t may_cache;
	172	memory_object_copy_strategy_t copy_strategy;
	173	};
	174
	175	struct memory_object_attr_info {
	176	memory_object_copy_strategy_t copy_strategy;
91447636	177	memory_object_cluster_size_t cluster_size;
1c79356b A	178	boolean_t may_cache_object;
	179	boolean_t temporary;
	180	};
	181
	182	struct memory_object_behave_info {
	183	memory_object_copy_strategy_t copy_strategy;
	184	boolean_t temporary;
	185	boolean_t invalidate;
	186	boolean_t silent_overwrite;
	187	boolean_t advisory_pageout;
	188	};
	189
	190	typedef struct old_memory_object_behave_info *old_memory_object_behave_info_t;
	191	typedef struct old_memory_object_behave_info old_memory_object_behave_info_data_t;
	192
	193	typedef struct memory_object_behave_info *memory_object_behave_info_t;
	194	typedef struct memory_object_behave_info memory_object_behave_info_data_t;
	195
	196	typedef struct memory_object_perf_info *memory_object_perf_info_t;
	197	typedef struct memory_object_perf_info memory_object_perf_info_data_t;
	198
	199	typedef struct old_memory_object_attr_info *old_memory_object_attr_info_t;
	200	typedef struct old_memory_object_attr_info old_memory_object_attr_info_data_t;
	201
	202	typedef struct memory_object_attr_info *memory_object_attr_info_t;
	203	typedef struct memory_object_attr_info memory_object_attr_info_data_t;
	204
91447636 A	205	#define OLD_MEMORY_OBJECT_BEHAVE_INFO_COUNT ((mach_msg_type_number_t) \
	206	(sizeof(old_memory_object_behave_info_data_t)/sizeof(int)))
	207	#define MEMORY_OBJECT_BEHAVE_INFO_COUNT ((mach_msg_type_number_t) \
	208	(sizeof(memory_object_behave_info_data_t)/sizeof(int)))
	209	#define MEMORY_OBJECT_PERF_INFO_COUNT ((mach_msg_type_number_t) \
	210	(sizeof(memory_object_perf_info_data_t)/sizeof(int)))
	211	#define OLD_MEMORY_OBJECT_ATTR_INFO_COUNT ((mach_msg_type_number_t) \
	212	(sizeof(old_memory_object_attr_info_data_t)/sizeof(int)))
	213	#define MEMORY_OBJECT_ATTR_INFO_COUNT ((mach_msg_type_number_t) \
	214	(sizeof(memory_object_attr_info_data_t)/sizeof(int)))
1c79356b A	215
	216	#define invalid_memory_object_flavor(f) \
	217	(f != MEMORY_OBJECT_ATTRIBUTE_INFO && \
	218	f != MEMORY_OBJECT_PERFORMANCE_INFO && \
	219	f != OLD_MEMORY_OBJECT_BEHAVIOR_INFO && \
	220	f != MEMORY_OBJECT_BEHAVIOR_INFO && \
	221	f != OLD_MEMORY_OBJECT_ATTRIBUTE_INFO)
	222
	223	#endif /* _MACH_MEMORY_OBJECT_H_ */