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

/*
 * Copyright (c) 2000-2002 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@
 */
/*
 * @OSF_COPYRIGHT@
 */
/*
 *	File:	mach/vm_behavior.h
 *
 *	Virtual memory map behavior definitions.
 *
 */

#ifndef	_MACH_VM_BEHAVIOR_H_
#define _MACH_VM_BEHAVIOR_H_

/*
 *	Types defined:
 *
 *	vm_behavior_t	behavior codes.
 */

typedef int		vm_behavior_t;

/*
 *	Enumeration of valid values for vm_behavior_t.
 *	These describe expected page reference behavior for 
 *	for a given range of virtual memory.  For implementation 
 *	details see vm/vm_fault.c
 */


#define VM_BEHAVIOR_DEFAULT	((vm_behavior_t) 0)	/* default */
#define VM_BEHAVIOR_RANDOM	((vm_behavior_t) 1)	/* random */
#define VM_BEHAVIOR_SEQUENTIAL	((vm_behavior_t) 2)	/* forward sequential */
#define VM_BEHAVIOR_RSEQNTL	((vm_behavior_t) 3)	/* reverse sequential */
#define VM_BEHAVIOR_WILLNEED	((vm_behavior_t) 4)	/* will need in near future */
#define VM_BEHAVIOR_DONTNEED	((vm_behavior_t) 5)	/* dont need in near future */

#endif	/*_MACH_VM_BEHAVIOR_H_*/
Commit	Line	Data
1c79356b	1	/*
9bccf70c	2	* Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
1c79356b A	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	* @OSF_COPYRIGHT@
	24	*/
1c79356b A	25	/*
	26	* File: mach/vm_behavior.h
	27	*
	28	* Virtual memory map behavior definitions.
	29	*
	30	*/
	31
	32	#ifndef _MACH_VM_BEHAVIOR_H_
	33	#define _MACH_VM_BEHAVIOR_H_
	34
	35	/*
	36	* Types defined:
	37	*
	38	* vm_behavior_t behavior codes.
	39	*/
	40
	41	typedef int vm_behavior_t;
	42
	43	/*
	44	* Enumeration of valid values for vm_behavior_t.
	45	* These describe expected page reference behavior for
	46	* for a given range of virtual memory. For implementation
	47	* details see vm/vm_fault.c
	48	*/
	49
	50
	51	#define VM_BEHAVIOR_DEFAULT ((vm_behavior_t) 0) /* default */
	52	#define VM_BEHAVIOR_RANDOM ((vm_behavior_t) 1) /* random */
	53	#define VM_BEHAVIOR_SEQUENTIAL ((vm_behavior_t) 2) /* forward sequential */
	54	#define VM_BEHAVIOR_RSEQNTL ((vm_behavior_t) 3) /* reverse sequential */
9bccf70c A	55	#define VM_BEHAVIOR_WILLNEED ((vm_behavior_t) 4) /* will need in near future */
9bccf70c A	56	#define VM_BEHAVIOR_DONTNEED ((vm_behavior_t) 5) /* dont need in near future */
1c79356b A	57
1c79356b A	58	#endif /_MACH_VM_BEHAVIOR_H_/