X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/1c79356b52d46aa6b508fb032f5ae709b1f2897b..bca245acd4c03fd752d1a45f011ad495e60fe53d:/osfmk/mach/vm_behavior.h diff --git a/osfmk/mach/vm_behavior.h b/osfmk/mach/vm_behavior.h index 1fe81758c..727980d51 100644 --- a/osfmk/mach/vm_behavior.h +++ b/osfmk/mach/vm_behavior.h @@ -1,61 +1,33 @@ /* - * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. + * 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 + * @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 OR NON-INFRINGEMENT. Please see the - * License for the specific language governing rights and limitations - * under the License. - * - * @APPLE_LICENSE_HEADER_END@ + * 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_COPYRIGHT@ */ -/* - * HISTORY - * - * Revision 1.1.1.1 1998/09/22 21:05:31 wsanchez - * Import of Mac OS X kernel (~semeria) - * - * Revision 1.1.1.1 1998/03/07 02:25:46 wsanchez - * Import of OSF Mach kernel (~mburg) - * - * Revision 1.1.10.2 1994/09/23 02:44:05 ezf - * change marker to not FREE - * [1994/09/22 21:43:34 ezf] - * - * Revision 1.1.10.1 1994/08/07 20:50:20 bolinger - * Import colo_shared revision into NMK18. - * [1994/08/02 16:41:42 bolinger] - * - * Revision 1.1.8.1 1994/07/08 20:09:11 dwm - * mk6 CR227 - bring vm_behavior constants up to spec. - * [1994/07/08 20:02:37 dwm] - * - * Revision 1.1.4.3 1993/09/17 21:35:31 robert - * change marker to OSF_FREE_COPYRIGHT - * [1993/09/17 21:28:53 robert] - * - * Revision 1.1.4.2 1993/06/04 15:14:02 jeffc - * CR9193 - MK5.0 merge. - * [1993/06/04 13:54:38 jeffc] - * - * Revision 3.0 92/12/31 22:14:09 ede - * Initial revision for OSF/1 R1.3 - * - * $EndLog$ - */ /* * File: mach/vm_behavior.h * @@ -63,7 +35,7 @@ * */ -#ifndef _MACH_VM_BEHAVIOR_H_ +#ifndef _MACH_VM_BEHAVIOR_H_ #define _MACH_VM_BEHAVIOR_H_ /* @@ -72,19 +44,36 @@ * vm_behavior_t behavior codes. */ -typedef int vm_behavior_t; +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 + * 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 */ +/* + * The following behaviors affect the memory region's future behavior + * and are stored in the VM map entry data structure. + */ +#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 */ + +/* + * The following "behaviors" affect the memory region only at the time of the + * call and are not stored in the VM map entry. + */ +#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 */ +#define VM_BEHAVIOR_FREE ((vm_behavior_t) 6) /* free memory without write-back */ +#define VM_BEHAVIOR_ZERO_WIRED_PAGES ((vm_behavior_t) 7) /* zero out the wired pages of an entry if it is being deleted without unwiring them first */ +#define VM_BEHAVIOR_REUSABLE ((vm_behavior_t) 8) +#define VM_BEHAVIOR_REUSE ((vm_behavior_t) 9) +#define VM_BEHAVIOR_CAN_REUSE ((vm_behavior_t) 10) +#define VM_BEHAVIOR_PAGEOUT ((vm_behavior_t) 11) -#endif /*_MACH_VM_BEHAVIOR_H_*/ +#endif /*_MACH_VM_BEHAVIOR_H_*/