/* * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved. * * @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, 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@ */ /* * 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 */ /* * 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) #endif /*_MACH_VM_BEHAVIOR_H_*/