osfmk/mach/vm_behavior.h

   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  * @OSF_COPYRIGHT@
  24  */
  25 /*
  26  * HISTORY
  27  *
  28  * Revision 1.1.1.1  1998/09/22 21:05:31  wsanchez
  29  * Import of Mac OS X kernel (~semeria)
  30  *
  31  * Revision 1.1.1.1  1998/03/07 02:25:46  wsanchez
  32  * Import of OSF Mach kernel (~mburg)
  33  *
  34  * Revision 1.1.10.2  1994/09/23  02:44:05  ezf
  35  *      change marker to not FREE
  36  *      [1994/09/22  21:43:34  ezf]
  37  *
  38  * Revision 1.1.10.1  1994/08/07  20:50:20  bolinger
  39  *      Import colo_shared revision into NMK18.
  40  *      [1994/08/02  16:41:42  bolinger]
  41  *
  42  * Revision 1.1.8.1  1994/07/08  20:09:11  dwm
  43  *      mk6 CR227 - bring vm_behavior constants up to spec.
  44  *      [1994/07/08  20:02:37  dwm]
  45  *
  46  * Revision 1.1.4.3  1993/09/17  21:35:31  robert
  47  *      change marker to OSF_FREE_COPYRIGHT
  48  *      [1993/09/17  21:28:53  robert]
  49  *
  50  * Revision 1.1.4.2  1993/06/04  15:14:02  jeffc
  51  *      CR9193 - MK5.0 merge.
  52  *      [1993/06/04  13:54:38  jeffc]
  53  *
  54  * Revision 3.0  92/12/31  22:14:09  ede
  55  *      Initial revision for OSF/1 R1.3
  56  *
  57  * $EndLog$
  58  */
  59 /*
  60  *      File:   mach/vm_behavior.h
  61  *
  62  *      Virtual memory map behavior definitions.
  63  *
  64  */
  65
  66 #ifndef _MACH_VM_BEHAVIOR_H_
  67 #define _MACH_VM_BEHAVIOR_H_
  68
  69 /*
  70  *      Types defined:
  71  *
  72  *      vm_behavior_t   behavior codes.
  73  */
  74
  75 typedef int             vm_behavior_t;
  76
  77 /*
  78  *      Enumeration of valid values for vm_behavior_t.
  79  *      These describe expected page reference behavior for
  80  *      for a given range of virtual memory.  For implementation
  81  *      details see vm/vm_fault.c
  82  */
  83
  84
  85 #define VM_BEHAVIOR_DEFAULT     ((vm_behavior_t) 0)     /* default */
  86 #define VM_BEHAVIOR_RANDOM      ((vm_behavior_t) 1)     /* random */
  87 #define VM_BEHAVIOR_SEQUENTIAL  ((vm_behavior_t) 2)     /* forward sequential */
  88 #define VM_BEHAVIOR_RSEQNTL     ((vm_behavior_t) 3)     /* reverse sequential */
  89
  90 #endif  /*_MACH_VM_BEHAVIOR_H_*/