Annotation of kernel/mach/vm_policy.h, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
                      3:  *
                      4:  * @APPLE_LICENSE_HEADER_START@
                      5:  * 
                      6:  * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
                      7:  * Reserved.  This file contains Original Code and/or Modifications of
                      8:  * Original Code as defined in and that are subject to the Apple Public
                      9:  * Source License Version 1.1 (the "License").  You may not use this file
                     10:  * except in compliance with the License.  Please obtain a copy of the
                     11:  * License at http://www.apple.com/publicsource and read it before using
                     12:  * this file.
                     13:  * 
                     14:  * The Original Code and all software distributed under the License are
                     15:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
                     16:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
                     17:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
                     18:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
                     19:  * License for the specific language governing rights and limitations
                     20:  * under the License.
                     21:  * 
                     22:  * @APPLE_LICENSE_HEADER_END@
                     23:  */
                     24: 
                     25: /*
                     26:  * Definitions for parameters to vm_deactivate and vm_set_policy.
                     27:  *
                     28:  * Copyright (c) 1993 NeXT, Inc.
                     29:  *
                     30:  * HISTORY
                     31:  *
                     32:  *  23Jan93    Brian Pinkerton at NeXT
                     33:  *     Created.
                     34:  */
                     35: 
                     36: #ifndef        _VM_POLICY_H
                     37: #define        _VM_POLICY_H
                     38: 
                     39: /*
                     40:  *  Flags for vm_deactivate
                     41:  */
                     42: #define VM_DEACTIVATE_NOW              0x0     /* most aggressive: free mem */
                     43: #define        VM_DEACTIVATE_SOON              0x1     /* less aggressive */
                     44: #define VM_DEACTIVATE_SHARED           0x2     /* deactivate shared mem too */
                     45: 
                     46: /*
                     47:  *  Flags for vm_set_policy
                     48:  */
                     49: #define VM_POLICY_RANDOM               0x0     /* access pattern is random */
                     50: #define VM_POLICY_SEQ_FREE             0x1     /* free pages on sequential */
                     51: #define VM_POLICY_SEQ_DEACTIVATE       0x2     /* deactivate pages on seq */
                     52: #define VM_POLICY_PAGE_AHEAD           0x4     /* page ahead */
                     53: 
                     54: #define        VM_POLICY_SEQUENTIAL (VM_POLICY_SEQ_FREE | VM_POLICY_SEQ_DEACTIVATE)
                     55: 
                     56: #endif /* _VM_POLICY_H */
                     57: 

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