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Annotation of kernel/vm/vm_fault.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:  * Mach Operating System
                     27:  * Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University
                     28:  * All Rights Reserved.
                     29:  * 
                     30:  * Permission to use, copy, modify and distribute this software and its
                     31:  * documentation is hereby granted, provided that both the copyright
                     32:  * notice and this permission notice appear in all copies of the
                     33:  * software, derivative works or modified versions, and any portions
                     34:  * thereof, and that both notices appear in supporting documentation.
                     35:  * 
                     36:  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
                     37:  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
                     38:  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
                     39:  * 
                     40:  * Carnegie Mellon requests users of this software to return to
                     41:  * 
                     42:  *  Software Distribution Coordinator  or  [email protected]
                     43:  *  School of Computer Science
                     44:  *  Carnegie Mellon University
                     45:  *  Pittsburgh PA 15213-3890
                     46:  * 
                     47:  * any improvements or extensions that they make and grant Carnegie Mellon
                     48:  * the rights to redistribute these changes.
                     49:  */
                     50: /*
                     51:  *     File:   vm/vm_fault.h
                     52:  *
                     53:  *     Page fault handling module declarations.
                     54:  */
                     55: 
                     56: #ifndef        _VM_VM_FAULT_H_
                     57: #define _VM_VM_FAULT_H_
                     58: 
                     59: #include <mach/kern_return.h>
                     60: 
                     61: /*
                     62:  *     Page fault handling based on vm_object only.
                     63:  */
                     64: 
                     65: typedef        kern_return_t   vm_fault_return_t;
                     66: #define VM_FAULT_SUCCESS               0
                     67: #define VM_FAULT_RETRY                 1
                     68: #define VM_FAULT_INTERRUPTED           2
                     69: #define VM_FAULT_MEMORY_SHORTAGE       3
                     70: #define VM_FAULT_FICTITIOUS_SHORTAGE   4
                     71: #define VM_FAULT_MEMORY_ERROR          5
                     72: 
                     73: extern void vm_fault_init();
                     74: extern vm_fault_return_t vm_fault_page();
                     75: 
                     76: extern void            vm_fault_cleanup();
                     77: /*
                     78:  *     Page fault handling based on vm_map (or entries therein)
                     79:  */
                     80: 
                     81: extern kern_return_t   vm_fault();
                     82: extern void            vm_fault_wire();
                     83: extern void            vm_fault_unwire();
                     84: 
                     85: extern kern_return_t   vm_fault_copy();        /* Copy pages from
                     86:                                                 * one object to another
                     87:                                                 */
                     88: #endif /* _VM_VM_FAULT_H_ */

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