Source to vm/vm_fault.h


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/*
 * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
 *
 * @[email protected]
 * 
 * "Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
 * Reserved.  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 1.0 (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.
 * 
 * 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."
 * 
 * @[email protected]
 */

/* 
 * Mach Operating System
 * Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University
 * All Rights Reserved.
 * 
 * Permission to use, copy, modify and distribute this software and its
 * documentation is hereby granted, provided that both the copyright
 * notice and this permission notice appear in all copies of the
 * software, derivative works or modified versions, and any portions
 * thereof, and that both notices appear in supporting documentation.
 * 
 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 * 
 * Carnegie Mellon requests users of this software to return to
 * 
 *  Software Distribution Coordinator  or  [email protected]
 *  School of Computer Science
 *  Carnegie Mellon University
 *  Pittsburgh PA 15213-3890
 * 
 * any improvements or extensions that they make and grant Carnegie Mellon
 * the rights to redistribute these changes.
 */
/*
 *	File:	vm/vm_fault.h
 *
 *	Page fault handling module declarations.
 */

#ifndef	_VM_VM_FAULT_H_
#define _VM_VM_FAULT_H_

#include <mach/kern_return.h>

/*
 *	Page fault handling based on vm_object only.
 */

typedef	kern_return_t	vm_fault_return_t;
#define VM_FAULT_SUCCESS		0
#define VM_FAULT_RETRY			1
#define VM_FAULT_INTERRUPTED		2
#define VM_FAULT_MEMORY_SHORTAGE 	3
#define VM_FAULT_FICTITIOUS_SHORTAGE 	4
#define VM_FAULT_MEMORY_ERROR		5

extern void vm_fault_init();
extern vm_fault_return_t vm_fault_page();

extern void		vm_fault_cleanup();
/*
 *	Page fault handling based on vm_map (or entries therein)
 */

extern kern_return_t	vm_fault();
extern void		vm_fault_wire();
extern void		vm_fault_unwire();

extern kern_return_t	vm_fault_copy();	/* Copy pages from
						 * one object to another
						 */
#endif	/* _VM_VM_FAULT_H_ */