From f07a4c844da9f0ecae5bbee1ab94be56505f26f7 Mon Sep 17 00:00:00 2001 From: Thomas Bushnell Date: Tue, 25 Feb 1997 21:28:37 +0000 Subject: Initial source --- vm/vm_fault.h | 64 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 64 insertions(+) create mode 100644 vm/vm_fault.h (limited to 'vm/vm_fault.h') diff --git a/vm/vm_fault.h b/vm/vm_fault.h new file mode 100644 index 00000000..eee39994 --- /dev/null +++ b/vm/vm_fault.h @@ -0,0 +1,64 @@ +/* + * 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 Software.Distribution@CS.CMU.EDU + * 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 + +/* + * 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_ -- cgit v1.2.3