X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/8ad349bb6ed4a0be06e34c92be0d98b92e078db4..ea3f04195ba4a5034c9c8e9b726d4f7ce96f1832:/osfmk/vm/vm_external.h diff --git a/osfmk/vm/vm_external.h b/osfmk/vm/vm_external.h index 27d4e759c..477822a7e 100644 --- a/osfmk/vm/vm_external.h +++ b/osfmk/vm/vm_external.h @@ -1,147 +1,75 @@ /* * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. * - * @APPLE_LICENSE_OSREFERENCE_HEADER_START@ - * - * 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 2.0 (the 'License'). You may not use this file except in - * compliance with the License. The rights granted to you under the - * License may not be used to create, or enable the creation or - * redistribution of, unlawful or unlicensed copies of an Apple operating - * system, or to circumvent, violate, or enable the circumvention or - * violation of, any terms of an Apple operating system software license - * agreement. + * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * - * Please obtain a copy of the License at - * http://www.opensource.apple.com/apsl/ and read it before using this - * file. + * 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 2.0 (the 'License'). You may not use this file except in + * compliance with the License. The rights granted to you under the License + * may not be used to create, or enable the creation or redistribution of, + * unlawful or unlicensed copies of an Apple operating system, or to + * circumvent, violate, or enable the circumvention or violation of, any + * terms of an Apple operating system software license agreement. * - * 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, QUIET ENJOYMENT OR NON-INFRINGEMENT. - * Please see the License for the specific language governing rights and + * Please obtain a copy of the License at + * http://www.opensource.apple.com/apsl/ 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, QUIET ENJOYMENT OR NON-INFRINGEMENT. + * Please see the License for the specific language governing rights and * limitations under the License. * - * @APPLE_LICENSE_OSREFERENCE_HEADER_END@ + * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* * @OSF_COPYRIGHT@ */ -/* +/* * Mach Operating System * Copyright (c) 1991,1990,1989 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. */ /* */ -#ifndef VM_VM_EXTERNAL_H_ +#ifndef VM_VM_EXTERNAL_H_ #define VM_VM_EXTERNAL_H_ #include +#include #include -/* - * External page management hint technology - * - * The data structure exported by this module maintains - * a (potentially incomplete) map of the pages written - * to external storage for a range of virtual memory. - */ - -typedef char *vm_external_map_t; -#define VM_EXTERNAL_NULL ((char *) 0) - /* * The states that may be recorded for a page of external storage. */ -typedef int vm_external_state_t; -#define VM_EXTERNAL_STATE_EXISTS 1 -#define VM_EXTERNAL_STATE_UNKNOWN 2 -#define VM_EXTERNAL_STATE_ABSENT 3 - -/* - * Useful macros - */ -#define stob(s) ((atop_32((s)) + 07) >> 3) - -/* - * Routines exported by this module. - */ - /* Initialize the module */ -extern void vm_external_module_initialize(void); - - -extern vm_external_map_t vm_external_create( - /* Create a vm_external_map_t */ - vm_offset_t size); - -extern void vm_external_destroy( - /* Destroy one */ - vm_external_map_t map, - vm_size_t size); - -extern vm_size_t vm_external_map_size( - /* Return size of map in bytes */ - vm_offset_t size); - -extern void vm_external_copy( - /* Copy one into another */ - vm_external_map_t old_map, - vm_size_t old_size, - vm_external_map_t new_map); - -extern void vm_external_state_set( - /* Set state of a page to - * VM_EXTERNAL_STATE_EXISTS */ - vm_external_map_t map, - vm_offset_t offset); - -extern void vm_external_state_clr( - /* clear page state - */ - vm_external_map_t map, - vm_offset_t offset); - -#define vm_external_state_get(map, offset) \ - (((map) != VM_EXTERNAL_NULL) ? \ - _vm_external_state_get((map), (offset)) : \ - VM_EXTERNAL_STATE_UNKNOWN) - /* Retrieve the state for a - * given page, if known. */ - -extern vm_external_state_t _vm_external_state_get( - /* HIDDEN routine */ - vm_external_map_t map, - vm_offset_t offset); +typedef int vm_external_state_t; +#define VM_EXTERNAL_STATE_EXISTS 1 +#define VM_EXTERNAL_STATE_UNKNOWN 2 +#define VM_EXTERNAL_STATE_ABSENT 3 -boolean_t vm_external_within( - /* Check if new object size - * fits in current map */ - vm_size_t new_size, - vm_size_t old_size); -#endif /* VM_VM_EXTERNAL_H_ */ +#endif /* VM_VM_EXTERNAL_H_ */