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1.1 root 1: /*
2: * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * The contents of this file constitute Original Code as defined in and
7: * are subject to the Apple Public Source License Version 1.1 (the
8: * "License"). You may not use this file except in compliance with the
9: * License. Please obtain a copy of the License at
10: * http://www.apple.com/publicsource and read it before using this file.
11: *
12: * This Original Code and all software distributed under the License are
13: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
14: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
15: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
16: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
17: * License for the specific language governing rights and limitations
18: * under the License.
19: *
20: * @APPLE_LICENSE_HEADER_END@
21: */
22: /*
23: * @OSF_COPYRIGHT@
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: */
52: /*
53: * File: vm/vm_pageout.h
54: * Author: Avadis Tevanian, Jr.
55: * Date: 1986
56: *
57: * Declarations for the pageout daemon interface.
58: */
59:
60: #ifndef _VM_VM_PAGEOUT_H_
61: #define _VM_VM_PAGEOUT_H_
62:
63: #include <mach/boolean.h>
64: #include <mach/machine/vm_types.h>
65: #include <vm/vm_object.h>
66: #include <vm/vm_page.h>
67:
68: /*
69: * The following ifdef only exists because XMM must (currently)
70: * be given a page at a time. This should be removed
71: * in the future.
72: */
73: #define DATA_WRITE_MAX 32
74: #define POINTER_T(copy) (pointer_t)(copy)
75:
76: /*
77: * Exported routines.
78: */
79: extern void vm_pageout(void);
80:
81: extern vm_object_t vm_pageout_object_allocate(
82: vm_page_t m,
83: vm_size_t size,
84: vm_offset_t offset);
85:
86: extern void vm_pageout_object_terminate(
87: vm_object_t object);
88:
89: extern vm_page_t vm_pageout_setup(
90: vm_page_t m,
91: vm_object_t new_object,
92: vm_offset_t new_offset);
93:
94: extern void vm_pageout_cluster(
95: vm_page_t m);
96:
97: extern void vm_pageout_initialize_page(
98: vm_page_t m);
99:
100: extern void vm_pageclean_setup(
101: vm_page_t m,
102: vm_page_t new_m,
103: vm_object_t new_object,
104: vm_offset_t new_offset);
105:
106: extern void vm_pageclean_copy(
107: vm_page_t m,
108: vm_page_t new_m,
109: vm_object_t new_object,
110: vm_offset_t new_offset);
111:
112: /* UPL exported routines and structures */
113:
114: #define UPL_COMPOSITE_PAGE_LIST_MAX 16
115:
116:
117: #define upl_lock_init(object) mutex_init(&(object)->Lock, ETAP_VM_OBJ)
118: #define upl_lock(object) mutex_lock(&(object)->Lock)
119: #define upl_unlock(object) mutex_unlock(&(object)->Lock)
120:
121:
122: /* universal page list structure */
123:
124: struct upl {
125: decl_mutex_data(, Lock) /* Synchronization */
126: int ref_count;
127: int flags;
128: vm_object_t src_object; /* object derived from */
129: vm_offset_t offset;
130: vm_size_t size; /* size in bytes of the address space */
131: vm_offset_t kaddr; /* secondary mapping in kernel */
132: vm_object_t map_object;
133: };
134:
135:
136:
137: /* upl struct flags */
138: #define UPL_PAGE_LIST_MAPPED 0x1
139: #define UPL_KERNEL_MAPPED 0x2
140: #define UPL_CLEAR_DIRTY 0x4
141: #define UPL_COMPOSITE_LIST 0x8
142: #define UPL_INTERNAL 0x10
143:
144:
145:
146:
147:
148:
149:
150: #endif /* _VM_VM_PAGEOUT_H_ */
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