1/*
2 * Copyright (c) 1991, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * The Mach Operating System project at Carnegie-Mellon University.
7 *
8 * Redistribution and use in source and binary forms, with or without

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56 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
57 * School of Computer Science
58 * Carnegie Mellon University
59 * Pittsburgh PA 15213-3890
60 *
61 * any improvements or extensions that they make and grant Carnegie the
62 * rights to redistribute these changes.
63 *
64 * $Id: vm_object.h,v 1.12 1995/03/12 12:42:00 bde Exp $
65 */
66
67/*
68 * Virtual memory object module definitions.
69 */
70
71#ifndef _VM_OBJECT_
72#define _VM_OBJECT_
73
74#ifdef KERNEL
75#include <sys/proc.h> /* XXX for wakeup() */
76#endif
77
78#include <vm/vm_page.h>
79#include <vm/vm_pager.h>
80
81/*
82 * Types defined:
83 *
84 * vm_object_t Virtual memory object.
85 */

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119struct vm_object_hash_entry {
120 TAILQ_ENTRY(vm_object_hash_entry) hash_links; /* hash chain links */
121 vm_object_t object; /* object represened */
122};
123
124typedef struct vm_object_hash_entry *vm_object_hash_entry_t;
125
126#ifdef KERNEL
127extern int vm_object_cache_max;
128
129TAILQ_HEAD(object_q, vm_object);
130
131struct object_q vm_object_cached_list; /* list of objects persisting */
132int vm_object_cached; /* size of cached list */
133simple_lock_data_t vm_cache_lock; /* lock for object cache */
134
135struct object_q vm_object_list; /* list of allocated objects */
136long vm_object_count; /* count of all objects */

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