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1/* $OpenBSD: monitor_mm.h,v 1.6 2014/01/04 17:50:55 tedu Exp $ */
2
3/*
4 * Copyright 2002 Niels Provos <provos@citi.umich.edu>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28#ifndef _MM_H_
29#define _MM_H_
30
31struct mm_share {
32 RB_ENTRY(mm_share) next;
33 void *address;
34 size_t size;
35};
36
37struct mm_master {
38 RB_HEAD(mmtree, mm_share) rb_free;
39 struct mmtree rb_allocated;
40 void *address;
41 size_t size;
42
43 struct mm_master *mmalloc; /* Used to completely share */
44};
45
46RB_PROTOTYPE(mmtree, mm_share, next, mm_compare)
47
48#define MM_MINSIZE 128
49
50#define MM_ADDRESS_END(x) (void *)((char *)(x)->address + (x)->size)
51
52struct mm_master *mm_create(struct mm_master *, size_t);
53void mm_destroy(struct mm_master *);
54
55void mm_share_sync(struct mm_master **, struct mm_master **);
56
57void *mm_malloc(struct mm_master *, size_t);
58void *mm_xmalloc(struct mm_master *, size_t);
59void mm_free(struct mm_master *, void *);
60
61void mm_memvalid(struct mm_master *, void *, size_t);
62#endif /* _MM_H_ */