blob: 36a07a06df6b2aacf144f52aed4a0c37d4be11b9 [file] [log] [blame]
Damien Millerd7834352006-08-05 12:39:39 +10001/* $OpenBSD: monitor_mm.h,v 1.4 2006/08/03 03:34:42 deraadt Exp $ */
Ben Lindstrom28364ec2002-03-26 03:42:20 +00002
Ben Lindstrom7a2073c2002-03-22 02:30:41 +00003/*
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_
Ben Lindstrom7a2073c2002-03-22 02:30:41 +000030
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 int write; /* used to writing to other party */
46 int read; /* used for reading from other party */
47};
48
49RB_PROTOTYPE(mmtree, mm_share, next, mm_compare)
50
51#define MM_MINSIZE 128
52
53#define MM_ADDRESS_END(x) (void *)((u_char *)(x)->address + (x)->size)
54
55struct mm_master *mm_create(struct mm_master *, size_t);
56void mm_destroy(struct mm_master *);
57
58void mm_share_sync(struct mm_master **, struct mm_master **);
59
60void *mm_malloc(struct mm_master *, size_t);
61void *mm_xmalloc(struct mm_master *, size_t);
62void mm_free(struct mm_master *, void *);
63
64void mm_memvalid(struct mm_master *, void *, size_t);
65#endif /* _MM_H_ */