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Ben Lindstrom28364ec2002-03-26 03:42:20 +00001/* $OpenBSD: monitor_mm.h,v 1.2 2002/03/26 03:24:01 stevesk Exp $ */
2
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_
Kevin Steves6205a182002-03-26 00:12:49 +000030#include "openbsd-compat/tree.h"
Ben Lindstrom7a2073c2002-03-22 02:30:41 +000031
32struct mm_share {
33 RB_ENTRY(mm_share) next;
34 void *address;
35 size_t size;
36};
37
38struct mm_master {
39 RB_HEAD(mmtree, mm_share) rb_free;
40 struct mmtree rb_allocated;
41 void *address;
42 size_t size;
43
44 struct mm_master *mmalloc; /* Used to completely share */
45
46 int write; /* used to writing to other party */
47 int read; /* used for reading from other party */
48};
49
50RB_PROTOTYPE(mmtree, mm_share, next, mm_compare)
51
52#define MM_MINSIZE 128
53
54#define MM_ADDRESS_END(x) (void *)((u_char *)(x)->address + (x)->size)
55
56struct mm_master *mm_create(struct mm_master *, size_t);
57void mm_destroy(struct mm_master *);
58
59void mm_share_sync(struct mm_master **, struct mm_master **);
60
61void *mm_malloc(struct mm_master *, size_t);
62void *mm_xmalloc(struct mm_master *, size_t);
63void mm_free(struct mm_master *, void *);
64
65void mm_memvalid(struct mm_master *, void *, size_t);
66#endif /* _MM_H_ */