memguard.h revision 238502 
1/*-
2 * Copyright (c) 2005,
3 *     Bosko Milekic <bmilekic@FreeBSD.org>.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice unmodified, this list of conditions, and the following
10 *    disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *
26 * $FreeBSD: head/sys/vm/memguard.h 238502 2012-07-15 20:29:48Z mdf $
27 */
28
29#ifndef _VM_MEMGUARD_H_
30#define	_VM_MEMGUARD_H_
31
32#include "opt_vm.h"
33
34struct malloc_type;
35struct vm_map;
36
37#ifdef DEBUG_MEMGUARD
38unsigned long	memguard_fudge(unsigned long, const struct vm_map *);
39void	memguard_init(struct vm_map *);
40void 	*memguard_alloc(unsigned long, int);
41void	*memguard_realloc(void *, unsigned long, struct malloc_type *, int);
42void	memguard_free(void *);
43int	memguard_cmp_mtp(struct malloc_type *, unsigned long);
44int	memguard_cmp_zone(uma_zone_t);
45int	is_memguard_addr(void *);
46#else
47#define	memguard_fudge(size, xxx)	(size)
48#define	memguard_init(map)		do { } while (0)
49#define	memguard_alloc(size, flags)	NULL
50#define	memguard_realloc(a, s, mtp, f)	NULL
51#define	memguard_free(addr)		do { } while (0)
52#define	memguard_cmp_mtp(mtp, size)	0
53#define	memguard_cmp_zone(zone)		0
54#define	is_memguard_addr(addr)		0
55#endif
56
57#endif /* _VM_MEMGUARD_H_ */
58