FreeBSD/Linux Kernel Cross Reference
sys/vm/memguard.h
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 * $FreeBSD$
27 */
28
29 #ifndef _VM_MEMGUARD_H_
30 #define _VM_MEMGUARD_H_
31
32 #include "opt_vm.h"
33
34 struct malloc_type;
35 struct vm_map;
36 struct vmem;
37
38 #ifdef DEBUG_MEMGUARD
39 unsigned long memguard_fudge(unsigned long, const struct vm_map *);
40 void memguard_init(struct vmem *);
41 void *memguard_alloc(unsigned long, int);
42 void *memguard_realloc(void *, unsigned long, struct malloc_type *, int);
43 void memguard_free(void *);
44 int memguard_cmp_mtp(struct malloc_type *, unsigned long);
45 int memguard_cmp_zone(uma_zone_t);
46 int is_memguard_addr(void *);
47 #else
48 #define memguard_fudge(size, xxx) (size)
49 #define memguard_init(map) do { } while (0)
50 #define memguard_alloc(size, flags) NULL
51 #define memguard_realloc(a, s, mtp, f) NULL
52 #define memguard_free(addr) do { } while (0)
53 #define memguard_cmp_mtp(mtp, size) 0
54 #define memguard_cmp_zone(zone) 0
55 #define is_memguard_addr(addr) 0
56 #endif
57
58 #endif /* _VM_MEMGUARD_H_ */
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