MPD: poison.h Source File

MPD 0.20.18

poison.h
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1 /*
2 * Copyright 2003-2017 The Music Player Daemon Project
3 * http://www.musicpd.org
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18 */
19
20 #ifndef MPD_POISON_H
21 #define MPD_POISON_H
22
23 #include "check.h"
24
25 #ifndef NDEBUG
26
27 #ifdef HAVE_VALGRIND_MEMCHECK_H
28 #include <valgrind/memcheck.h>
29 #endif
30
31 #include <string.h>
32 #endif
33
40 static inline void
41 poison_noaccess(void *p, size_t length)
42 {
43 #ifdef NDEBUG
44 (void)p;
45 (void)length;
46 #else
47 memset(p, 0x01, length);
48
49 #ifdef HAVE_VALGRIND_MEMCHECK_H
50 (void)VALGRIND_MAKE_MEM_NOACCESS(p, length);
51 #endif
52 #endif
53 }
54
61 static inline void
62 poison_undefined(void *p, size_t length)
63 {
64 #ifdef NDEBUG
65 (void)p;
66 (void)length;
67 #else
68 memset(p, 0x02, length);
69
70 #ifdef HAVE_VALGRIND_MEMCHECK_H
71 (void)VALGRIND_MAKE_MEM_UNDEFINED(p, length);
72 #endif
73 #endif
74 }
75
76
77 #endif
check.h
poison_undefined
static void poison_undefined(void *p, size_t length)
Poisons the specified memory area and marks it as "not defined".
Definition: poison.h:62
poison_noaccess
static void poison_noaccess(void *p, size_t length)
Poisons the specified memory area and marks it as "not accessible".
Definition: poison.h:41