MPD 0.17~git
src/poison.h
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00001 /*
00002  * Copyright (C) 2003-2011 The Music Player Daemon Project
00003  * http://www.musicpd.org
00004  *
00005  * This program is free software; you can redistribute it and/or modify
00006  * it under the terms of the GNU General Public License as published by
00007  * the Free Software Foundation; either version 2 of the License, or
00008  * (at your option) any later version.
00009  *
00010  * This program is distributed in the hope that it will be useful,
00011  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00012  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00013  * GNU General Public License for more details.
00014  *
00015  * You should have received a copy of the GNU General Public License along
00016  * with this program; if not, write to the Free Software Foundation, Inc.,
00017  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
00018  */
00019 
00020 #ifndef MPD_POISON_H
00021 #define MPD_POISON_H
00022 
00023 #include "check.h"
00024 
00025 #ifndef NDEBUG
00026 
00027 #ifdef HAVE_VALGRIND_MEMCHECK_H
00028 #include <valgrind/memcheck.h>
00029 #endif
00030 
00031 #include <string.h>
00032 #endif
00033 
00040 static inline void
00041 poison_noaccess(void *p, size_t length)
00042 {
00043 #ifdef NDEBUG
00044         (void)p;
00045         (void)length;
00046 #else
00047         memset(p, 0x01, length);
00048 
00049 #ifdef HAVE_VALGRIND_MEMCHECK_H
00050         (void)VALGRIND_MAKE_MEM_NOACCESS(p, length);
00051 #endif
00052 #endif
00053 }
00054 
00061 static inline void
00062 poison_undefined(void *p, size_t length)
00063 {
00064 #ifdef NDEBUG
00065         (void)p;
00066         (void)length;
00067 #else
00068         memset(p, 0x02, length);
00069 
00070 #ifdef HAVE_VALGRIND_MEMCHECK_H
00071         (void)VALGRIND_MAKE_MEM_UNDEFINED(p, length);
00072 #endif
00073 #endif
00074 }
00075 
00076 
00077 #endif