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# src/poison.h

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    00001 /*
    00002  * Copyright (C) 2003-2010 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