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| -rw-r--r-- | Makefile.am | 1 | ||||
| -rw-r--r-- | src/poison.h | 61 |
2 files changed, 62 insertions, 0 deletions
diff --git a/Makefile.am b/Makefile.am index 2ca101720..4eba6d03a 100644 --- a/Makefile.am +++ b/Makefile.am @@ -107,6 +107,7 @@ mpd_headers = \ src/playlist_print.h \ src/playlist_save.h \ src/playlist_state.h \ + src/poison.h \ src/riff.h \ src/aiff.h \ src/queue.h \ diff --git a/src/poison.h b/src/poison.h new file mode 100644 index 000000000..d37ff233e --- /dev/null +++ b/src/poison.h @@ -0,0 +1,61 @@ +/* + * Copyright (C) 2003-2009 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#ifndef MPD_POISON_H +#define MPD_POISON_H + +#ifndef NDEBUG +#include <string.h> +#endif + +/** + * Poisons the specified memory area and marks it as "not accessible". + * + * @param p pointer to the memory area + * @param length number of bytes to poison + */ +static inline void +poison_noaccess(void *p, size_t length) +{ +#ifdef NDEBUG + (void)p; + (void)length; +#else + memset(p, 0x01, length); +#endif +} + +/** + * Poisons the specified memory area and marks it as "not defined". + * + * @param p pointer to the memory area + * @param length number of bytes to poison + */ +static inline void +poison_undefined(void *p, size_t length) +{ +#ifdef NDEBUG + (void)p; + (void)length; +#else + memset(p, 0x02, length); +#endif +} + + +#endif |