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poison: added valgrind support

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If the header valgrind/memcheck.h is available, add
VALGRIND_MAKE_MEM_NOACCESS() and VALGRIND_MAKE_MEM_UNDEFINED()
support, which enables nice warnings in the valgrind memory checker.
This commit is contained in:
Max Kellermann 2009-03-09 19:10:18 +01:00
parent fd76e29fba
commit 940af669b3
2 changed files with 15 additions and 0 deletions
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1
configure.ac
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@ -101,6 +101,7 @@ AC_CHECK_LIB(nsl,gethostbyname,MPD_LIBS="$MPD_LIBS -lnsl",)
AC_CHECK_LIB(m,exp,MPD_LIBS="$MPD_LIBS -lm",)
AC_CHECK_HEADERS(locale.h)
AC_CHECK_HEADERS(valgrind/memcheck.h)
dnl

14
src/poison.h
View File

@ -20,6 +20,12 @@
#define MPD_POISON_H
#ifndef NDEBUG
#include "config.h"
#ifdef HAVE_VALGRIND_MEMCHECK_H
#include <valgrind/memcheck.h>
#endif
#include <string.h>
#endif
@ -37,6 +43,10 @@ poison_noaccess(void *p, size_t length)
(void)length;
#else
memset(p, 0x01, length);
#ifdef HAVE_VALGRIND_MEMCHECK_H
VALGRIND_MAKE_MEM_NOACCESS(p, length);
#endif
#endif
}
@ -54,6 +64,10 @@ poison_undefined(void *p, size_t length)
(void)length;
#else
memset(p, 0x02, length);
#ifdef HAVE_VALGRIND_MEMCHECK_H
VALGRIND_MAKE_MEM_UNDEFINED(p, length);
#endif
#endif
}