Commit becf5a18 authored by Pekka Pessi's avatar Pekka Pessi

su_alloc.c: using safe free

darcs-hash:20080307172405-65a35-cf9b4482724a04f4e7f2d13665c7f644b1730216.gz
parent 31230e62
......@@ -203,6 +203,12 @@ int (*_su_home_mutex_unlocker)(void *mutex);
void (*_su_home_destroy_mutexes)(void *mutex);
#if HAVE_FREE_NULL
#define safefree(x) free((x))
#else
su_inline void safefree(void *b) { b ? free(b) : (void)0; }
#endif
#define MEMLOCK(h) \
((void)((h) && (h)->suh_lock ? _su_home_locker((h)->suh_lock) : 0), (h)->suh_blocks)
#define UNLOCK(h) ((void)((h) && (h)->suh_lock ? _su_home_unlocker((h)->suh_lock) : 0), NULL)
......@@ -457,7 +463,7 @@ void *sub_alloc(su_home_t *home,
home->suh_blocks = b2;
if (sub && !sub->sub_auto)
free(sub);
safefree(sub);
sub = b2;
}
......@@ -500,7 +506,7 @@ void *sub_alloc(su_home_t *home,
subhome->suh_blocks = su_hash_alloc(SUB_N);
if (!subhome->suh_blocks)
return (void)free(data), NULL;
return (void)safefree(data), NULL;
subhome->suh_size = (unsigned)size;
subhome->suh_blocks->sub_parent = home;
......@@ -555,7 +561,7 @@ void *su_home_new(isize_t size)
if (home->suh_blocks)
home->suh_blocks->sub_hauto = 0;
else
free(home), home = NULL;
safefree(home), home = NULL;
}
return home;
......@@ -670,7 +676,7 @@ int su_home_unref(su_home_t *home)
int hauto = sub->sub_hauto;
_su_home_deinit(home);
if (!hauto)
free(home);
safefree(home);
/* UNLOCK(home); */
return 1;
}
......@@ -827,7 +833,7 @@ void su_free(su_home_t *home, void *data)
UNLOCK(home);
}
free(data);
safefree(data);
}
/** Check home consistency.
......@@ -977,7 +983,7 @@ void _su_home_deinit(su_home_t *home)
}
else if (su_is_preloaded(b, b->sub_nodes[i].sua_data))
continue;
free(b->sub_nodes[i].sua_data);
safefree(b->sub_nodes[i].sua_data);
}
}
......
......@@ -202,6 +202,28 @@ SAC_SU_DEFINE([SU_HAVE_TAGSTACK], 1, [
Define this as 1 if your compiler puts the variable argument list nicely in memory])
fi
### ======================================================================
### Test if free(0) fails
###
AC_CACHE_CHECK([for graceful free(0)],[ac_cv_free_null],[
ac_cv_free_null=no
AC_RUN_IFELSE([AC_LANG_SOURCE([[
#include <stdlib.h>
int main(int avc, char **av)
{
free(0);
return 0;
}
]])],[ac_cv_free_null=yes],[ac_cv_free_null=no],[ac_cv_free_null=no])])
if test $ac_cv_free_null = yes ; then
AC_DEFINE([HAVE_FREE_NULL], 1, [
Define this as 1 if your c library does not crash with free(0)])
fi
dnl ======================================================================
dnl Socket features
......
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