GC_API void GC_CALL GC_debug_end_stubborn_change(const void *p)
{
const void * q = GC_base_C(p);
if (NULL == q) {
ABORT_ARG1("GC_debug_end_stubborn_change: bad arg", ": %p", p);
}
GC_end_stubborn_change(q);
}
GC_API void GC_CALL GC_debug_change_stubborn(const void *p)
{
const void * q = GC_base_C(p);
hdr * hhdr;
if (q == 0) {
ABORT_ARG1("GC_debug_change_stubborn: bad arg", ": %p", p);
}
hhdr = HDR(q);
if (hhdr -> hb_obj_kind != STUBBORN) {
ABORT_ARG1("GC_debug_change_stubborn: arg not stubborn", ": %p", p);
}
GC_change_stubborn(q);
}
STATIC int GC_register_disappearing_link_inner(
struct dl_hashtbl_s *dl_hashtbl, void **link,
const void *obj, const char *tbl_log_name)
{
struct disappearing_link *curr_dl;
size_t index;
struct disappearing_link * new_dl;
DCL_LOCK_STATE;
LOCK();
GC_ASSERT(obj != NULL && GC_base_C(obj) == obj);
if (dl_hashtbl -> log_size == -1
|| dl_hashtbl -> entries > ((word)1 << dl_hashtbl -> log_size)) {
GC_grow_table((struct hash_chain_entry ***)&dl_hashtbl -> head,
&dl_hashtbl -> log_size);
GC_COND_LOG_PRINTF("Grew %s table to %u entries\n", tbl_log_name,
1 << (unsigned)dl_hashtbl -> log_size);
}
index = HASH2(link, dl_hashtbl -> log_size);
for (curr_dl = dl_hashtbl -> head[index]; curr_dl != 0;
curr_dl = dl_next(curr_dl)) {
if (curr_dl -> dl_hidden_link == GC_HIDE_POINTER(link)) {
curr_dl -> dl_hidden_obj = GC_HIDE_POINTER(obj);
UNLOCK();
return GC_DUPLICATE;
}
}
new_dl = (struct disappearing_link *)
GC_INTERNAL_MALLOC(sizeof(struct disappearing_link),NORMAL);
if (0 == new_dl) {
GC_oom_func oom_fn = GC_oom_fn;
UNLOCK();
new_dl = (struct disappearing_link *)
(*oom_fn)(sizeof(struct disappearing_link));
if (0 == new_dl) {
return GC_NO_MEMORY;
}
/* It's not likely we'll make it here, but ... */
LOCK();
/* Recalculate index since the table may grow. */
index = HASH2(link, dl_hashtbl -> log_size);
/* Check again that our disappearing link not in the table. */
for (curr_dl = dl_hashtbl -> head[index]; curr_dl != 0;
curr_dl = dl_next(curr_dl)) {
if (curr_dl -> dl_hidden_link == GC_HIDE_POINTER(link)) {
curr_dl -> dl_hidden_obj = GC_HIDE_POINTER(obj);
UNLOCK();
# ifndef DBG_HDRS_ALL
/* Free unused new_dl returned by GC_oom_fn() */
GC_free((void *)new_dl);
# endif
return GC_DUPLICATE;
}
}
}
new_dl -> dl_hidden_obj = GC_HIDE_POINTER(obj);
new_dl -> dl_hidden_link = GC_HIDE_POINTER(link);
dl_set_next(new_dl, dl_hashtbl -> head[index]);
dl_hashtbl -> head[index] = new_dl;
dl_hashtbl -> entries++;
UNLOCK();
return GC_SUCCESS;
}
