void
ipc_hash_delete(
ipc_space_t space,
ipc_object_t obj,
mach_port_name_t name,
ipc_entry_t entry)
{
mach_port_index_t index;
index = MACH_PORT_INDEX(name);
if ((index < space->is_table_size) &&
(entry == &space->is_table[index]))
ipc_hash_local_delete(space, obj, index, entry);
else {
assert(!is_fast_space(space));
ipc_hash_global_delete(space, obj, name,
(ipc_tree_entry_t) entry);
}
}
void
ipc_space_destroy(
ipc_space_t space)
{
ipc_tree_entry_t tentry;
ipc_entry_t table;
ipc_entry_num_t size;
mach_port_index_t index;
boolean_t active;
assert(space != IS_NULL);
is_write_lock(space);
active = space->is_active;
space->is_active = FALSE;
is_write_unlock(space);
if (!active)
return;
/*
* If somebody is trying to grow the table,
* we must wait until they finish and figure
* out the space died.
*/
is_read_lock(space);
while (space->is_growing) {
assert_wait((event_t) space, FALSE);
is_read_unlock(space);
thread_block((void (*)(void)) 0);
is_read_lock(space);
}
is_read_unlock(space);
/*
* Now we can futz with it without having it locked.
*/
table = space->is_table;
size = space->is_table_size;
for (index = 0; index < size; index++) {
ipc_entry_t entry = &table[index];
mach_port_type_t type = IE_BITS_TYPE(entry->ie_bits);
if (type != MACH_PORT_TYPE_NONE) {
mach_port_t name =
MACH_PORT_MAKEB(index, entry->ie_bits);
ipc_right_clean(space, name, entry);
}
}
it_entries_free(space->is_table_next-1, table);
for (tentry = ipc_splay_traverse_start(&space->is_tree);
tentry != ITE_NULL;
tentry = ipc_splay_traverse_next(&space->is_tree, TRUE)) {
mach_port_type_t type = IE_BITS_TYPE(tentry->ite_bits);
mach_port_t name = tentry->ite_name;
assert(type != MACH_PORT_TYPE_NONE);
/* use object before ipc_right_clean releases ref */
if (type == MACH_PORT_TYPE_SEND)
ipc_hash_global_delete(space, tentry->ite_object,
name, tentry);
ipc_right_clean(space, name, &tentry->ite_entry);
}
ipc_splay_traverse_finish(&space->is_tree);
/*
* Because the space is now dead,
* we must release the "active" reference for it.
* Our caller still has his reference.
*/
is_release(space);
}
