wpool:stop_sup_pool() can't fire gen_server terminate()

[boboxiaodd]

i want do something when the worker gen_server terminate,
but not fire !

wpool_process_sup.erl
use {one_for_one, 5, 60}

wpool_sup.erl
use {simple_one_for_one, 5, 60}

maybe wpool_sup use simple_one_for_one ,and can't fire terminate each process,
and wpool_process_sup also can't fire terminate