unwatch_fd
(void)unwatch_fd(manager, fd, SELECT_POKE_READ);
(void)unwatch_fd(manager, fd, SELECT_POKE_WRITE);
(void)unwatch_fd(manager, fd, SELECT_POKE_READ);
(void)unwatch_fd(manager, fd, SELECT_POKE_WRITE);
(void)unwatch_fd(manager, fd, SELECT_POKE_READ);
(void)unwatch_fd(manager, fd, SELECT_POKE_WRITE);
(void)unwatch_fd(manager, fd, SELECT_POKE_READ);
(void)unwatch_fd(manager, fd, SELECT_POKE_WRITE);