Function ttydisc_getc_poll

components/lwp/terminal/freebsd/tty_ttydisc.c:1466–1479

}

size_t ttydisc_getc_poll(struct lwp_tty *tp)
{
    tty_assert_locked(tp);

    if (tp->t_flags & TF_STOPPED)
        return 0;

#if USING_BSD_HOOK
    if (ttyhook_hashook(tp, getc_poll))
        return ttyhook_getc_poll(tp);
#endif

    return ttyoutq_bytesused(&tp->t_outq);
}