Function lwp_tty_create_ext

components/lwp/terminal/tty_device.c:358–410

}

lwp_tty_t lwp_tty_create_ext(lwp_ttydevsw_t handle, void *softc,
                             rt_mutex_t custom_mtx)
{
    lwp_tty_t tp;

    tp = rt_calloc(1, sizeof(struct lwp_tty)
    #ifdef USING_BSD_SIGINFO
            + LWP_TTY_PRBUF_SIZE
    #endif
            );

    if (!tp)
        return tp;

    bsd_devsw_init(handle);

#ifdef USING_BSD_SIGINFO
    tp->t_prbufsz = LWP_TTY_PRBUF_SIZE;
#endif
    tp->t_devsw = handle;
    tp->t_devswsoftc = softc;
    tp->t_flags = handle->tsw_flags;
    tp->t_drainwait = tty_drainwait;

    tty_init_termios(tp);

    cv_init(&tp->t_inwait, "ttyin");
    cv_init(&tp->t_outwait, "ttyout");
    cv_init(&tp->t_outserwait, "ttyosr");
    cv_init(&tp->t_bgwait, "ttybg");
    cv_init(&tp->t_dcdwait, "ttydcd");

    rt_wqueue_init(&tp->t_inpoll);
    rt_wqueue_init(&tp->t_outpoll);

    /* Allow drivers to use a custom mutex to lock the TTY. */
    if (custom_mtx != NULL)
    {
        tp->t_mtx = custom_mtx;
    }
    else
    {
        tp->t_mtx = &tp->t_mtxobj;
        rt_mutex_init(&tp->t_mtxobj, "ttydev", RT_IPC_FLAG_PRIO);
    }

#ifdef USING_BSD_POLL
    knlist_init_mtx(&tp->t_inpoll.si_note, tp->t_mtx);
    knlist_init_mtx(&tp->t_outpoll.si_note, tp->t_mtx);
#endif

    return tp;
}

lwp_tty_t lwp_tty_create(lwp_ttydevsw_t handle, void *softc)
{