Function port_select

src/iofunc.c:687–733

}

static int port_select(hamlib_port_t *p,
                       int n,
                       fd_set *readfds,
                       fd_set *writefds,
                       fd_set *exceptfds,
                       struct timeval *timeout,
                       int direct)
{
#if 1

    /* select does not work very well with writefds/exceptfds
     * So let's pretend there's none of them
     */
    if (exceptfds)
    {
        FD_ZERO(exceptfds);
    }

    if (writefds)
    {
        FD_ZERO(writefds);
    }

    writefds = NULL;
    exceptfds = NULL;
#endif

    /*
     * Since WIN32 does its special serial select, we have
     * to catch the microHam case to do just "select".
     * Note that we always have RIG_PORT_SERIAL in the
     * microHam case.
     */
    if (direct && is_uh_radio_fd(p->fd))
    {
        return select(n, readfds, writefds, exceptfds, timeout);
    }

    if (direct && p->type.rig == RIG_PORT_SERIAL)
    {
        return win32_serial_select(n, readfds, writefds, exceptfds, timeout);
    }
    else
    {
        return select(n, readfds, writefds, exceptfds, timeout);
    }
}

static int port_wait_for_data_direct(hamlib_port_t *p)
{