GST_POLL_MODE_PSELECT  260 gst/gstpoll.c        mode = GST_POLL_MODE_PSELECT;
GST_POLL_MODE_PSELECT  266 gst/gstpoll.c      mode = GST_POLL_MODE_PSELECT;
GST_POLL_MODE_PSELECT 1219 gst/gstpoll.c        case GST_POLL_MODE_PSELECT: