gst_poll_fd_ctl_read_unlocked  833 gst/gstpoll.c    ret = gst_poll_fd_ctl_read_unlocked (set, fd, active);
gst_poll_fd_ctl_read_unlocked 1403 gst/gstpoll.c      gst_poll_fd_ctl_read_unlocked (set, &set->control_read_fd, controllable);