ff_poll_interrupt  233 libavformat/network.c     ret = ff_poll_interrupt(&lp, 1, timeout, &h->interrupt_callback);
ff_poll_interrupt  278 libavformat/network.c             ret = ff_poll_interrupt(&p, 1, timeout, &h->interrupt_callback);
ff_poll_interrupt  461 libavformat/network.c         last_err = ff_poll_interrupt(pfd, nb_attempts,