pthread_setcancelstate  469 libavformat/udp.c     pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &old_cancelstate);
pthread_setcancelstate  485 libavformat/udp.c         pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, &old_cancelstate);
pthread_setcancelstate  487 libavformat/udp.c         pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &old_cancelstate);