Function ff_poll_interrupt

libavformat/network.c:156–178

}

static int ff_poll_interrupt(struct pollfd *p, nfds_t nfds, int timeout,
                             AVIOInterruptCB *cb)
{
    int runs = timeout / POLLING_TIME;
    int ret = 0;

    do {
        if (ff_check_interrupt(cb))
            return AVERROR_EXIT;
        ret = poll(p, nfds, POLLING_TIME);
        if (ret != 0) {
            if (ret < 0)
                ret = ff_neterrno();
            if (ret == AVERROR(EINTR))
                continue;
            break;
        }
    } while (timeout <= 0 || runs-- > 0);

    if (!ret)
        return AVERROR(ETIMEDOUT);
    return ret;
}

int ff_socket(int af, int type, int proto, void *logctx)
{