Function h2_iq_shift

modules/http2/h2_util.c:433–446

int h2_iq_shift(h2_iqueue *q)
{
    int sid;

    if (q->nelts <= 0) {
        return 0;
    }

    sid = q->elts[q->head];
    q->head = (q->head + 1) % q->nalloc;
    q->nelts--;

    return sid;
}

size_t h2_iq_mshift(h2_iqueue *q, int *pint, size_t max)
{