Method init

sql/sql_queue.h:31–36

  Queue() { m_queue.root= 0; }
  ~Queue() { delete_queue(&m_queue); }
  int init(uint max_elements, bool max_at_top, qsort_cmp2 compare,
           Param *param= 0)
  {
    return init_queue(&m_queue, max_elements, 0, max_at_top,
                      compare, (void *)param, 0, 0);
  }

  size_t elements() const { return m_queue.elements; }
  bool is_inited() const { return is_queue_inited(&m_queue); }