Mysql源码学习——没那么简单的Hash(9)

            {                       /* Key will not move */

                if (!(flag & LOWFIND))

                {

                    if (flag & HIGHFIND)

                    {

                        flag=LOWFIND | HIGHFIND;

                        /* key shall be moved to the current empty position */

                        gpos=empty;

                        ptr_to_rec=pos->data;

                        empty=pos;              /* This place is now free */

                    }

                    else

                    {

                        flag=LOWFIND | LOWUSED;     /* key isn't changed */

                        gpos=pos;

                        ptr_to_rec=pos->data;

                    }

                }

                else

                {