Loading mysys/hash.c +19 −0 Original line number Diff line number Diff line Loading @@ -570,6 +570,25 @@ my_bool hash_update(HASH *hash,byte *record,byte *old_key,uint old_key_length) previous->next=pos->next; /* unlink pos */ /* Move data to correct position */ if (new_index == empty) { /* At this point record is unlinked from the old chain, thus it holds random position. By the chance this position is equal to position for the first element in the new chain. That means updated record is the only record in the new chain. */ if (empty != idx) { /* Record was moved while unlinking it from the old chain. Copy data to a new position. */ data[empty]= org_link; } data[empty].next= NO_RECORD; DBUG_RETURN(0); } pos=data+new_index; new_pos_index=hash_rec_mask(hash,pos,blength,records); if (new_index != new_pos_index) Loading Loading
mysys/hash.c +19 −0 Original line number Diff line number Diff line Loading @@ -570,6 +570,25 @@ my_bool hash_update(HASH *hash,byte *record,byte *old_key,uint old_key_length) previous->next=pos->next; /* unlink pos */ /* Move data to correct position */ if (new_index == empty) { /* At this point record is unlinked from the old chain, thus it holds random position. By the chance this position is equal to position for the first element in the new chain. That means updated record is the only record in the new chain. */ if (empty != idx) { /* Record was moved while unlinking it from the old chain. Copy data to a new position. */ data[empty]= org_link; } data[empty].next= NO_RECORD; DBUG_RETURN(0); } pos=data+new_index; new_pos_index=hash_rec_mask(hash,pos,blength,records); if (new_index != new_pos_index) Loading
