obtaining row locking information

Hi,

With a help from Bruce, I wrote a small function which returns row
locking information(see attached file if you are interested). Here is
a sample result:

test=# select * from pgrowlocks('t1');
locked_row | lock_type | locker | multi
------------+-----------+--------+-------
(0,1) | Shared | 1 | t
(0,3) | Exclusive | 575 | f
(2 rows)

I think it will be more usefull if actual xids are shown in the case
"locker" is a multixid. It seems GetMultiXactIdMembers() does the
job. Unfortunately that is a static funtcion, however. Is there any
chance GetMultiXactIdMembers() becomes public funtion?
--
Tatsuo Ishii