User Level Lock question - Mailing list pgsql-hackers

Is there an easy way to test the lock on a user level lock without actually
issuing the lock?

I would like to use them, but there is only a LockAcquire() and
LockRelease().. There is no LockTest()..

I guess I could do:

IF LockAcquire() == 0:   "locked" do whatever if it is locked...
ELSE:   LockRelease()   "unlocked" do whatever since it was not locked in the first place..

This just seems to be an inefficient way of doing this...

Thanks,
Lance Ellinghaus