"Merlin Moncure" <mmoncure@gmail.com> writes:
> two questions: do we need both a shared and unshared variant of
> advisory_unlock (im guessing no)?
Yes, because it's possible to hold both shared and exclusive lock
concurrently, so you have to say which you're releasing.
> also, are we exposing the mode in
> the int4/int4 signature or are all advisory locks assumed to be
> exclusive (if yes, which int4 is the lockmode).
Huh?
regards, tom lane