Alvaro Herrera <alvherre@commandprompt.com> writes:
> Note that currently there's no way for a backend to know whether another
> backend is autovacuum or not. I thought about adding a flag to PGPROC,
> but eventually considered it ugly,
No, that was exactly the way I thought we'd do it. One thing to note is
that to avoid race conditions, the PGPROC entry has to be marked as
autovac from the instant it's inserted into the array --- with a
separate area I think you'd have difficulty avoiding the race condition.
regards, tom lane