On Thu, Dec 1, 2022 at 3:03 PM Masahiko Sawada <
sawada.mshk@gmail.com> wrote:
>
> On Thu, Dec 1, 2022 at 4:00 PM John Naylor <
john.naylor@enterprisedb.com> wrote:
> >
> > The bigger question in my mind is: Why is there an atomic variable in backend-local memory?
>
> Because I use the same radix_tree and radix_tree_control structs for
> non-parallel and parallel vacuum. Therefore, radix_tree_control is
> allocated in DSM for parallel-vacuum cases or in backend-local memory
> for non-parallel vacuum cases.
Ok, that could be yet another reason to compile local- and shared-memory functionality separately, but now I'm wondering why there are atomic variables at all, since there isn't yet any locking support.
--
John Naylor
EDB:
http://www.enterprisedb.com
