On Mon, Nov 28, 2016 at 9:20 AM, Thomas Munro
<thomas.munro@enterprisedb.com> wrote:
> It would work, but I suppose you might call it overkill. If they were
> cooperating to build the bitmap in parallel then a barrier might look
> more tempting, because then they'd all be waiting for each other to
> agree that they've all finished doing that and are ready to scan.
> When they're all just waiting for one guy to flip a single bit, then
> it's debatable whether a barrier is any simpler than a condition
> variable + a spinlock + a bit!
+1
--
Regards,
Dilip Kumar
EnterpriseDB: http://www.enterprisedb.com