Re: Changeset Extraction v7.9.1

On Fri, Mar 7, 2014 at 7:44 AM, Andres Freund <andres(at)2ndquadrant(dot)com> wrote:
> I've attached a new version of the walsender patch. It's been rebased
> ontop of Heikki's latest commit to walsender.c. I've changed a fair bit
> of stuff:
> * The sleeptime is now computed to sleep until we either need to send a
> keepalive or kill ourselves, as Heikki sugggested.
> * Sleep time computation, sending pings, checking timeouts is now done
> in separate functions.
> * Comment and codestyle improvements.
>
> Although they are shorter and simpler now, I have not managed to unify
> the three loops however. They seem to be too different to unify them
> inside one. I tried a common function with an 'wait_for' bitmask
> argument, but that turned out to be fairly illegible. The checks in
> WalSndWaitForWal() and WalSndLoop() just seem to be too different.
>
> I'd be grateful if you (or somebody else!) could have a quick look at
> body of the loops in WalSndWriteData(), WalSndWaitForWal() and
> WalSndLoop(). Maybe I am just staring at it the wrong way.

I've committed this patch now with a few further tweaks, leaving this
issue unaddressed. It may well be something that needs improvement,
but I don't think it's a big enough issue to justify holding back a
commit.

--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company