Horton

Re: Escaping from blocked send() reprised.

Noah Misch <noah@leadboat.com>

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From: Noah Misch <noah@leadboat.com>
To: Andres Freund <andres@2ndquadrant.com>
Cc: Heikki Linnakangas <hlinnakangas@vmware.com>, Tom Lane <tgl@sss.pgh.pa.us>, Kyotaro HORIGUCHI <horiguchi.kyotaro@lab.ntt.co.jp>, robertmhaas@gmail.com, pgsql-hackers@postgresql.org
Date: 2015-01-12T00:55:33Z
Lists: pgsql-hackers 
On Mon, Jan 12, 2015 at 01:45:41AM +0100, Andres Freund wrote:
> On 2015-01-11 19:37:53 -0500, Noah Misch wrote:
> > I recommend either (a) taking no action or (b) adding a regression test
> > verifying WaitLatchOrSocket() conformance in this scenario.
> 
> Do you have a good idea how to test b) save a C function in regress.c
> that does what your test does using latches?

No, that's what I had in mind.  You could probably achieve it with a libpq
program that lets input accumulate, but that's trickier.

Commits

  1. Assert that WaitLatchOrSocket callers cannot wait only for writability.