RE: Cygwin PostgreSQL Regression Test Problems (Revisited)

From: "Hiroshi Inoue" <Inoue(at)tpf(dot)co(dot)jp>
To: <Jason(dot)Tishler(at)dothill(dot)com>, "Tom Lane" <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: <pgsql-ports(at)postgresql(dot)org>
Subject: RE: Cygwin PostgreSQL Regression Test Problems (Revisited)
Date: 2001-03-31 01:15:08
Message-ID: EKEJJICOHDIEMGPNIFIJOEBIEAAA.Inoue@tpf.co.jp
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> -----Original Message-----
> From: Jason Tishler
>
> Tom,
>
> On Fri, Mar 30, 2001 at 09:25:47AM -0500, Jason Tishler wrote:
> > Any feedback on my patch (reattached for convenience)? I would hate to
> > see 7.1 go out the door with this issue.
>
> I believe that I have finally found the root cause to the psql hangs.
> IMO, Cygwin is functioning properly and the issue lies in the libpq's
> pqWait() use of select().
>
> The MSDN states the following for select():
>
> ..
> Summary:
> A socket will be identified in a particular set when select
> returns if:
>
> ..
>
> exceptfds:
> If processing a connect call (nonblocking), connection
> attempt failed.
> ..
>

Oh I found the same description yesterday though I've had no time
to test it. If your patch resolves *hang*, it may be the right solution
at least for cygwin port.
BTW I've never passed the pararell regression test without hang or
refusal(with your previous patch appiled) under my cygwin environ-
ment. I added one more connect() call after the refusal and passed
all regression test successfully. Hmm it may be a more preferable
solution.

regards,
Hiroshi Inoue

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