[Psi-Devel] Sending GnuPG-encrypted (chat-) message makes Psi hang/block for ~2 seconds

[Andreas Ntaflos]

On Monday 08 October 2007 20:27:47 Justin Karneges wrote:
> On Monday 08 October 2007 10:53 am, Andreas Ntaflos wrote:
> > Hello devs, list,
> >
> > I finally get around to report this somewhat odd behaviour. Composing
> > a chat or regular message that should be encrypted when sent makes Psi
> > block for about two seconds; meaning it is unresponsive for two
> > seconds, no input or clicking possible, no redraws taking place. It
> > basically hangs until it gets the message out of the door.
>
> We use QProcess to launch the 'gpg' executable, and this should be
> asynchronous.  The rest of QCA and Psi is also asynchronous with respect to
> these operations.  My best guess is that you've found a bug in Qt, and that
> some part of the QProcess launching and/or usage is actually not
> asynchronous.  I've noticed a similar effect when clicking URLs in Psi:
> freezing while launching the browser with QProcess, so I'm not entirely
> surprised by this report.  However, I've never seen it happen with gpg.
>
> It could be that this is a bug in Qt that only affects you, or perhaps it
> is a bug in Qt that affects everyone but you have an unusually long gpg
> startup time.  Getting to the bottom of this may take some work.
>
> Attached is a simple patch to display some extra debug information.  Run
> Psi from the console, and tell me if there is a 2-second gap between both
> printfs.

Hi Justin, 

sorry for the long delay. I just got around to test the problem with your 
patch compiled in, but the delay is always between to "about to call 
start"-"start called" pairs, and never between an "about to call start" 
and "start called" message. I shall attach the console output and add some 
remarks so you can see when the message is sent and Psi blocks, and when Psi 
unblocks again.

Is there anything else I can do to test this? Should I try upgrading to GnuPG 
2.0.7 (currently using 1.4.6)?

Thanks and regards, 

Andreas
-- 
Andreas "daff" Ntaflos
Vienna, Austria

GPG Fingerprint: 6234 2E8E 5C81 C6CB E5EC  7E65 397C E2A8 090C A9B4
-------------- next part --------------
--- Now pressing enter to send GPG-encrypted message

about to call start
start called
about to call start
start called

--- Psi blocks

about to call start
start called

--- Psi unblocks and sent message is displayed in chat window
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