Обсуждение: Deadlock

The script in ticket #55
(http://psycopg.lighthouseapp.com/projects/62710-psycopg/tickets/55)
sometimes triggers a deadlock. More rarely I've got a segfault or a
loss of sync with the server.

Killing the locked process with a SIGQUIT reveals the following stack:

Will try to investigate - but I don't have time this weekend. If
somebody wants to take a look at the issue, any help is welcome.

Thanks.

-- Daniele

On Sat, May 28, 2011 at 1:12 AM, Daniele Varrazzo
<daniele.varrazzo@gmail.com> wrote:
> The script in ticket #55
> (http://psycopg.lighthouseapp.com/projects/62710-psycopg/tickets/55)
> sometimes triggers a deadlock. More rarely I've got a segfault or a
> loss of sync with the server.

The problem should be fixed. We were processing notifies after
releasing the connection lock, together with the result process. But,
while the result is in a read-only structure, processing notifies
implies parsing the connection, possibly disrupting the communication
for other threads.

-- Daniele