Re: [c3p0-users] Deadlock between multiple c3p0 helper threads

[Steve W. <swa...@mc...>]

Thilo,

As you gathered, this issue should be fixed as of the latest release. Thanks for the detailed deadlock report; that is very helpful. If you still see the issue with c3p0-0.9.2-pre4, do let me know.

    smiles,
       Steve

 
On Jun 20, 2012, at 10:36 PM, Thilo-Alexander Ginkel wrote:

> On Wed, Jun 20, 2012 at 6:34 PM, Thilo-Alexander Ginkel
> <th...@gi...> wrote:
>> I am currently running c3p0 (version 0.9.2-pre2-RELEASE) with
>> Hibernate 4 and mysql-connector-java 5.1.20 and the following c3p0
>> settings (on top of the defaults):
>> [...]
>> 
>> Apparently this causes three helper threads to be spawned on my
>> machine. Unfortunately, this seems to introduce a deadlock in c3p0's
>> housekeeping (note the cyclic reference in the monitor acquisition for
>> the objects 0x00007f3af06f6bb0 and 0x00007f3af0bb6f68):
> 
> Ah, just spotted
> http://sourceforge.net/tracker/index.php?func=detail&aid=3530236&group_id=25357&atid=383690.
> I'll update to -pre4 and will report back should I encounter the issue
> again.
> 
> Regards,
> Thilo
> 
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