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From Ævar Arnfjörð Bjarmason <ava...@gmail.com>
Subject Re: apache2 + mod_perl + Catalyst + Session = Segmentation fault
Date Tue, 13 Nov 2012 14:57:21 GMT
On Tue, Nov 13, 2012 at 3:48 PM, demerphq <demerphq@gmail.com> wrote:
> On 13 November 2012 15:23, Ævar Arnfjörð Bjarmason <avarab@gmail.com> wrote:
>> On Sat, Sep 29, 2012 at 1:08 PM, Stefan Profanter
>> <catalyst@s.profanter.me> wrote:
>>>> >
>>>> > Looks like you are using Storable to stream out cookies?  Looks like
>>>> > something in there is causing Storable to puke.  I see things like
>>>> > array_call, store_blessed, store_hash... So I'm guessing your passing
>>>> > Storable some kind of object?  Does it have any recursive parts?
>>>> >
>>>> > I googled "perl storable seg fault" and it looks like people have
>>>> > gotten Storable to seg fault before.  I'm not sure if the stack trace
>>>> > is reading objects or writing them.  Maybe you can glean from other's
>>>> > what makes Storable segfault.
>>>> >
>>>> > First figure out if its reading or writing that causes the problem,
>>>> > then try to figure out what part of the object is so upsetting.
>>>> >
>>>> >> 3873            return newSVpv(mbase, MBUF_SIZE());
>>>> >
>>>> >
>>>> > Hum... any chance that is really really big?
>>>
>>> Yes, you were right.
>>> I stored a DBIX::ResultSet->single Object in session and it seems this
>>> caused the SegFault. Now I stored only the ID instead of whole object and it
>>> works.
>>>
>>>>
>>>> Maybe look at Sereal as an alternative to Storable.
>>>>
>>>> https://github.com/Sereal/Sereal/
>>>> http://search.cpan.org/~smueller/Sereal-Decoder/lib/Sereal/Decoder.pm
>>>> http://search.cpan.org/~smueller/Sereal-Encoder/lib/Sereal/Encoder.pm
>>>>
>>>
>>> This seems interesting! Do you know by chance how Catalyst::Plugin::Session
>>> can be set to use Seareal instead of Storable?
>>
>> I don't have experience with that Catalyst plugin but for e.g.
>> Apache::Session we've been using Data::FlexSerializer to migrate away
>> from Sereal.
>
> He meant "from Storable (to Sereal)"

Yes, sorry about that brainfart :)

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