[Okular-devel] TextDocument Multithreading

[Jaydeep Solanki]

On Mon, Sep 23, 2013 at 3:17 AM, Albert Astals Cid <aacid at kde.org> wrote:

> El Dilluns, 23 de setembre de 2013, a les 02:05:23, Jaydeep Solanki va
> escriure:
> > On Sun, Sep 22, 2013 at 9:21 PM, Albert Astals Cid <aacid at kde.org>
> wrote:
> > > El Dissabte, 21 de setembre de 2013, a les 23:16:56, Jaydeep Solanki va
> > >
> > > escriure:
> > > > On Sat, Sep 21, 2013 at 9:25 PM, Albert Astals Cid <aacid at kde.org>
> > >
> > > wrote:
> > > > > El Dissabte, 21 de setembre de 2013, a les 14:50:50, Jaydeep
> Solanki
> > > > > va
> > > > >
> > > > > escriure:
> > > > > > Hi,
> > > > >
> > > > > Hi
> > > > >
> > > > > > @Albert,
> > > > > > Welcome back :)
> > > > >
> > > > > Thanks :-)
> > > > >
> > > > > > As you might be aware GSoC is coming to an end, I want to wrap
> > > > > > things
> > > > > > up.
> > > > > >
> > > > > > I have a few days, and I want to finish multi-threading support
> for
> > > > > > ePubs
> > > > > > before GSoC ends. I have created a patch, but it crashes
> sometimes,
> > >
> > > I'm
> > >
> > > > > > unable to find a reason to that.
> > > > >
> > > > > Where's the patch?
> > > >
> > > > Diff attached
> > > >
> > > > File to test on :
> > > > link<
> > >
> > >
> https://www.dropbox.com/s/x63kkjf8q4h4fdy/Getting%20Gold%20by%20J_C_F_J
> > >
> > > > ohnson.epub>
> > > >
> > > > > Do you have a backtrace of the crash?
> > > >
> > > > I have got two different backtraces, using the same ePub
> > > >
> > > > Backtrace 1 : http://paste.kde.org/p0b9a1e1e/
> > > >
> > > > Backtrace 2 : http://paste.kde.org/pa4e31b12/
> > >
> > > Any reason you have not installed debug symbols for Qt to get a better
> > > bracktrace (less ??)?
> >
> > Installed it.
> > still I'm not able to make any sense out of it.
> >
> > Updated backtrace :  http://paste.kde.org/pa8f27933/
>
> How are you getting the backtrace?

I use Qt Creator, when it crashes I use create full backtrace option to get
this backtrace.
Further more using gdb + terminal I get
this<http://paste.kde.org/p11fad1cf/>backtrace.

Can you mark in which thread the crash is
> happening?
>
I get an ABORT signal when TextDocumentGeneratorPrivate::createTextPage(. .
.) is called inside core/textdocumentgenerator.cpp. Now inside that 99% of
the times I get a crash on L81 (my branch).

>
> Cheers,
>   Albert
>
> >
> > > Cheers,
> > >
> > >   Albert
> > >
> > > > > What has changed
> > > > > since last time we tried to do this?
> > > >
> > > > I have noticed that it only crashes when the epub has an adequate
> amount
> > >
> > > of
> > >
> > > > images. Epubs with no images or 1 or 2 images are less likely to
> crash.
> > >
> > > The
> > >
> > > > more the images the more likely it is to crash.
> > > >
> > > > Now we don't have to guess if it will crash on this file or not.
> > > > Considering all this, I have given you an ePub that is most likely to
> > >
> > > crash
> > >
> > > > atleast once before completing a round trip (top to bottom & bottom
> to
> > > > top).
> > > >
> > > > > Cheers,
> > > > >
> > > > >   Albert
> > > > >
> > > > > > So, can we please help, me get this done.
> > > > > > It's the same bug that we once tried to fix on IRC.
> > > > > >
> > > > > > I'll be available on #okular, same time as usual.
> > > > > >
> > > > > > Cheers,
> > > > > > Jaydeep
> > > > >
> > > > > _______________________________________________
> > > > > Okular-devel mailing list
> > > > > Okular-devel at kde.org
> > > > > https://mail.kde.org/mailman/listinfo/okular-devel
> > >
> > > _______________________________________________
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> > > Okular-devel at kde.org
> > > https://mail.kde.org/mailman/listinfo/okular-devel
>
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