[Catalyst] Hangs in RenderView in "end"

[Gunnar Strand]

Gordon Yeong skrev:
> hi there
>
>  I am facing almost the same issue in that even clicking the "stop" 
> button on firefox would see no difference in the debugging terminal or 
> have a response from the webpage.
> When i have safari accesssing the same page, i can submit without a 
> problem and the server doesn't hang.
>
>  Any thoughts?
>
> thanks
>
> gordon
I turned on debugging in the local TT.pm in myApp as you describe below. 
I accessed the page on the application's server with Firefox only. 
Didn't try any other browser.

In my case, the request was aborted and the server returned to normal 
after I clicked "Stop" in Firefox. So it only hung until then. I guess 
you can try to press Ctrl-D in the terminal window to get it to continue 
in case the server is waiting for input, but I never tried that (didn't 
think of it). At least you would know if that is the problem.

I also tried running the server under a debugger (perl -d:ptkdb 
script/myapp_server.pl), but wasn't really getting me anywhere since I 
know too little about Catalyst/TT internals.

KR,
Gunnar
>
> 2009/7/8 Gordon Yeong <anexiole at gmail.com <mailto:anexiole at gmail.com>>
>
>
>     hi there
>      
>     I think i am facing the same fault.
>      hmmm... When you mention TT.pm, do you mean the local TT.pm found in
>     myApp/View/TT.pm or is it the TT.pm belonging to the Template
>     Toolkit package?
>
>     thanks
>
>     Regards,
>     Gordon Yeong
>
>
>     2009/7/3 Gunnar Strand <gunnarstrand at yahoo.com
>     <mailto:gunnarstrand at yahoo.com>>
>
>         I found the problem. Turning on debugging for TT (DEBUG =>
>         DEBUG_ALL) in TT.pm showed that it hangs on the [% USE CGI %]
>         directive. Apparently
>
>         [% USE CGI('-no_debug') %]
>
>         is needed. Got it from here:
>
>         https://bugzilla.mozilla.org/show_bug.cgi?id=137589
>
>         Seems CGI thinks that it is begin run from command line and
>         prompts for data.
>
>         KR,
>         Gunnar
>         ------------------------------------------------------------------------
>         *From:* Gunnar Strand <gunnarstrand at yahoo.com
>         <mailto:gunnarstrand at yahoo.com>>
>         *To:* The elegant MVC web framework
>         <catalyst at lists.scsys.co.uk <mailto:catalyst at lists.scsys.co.uk>>
>         *Sent:* Monday, June 29, 2009 6:39:41 AM
>         *Subject:* Re: [Catalyst] Hangs in RenderView in "end"
>
>         >> Is there any way of running the server in a debugger or to
>         turn tracing on? Can I send a signal to it to get it to >dump
>         a stack trace somehow? Any attempt I've made so far just
>         results in nothing or segmentation faults.
>         >
>         >[...]
>         >
>         >I don't understand why you're seeing segfaults. What version
>         of Catalyst are you using, what is your perl -V, and do you
>         have the latest version of Variable::Magic installed? Also, if
>         you could attach gdb and get the catalyst process to segfault,
>         then a backtrace from c land could be useful.
>
>         The debugger works now(!). I've always had problems with it
>         but hadn't tried it for a while. Maybe a library got updated.
>
>         Thanks for the tips!
>
>         KR,
>         Gunnar
>
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