Re: [Catalyst] Hangs in RenderView in end
For what it's worth, I do my development under MacOS X 10.5 (currently 10.5.7) and use FF 3.0.x (currently 3.0.11) as my primary browser for development and haven't run into any problems. I'm up-to-date on all the Catalyst packages. I normally run the built-in server with '-r -d' but deploy on a Debian system under Apache2 (also no problems). I also use Mason to render pages, not TT. I also don't use CGI.pm. I'd hope that you're not letting real users run against the built-in development server. And while it's a pain that the built-in server is hanging, that doesn't mean that your app under a deployment server would also hang. I gave up on FF 3.5 pretty quickly; I was having some Javascript and Firebug glitches and when it wouldn't show me the source to the page it was rendering I decided to try again later after 3.5.1 is out. I'm saying this just to say that Catalyst can work under MacOS X. Perhaps there's some combination of packages or MacOS X updates or the like which brings out this particular problem, but it's not the case that Catalyst is 100% having these issues under Mac OS X. kakimoto and Gordon, you did catch the earlier bit from Gunnar that using CGI.pm with debugging turned on was the culprit for him, didn't you? Are you using CGI.pm in your app or templates? - john romkey http://www.romkey.com/ ___ List: Catalyst@lists.scsys.co.uk Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/ Dev site: http://dev.catalyst.perl.org/
Re: [Catalyst] Hangs in RenderView in end
2009/7/16 John Romkey rom...@apocalypse.org For what it's worth, I do my development under MacOS X 10.5 (currently 10.5.7) and use FF 3.0.x (currently 3.0.11) as my primary browser for development and haven't run into any problems. I'm up-to-date on all the Catalyst packages. I normally run the built-in server with '-r -d' but deploy on a Debian system under Apache2 (also no problems). Hi, John,. I believe K. akimoto was developing on an Ubuntu box and accessed his application for testing with a Firefox 3/3.5 browser on Mac OS X for testing. kakimoto and Gordon, you did catch the earlier bit from Gunnar that using CGI.pm with debugging turned on was the culprit for him, didn't you? Are you using CGI.pm in your app or templates? - john romkey http://www.romkey.com/ Yes, we did discuss that and I checked the codes with no sight of CGI.pm (at least in the eyes of fgrep -iRn CGI projects/myApp I do have something to announce (and K. akimoto's tried this too). It's that he was running his app with scripts/myapp_server.pl - that caused the problem. I read up on the new book on Catalyst (woo hoo!) and ran it with the -k flag to keep connections alive (ie. scripts/myapp_server.pl -k) and that seem to be stable (ie. Firefox 3/3.5 on Mac OS X was not hanging or taking his server down). Interesting but I am not entirely sure why Firefox 3/3.5 acts this way on Mac OS X. ___ List: Catalyst@lists.scsys.co.uk Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/ Dev site: http://dev.catalyst.perl.org/
Re: [Catalyst] Hangs in RenderView in end
hi, gents:) any ideas? I have tried firefox 3.0 and 3.5 on my mac os X and it causes myapp_server.pl to hang (ie. cause the CPU server to go 100%). Running an strace just shows me write(6, =\http://www.myexample.com.;..., 2715) = -1 EAGAIN (Resource temporarily unavailable) write(6, =\http://www.myexample.;..., 2715) = -1 EAGAIN (Resource temporarily unavailable) write(6, =\http://www.myexample.;..., 2715) = -1 EAGAIN (Resource temporarily unavailable) write(6, =\http://www.myexample.;..., 2715) = -1 EAGAIN (Resource temporarily unavailable) write(6, =\http://www.myexample.;..., 2715) = -1 EAGAIN (Resource temporarily unavailable) write(6, =\http://www.myexample.;..., 2715) = -1 EAGAIN (Resource temporarily unavailable) write(6, =\http://www.myexample.;..., 2715) = -1 EAGAIN (Resource temporarily unavailable) write(6, =\http://www.myexample.;..., 2715) = -1 EAGAIN (Resource temporarily unavailable) write(6, =\http://www.myexample.;..., 2715) = -1 EAGAIN (Resource temporarily unavailable) 2009/7/13 Gordon Yeong anexi...@gmail.com I believe that firefox on mac OS X has a bug. I have tested with other browsers on both Mac Os X and windows platforms without any problems. Here's what I used: Mac Os X 10.5 1. Safari Windows XP 1. internet explorer 2. firefox 3 doesn't seem to have any issues. Any suggestions of how to prove this but such that I can perhaps log a call with the folks on mozilla? thanks:D Gordon ___ List: Catalyst@lists.scsys.co.uk Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/ Dev site: http://dev.catalyst.perl.org/
Re: [Catalyst] Hangs in RenderView in end
On 15 Jul 2009, at 09:31, Gordon Yeong wrote: hi, gents:) any ideas? I have tried firefox 3.0 and 3.5 on my mac os X and it causes myapp_server.pl to hang (ie. cause the CPU server to go 100%). Running an strace just shows me write(6, =\http://www.myexample.com.;..., 2715) = -1 EAGAIN (Resource temporarily unavailable) write(6, =\http://www.myexample.;..., 2715) = -1 EAGAIN (Resource temporarily unavailable) write(6, =\http://www.myexample.;..., 2715) = -1 EAGAIN (Resource temporarily unavailable) write(6, =\http://www.myexample.;..., 2715) = -1 EAGAIN (Resource temporarily unavailable) write(6, =\http://www.myexample.;..., 2715) = -1 EAGAIN (Resource temporarily unavailable) write(6, =\http://www.myexample.;..., 2715) = -1 EAGAIN (Resource temporarily unavailable) write(6, =\http://www.myexample.;..., 2715) = -1 EAGAIN (Resource temporarily unavailable) write(6, =\http://www.myexample.;..., 2715) = -1 EAGAIN (Resource temporarily unavailable) write(6, =\http://www.myexample.;..., 2715) = -1 EAGAIN (Resource temporarily unavailable) Hmm. I don't know why this could happen. Catalyst appears to be doing the correct thing here - from the Darwin reference man pages: [EAGAIN] The file is marked for non-blocking I/O, and no data could be written immediately. so I guess firefox has filled up the socket buffer in some way and isn't reading stuff, although I don't understand why Darwin is signaling Catalyst that the socket is available for writing, and then returning EAGAIN when we try to write :/ Can you extract the section of the trace just before it goes into the EAGAIN loop and paste that? Which specific version / patch level of osX is this? Does using the Prefork engine work, or does it exhibit the same behavior? Cheers t0m ___ List: Catalyst@lists.scsys.co.uk Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/ Dev site: http://dev.catalyst.perl.org/
Re: [Catalyst] Hangs in RenderView in end
hello, t0m,
Good morning.
1)Does using the Prefork engine work, or does it exhibit the same behavior?
I am sorry as I can't tell you. This is because I have not tried it yet.
Been developing and noticed this strange problem. I m pretty stuck
halfway now with a Catalyst application that works fine sometimes on
firefox MAC Os X but works fine always on any non-firefox 3.5 on mac os X.
Good news is that the windows people running IE, Safari and FF would be
able to use the application without a problem whilst us Mac folks using
Firefox 3/3.5 will not be able to (and also hang my server) :(
2) I have tried this on Mac OS X Leopard and Tiger (both running
Firefox 3/3.5) . Problem comes up sometimes only. This is very sporadic
because I tried the replicate the problem at another interval and
Firefox was able to handle it.
Tried it the next hour or evening and it jams up. Then, after restarted
the catalyst application process, I use safari to perform the same tasks
and no problems are observed.
3) Here is an extract of the strace. Thank you :)
accept(5, {sa_family=AF_INET, sin_port=htons(50067),
sin_addr=inet_addr(123.243.50.59)}, [10647353952623919120]) = 6
ioctl(6, SNDCTL_TMR_TIMEBASE or TCGETS, 0x7fff4c95dea0) = -1 EINVAL
(Invalid argument)
lseek(6, 0, SEEK_CUR) = -1 ESPIPE (Illegal seek)
ioctl(6, SNDCTL_TMR_TIMEBASE or TCGETS, 0x7fff4c95dea0) = -1 EINVAL
(Invalid argument)
lseek(6, 0, SEEK_CUR) = -1 ESPIPE (Illegal seek)
fcntl(6, F_SETFD, FD_CLOEXEC) = 0 fcntl(6, F_GETFL)
= 0x2 (flags O_RDWR)read(6, GET / HTTP/1.1\r\nHost:
www.myApp..., 65536) = 514 getpeername(6, {sa_family=AF_INET,
sin_port=htons(50067), sin_addr=inet_addr(123.243.50.59)},
[6788732235563401232]) = 0getsockname(6, {sa_family=AF_INET,
sin_port=htons(3000), sin_addr=inet_addr(125.214.64.65)},
[6788732235563401232]) = 0
open(/etc/hosts, O_RDONLY|0x8 /* O_??? */) = 9fcntl(9, F_GETFD)
= 0
fcntl(9, F_SETFD, FD_CLOEXEC) = 0 fstat(9,
{st_mode=S_IFREG|0644, st_size=170, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
= 0x2b0f67b6b000read(9, 127.0.0.1 localhost.localdomain ..., 4096) = 170
close(9)= 0 munmap(0x2b0f67b6b000,
4096)= 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0rt_sigaction(SIGCHLD,
{SIG_DFL}, {SIG_IGN}, 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0rt_sigprocmask(SIG_BLOCK,
[CHLD], [], 8) = 0rt_sigaction(SIGCHLD, {SIG_DFL}, {SIG_DFL}, 8) =
0rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
stat(/etc/localtime, {st_mode=S_IFREG|0644, st_size=2183, ...}) =
0fcntl(6, F_GETFL) = 0x2 (flags O_RDWR)
fcntl(6, F_SETFL, O_RDWR|O_NONBLOCK)= 0 alarm(10)
= 0
fcntl(3, F_SETLKW, {type=F_WRLCK, whence=SEEK_SET, start=3932160,
len=65536}) = 0
alarm(0)= 10 fcntl(3, F_SETLKW,
{type=F_UNLCK, whence=SEEK_SET, start=3932160, len=65536}) = 0
alarm(10) = 0 fcntl(3, F_SETLKW,
{type=F_WRLCK, whence=SEEK_SET, start=2359296, len=65536}) = 0alarm(0)
= 10 fcntl(3, F_SETLKW, {type=F_UNLCK,
whence=SEEK_SET, start=2359296, len=65536}) =
0stat(/home/kakimoto/projects/myApp/root/src/index.tt2,
{st_mode=S_IFREG|0755, st_size=248, ...}) =
0stat(/home/kakimoto/projects/myApp/root/src/config/main, 0x70fcc0) =
-1 ENOENT (No such file or
directory)stat(/home/kakimoto/projects/myApp/root/lib/config/main,
{st_mode=S_IFREG|0755, st_size=803, ...}) = 0
stat(/home/kakimoto/projects/myApp/root/src/config/col, 0x70fcc0) = -1
ENOENT (No such file or directory)
stat(/home/kakimoto/projects/myApp/root/lib/config/col,
{st_mode=S_IFREG|0755, st_size=449, ...}) = 0
stat(/home/kakimoto/projects/myApp/root/src/config/url, 0x70fcc0) = -1
ENOENT (No such file or direc
tory)
stat(/home/kakimoto/projects/myApp/root/lib/config/url,
{st_mode=S_IFREG|0755, st_size=139, ...}) =
0
stat(/home/kakimoto/projects/myApp/root/src/menu.tt2,
{st_mode=S_IFREG|0755, st_size=502, ...}) = 0
write(8, SELECT me.id, me.password, me.fi..., 276) = 276
rt_sigprocmask(SIG_BLOCK, [PIPE], [], 8) = 0
sendto(7, B\0\0\0!\0dbdpg_p18331_2\0\0\0\0\1\0\0\0\0013\0\1..., 56, 0,
NULL, 0) = 56rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
poll([{fd=7, events=POLLIN|POLLERR, revents=POLLIN}], 1, -1) = 1
recvfrom(7,
2\0\0\0\4T\0\0\1\320\0\20id\0\0\0cN\0\1\0\0\0\27\0\4\377..., 16384, 0,
NULL, NULL) = 745
stat(/home/kakimoto/projects/myApp/root/src/listings/search.tt2,
{st_mode=S_IFREG|0755, st_size=1861
, ...}) = 0
open(/home/kakimoto/projects/myApp/root/src/listings/search.tt2,
O_RDONLY) = 9
ioctl(9, SNDCTL_TMR_TIMEBASE or TCGETS, 0x7fff4c95ecf0) = -1 ENOTTY
(Inappropriate ioctl for device)
lseek(9, 0, SEEK_CUR) = 0
fstat(9, {st_mode=S_IFREG|0755, st_size=1861, ...}) = 0
fcntl(9, F_SETFD, FD_CLOEXEC) = 0fstat(9,
{st_mode=S_IFREG|0755,
Re: [Catalyst] Hangs in RenderView in end
hey K thanks for including the error logs for me. ___ List: Catalyst@lists.scsys.co.uk Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/ Dev site: http://dev.catalyst.perl.org/
Re: [Catalyst] Hangs in RenderView in end
hey K, try running myApp_server.pl with -k . I tried it on my mac and it works just fine! :D anyway, would be interesting to find out why FF 3/3.5 causes the problem it does on Mac. ___ List: Catalyst@lists.scsys.co.uk Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/ Dev site: http://dev.catalyst.perl.org/
Re: [Catalyst] Hangs in RenderView in end
I believe that firefox on mac OS X has a bug. I have tested with other browsers on both Mac Os X and windows platforms without any problems. Here's what I used: Mac Os X 10.5 1. Safari Windows XP 1. internet explorer 2. firefox 3 doesn't seem to have any issues. Any suggestions of how to prove this but such that I can perhaps log a call with the folks on mozilla? thanks:D Gordon 2009/7/9 Gordon Yeong anexi...@gmail.com Mod deflate was never on because i made sure apache2 was shut down. I am using myapp_server.pl and the fault occurs. Tried to replicate the problem with safari and it doesn't occur. I believe there's some hidden complication with firefox. This isn't a fastcgi/mod_deflate issue is it? Are you running both? If so, turn off mod_deflate and see if it fixes? Cheers t0m ___ List: Catalyst@lists.scsys.co.uk Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/ Dev site: http://dev.catalyst.perl.org/
Re: [Catalyst] Hangs in RenderView in end
On 9 Jul 2009, at 07:45, Gunnar Strand wrote: Here's what I wrote, and I've attached a patch for Catalyst::View::TT.pm. I'm very inexperienced using patches, so let me know if you want it in any other way. I changed the wording slightly to be a little more affirmative and applied: http://dev.catalystframework.org/svnweb/Catalyst/revision?rev=10862 Thanks very much! Cheers t0m ___ List: Catalyst@lists.scsys.co.uk Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/ Dev site: http://dev.catalyst.perl.org/
Re: [Catalyst] Hangs in RenderView in end
Tomas Doran skrev:
On 6 Jul 2009, at 05:33, Gunnar Strand wrote:
Wow, that's a fairly unexpected gotcha.
Any chance of a doc patch to make it easier for the next poor soul who
gets stuck on this?
Sure. Where would you like it?
A 'NOTES' or 'CAVEATS' section in the POD for Catalyst::View::TT is
the best place I can think of right now.
Write something and it can go somewhere else if anyone has a better idea?
Here's what I wrote, and I've attached a patch for
Catalyst::View::TT.pm. I'm very inexperienced using patches, so let me
know if you want it in any other way.
=head1 NOTES
If you are using the LCGI module inside your templates, and you
experience that the Catalyst server appears to hang while rendering
the web page, then it may be due to the debug mode of LCGI (which is
waiting for input in the terminal window). You can try turning off the
debug mode using the -no_debug option and see if that solves you
problem, eg.:
[% USE CGI('-no_debug') %]
KR,
Gunnar
Cheers
t0m
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cgi_debug.patch
Description: Binary data
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Re: [Catalyst] Hangs in RenderView in end
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 gunnarstr...@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 gunnarstr...@yahoo.com
*To:* The elegant MVC web framework catalyst@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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Re: [Catalyst] Hangs in RenderView in end
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
2009/7/8 Gordon Yeong anexi...@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 gunnarstr...@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 gunnarstr...@yahoo.com
*To:* The elegant MVC web framework catalyst@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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Re: [Catalyst] Hangs in RenderView in end
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 anexi...@gmail.com mailto:anexi...@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 gunnarstr...@yahoo.com
mailto:gunnarstr...@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 gunnarstr...@yahoo.com
mailto:gunnarstr...@yahoo.com
*To:* The elegant MVC web framework
catalyst@lists.scsys.co.uk mailto:catalyst@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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Re: [Catalyst] Hangs in RenderView in end
Gordon Yeong wrote: 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? This isn't a fastcgi/mod_deflate issue is it? Are you running both? If so, turn off mod_deflate and see if it fixes? Cheers t0m ___ List: Catalyst@lists.scsys.co.uk Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/ Dev site: http://dev.catalyst.perl.org/
Re: [Catalyst] Hangs in RenderView in end
On 6 Jul 2009, at 05:33, Gunnar Strand wrote: Wow, that's a fairly unexpected gotcha. Any chance of a doc patch to make it easier for the next poor soul who gets stuck on this? Sure. Where would you like it? A 'NOTES' or 'CAVEATS' section in the POD for Catalyst::View::TT is the best place I can think of right now. Write something and it can go somewhere else if anyone has a better idea? Cheers t0m ___ List: Catalyst@lists.scsys.co.uk Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/ Dev site: http://dev.catalyst.perl.org/
Re: [Catalyst] Hangs in RenderView in end
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 gunnarstr...@yahoo.com
To: The elegant MVC web framework catalyst@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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Re: [Catalyst] Hangs in RenderView in end
On 2 Jul 2009, at 21:33, Gunnar Strand wrote:
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.
Wow, that's a fairly unexpected gotcha.
Any chance of a doc patch to make it easier for the next poor soul
who gets stuck on this?
Cheers
t0m
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Re: [Catalyst] Hangs in RenderView in end
On 28 Jun 2009, at 07:35, Gunnar Strand wrote: [debug] Rendering template users/create_form.tt2 [info] Request took 795.658106s (0.001/s) .+---. | Action | Time | ++---+ | /users/create | 0.005603s | | /end | 795.6377s | | - Cupper::View::TT-process | 795.6356s | '+---' As you can see, end has hanged in 795 seconds, and this output was not printed until AFTER I hit Stop in Firefox. Below is the code in users/create: This shows that the template processing is going into an infinite loop. Something in users/create_form.tt2 is going mad. I'd replace it with a blank template, check that fixes the issue, then work backwards from there, re-adding chunks of code until you find the culprit. Thanks for th tip! I'll see if I can nail it down - the template structure isn't just that one file - I am using the wrapper support in TT. 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. KR, Gunnar ___ List: Catalyst@lists.scsys.co.uk Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/ Dev site: http://dev.catalyst.perl.org/ ___ List: Catalyst@lists.scsys.co.uk Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/ Dev site: http://dev.catalyst.perl.org/
Re: [Catalyst] Hangs in RenderView in end
On 28 Jun 2009, at 16:50, Gunnar Strand wrote:
Thanks for th tip! I'll see if I can nail it down - the template
structure isn't just that one file - I am using the wrapper
support in TT.
Right. I'd start by blanking the actual template, which will at least
tell you if it's the template or the wrapper, and work from there..
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.
well, I guess something like: $SIG{WINCH} = sub { Carp::cluck('here'); }
+ a SIGWINCH might be helpful.
Or just alarm(3); in your controller action - should cause an
exception (and so stack trace in debug mode) after 3s..
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.
Cheers
t0m
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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 ___ List: Catalyst@lists.scsys.co.uk Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/ Dev site: http://dev.catalyst.perl.org/ ___ List: Catalyst@lists.scsys.co.uk Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/ Dev site: http://dev.catalyst.perl.org/
