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Posted to dev@cocoon.apache.org by Michael Melhem <mi...@fztig938.bank.dresdner.net> on 2003/02/06 17:33:07 UTC
Possible threading issues with xsltc + BCEL ???
Hi Cocooners,
Are their any other Cocoon users having Threading Issues with xsltc?
Its seems that if you have a translat being compiled at the same time by two
or more threads (instances of TraxTransformer) you will get issues because
BCEL is not (by design) threadsafe as it users static methods and
variables which seem to be overwriting each other???
Once the Translets get compiled however, such threading issues disappear.
Does anyone have expirence with this?
Regards,
Michael Melhem
Ps After locally patching org.apache.xalan.xsltc.trax.TemplatesHandlerImpl.java
with some synch code around the compile block, all seems OK.
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Re: Possible threading issues with xsltc + BCEL ???
Posted by Vadim Gritsenko <va...@verizon.net>.
Michael Melhem wrote:
>Hi Guys,
>
>Xalan guys have updated the xsltc code to resolve this issue. Will
>update the xsltc jar in Cocoon head if there are no objections.
>
>
Go ahead!
Vadim
>Regards,
>Michael
>
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Re: Possible threading issues with xsltc + BCEL ???
Posted by Michael Melhem <mi...@fztig938.bank.dresdner.net>.
Hi Guys,
Xalan guys have updated the xsltc code to resolve this issue. Will
update the xsltc jar in Cocoon head if there are no objections.
Regards,
Michael
On Fri, Feb 07, 2003 at 12:43:42PM +0100, Michael Melhem wrote:
> On Thu, Feb 06, 2003 at 04:18:55PM -0500, Vadim Gritsenko wrote:
> > Michael Melhem wrote:
> >
> > >Hi Cocooners,
> > >
> > >Are their any other Cocoon users having Threading Issues with xsltc?
> > >
> > >Its seems that if you have a translat being compiled at the same time by
> > >two or more threads (instances of TraxTransformer) you will get issues
> > >because BCEL is not (by design) threadsafe as it users static methods and
> > >variables which seem to be overwriting each other???
> > >
> > >Once the Translets get compiled however, such threading issues disappear.
> > >
> > >Does anyone have expirence with this?
> > >
> > >Regards,
> > >Michael Melhem
> > >
> > >Ps After locally patching
> > >org.apache.xalan.xsltc.trax.TemplatesHandlerImpl.java
> > >with some synch code around the compile block, all seems OK.
> > >
> > >
> Hi Vadim,
> >
> > Can you notify Xalan guys about this issue? Or may be sent'em a patch?
>
> Yep, im chasing this up will talk with the Xalan guys.
>
> Cheers,
> Michael
> >
> >
> > Vadim
> >
> >
> >
> > ---------------------------------------------------------------------
> > Please check that your question has not already been answered in the
> > FAQ before posting. <http://xml.apache.org/cocoon/faq/index.html>
> >
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> > For additional commands, e-mail: <co...@xml.apache.org>
> >
>
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Re: Possible threading issues with xsltc + BCEL ???
Posted by Michael Melhem <mi...@fztig938.bank.dresdner.net>.
Hi Guys,
Xalan guys have updated the xsltc code to resolve this issue. Will
update the xsltc jar in Cocoon head if there are no objections.
Regards,
Michael
On Fri, Feb 07, 2003 at 12:43:42PM +0100, Michael Melhem wrote:
> On Thu, Feb 06, 2003 at 04:18:55PM -0500, Vadim Gritsenko wrote:
> > Michael Melhem wrote:
> >
> > >Hi Cocooners,
> > >
> > >Are their any other Cocoon users having Threading Issues with xsltc?
> > >
> > >Its seems that if you have a translat being compiled at the same time by
> > >two or more threads (instances of TraxTransformer) you will get issues
> > >because BCEL is not (by design) threadsafe as it users static methods and
> > >variables which seem to be overwriting each other???
> > >
> > >Once the Translets get compiled however, such threading issues disappear.
> > >
> > >Does anyone have expirence with this?
> > >
> > >Regards,
> > >Michael Melhem
> > >
> > >Ps After locally patching
> > >org.apache.xalan.xsltc.trax.TemplatesHandlerImpl.java
> > >with some synch code around the compile block, all seems OK.
> > >
> > >
> Hi Vadim,
> >
> > Can you notify Xalan guys about this issue? Or may be sent'em a patch?
>
> Yep, im chasing this up will talk with the Xalan guys.
>
> Cheers,
> Michael
> >
> >
> > Vadim
> >
> >
> >
> > ---------------------------------------------------------------------
> > Please check that your question has not already been answered in the
> > FAQ before posting. <http://xml.apache.org/cocoon/faq/index.html>
> >
> > To unsubscribe, e-mail: <co...@xml.apache.org>
> > For additional commands, e-mail: <co...@xml.apache.org>
> >
>
> ---------------------------------------------------------------------
> Please check that your question has not already been answered in the
> FAQ before posting. <http://xml.apache.org/cocoon/faq/index.html>
>
> To unsubscribe, e-mail: <co...@xml.apache.org>
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Re: Possible threading issues with xsltc + BCEL ???
Posted by Michael Melhem <mi...@fztig938.bank.dresdner.net>.
On Thu, Feb 06, 2003 at 04:18:55PM -0500, Vadim Gritsenko wrote:
> Michael Melhem wrote:
>
> >Hi Cocooners,
> >
> >Are their any other Cocoon users having Threading Issues with xsltc?
> >
> >Its seems that if you have a translat being compiled at the same time by
> >two or more threads (instances of TraxTransformer) you will get issues
> >because BCEL is not (by design) threadsafe as it users static methods and
> >variables which seem to be overwriting each other???
> >
> >Once the Translets get compiled however, such threading issues disappear.
> >
> >Does anyone have expirence with this?
> >
> >Regards,
> >Michael Melhem
> >
> >Ps After locally patching
> >org.apache.xalan.xsltc.trax.TemplatesHandlerImpl.java
> >with some synch code around the compile block, all seems OK.
> >
> >
Hi Vadim,
>
> Can you notify Xalan guys about this issue? Or may be sent'em a patch?
Yep, im chasing this up will talk with the Xalan guys.
Cheers,
Michael
>
>
> Vadim
>
>
>
> ---------------------------------------------------------------------
> Please check that your question has not already been answered in the
> FAQ before posting. <http://xml.apache.org/cocoon/faq/index.html>
>
> To unsubscribe, e-mail: <co...@xml.apache.org>
> For additional commands, e-mail: <co...@xml.apache.org>
>
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Re: Possible threading issues with xsltc + BCEL ???
Posted by Michael Melhem <mi...@fztig938.bank.dresdner.net>.
On Thu, Feb 06, 2003 at 04:18:55PM -0500, Vadim Gritsenko wrote:
> Michael Melhem wrote:
>
> >Hi Cocooners,
> >
> >Are their any other Cocoon users having Threading Issues with xsltc?
> >
> >Its seems that if you have a translat being compiled at the same time by
> >two or more threads (instances of TraxTransformer) you will get issues
> >because BCEL is not (by design) threadsafe as it users static methods and
> >variables which seem to be overwriting each other???
> >
> >Once the Translets get compiled however, such threading issues disappear.
> >
> >Does anyone have expirence with this?
> >
> >Regards,
> >Michael Melhem
> >
> >Ps After locally patching
> >org.apache.xalan.xsltc.trax.TemplatesHandlerImpl.java
> >with some synch code around the compile block, all seems OK.
> >
> >
Hi Vadim,
>
> Can you notify Xalan guys about this issue? Or may be sent'em a patch?
Yep, im chasing this up will talk with the Xalan guys.
Cheers,
Michael
>
>
> Vadim
>
>
>
> ---------------------------------------------------------------------
> Please check that your question has not already been answered in the
> FAQ before posting. <http://xml.apache.org/cocoon/faq/index.html>
>
> To unsubscribe, e-mail: <co...@xml.apache.org>
> For additional commands, e-mail: <co...@xml.apache.org>
>
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Re: Possible threading issues with xsltc + BCEL ???
Posted by Vadim Gritsenko <va...@verizon.net>.
Michael Melhem wrote:
>Hi Cocooners,
>
>Are their any other Cocoon users having Threading Issues with xsltc?
>
>Its seems that if you have a translat being compiled at the same time by two
>or more threads (instances of TraxTransformer) you will get issues because
>BCEL is not (by design) threadsafe as it users static methods and
>variables which seem to be overwriting each other???
>
>Once the Translets get compiled however, such threading issues disappear.
>
>Does anyone have expirence with this?
>
>Regards,
>Michael Melhem
>
>Ps After locally patching org.apache.xalan.xsltc.trax.TemplatesHandlerImpl.java
>with some synch code around the compile block, all seems OK.
>
>
Can you notify Xalan guys about this issue? Or may be sent'em a patch?
Vadim
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Re: Possible threading issues with xsltc + BCEL ???
Posted by Vadim Gritsenko <va...@verizon.net>.
Michael Melhem wrote:
>Hi Cocooners,
>
>Are their any other Cocoon users having Threading Issues with xsltc?
>
>Its seems that if you have a translat being compiled at the same time by two
>or more threads (instances of TraxTransformer) you will get issues because
>BCEL is not (by design) threadsafe as it users static methods and
>variables which seem to be overwriting each other???
>
>Once the Translets get compiled however, such threading issues disappear.
>
>Does anyone have expirence with this?
>
>Regards,
>Michael Melhem
>
>Ps After locally patching org.apache.xalan.xsltc.trax.TemplatesHandlerImpl.java
>with some synch code around the compile block, all seems OK.
>
>
Can you notify Xalan guys about this issue? Or may be sent'em a patch?
Vadim
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Re: Possible threading issues with xsltc + BCEL ???
Posted by Andy Lewis <aj...@ascii27.net>.
I've hit this - it only happens when compiling the stylesheet though. Concurrent requests right at
startup do not do wel...I had no workaround...but that would be a GOOD THING to have fixed...
> Hi Cocooners,
>
> Are their any other Cocoon users having Threading Issues with xsltc?
>
> Its seems that if you have a translat being compiled at the same time by two or more threads
> (instances of TraxTransformer) you will get issues because BCEL is not (by design) threadsafe
> as it users static methods and variables which seem to be overwriting each other???
>
> Once the Translets get compiled however, such threading issues disappear.
>
> Does anyone have expirence with this?
>
> Regards,
> Michael Melhem
>
> Ps After locally patching org.apache.xalan.xsltc.trax.TemplatesHandlerImpl.java with some synch
> code around the compile block, all seems OK.
>
>
>
>
> --------------------------------------------------------------------- To unsubscribe, e-mail:
> cocoon-dev-unsubscribe@xml.apache.org
> For additional commands, email: cocoon-dev-help@xml.apache.org
--
"The heights of genius are only measurable by the depths of stupidity."
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Re: Possible threading issues with xsltc + BCEL ???
Posted by Andy Lewis <aj...@ascii27.net>.
I've hit this - it only happens when compiling the stylesheet though. Concurrent requests right at
startup do not do wel...I had no workaround...but that would be a GOOD THING to have fixed...
> Hi Cocooners,
>
> Are their any other Cocoon users having Threading Issues with xsltc?
>
> Its seems that if you have a translat being compiled at the same time by two or more threads
> (instances of TraxTransformer) you will get issues because BCEL is not (by design) threadsafe
> as it users static methods and variables which seem to be overwriting each other???
>
> Once the Translets get compiled however, such threading issues disappear.
>
> Does anyone have expirence with this?
>
> Regards,
> Michael Melhem
>
> Ps After locally patching org.apache.xalan.xsltc.trax.TemplatesHandlerImpl.java with some synch
> code around the compile block, all seems OK.
>
>
>
>
> --------------------------------------------------------------------- To unsubscribe, e-mail:
> cocoon-dev-unsubscribe@xml.apache.org
> For additional commands, email: cocoon-dev-help@xml.apache.org
--
"The heights of genius are only measurable by the depths of stupidity."
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