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Posted to oro-user@jakarta.apache.org by Matt Keveney <ma...@nimblefish.com> on 2004/04/16 18:43:43 UTC

sporadic ArrayIndexOutOfBoundsException?

All,

Using Oro 2.0.3, we're occasionally seeing an
ArrayIndexOutOfBoundsException emanating from 

	Perl5Matcher.__match(Perl5Matcher.java:859)

Or occasionally

	Perl5Matcher.__repeat(Perl5Matcher.java:762)

This happens only under heavy load & may be related to a threading
issue... my research is very preliminary at this point.

Before I dive in, has anyone seen this one before?  ...I didn't see
anything in release notes or Bugzilla.

I'm using a static instance of PatternCacheLRU, shared among different
threads... which, I suppose, means that the Patterns that it returns are
potentially shared too.  Does anyone know whether these objects are
thread-safe when used in this way?

-Matt




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Re: sporadic ArrayIndexOutOfBoundsException?

Posted by Jordi Salvat i Alabart <js...@atg.com>.
Did you use READ_ONLY_MASK when compiling the pattern? Not using it is a 
frequent source of problems in multi-threaded usage.

-- 
Salut,

Jordi.

Matt Keveney wrote:
> All,
> 
> Using Oro 2.0.3, we're occasionally seeing an
> ArrayIndexOutOfBoundsException emanating from 
> 
> 	Perl5Matcher.__match(Perl5Matcher.java:859)
> 
> Or occasionally
> 
> 	Perl5Matcher.__repeat(Perl5Matcher.java:762)
> 
> This happens only under heavy load & may be related to a threading
> issue... my research is very preliminary at this point.
> 
> Before I dive in, has anyone seen this one before?  ...I didn't see
> anything in release notes or Bugzilla.
> 
> I'm using a static instance of PatternCacheLRU, shared among different
> threads... which, I suppose, means that the Patterns that it returns are
> potentially shared too.  Does anyone know whether these objects are
> thread-safe when used in this way?
> 
> -Matt
> 
> 
> 
> 
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> To unsubscribe, e-mail: oro-user-unsubscribe@jakarta.apache.org
> For additional commands, e-mail: oro-user-help@jakarta.apache.org
> 
> 

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