Steve Mathias <[EMAIL PROTECTED]> writes:
> I've been meaning to compose an e-mail about this for a few days now,
> but just haven't gotten around to it. You might not like to hear this,
> but I think there is a *big* problem.
<sigh>
Okey dokey
</sigh>
> When the XML validation is turned on, the script gradually eats memory
> until it crashes. If validation is off, the script runs fine.
Well, that is good news (depending on your POV) - this is possibly a
Xerces-C memory leak then, and not something stupid that I've
done. I've writtent the list, and I'll work on a C++ test to see if I
can reproduce it outside XML-Xerces.
> I have tried everything I can think of to get the memory to be
> released, but with no success.
>
> I am *definitely* creating a new parser every time.
Yeah, there isn't anything that you can do about this - if it's in the
validation bit, that's deep in the internals of Xerces-C, and it's
nothing that XML-Xerces could possibly affect.
> Here's the sub that does the validation:
>
> sub validateXML {
> my $xml = shift ;
>
> # Just to make sure there is only one, $Parser is global but it's not used
> anywhere else:
> $Parser = XML::Xerces::XMLReaderFactory::createXMLReader() ;
> $Parser->setFeature("http://xml.org/sax/features/namespaces";, 1) ;
> $Parser->setFeature("http://apache.org/xml/features/validation/schema";, 1) ;
>
> $Parser->setFeature("http://apache.org/xml/features/validation/schema-full-checking";,
> 1) ;
> $Parser->setFeature("http://apache.org/xml/features/validation-error-as-fatal";, 1)
> ;
> $Parser->setFeature("http://xml.org/sax/features/validation";, 1) ;
> $Parser->$Parser->setFeature("http://apache.org/xml/features/validation/dynamic";,
> 0) ;
See the new example for samples/SAX2Count.pl on how to use the unicode
constants defined in Xerces-C, that will keep you from having to
hard-code these strings in your app. All the unicode constants are
enumerated in docs/XMLUni.txt.
> my $errorHandler = new XML::Xerces::PerlErrorHandler() ;
> $Parser->setErrorHandler($errorHandler) ;
> my $contentHandler = new XML::Xerces::PerlContentHandler() ;
> $Parser->setContentHandler($contentHandler) ;
>
> eval {
> $Parser->parse( XML::Xerces::MemBufInputSource->new($xml) ) ;
> } ;
> undef $Parser ; # reclaim resources??
It should. In the meantime, I would run without validation.
Do you really need to validate internally? You could wrap the script
to run an external validator like nsglms if you really need it. I hope
to have this fixed soon.
More as it happens,
jas.
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