Re: [xml] IO callbacks are not thread-safe

[Daniel Veillard <veillard redhat com>]

On Thu, Apr 02, 2009 at 05:33:54PM +0200, Petr Pajas wrote:
> I think the original reason for this was that when Perl bindings are 
> used with mod_perl, there may be other (non-Perl) components using 
> the global callbacks differently; that's why XML::LibXML Perl 
> module tries to clean after itself (restoring whatever was in the 
> callbacks previously). Is there any other way around this?

  Urgh ..
Why do they need global URI handler registration ?
The cleanest wey would be to always use the I/O parser context creation
routine like xmlCtxtReadIO/xmlReadIO... and define the I/O handlers
to map to whatever is being registered globally now. Though the
limitation is for external subset resources, that doesn't work well.
Maybe we need to make those per-thread but this is getting ugly !

Daniel

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