Re: [xml] Newbie Help

[Daniel Veillard <veillard redhat com>]

On Sat, Aug 14, 2004 at 12:33:02AM -0500, Bryan Christ wrote:
> I actually solved my problem.   None of the examples and tutorials
> mentioned using xmlXPathInit().  However, because I found a discussion
> somewhere about needing to call this function once in a multi-threaded
> application I included it in my code.  However, there was nothing (that
> I could find) that stated that the call had to be made outside of the
> "worker thread".  Since I only need to implement xml and xpath in this
> one thread, I was calling xmlXPathInit() in that thread.  Eventually, as
> a shot-in-the-dark, I moved it to the calling process, main(), and
> everything works now.  Perhaps I have just overlooked the documentation
> which details this behavior. 

  That's really strange. xmlXPathInit just do the initialization
of 4 global variables used for +Inf -Inf NaN and -0 handling in
XPath. They are truely global and hence shared by all threads,
so I would really expect xmlXPathInit() to affect all threads
identically. This is not true for all the initializations though
and it's usually better to call the init routine in the main
thread.
  Thanks for the feedback, this is bizarre, but hopefully fixed now,

Daniel

-- 
Daniel Veillard      | Red Hat Desktop team http://redhat.com/
veillard redhat com  | libxml GNOME XML XSLT toolkit  http://xmlsoft.org/
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