[XML-SIG] Advice on how to deal with locking problems using python-wrapped
C libs in MT frameworks like Zope/Twisted?
Craeg K Strong
Fri, 21 Mar 2003 14:24:57 -0500
I am attempting to plug in Python bindings for C/C++ based XML
frameworks like Sablotron,
libxslt, and Xalan/C into Zope. I am noticing lockup/timeout behavior
whenever the integration
framework calls back out to Zope. For example, consider the following
In this case, libxslt is calling back out to Zope to resolve the
relative url "../simple.xsl"
and that is when the lockup occurs.
I don't have these problems with 4Suite, perhaps because it is pure Python?
My guess is that the Python wrappers might be using the Global
in such a way that Zope gets locked out trying to access the file resource?
My question: has anyone else had to deal with such issues? Do you
think something like using asyncore or just creating a worker thread
for the Python wrapper might make a difference?
I am planning on trying these strategies out, myself, I just wanted to
see if there was some other poor soul out there who has
already dealt with such issues.
Thanks very much,