On Fri, Aug 18, 2006 at 02:21:40PM -0700, Bryan wrote: > > i've written a program that uses python c api code that lives in a > shared library that is loaded by a custom apache module (mod_xxx). this > python c api code all works correctly under our test server and under > apache but only if mod_python isn't loaded. when apache loads > mod_python as shown in the http.conf snippet below, > PyThreadState_Swap(NULL) in mod_xxx returns NULL. when the snippet of > code in http.conf is commented out, it works again. what do i have to > do to have mod_xxx code work correctly when apache loads mod_python? > > > failure case when apache loads mod_python: > Py_Initialize() succeeded > PyThreadState_Swap(NULL) failed > > > sucess case when apache doesn't load mod_python: > Py_Initialize() succeeded > PyThreadState_Swap(NULL) succeeded >
Running multiple python interpreters in the same process isn't supported. It works OK for most things but some low-level guts are shared between interpreters so it is possible to run into trouble. You aren't running multiple interpreters in the same process. You and mod_python both think you are in charge and end up nuking each other's states. Py_Initialize() resets the global state and shouldn't be called more than once. You can create more than one sub-interpreter (check out the mod_python source for how, the source is small and readable). The best thing to do would be to load your module last and conitionally call Py_Initialize() if someone else hasn't already. -Jack -- http://mail.python.org/mailman/listinfo/python-list
