I am trying to perform test coverage analysis on Corba
servers implemented in Python using omniORB, an
excellent open-source Corba ORB from AT&T (formerly
Oracle-Olivetti) labs in Cambridge, UK.

I am using for this purpose a modified version of Neil
Schemenauer's code_coverage.py module, which works by
using sys.settrace to set a profiling function.

Unfortunately, new threads do not inherit the trace
function set for the parent thread, which means I am
not profiling the actual work that gets done in Corba
requests :-(

It would be useful to make an option to inherit
sys_tracefunc in PyThreadState_New an option so
multi-threaded programs can be traced/debugged more
easily. I know Fred Drake is reworking the trace
framework to allow profilers written in C, but I am not
sure if this will address this issue.

I can work around this problem by patching omniORB or
PyThreadState_new to copy and INCREF the trace function
every time a new thread is created by the C++ code, but
I would much prefer a more general solution that could
be contributed back to the standard Python code base.
Perhaps what is really needed is the ability to hook
Python thread startup.

Yours,

-- Fazal Majid

I haven't used settrace() functionality myself but a quick test using
latest python shows that trace function set with sys.settrace() is not
inherited by newly created threads.

I am closing this as there is no activity for long time.