[Python-Dev] profiler hooks (original) (raw)

Fred L. Drake, Jr. fdrake@acm.org
Fri, 12 Oct 2001 15:15:53 -0400

For those who aren't already aware of it, I've been working on a new profiler for Python, implemented in C. It includes features that will allow per-line profiling if desired. I should have the implementation checked in shortly. One thing that I'd like to change is the way the profiler/tracer are dispatched from the main eval loop. The changes are easy enough, but I can simplify things further if we don't need to support both a profiler and tracer simultaneously. (The trace hook is used by sys.settrace(), needed for the debugger and 3rd-party coverage tools; the profile hook is used for (you guessed it!) the profiler, via sys.setprofile().) Would anyone object to working things so that only one of the two can be installed at a time? They can both operate, but it doesn't make sense to use the trace hook while a profiler is active.

-Fred

-- Fred L. Drake, Jr. PythonLabs at Zope Corporation