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cpython/Lib/test/output/test_profile

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Hopefully fix the profiler right. Add a test suite that checks that it deals correctly with some anomalous cases; according to this test suite I've fixed it right. The anomalous cases had to do with 'exception' events: these aren't generated when they would be most helpful, and the profiler has to work hard to recover the right information. The problems occur when C code (such as hasattr(), which is used as the example here) calls back into Python code and clears an exception raised by that Python code. Consider this example: def foo(): hasattr(obj, "bar") Where obj is an instance from a class like this: class C: def __getattr__(self, name): raise AttributeError The profiler sees the following sequence of events: call (foo) call (__getattr__) exception (in __getattr__) return (from foo) Previously, the profiler would assume the return event returned from __getattr__. An if statement checking for this condition and raising an exception was commented out... This version does the right thing.
2001-10-03 21:58:24 -03:00
test_profile
53 function calls in 1.000 CPU seconds
Ordered by: standard name
ncalls tottime percall cumtime percall filename:lineno(function)
1 0.000 0.000 1.000 1.000 <string>:1(?)
0 0.000 0.000 profile:0(profiler)
1 0.000 0.000 1.000 1.000 profile:0(testfunc())
1 0.400 0.400 1.000 1.000 test_profile.py:21(testfunc)
2 0.080 0.040 0.600 0.300 test_profile.py:30(helper)
4 0.116 0.029 0.120 0.030 test_profile.py:48(helper1)
8 0.312 0.039 0.400 0.050 test_profile.py:56(helper2)
8 0.064 0.008 0.080 0.010 test_profile.py:66(subhelper)
28 0.028 0.001 0.028 0.001 test_profile.py:78(__getattr__)