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authorTim Peters <tim.peters@gmail.com>2006-05-26 23:14:37 (GMT)
committerTim Peters <tim.peters@gmail.com>2006-05-26 23:14:37 (GMT)
commit7df5e7f4b2cd1f0dac674a7b10261a2e8c657636 (patch)
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parent7e0a62ea9052faf0e19dc2438124751b8f68ce16 (diff)
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Patch 1145039.
set_exc_info(), reset_exc_info(): By exploiting the likely (who knows?) invariant that when an exception's `type` is NULL, its `value` and `traceback` are also NULL, save some cycles in heavily-executed code. This is a "a kronar saved is a kronar earned" patch: the speedup isn't reliably measurable, but it obviously does reduce the operation count in the normal (no exception raised) path through PyEval_EvalFrameEx(). The tim-exc_sanity branch tries to push this harder, but is still blowing up (at least in part due to pre-existing subtle bugs that appear to have no other visible consequences!). Not a bugfix candidate.
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