2012/12/13 Stefan Behnel <[email protected]> > My intuition was to add a fastpath to Py_DECREF() that would do (close to) > nothing if the PyPy object is still alive. Either that, or move this whole > decision into C by somehow increasing the C level refcount during the > lifetime of the PyPy object and decreasing it when the PyPy object dies. >
It may be difficult, because most standard types don't have a __del__, and I'm not sure we can attach a weak reference. > The latter approach (if doable) is obviously preferable from a C point of > view because it would improve the hit-count of the "common case" tests in > the INCREF/DECREF C macros, thus avoiding unnecessary calls into PyPy all > together by using inlined code. That would give it about the same speed as > in CPython for objects that are being reused in C code more than once for > which a PyPy object reference exists (certainly not an unusual case). > -- Amaury Forgeot d'Arc
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