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On Fri, Oct 18, 2019 at 3:10 AM GAUDRY Eloi <eloi.gau...@fft.be> wrote: > Hi > > I would like to be able to get an handle on PyGC_Head*_PyGC_generation0 > from a CPython extension. > This is possible when building Python on a Posix host, but not on Windows > because of a missing PyAPI_DATA wrapping of the said object in the > objimpl.h header. > > Having the possibility to inspect the PyGC_Head here can be very useful > when customizing the way a garbage-collectable object created from CPython > extension would be cleaned/inspected, etc. > > Any chance this patch could be added to get the same capabilities on > Windows and Posix platforms ? > > Thanks for your feedback, > Eloi > > > > Index: Include/objimpl.h > =================================================================== > --- Include/objimpl.h (revision 118072) > +++ Include/objimpl.h (working copy) > @@ -258,7 +258,7 @@ > double dummy; /* force worst-case alignment */ > } PyGC_Head; > > -extern PyGC_Head *_PyGC_generation0; > +PyAPI_DATA(PyGC_Head*) _PyGC_generation0; > > #define _Py_AS_GC(o) ((PyGC_Head *)(o)-1) > > _______________________________________________ > Python-ideas mailing list -- python-ideas@python.org > To unsubscribe send an email to python-ideas-le...@python.org > https://mail.python.org/mailman3/lists/python-ideas.python.org/ > Message archived at > https://mail.python.org/archives/list/python-ideas@python.org/message/7FC2NHAOMKBHONFTUKMAHO5F56UU5UUD/ > Code of Conduct: http://python.org/psf/codeofconduct/ > -- --Guido van Rossum (python.org/~guido) *Pronouns: he/him **(why is my pronoun here?)* <http://feministing.com/2015/02/03/how-using-they-as-a-singular-pronoun-can-change-the-world/>
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