Eric has been looking into this. It's probably the only solution if we can't get immutable objects. But I would prefer the latter, if we can get the performance penalty low enough.
On Thu, Dec 16, 2021 at 2:31 AM Victor Stinner <vstin...@python.org> wrote: > Hi, > > One option to solve the https://bugs.python.org/issue40601 "[C API] > Hide static types from the limited C API" issue without breaking the > backward compatibility is to leave the C API and the stable ABI as > they are for the main interpreter (static types), but force > subinterpreters running in parallel to use their own heap types. It > means that subinterpreters would be able to use the main interpreter > GIL or own their GIL. By default, the GIL would still be shared. > > C extensions using "&PyLongType" (static type) would continue to work > in the main interpreter. > > C extensions which want to opt-in for running subinterpreters in > parallel would not access to "&PyLong_Type" but be forced to call > PyLong_GetType() (heap type). > > Internally, Python should be modified to replace "&PyLongType" with > PyLong_GetType(). So the code would work with static types and heap > types. > > It also means that a subinterpreter running in parallel would only be > able to import C extensions built with explicit support for this > feature. Otherwise, an ImportError would be raised. > > Victor > -- > Night gathers, and now my watch begins. It shall not end until my death. > _______________________________________________ > Python-Dev mailing list -- python-dev@python.org > To unsubscribe send an email to python-dev-le...@python.org > https://mail.python.org/mailman3/lists/python-dev.python.org/ > Message archived at > https://mail.python.org/archives/list/python-dev@python.org/message/QTY25AHCLOXRCQ2LADUUZFVKNVLLYS25/ > 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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