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link to interior mutability docs
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@ngoldbaum
ngoldbaum committed Oct 1, 2024
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Expand Up @@ -86,8 +86,10 @@ on mutable pyclass implementations that do not make strong assumptions about the
GIL.

It was always possible to generate panics like this in PyO3 in code that
releases the GIL with `allow_threads`, but now in free-threaded Python there are
more opportunities to trigger these panics because there is no GIL.
releases the GIL with `allow_threads` (see [the docs on interior
mutability](./class.md#bound-and-interior-mutability),) but now in free-threaded
Python there are more opportunities to trigger these panics because there is no
GIL.

We plan to allow user-selectable semantics for for mutable pyclass definitions in
PyO3 0.24, allowing some form of opt-in locking to emulate the GIL if
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