refactor PyErr state to reduce blast radius of threading challenge
#4650
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davidhewitt
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Icxolu
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Oct 25, 2024
src/err/err_state.rs
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| pub(crate) fn normalize(self, py: Python<'_>) -> PyErrStateNormalized { | ||
| impl PyErrStateInner { | ||
| pub fn normalize(self, py: Python<'_>) -> PyErrStateNormalized { |
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Is there a particular reason this (and below) switched from pub(crate) to pub?
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Nope, just me moving stuff from the outer module and forgetting to adjust visibility. I'll fixup and proceed with merge. Thanks for catching 👍
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First step towards solving #4584.
Whether we drop the lazy state or not, the first step seems to be to clean up the
PyErrimplementation so that the location of the threading problem is fully localised withinerr_state.rs.I do this by wrapping the
UnsafeCell<Option<PyErrState>>as a newPyErrStatestruct and rename the original state enum toPyErrStateInner. The normalPyErrmethods now can't even see thePyErrStateInnerenum (and have to go through the.normalized()helper onPyErrState).This is a pure refactoring without any behaviour changes, we can decide on behaviour changes in future PRs.