Fix Scope propagation in ZStream#runScoped
#9327
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ZStream#runScoped
jdegoes
approved these changes
Nov 23, 2024
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/fixes #9316
In some complex usage patterns such as the one in the linked issue, we cannot simply revert the state of fiber refs within
FiberRef#locally(so that we can reuse the same instance ofFiberRefs) as we have to maintain the full "history" of changes made to aFiberRef. The fix to the issue is rather simple; we always update the value of theFiberRefwithinFiberRef#locallywhen reverting the value.The annoying part is that this fix "destroys" some of the optimizations that we had in place as it requires a new instance of
FiberRefsto be created whenever we revert the state inFiberRef#locally. I will followup with another PR that will refactor the way that we determine whether to apply shortcuts inFiberRefs