[release/9.0] Fixes hang in WinUI apps published to AOT #107751
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…rom and adding to the nativeObjectReference list around the same time and causing removal to fail.
…d to improve performance of remove given it now takes a lock
…ads during add / remove.
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jeffschwMSFT
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Sep 12, 2024
jkoritzinsky
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This was referenced Sep 12, 2024
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Backport of #104583 to release/9.0
/cc @agocke @manodasanW
Customer Impact
WinUI apps published for AOT randomly hang due to a GC exception in ComWrappers causing for them to be unable to be reliably used in production scenarios.
Regression
[If yes, specify when the regression was introduced. Provide the PR or commit if known.]
Testing
Tested with WinUI Gallery published to AOT which represents a more real work app with a bunch of scenarios. This issue was exposed by a race in modifying a collection between the finalizer and another thread making it hard to catch until real apps were using it.
Risk
Low - changes scoped to ComWrappers implementation on AOT.
IMPORTANT: If this backport is for a servicing release, please verify that:
The PR target branch is
release/X.0-staging, notrelease/X.0.If the change touches code that ships in a NuGet package, you have added the necessary package authoring and gotten it explicitly reviewed.