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Remove locks from COM events delegate management. #75863

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Merged
merged 9 commits into from
Sep 22, 2022
Merged

Remove locks from COM events delegate management. #75863

merged 9 commits into from
Sep 22, 2022

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AaronRobinsonMSFT
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This removes locks and instead assumes the collection is immutable.

Fixes #73754

@AaronRobinsonMSFT
Remove locks from COM events delegate management.
2a5c722 
This removes locks and instead assumes the collection is immutable.
@AaronRobinsonMSFT AaronRobinsonMSFT added this to the 8.0.0 milestone Sep 19, 2022
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/cc @dotnet/interop-contrib

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@stephentoub The CI is green. Any other thoughts?

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jkotas commented Sep 21, 2022

Use array instead of List
Revert "Use array instead of List"

Was there an actual problem or you did not like the result? (It looks better to me with arrays instead of List.)

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Use array instead of List
Revert "Use array instead of List"

Was there an actual problem or you did not like the result? (It looks better to me with arrays instead of List.)

It was an option. However, I needed to create a RemoveAll local with annoying logic so deferred to just using List<T>. Either works and appear correct, other than the "Remove" logic you pointed out above. Let me see about simplifying it further.

@AaronRobinsonMSFT
Revert "Revert "Use array instead of List<T>""
93b3891 
This reverts commit aa3dddd.
@AaronRobinsonMSFT
Remove usage of Delegate.Combine. Upon deeper inspection there
4ebac6d 
doesn't seem to be any value to using that mechanism. An added
bonus is that it simplifies the logic.
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@jkotas @stephentoub I switched back to using arrays, let me know if you prefer List<T>. I also removed the Delegate.Combine logic. My biggest concern with changing that related to threading since this is a COM code path. Looking through it, I no longer have any concerns so it was removed.

stephentoub
stephentoub reviewed Sep 21, 2022
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@AaronRobinsonMSFT AaronRobinsonMSFT merged commit e4d115a into dotnet:main Sep 22, 2022
@AaronRobinsonMSFT AaronRobinsonMSFT deleted the runtime_73754 branch September 22, 2022 19:28
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/backport to release/7.0

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Started backporting to release/7.0: https://github.com/dotnet/runtime/actions/runs/3108191020

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/backport to release/6.0

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Started backporting to release/6.0: https://github.com/dotnet/runtime/actions/runs/3108193116

This was referenced Sep 22, 2022
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@davidfowl davidfowl davidfowl left review comments

@jkoritzinsky jkoritzinsky jkoritzinsky left review comments

@jkotas jkotas jkotas left review comments

@stephentoub stephentoub stephentoub approved these changes

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COM event with recursion .net 6 problem
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@AaronRobinsonMSFT @jkotas @davidfowl @jkoritzinsky @stephentoub