Fix cancellation race condition in Parallel.ForEachAsync#47396
Merged
stephentoub merged 1 commit intodotnet:masterfrom Jan 25, 2021
Merged
Fix cancellation race condition in Parallel.ForEachAsync#47396stephentoub merged 1 commit intodotnet:masterfrom
stephentoub merged 1 commit intodotnet:masterfrom
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If cancellation is requested at just the "wrong" time, we may end up canceling the operation but reporting it as a successful completion, due to our relying on _registration.Token being the caller-provided token, but that not being the case if cancellation was requested prior to UnsafeRegister being called, in which case it'll return a default registration.
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Tagging subscribers to this area: @tarekgh Issue DetailsIf cancellation is requested at just the "wrong" time, we may end up canceling the operation but reporting it as a successful completion, due to our relying on _registration.Token being the caller-provided token, but that not being the case if cancellation was requested prior to UnsafeRegister being called, in which case it'll return a default registration.
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tarekgh
approved these changes
Jan 25, 2021
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If cancellation is requested at just the "wrong" time, we may end up canceling the operation but reporting it as a successful completion, due to our relying on _registration.Token being the caller-provided token, but that not being the case if cancellation was requested prior to UnsafeRegister being called, in which case it'll return a default registration.
Fixes #47360
cc: @tarekgh