Don't throw exceptions for file changes after a project is unloaded #57782
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ghost
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ryzngard
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Nov 16, 2021
| _eventSubscriptionTracker.Clear(); | ||
| } | ||
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| _documentFileChangeContext.Dispose(); |
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Should the dispose be in the lock, or are we guaranteed no race calls to RemoveFromWorkspace?
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Once we're at this point, we know there's only one thread handling the disposal.
| Private ReadOnly _lock As New Object | ||
| Private ReadOnly _watchedFiles As New List(Of WatchedEntity) | ||
| Private ReadOnly _watchedDirectories As New List(Of WatchedEntity) | ||
| Private _watchedFiles As ImmutableList(Of WatchedEntity) = ImmutableList(Of WatchedEntity).Empty |
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I'm not entirely sure why these were changed. Is it a perf concern? List actually seems better since we treat them as mutable under a lock.
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To properly test this fix, I need to implement support in the mock to test the sequence of events of:
- Capture the list of watched entities.
- Unsubscribe from something.
- Raise the event from the captured list in 1.
Making this immutable means I can easily capture it for later.
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File change notifications are async, and can come after we've removed the project from the workspace. As of this writing, this has happened approximately 58 million times since 16.0 according to fault telemetry.
Fixes https://devdiv.visualstudio.com/DevDiv/_workitems/edit/1433689