Fix race condition in disposing STA SynchronizationContext#7229
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Youssef1313 merged 2 commits intomainfrom Jan 15, 2026
Merged
Fix race condition in disposing STA SynchronizationContext#7229Youssef1313 merged 2 commits intomainfrom
Youssef1313 merged 2 commits intomainfrom
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Pull request overview
This PR fixes a race condition in the SingleThreadedSTASynchronizationContext class where the BlockingCollection could be disposed while the background thread was still consuming from it. The fix introduces a ManualResetEventSlim to ensure the thread completes before disposing the queue.
Changes:
- Added thread synchronization using
ManualResetEventSlimto ensure safe disposal - Modified the
Disposemethod to wait for thread completion before disposing resources - Added explanatory comments documenting the disposal flow
...TestFramework/TestFramework/Attributes/TestMethod/SingleThreadedSTASynchronizationContext.cs
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...TestFramework/TestFramework/Attributes/TestMethod/SingleThreadedSTASynchronizationContext.cs
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@Youssef1313 I've opened a new pull request, #7231, to work on those changes. Once the pull request is ready, I'll request review from you. |
mariam-abdulla
approved these changes
Jan 15, 2026
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The test that was added in #7192 along with the implementation is flaky. This should fix it.