Don't use callbacks when performing sync IO with async handles#126845

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Copilot wants to merge 13 commits into

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copilot/remove-callbacks-sync-io

Commits on Apr 13, 2026

Initial plan
Copilot
authored
Replace CallbackResetEvent with ManualResetEvent and low-order bit hEvent for sync IO with async handles

Copilot
and
adamsitnik
authored

Commits on Apr 25, 2026

Cache event handle in SafeFileHandle, reuse existing CreateEventEx P/Invoke

Copilot
and
adamsitnik
authored
Move event creation logic into SafeFileHandle.RentSyncWaitHandle

Copilot
and
adamsitnik
authored