Propagate suspension handling to CloudKit metadata - #502
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mbrandonw merged 3 commits intoJul 27, 2026
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Motivation
SyncEnginealready includes iOS-specific lifecycle handling: it observesUIApplication.willResignActiveNotification, begins a background task, and attempts to send pending private and shared CloudKit changes before the app is suspended.watchOS does not use this integration and can suspend apps much more aggressively. GRDB supports this environment through the experimental flag
observesSuspensionNotifications, allowing clients to release database locks when postingDatabase.suspendNotification.However, while the user database can opt into this behavior,
SyncEnginemaintains a separate CloudKit metadata connection that does not currently participate. This can leave the metadata database holding a SQLite lock during suspension, resulting in aRUNNINGBOARD 0xdead10cctermination on watchOS.