nogipx / rpc_dart

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Build # 30670814215

Build Type

push

github

Committed by nogipx

Commit Message

feat(rpc_data_sqlite): expose a durability barrier for the IndexedDB VFS

sqlite3's VFS interface is synchronous, IndexedDB is not, so that VFS
acknowledges a write and performs it afterwards from a queue. An app killed
between the two loses writes the database already reported as committed —
routine on Android, where backgrounded WebView apps are killed without a
clean unload, and invisible to everything downstream.

Until now the queue was only drained by closeHook, i.e. on an orderly
shutdown, which is exactly the case that does not happen. Add
DatabaseConnection.flush() so callers can place a barrier where losing the
last writes would cost something: after a unit of work, and before the host
suspends. No-op on the native VFS, which writes through.

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