Bridging legacy DispatchQueue code to async/await API design question

[gwendal.roue (Gwendal Roué)]

I did exactly like you. I submitted this technique in the linked thread below. The feedback was quite reassuring.

Cooperative pool deadlock when calling into an opaque subsystem

Thanks for your sample code. Since I read about those potential deadlocks it the interaction between GCD aka Dispatch and Swift concurrency, I wasn't feeling comfortable with the async SQLite accesses of GRDB, which use GCD under the hood. No one has ever reported this issue, but maybe people are shy. So I tried to reproduce the deadlock, inspired by your example, with a DatabasePool, the database connection that can perform parallel reads: func testTaskGroup() async throws { let dbPool = …