Actors 101

Using Swift
51

Here is something that might be useful, detecting reentrancy (interleaving) in actors, posted by @aetherealtech.

actor World {
  ...

  private var occupancy = 0 {
    didSet { if occupancy > 1 { print("Re-entrance detected") } }
  }

  func doSomeWork(with entity: Entity) async {
    // Some synchronous work
    occupancy += 1
    await doSomethingAsync()
    occupancy -= 1
    // More synchronous work
  }
}
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