Communication methods between concurrent tasks, modelling recovery / error handling

Good evening my esteemed colleagues. I am implementing a communication library which requires concurrency to work correctly. The structure of my application could be represented as the following diagram: setup -> taskAcyclic: configuration state machine -> taskCyclic setup allocates the memory / resources / arranges various const structures after setup we begin taskAcyclic taskAcyclic begets taskCyclic. The lifetime of taskAcyclic exceeds taskCyclic. (structured concurrency) ta...