Non-suspending alternative to await?

[gwendal.roue (Gwendal Roué)]

@jaredgrubb

I think I want to write it like this:

nonisolated func startAllThings() { // still not async
    fire_forget_await thing.start()
}

.. where it's ok to block/suspend briefly (?) up until the point that 'thing' is guaranteed to run this "job" next (or even up to the point it would itself suspend?).

The keyword here is "next" (i.e. you look for a strict ordering). There is no built-in tool for that in the standard library, but there exist libraries. See for example mattmassicotte/Queue:

let queue = AsyncQueue()
// Start is guaranteed to run before stop.
queue.addOperation { await thing.start() }
queue.addOperation { await thing.stop() }