draft Carrier API

[Doug Lea]

On 3/7/20 6:17 PM, Alex Otenko wrote:

> A ticket system allows to build nicer things, because essentially you
> give away a bit of control what to do during  the wait. You can switch
> between try* and blocking after you made the call, choosing when the
> time to block is more suitable.

In other words, you'd sometimes like Carrier to act more like
ExecutorService (obtaining a Future or something like it on submission).
Stay tuned for part 3 of j.u.c loom-related support for doing this.

-Doug