Actors

Phase A

• Actors are introduced using fibers.
• Messages may be sent to an actor and responses received using channels.

Phase B

• Actors gain supervision trees
• Messages must be delivered at least once.
• An actor crashing may not lose other messages.

Phase C

• Start integrating actors in to the base system.
• Signal handler & waitpid handler should run as actors with supervision.

Phase D

• Make the main thread(s) run as an actor within the supervision tree.

Phase E

• Actors are thread pools. The entire tree of threads is monitored.