tractor

Actor framework for Rust, modelled after Pony's actors:

• Actors cannot deadlocks!

• Sending a message to an Actor can never fail.

• No async in Actors. Behaviors cannot block.

• Actors are garbage collected.

• The implemention of tractor is rather simple compared against other Actor implementations in Rust.

More details:

• Actors have unbounded mailboxes and send is non-blocking.

• Actors cannot be manually stopped. They terminate as soon as no further reference to them exists and their mailbox is empty. This implies that sending a message to an Actor can never fail except for running out of memory. To avoid overloading of an Actor you can check it's current length of it's mailbox.

• The behaviors of an Actor have no return value! As such, Actors do not support "waiting" for a result. To "simulate" Request/Response, pass the Actors address in the message and respond to it.

• The behaviors of an Actor are NOT async fns! Async would imply that the execution can "halt". There might be AsyncActor for convenience in the future.

• NOTE: Any Actor cycles will defeat the garbage collection of Actors.