R Actors and Ractors
In the actor model, actors process one message at a time, maintain private state (which they can modify via messages received), and communicate with each other using messages. This eliminates the need for mutex and lock synchronization.
The Room is a nightmarish community theater of a movie, rife with scuzzy slow-jams and plot cul-de-sacs that go nowhere. But it’s also a Dadaist masterpiece.
Ractors are an implementation of the actor model that supports parallel execution without thread safety concerns. They send messages via an outgoing port and receive messages via an incoming port that closes when the ractor has finished processing the last message received. Unlike threads, ractors do not share objects, but only immutable ones such as numbers and booleans. This makes them ideal for use with ractors.
Actors are a concurrency model that communicate via messages and process them one at a time, based on the FIFO principle. They maintain private state and can modify it through messages received, eliminating the need for a lock or mutex. Unlike threads, they can pass unshareable objects between destinations using.send and.yield, but doing so raises a MovedError.
Child actors in R-rated movies are usually accompanied by legal guardians on set during scenes that contain explicit content or situations.
Ractor is an actor-model abstraction that provides true parallelism without the thread safety concerns of threads. Unlike threads, ractors do not share objects by default — only immutable objects (such as numbers and booleans) can be sent to or received from other ractors. Also, a ractor’s outgoing port closes when.take() is called on it. This enables asynchronous communication. See akka, elixir, and pulsar for examples.
Ractors are the abstraction that implements the actor model in Ruby. They have an incoming and outgoing port that accept and send messages one at a time. The incoming port closes after a ractor receives a message, eliminating the need for a lock or mutex. Objects are shareable or unshareable, and passing non-shareable objects to a ractor raises a Proc#isolate exception. This is why threads cannot be sent as messages to ractors.