C++ Reactive Programming

The Active object pattern

An Active object is a class that decouples method invocations and method executions, and is well suited for fire and forget asynchronous calls. A scheduler attached to the class handles the execution requests. The pattern consists of six elements, which are as follows:

• A proxy, which provides an interface for clients with publicly accessible methods
• An interface that defines the method request on an Active object
• A list of pending requests from clients
• A Scheduler, which decides which request to execute next
• The implementation of the Active object method
• A callback or variable, for the client to receive the result

We will dissect an implementation of the Active object pattern. This program is written for elucidation; ...