Reactor: An Object Behavioral Pattern for Concurrent Event Demultiplexing and Event Handler Dispatching

By: D.C. Schmidt
Published in: PLoPD1
Pages: 529-545
Category: Behavioral, Distributed Systems, Event-Driven Systems

Summary: Support the demultiplexing and dispatching of multiple event handlers triggered concurrently by multiple events, and simplify event-driven applications by integrating the demultiplexing of events and the dispatching of the corresponding event handlers.

Url: http://www.cs.wustl.edu/~schmidt/patterns-ace.html

Pattern: Reactor

Support the demultiplexing and dispatching of multiple event handlers triggered concurrently by multiple events, and simplify event-driven applications by integrating the demultiplexing of events and the dispatching of the corresponding event handlers.

• This pattern provides a Facade [Gamma+95] for event demultiplexing.
• Each virtual method provided by the Event_Handler base class is a Template Method [Gamma+95]
• An event handler may be created using Factory Method [Gamma+95]
• This pattern can demultiplex messages and events that flow through a Pipes & Filters [Buschmann+96] architecture.