reactor pattern

activate handlers when events occur
allow events from multiple sources
in single threaded process

See D.C. Schmidt, Using Design Patterns to Develop Reusable Object-oriented Communication Software, CACM October '95, 38(10): 65-74

consequences

modularity
configurability of event-driven software
decoupling application-independent mechanisms from application-specific processing policies
improves portability -- abstracts from OS
course grained concurrency control

disadvantages

handlers are not pre-empted
flow of control is event-driven
applications can be hard to debug

applications

(X) Windows, Interviews, hush
Orbacus Omnibroker

related patterns

Observer, Facade, Template Method

[] readme course(s) preface I 1 2 II 3 4 III 5 6 7 IV 8 9 10 V 11 12 afterthought(s) appendix reference(s) example(s) resource(s) _

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reactor pattern

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consequences

disadvantages

applications

related patterns

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