Perl Object Environment: Difference between revisions

Revision as of 15:12, 18 October 2011

Revision as of 11:13, 4 December 2011

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The Running Kernel operates through primordial [[finite state machine]]s constructed from another set of abstractions ruled by the '''POE::Session''' architecture. A POE::Session is almost trivially defined as a map of events to the functions, class [[Method (computer science)|methods]], and/or object methods that handle them. POE::Session objects also contain a storage space shared by all its event handlers, called a [[heap (programming)|heap]]. Any way you slice them the states are solidly identified and clearly defined.

A more featureful [[event handler]] is a POE::Session subclass called '''POE::NFA''' - an event-driven [[Nondeterministic finite state machine|Nondeterministic Finite state Automaton]] (a ''smarter'' finite state machine). This event handler moves from one strictly defined state to another as events, polls, user selections, or other external events require. This [[state machine]] acts to encapsulate a wide range of generic [[event driven]] [[thread (computer science)|thread]]s allowing much tighter tracking along the [[execution path]] than the relatively informal POE::Session.

===The I/O Layer===