Real-Time Systems
A. Burns
The event-triggered (ET) model of computation is presented as a generalization of the time-triggered (TT) approach. It supports hard real-time and flexible soft real-time services. The ET model is built upon a number of key notions: temporal firewalls, controlled objects, temporarily valid state data, and unidirectional communications between isolated subsystems. It uses the producer/consumer rather than client/server model of interaction. In addition to describing a systems model and computation model, this article considers issues of schedulability and fault tolerance. The ET model is not radically different from the TT approach (as in many systems most events will originate from clocks) but it does provide a more appropriate architecture for open adaptive applications.
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BibTex Entry
@incollection{Burns2002,
author = {A. Burns},
booktitle = {Encyclopedia of Physical Science and Technology},
category = {design,scheduling},
pages = {45--54},
publisher = {Academic Press},
title = {Real-Time Systems},
volume = {14},
year = {2002}
}