Designing for concurrency and distribution with Rational Rose RealTime

Garth Gullekson, Consultant, Consultant

Garth Gullekson is an article contributor.

Summary: Real-time embedded systems (such as for e-devices) can use active objects to address problems caused by concurrent threads and the need to make objects easily distributable. This paper explains how.

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Date: 23 Jul 2005 (Published 04 Dec 2003)
Level: Introductory
Activity: 457 views

Embedded systems have their computing power embedded (built into) the system, and thus the processors are typically not directly accessible by the user. Most embedded systems are also real-time. Such software is extremely prevalent in e-infrastructure and e-device development.

Concurrency and distribution are common in real-time embedded software design. Objects are often posed as solutions to these challenges. However, objects don't automatically prevent undesired interaction among concurrent threads of execution, nor do they lend themselves to easy distribution. This paper outlines the challenges of concurrent distributed design and describes how active objects, captured as UML capsules using Rational Rose RealTime, can provide a systematic solution. It concludes with heuristics for identifying and using capsules in design.

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About the author

Garth Gullekson is an article contributor.

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