Abstract:

In research communities it is now well-accepted that the object paradigm
provides a good foundation for the challenges of concurrent and distributed
computing. For practitioners, however, it is not without problems to combine
the concepts of processes and objects. A major reason for this is that the
predominant object-oriented programming language in industry, C++, does
not support concurrency.

In this paper we present a simple and powerful approach to extending
C++ with constructs for concurrent programming. We discuss the design,
application, and implementation of a framework that supports standard
concurrency constructs and, contrary to what is suggested in several books
on object-oriented modeling techniques for real-time systems, we demonstrate
that it is possible to integrate the notions of object and process and
maintain
a smooth –virtually non-existing– transition from modeling to
implemen-tation.

The framework has been used at Bang & Olufsen, a major Danish manu-facturer
of audio and video equipment, to develop software for a CD player;
we illustrate the strength of the approach with examples from this project.
As
a pleasant side benefit, the framework approach results in a considerable
reduction of the code size of more than 50% compared to earlier versions of
the system.


Filen ligger som ~jlk/COT-2-16-2.0.pdf


--- jlk