Chapter 4

MARTE Foundations

Modeling Time and Resources

As one might expect, time is a central focus of most real-time systems. UML, however, provides a very abstract and highly idealized model of time; it does not even define a basic quantifiable unit of physical time. MARTE compensates for this by providing a very rich set of capabilities for modeling time, including both logical and metric time. Hence, the notion of time and corresponding timing mechanisms can be made as explicit and as concrete as necessary. This chapter explains the different capabilities for representing time provided by MARTE. In the same spirit of connecting the logical world of software with the physical world that is the domain of real-time systems, the second major ...

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