Events and actions: an object-oriented approach to real-time control systems

Abstract

An object-oriented approach is applied throughout the design of a complex real-time control system, from low-level interrupt processing and scheduling to high-level system design and configuration. The concept of events and actions as generalized objects forms the centerpiece of the software architecture. Operations on events and actions are presented, the implementation of these objects with a simple and efficient preemptive scheduler is described, and the construction of a complete system from these objects is discussed. Finally, the object-oriented approach is used to develop a declarative programming language which enables the user to configure real-time systems on the basis of the propagation of events.<>