The Cyclic Executive Model and Ada

Periodic processes are major parts of many real-time embedded computer applications. The programming language Ada permits programming simple periodic processes, but it has some serious limitations; producing Ada programs with real-time performance comparable to those produced to date usin traditional cyclic executives requires resorting to tee % * mques that are specific to one machine or compiler. We present and evaluate the cyclic executive model for controlling periodic processes. The features and limitations of Ada for pro ramming cyclic executive software are discussed and % emonstrated, and some practical techniques for circumventing Ada problems are described.