SDL (Specification and Description Language) is a modern, high-level programming language intended for the description of complex, event-driven, real-time and communicating systems. SDL was originally designed to describe performance-critical, real-time systems with precision and accuracy, and, if used correctly, it can significantly enhance the performance of system designs.

This text is unique in the integration between performance and design issues, describing the specific problems encountered when specifying, designing and implementing communication systems with SDL, and...