Understanding Basic Behavior of Real−Time Systems Through Object− Oriented Modeling and Simulation

Object−oriented simulation modeling and simulation Psim are presented as a powerful although basic approach to the study (or understanding) of real−time systems. The modeling approach is based on Communicating Real−Time Machines (CRSM). The modeling notation used is the set of extensions to UML (RT−UML) for real−time systems. The object−oriented simulation is the process interaction approach to discrete−event simulation with Psim (a portable set of C++ classes and a set of Java classes). This simulation approach models timing constraints, concurrency and synchronization, in addition to more the more basic expected behavior.