A Reflective Model For Real-Time Applications In Open Distributed Systems

: This paper presents a model for distributed applications with real-time constraints in open systems. The RTR model uses the reflective paradigm, providing realtime scheduling, control of time and synchronization constraints, and exception handling. The model adopts the CORBA standard for open systems to provide remote method calls, and handles timing constraints by using timeouts and deadlines. Therefore, the model ensures an efficient treatment of best-effort policies. Also, a prototype implemented using RTR model is described and a multimedia application is used in the prototype to express the model potentialities for real-time programming. Finally, the main characteristics of the RTR model are compared with other approaches adopted to real-time distributed applications. Keywords: Real-time systems, open systems, reflective paradigm, CORBA. 1. INTRODUCTION Advances in research and development of computer hardware and communication networks are allowing the simultaneous processing o..