Real-Time CORBA Theory and Practice: A Standards-based Approach to the Development of Distributed Real-Time Systems

Embedded systems developers have embraced the Common Object Request Broker Architecture (CORBA) standard as a means for integrating with enterprise systems and supporting network management. Despite the overall popularity of CORBA, it has not been widely used for developing time-critical components of distributed real-time applications. This is because CORBA did not address real-time requirements, leaving it as an exercise to the user or CORBA vendor. In order to extend the benefits of CORBA to real-time systems, the Real-Time CORBA specification was adopted in 1999. This standard tackles the key issue of end-to-end predictability across a CORBA system, and provides its solution in terms of priority control, synchronization, protocol selection and other forms of resource control. This paper reviews the features and use of the Real-Time CORBA specification and provides insight into the future of embedded and Real-Time CORBA standardization from a member of the OMG's Real-Time group.

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