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A programming model for real-time applications in open distributed systems

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4 Author(s)
Fraga, J. ; Dept. de Engenharia Eletrica, Univ. Federal de Santa Catarina, Florianopolis, Brazil ; Farines, J.M. ; Furtado, O. ; Siqueira, F.

This paper presents a model for distributed applications with real-time constraints in an heterogeneous context. The proposed model is based on CORBA standard architecture, and uses the reflective object paradigm which provides the separation of concerns: functionality and management. Consequently, the model has two levels: a base level which deals with system functionality, and a meta level with scheduling, time and synchronization constraints, as well as exception handling. These features are merged in the client/server architecture as defined in the CORBA standard. A timeout value is specified for each client object and a deadline for the server object. These time constraints allow to treat according to a “best-effort” policy the satisfaction of time specifications. After the presentation of the main features of the proposed model a short example based on the display of a multimedia document is described

Published in:

Distributed Computing Systems, 1995., Proceedings of the Fifth IEEE Computer Society Workshop on Future Trends of

Date of Conference:

28-30 Aug 1995