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An implementation model for time-triggered message-triggered object support mechanisms in CORBA-compliant COTS platforms

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3 Author(s)
Shokri, E. ; SoHaR Inc., Beverly Hills, CA, USA ; Crane, P. ; Kim, K.

Object-oriented analysis and design methodologies have become popular in development of non-real-time business data processing applications. However, conventional object-oriented techniques have had minimal impacts on development of real-time applications mainly because these techniques do not explicitly address key characteristics of real-time systems, in particular timing requirements. The Time-triggered Message-triggered Object (TMO) structuring is in our view the most natural extension of the object-oriented design and implementation techniques which allows the system designer to explicitly specify timing characteristics of data and function components of an object. To facilitate TMO-based design of real-time systems in the most cost-effective manner it is essential to provide execution support mechanisms in well-established commercial software/hardware platforms compliant with industry standards. In this paper, we present an implementation model for TMO support mechanisms in CORBA-compliant commercial-off-the-self (COTS) platforms. We first introduce a natural and simple mapping between TMO's and CORBA objects. Then, we identify the services to be provided by the TMO support subsystem and an efficient way these services should be implemented. The rest of the paper discusses an implementation of the proposed model realized on top of the Windows NT operating system and the Orbix object request

Published in:

Object-Oriented Real-time Distributed Computing, 1998. (ISORC 98) Proceedings. 1998 First International Symposium on

Date of Conference:

20-22 Apr 1998