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Replication Management in Reliable Real-Time Systems
Ref: HURRAY-TR-0206       Publication Date: 1, Apr, 2004

Abstract:
Building reliable real-time applications on top of Commercial Off-The-Shelf (COTS) components is not a straightforward task. Thus, it is essential to provide a simple and transparent programming model, in order to abstract programmers from the low-level implementation details of distribution and replication. However, the recent trend for incorporating pre-emptive multitasking applications in reliable real-time systems increases its complexity. It is therefore important to provide a transparent programming model so that pre-emptive multitasking applications can be implemented without resorting to simultaneously dealing with both system requirements and distribution and replication issues. The DEAR-COTS (Distributed Embedded ARchitecture using Commercial Off-The-Shelf components) architecture has been proposed as an architecture to support real-time and reliable Distributed Computer-Controlled Systems (DCCS) using COTS components. In DEAR-COTS, the Hard Real-Time Subsystem provides a framework for the development of reliable real-time applications, which are the core of DCCS applications. This paper presents the proposed framework, and demonstrates how it can be used to support the transparent replication of software components.

Luis Miguel Pinho

,

Francisco Vasques

,

Andy Wellings

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