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Functional Reactive Programming (FRP) is a declarative approach for modeling and building reactive systems. The FRP has been shown to be an expressive formalism for building graphics, robotic, and vision applications. The Priority-based FRP (P-FRP) is a formalism of FRP that allows preemption of execution and guarantees real-time response. Since functional programs cannot maintain state and mutable...
Static timing analysis of a hard real-time application is necessary to ensure that task-level timing deadlines are always met. In many cases, it is preferable to include details about the operating environment to ensure precise timing analysis. However, adding an environment model increases the overall state space being analyzed, which can result in longer analysis time. In this paper, we present...
Component-based development has become more common news than exotic novelty in mainstream industry. Its adoption has accrued high facilitation potential for software reuse and better organization of the product. Surprisingly however, component-oriented approaches have fared far worse in the domain of high-integrity real-time systems. One of the fundamental reasons of this difficulty stems from the...
Component-based development approaches are becoming commonplace in business applications: they must therefore have some merit. In striking contrast to that, their penetration in the industrial practice of high-integrity real-time systems is virtually nil. This oddity needs explaining. In this paper we reflect on the presumed reasons of this situation and elaborate on possible systematic remedies....
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