A framework for adaptive real-time applications: the declarative real-time OSGi component model
Ning Gui, Vincenzo De Florio, Hong Sun, Chris Blondia

TL;DR
This paper introduces a declarative real-time component model for OSGi, enabling standard management, dynamic adaptation, and real-time guarantees, demonstrated through a prototype with promising performance.
Contribution
It presents the first comprehensive declarative framework for real-time support in OSGi, including contract description, management interface, and runtime control.
Findings
Framework maintains real-time guarantees during runtime changes
Prototype demonstrates good real-time performance
Supports dynamic reconfiguration without contract impairment
Abstract
Nowadays, more and more applications require OSGi to have some form of real-time support, which is currently very limited. The resulting closed-system solutions lack of a standard management scheme which forbids standard, system-wide policies for real-time system's deployment, adaptation, and reconfiguration. In order to tackle this problem, this paper proposes a declarative real-time component model. In this model, the distinguishing real-time contract of each component is declaratively described, and a general component real-time management interface is designed. They are used to maintain an accurate view of existing real-time components' promised contracts. A real-time component runtime service is designed to control the whole lifecycle of the components. By using global information and general control interface, it can adjust the system continue to operate without impairing the…
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Taxonomy
TopicsReal-Time Systems Scheduling · Distributed and Parallel Computing Systems · Software System Performance and Reliability
