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Composing Adaptive Distributed Embedded and Real-Time Java Systems Based on RTSJ

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Self-Organization in Embedded Real-Time Systems

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Abstract

Distributed safety-critical systems that must provide continuous service (e.g., air-traffic control systems or enterprise and financial applications) require dynamic updates. Dynamic software modification is a useful capability because the application is able to update it to fix bugs and add new features without requiring a stop and a restart. During the last years (i.e., since 1998) the Java technology has been extended in order to provide the timelines required by embedded real-time distributed systems (i.e., RTSJ, DRTSJ, SCJS). However neither of these Java extensions considers dynamic characteristics allowing the system to be adapted to the changing environment. In this Chapter, we overview Java solutions considering real-time requirements in service-oriented component models allowing dynamic updates (e.g., OSGi).

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Notes

  1. 1.

    This holds even stronger for (hard) real-time systems since the guarantee of real-time behavior can only be given for a concrete hardware platform.

  2. 2.

    Software engineering dealing with software components, reusable software elements with a specification.

  3. 3.

    In the OSGi platform, these transitions are performed automatically.

  4. 4.

    An iPOJO is a runtime service-oriented component model which can be used to develop applications over the OSGi service platform. Besides managing dynamic service interactions iPOJO also provides an extensibility mechanism to manage other non-functional properties as persistency, security, autonomic management, and events.

  5. 5.

    Regular threads allocates objects within the application heap.

  6. 6.

    http://www.aonix.com/pdf/PERC-Raven_e.pdf.

  7. 7.

    PERC Ultra is typically used for large scale applications that need to use the rich features of Standard Edition Java libraries, coupled with predictable performance. PERC Pico is specifically designed for small footprint applications with fast execution, and low level device access, and PERC Ultra SMP, provides solution for multi-core, multi-processor systems.

  8. 8.

    http://ditec.um.es/~dsevilla/ccm/.

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Acknowledgements

This research was supported by Consejería de Educación de la Comunidad de Madrid, Fondo Europeo de Desarrollo Regional (FEDER) and Fondo Social Europeo (FSE), through Research Program S2009/TIC-1468, and by Ministerio de Educación y Ciencia, through the research grant TIN2009-.07146.

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Authors and Affiliations

  1. Universidad Complutense de Madrid, Ciudad Universitaria, Madrid, 28040, Spain

    M. Teresa Higuera-Toledano

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  1. M. Teresa Higuera-Toledano
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Correspondence to M. Teresa Higuera-Toledano .

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Editors and Affiliations

  1. , Facultad de Informática, DACYA, Universidad Complutense de Madrid, Calle del Profesor Gaecía Santesmas, Madrid, 28040, Spain

    M. Teresa Higuera-Toledano

  2. Fachbereich Informatik und Mathematik, Goethe University, Robert Mayer-Straße 11-15, Frankfurt am Main, 60325, Germany

    Uwe Brinkschulte

  3. OFFIS e.V, Carl von Ossietzky University Oldenburg, Escherweg 2, Oldenburg, 26121, Germany

    Achim Rettberg

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Higuera-Toledano, M.T. (2013). Composing Adaptive Distributed Embedded and Real-Time Java Systems Based on RTSJ. In: Higuera-Toledano, M., Brinkschulte, U., Rettberg, A. (eds) Self-Organization in Embedded Real-Time Systems. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-1969-3_7

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  • DOI: https://doi.org/10.1007/978-1-4614-1969-3_7

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