Abstract
The paper presents the implementation of some of the new Ada 2005 real-time services (“Execution Time Clocks”, “Execution Time Timers”, “Tim ing Events” and “Dynamic Priorities for Protected Objects”) in the MaRTE OS/ GNAT run-time library for GNU/Linux. For each these new services we discuss different implementation alternatives and evaluate they performance. As a con sequence of the results obtained, our view is that the new services can be imple mented in an efficient way in a existing run-time system without requiring major changes. To illustrate the usefulness of the new Ada services, the implementa tion of a complex scheduling policy is described.
This work has been funded by AdaCore, the Comisión Interministerial de Ciencia y Tecnología of the Spanish Government under grant TIN2005-08665-C03-02 (THREAD project) and by the Commission of the European Communities under contract IST-004527 (ARTIST2 Network of Excellence).
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References
Ada Reference Manual, ISO/IEC 8652:2007(E) Ed. 3.
Rivas, M.A., Harbour, M.G.: MaRTE OS: An Ada Kernel for Real-Time Embedded Applications. In: Strohmeier, A., Craeynest, D. (eds.) Reliable Software Technologies – Ada Europe 2001. LNCS, vol. 2043, Springer, Heidelberg (2001)
MaRTE OS home page: http://marte.unican.es/
IEEE Std 1003.1-2003. Information Technology -Portable Operating System Interface (POSIX). Institute of Electrical and electronic Engineers.
Alonso, A., López, R., de la Puente, J.A., Álvarez, B., Iborra, A.: Using Linux and Ada in the development of distributed computer control systems. In: IFAC Conference on New Technologies for Computer Control, NTCC’01, Hong-Kong (November 2001)
Liu, J.W., Lin, K.J., Shih, W.K., Chuang-Shi, A., Chung, J.Y., Zhao, W.: Algorithms for Scheduling Imprecise Computations, May 1991, vol. 24(5). IEEE Computer Society Press, Los Alamitos (1991)
Rivas, M.A., Harbour, M.G.: Evaluation of New POSIX Real-time Operating Systems Services for Small Embedded Platforms. In: ECRTS’03. Proceedings of 15th Euromicro Conference on Real-Time Systems, pp. 161–168. IEEE Computer Society Press, Los Alamitos (2003)
Abeni, L., Buttazzo, G.: Integrating Multimedia Applications in Hard Real-Time Systems. In: Proceedings of the IEEE Real-Time Systems Symposium, Madrid, Spain, December 1998, IEEE Computer Society Press, Los Alamitos (1998)
Real, J., Crespo, A.: Offsets for scheduling mode changes. In: Proceedings of the 13th Euromicro Conference on Real-Time Systems., Delft, The Netherlands, pp. 3–10. IEEE Computer Society Press, Los Alamitos (2001)
Crespo, A., Betoret, P.B., Terrasa, S.: Complex Task Implementation in Ada. In: Strohmeier, A., Craeynest, D. (eds.) Reliable Software Technologies – Ada Europe 2001. LNCS, vol. 2043, pp. 167–178. Springer, Heidelberg (2001)
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Aldea Rivas, M., Ruiz, J.F. (2007). Implementation of New Ada 2005 Real-Time Services in MaRTE OS and GNAT. In: Abdennadher, N., Kordon, F. (eds) Reliable Software Technologies – Ada Europe 2007. Ada-Europe 2007. Lecture Notes in Computer Science, vol 4498. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-73230-3_3
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DOI: https://doi.org/10.1007/978-3-540-73230-3_3
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