Object-oriented real-time systems: concepts and examples

Bihari, T.E.; Gopinath, P.

doi:10.1109/2.179114

Cited by 41 publications

(12 citation statements)

References 7 publications

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“…In TMO [16] (time triggered and message triggered objects), the model success depends on designers' knowledge of underlying hardware platform. CHAOS [19] does not specify timeliness aspects of real-time system and seems reasonable only for soft-realtime system. Some of the popular tools including Rhapsody, ObjectTime developer, and IBM Rational Rose Real Time provide a framework for analysing the problem space in realtime domain.…”

Section: Object-oriented Modelsmentioning

confidence: 99%

Schedulability Analysis for Rate Monotonic Algorithm-Shortest Job First Using UML-RT

Pushpa

Devasikamani

2014

Modelling and Simulation in Engineering

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System modelling with a unified modelling language (UML) is an active research area for developing real-time system development. UML is widely used modelling language in software engineering community, to specify the requirement, and analyse the target system successfully. UML can be used to provide multiple views of the system under design with the help of a variety of structural and behavioural diagrams at an early stage. UML-RT (unified modelling language-real time) is a language used to build an unambiguous executable specification of a real-time system based on UML concepts. This paper presents a unified modeling approach for a newly proposed rate monotonic scheduling algorithm-shortest job first (RMA-SJF) for partitioned, semipartitioned and global scheduling strategies in multiprocessor architecture using UML-RT for different system loads. As a technical contribution, effective processor utilization of individual processors and success ratio are analyzed for various scheduling principles and compared with EDF and D EDF to validate our proposal.

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Section: Object-oriented Modelsmentioning

confidence: 99%

Schedulability Analysis for Rate Monotonic Algorithm-Shortest Job First Using UML-RT

Pushpa

Devasikamani

2014

Modelling and Simulation in Engineering

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“…Moreover, there is a distinct node "entry" which represents the task root. That is, either (1) v1 is an entry, and v2 is not nested within any loop or conditional, or (2) v1 represents a control predicate, and v2 is immediately within a loop or in conditional whose the predicate is represented by vl. An edge V I -+ v2, denotes a flow, an output or an antidependence.…”

Section: Dependency Representationmentioning

confidence: 99%

“…The computation uniformity model of the objectoriented paradigm allows good real-time entities representation, either that is physical or software [2]. For example, in the manipulator control software, software objects represent the manipulator itself, the actuators, and the conceptual entities for the planner.…”

Section: Real-time Task Modelmentioning

confidence: 99%

Enhancing schedulability: a real-time object slicing approach

Kimour

Bendelloul

Bouras

Proceedings ACS/IEEE International Conference on Computer Systems and Applications

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In the real-time systems, designers typically focus on designing a functionally correct system. They later test it for its timing performance. Therefore, errors due to overloaded resources are exposed very late in the development process, and often at run-time. In this case, there will be many fine tunings and rewrites, making the system increasingly more dij7cult to understand, maintain, and extend. Indeed, in the object-oriented model, developers must retrieve and understand the object interdependency timing behavior, to analyze and rearrange the code. In order to help achieve schedulability, we propose an alternative to this painful process, which extends previous solutions, to deal with the real-time object model. We apply the concept of dependency analysis to the object-oriented model of the real-time task, that we restructure in a way to enhance the global schedulability.

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“…Large, dynamic real−time systems also require complex embedded software, that are difficult to understand, maintain and modify. The 'usual' difficulties presented in building large software and hardware systems are exacerbate in the real−time field, mainly due to the introduction of the additional complexity of time− dependent behavior [4].…”

Section: Introductionmentioning

confidence: 99%

From design to implementation: tool support for the development of object-oriented distributed real-time systems

Becker

Pereira

Proceedings 12th Euromicro Conference on Real-Time Systems. Euromicro RTS 2000

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The increasing complexity in the development of real−time systems leads designers to make use of techniques that help handle the complexity. One method to deal with complexity that became popular in the last years is the use of the object−oriented paradigm. Some advances in hardware technology have made possible to overcome the overhead problems that prevented its adoption in the past. This paper describes an integrated software environment called SiMOO−RT, developed under the context of ADOORATA project (A Distributed Object−Oriented Architecture for Real−Time Automation), a Brazilian−German cooperation that guides designers to explore the whole phases of a real−time software development under the object− oriented paradigm. Here, the main features of the tool are presented and validated through means of a case study, and future directions of the project are highlighted.

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Object-oriented real-time systems: concepts and examples

Cited by 41 publications

References 7 publications

Schedulability Analysis for Rate Monotonic Algorithm-Shortest Job First Using UML-RT

Schedulability Analysis for Rate Monotonic Algorithm-Shortest Job First Using UML-RT

Enhancing schedulability: a real-time object slicing approach

From design to implementation: tool support for the development of object-oriented distributed real-time systems

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