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Extending the UML with a Multicast Synchronisation


Rigorous Object-Oriented Methods 2000 (ROOM)

Rigorous Object-Oriented Methods

17 January 2000

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      There are many systems, which need synchronisation between their components. Typical examples are concurrent task synchronisation, or synchronisation of multimedia streams during their transmission and presentation.

      UML (Unified Modelling Language) is a specification language elaborated for object-oriented modelling. The UML enables explicit specification of peer-to-peer synchronisation only. The specific feature of the UML is its extensibility, allowing adaptation of it to a given domain.

      In the paper, a new mechanism for a specification of a multicast synchronisation is presented. First, we extend the UML metamodel by introducing new metaclasses. Next, we define a new stereotype Synchroniser. Synchronisers have instances called synchronisation points. Synchronisation points offer synchronisation services to objects that may use them. The paper describes informally semantics of synchronisation points and demonstrates their expressive power by analysis of three examples.

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      Author and article information

      Computer Science Department, Wroclaw University of Technology

      Wroclaw, Poland
      January 2000
      January 2000
      : 1-12
      © Bogumila Hnatkowska et al. Published by BCS Learning and Development Ltd. Rigorous Object-Oriented Methods 2000

      This work is licensed under a Creative Commons Attribution 4.0 Unported License. To view a copy of this license, visit

      Rigorous Object-Oriented Methods 2000
      York, UK
      17 January 2000
      Electronic Workshops in Computing (eWiC)
      Rigorous Object-Oriented Methods
      Product Information: 1477-9358 BCS Learning & Development
      Self URI (journal page):
      Electronic Workshops in Computing


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