Integrating object-oriented programming and protected objects in Ada 95

  • Authors:

  • A. J. Wellings;B. Johnson;B. Sanden;J. Kienzle;T. Wolf;S. Michell

  • Affiliations:

  • Univ. of York, York, UK;Colorado Technical Univ., Colorado Springs;Colorado Technical Univ., Colorado Springs;Swiss Federal Institute of Technology, Lausanne, Switzerland;Swiss Federal Institute of Technology, Lausanne, Switzerland;Maurya Software, Ottawa, Ont., Canada

  • Venue:
  • ACM Transactions on Programming Languages and Systems (TOPLAS)
  • Year:
  • 2000

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Abstract

Integrating concurrent and object-oriented programming has been an active research topic since the late 1980's. There is a now a plethora of methods for achieving this integration. The majority of approaches have taken a sequential object-oriented language and made it concurrent. A few approaches have taken a concurrent language and made it object-oriented. The most important of this latter class is the Ada 95 language, which is an extension to the object-based concurrent programming language Ada 83. Arguably, Ada 95 does not fully integrate its models of concurrency and object-oriented programming. For example, neither tasks nor protected objects are extensible. This article discusses ways in which protected objects can be made more extensible.