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URN: urn:nbn:de:0030-drops-24379
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Clarke, David ; Wrigstad, Tobias ; Ostlund, Johan ; Johnsen, Einar Broch

Minimal Ownership for Active Objects

09301.ClarkeDavid.Paper.2437.pdf (0.5 MB)


Active objects offer a structured approach to concurrency, encapsulating both unshared state and a thread of control. For efficient data transfer, data should be passed by reference whenever possible, but this introduces aliasing and undermines the validity of the active objects. This paper proposes a minimal variant of ownership types that preserves the required race freedom invariant yet enables data transfer by reference between active objects (that is, without copying) in many cases, and a cheap clone operation where copying is necessary. Our approach is general and should be adaptable to several existing active object systems.

BibTeX - Entry

  author =	{David Clarke and Tobias Wrigstad and Johan Ostlund and Einar Broch Johnsen},
  title =	{Minimal Ownership for Active Objects},
  booktitle =	{Typing, Analysis and Verification of Heap-Manipulating Programs},
  year =	{2010},
  editor =	{Peter O'Hearn and Arnd Poetzsch-Heffter and Mooly Sagiv},
  number =	{09301},
  series =	{Dagstuhl Seminar Proceedings},
  ISSN =	{1862-4405},
  publisher =	{Schloss Dagstuhl - Leibniz-Zentrum fuer Informatik, Germany},
  address =	{Dagstuhl, Germany},
  URL =		{},
  annote =	{Keywords: Ownership, concurrency, uniqueness, active objects}

Keywords: Ownership, concurrency, uniqueness, active objects
Collection: 09301 - Typing, Analysis and Verification of Heap-Manipulating Programs
Issue Date: 2010
Date of publication: 24.02.2010

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