License: Creative Commons Attribution 4.0 International license (CC BY 4.0)
When quoting this document, please refer to the following
DOI: 10.4230/LIPIcs.ECOOP.2022.26
URN: urn:nbn:de:0030-drops-162544
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Ciccone, Luca ; Dagnino, Francesco ; Padovani, Luca

Fair Termination of Multiparty Sessions

LIPIcs-ECOOP-2022-26.pdf (0.9 MB)


There exists a broad family of multiparty sessions in which the progress of one session participant is not unconditional, but depends on the choices performed by other participants. These sessions fall outside the scope of currently available session type systems that guarantee progress. In this work we propose the first type system ensuring that well-typed multiparty sessions, including those exhibiting the aforementioned dependencies, fairly terminate. Fair termination is termination under a fairness assumption that disregards those interactions deemed unfair and therefore unrealistic. Fair termination, combined with the usual safety properties ensured within sessions, not only is desirable per se, but it entails progress and enables a compositional form of static analysis such that the well-typed composition of fairly terminating sessions results in a fairly terminating program.

BibTeX - Entry

  author =	{Ciccone, Luca and Dagnino, Francesco and Padovani, Luca},
  title =	{{Fair Termination of Multiparty Sessions}},
  booktitle =	{36th European Conference on Object-Oriented Programming (ECOOP 2022)},
  pages =	{26:1--26:26},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-225-9},
  ISSN =	{1868-8969},
  year =	{2022},
  volume =	{222},
  editor =	{Ali, Karim and Vitek, Jan},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{},
  URN =		{urn:nbn:de:0030-drops-162544},
  doi =		{10.4230/LIPIcs.ECOOP.2022.26},
  annote =	{Keywords: Multiparty sessions, fair termination, fair subtyping, deadlock freedom}

Keywords: Multiparty sessions, fair termination, fair subtyping, deadlock freedom
Collection: 36th European Conference on Object-Oriented Programming (ECOOP 2022)
Issue Date: 2022
Date of publication: 23.06.2022

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