2 Search Results for "Hu, Raymond"

Document
DOI: 10.4230/DARTS.3.2.3
A Linear Decomposition of Multiparty Sessions for Safe Distributed Programming (Artifact)

Authors: Alceste Scalas, Ornela Dardha, Raymond Hu, and Nobuko Yoshida

Published in: DARTS, Volume 3, Issue 2, Special Issue of the 31st European Conference on Object-Oriented Programming (ECOOP 2017)

Abstract
This artifact contains a version of the Scribble tool that, given a protocol specification with multiple participants, can generate Scala APIs for implementing each participant in a type-safe, protocol-abiding way. Crucially, the API generation leverages a decomposition of the multiparty protocol into type-safe peer-to-peer interactions between pairs of participants; and this, in turn, allows to implement the API internals on top of the existing lchannels library for type-safe binary session programming. As a result, several technically challenging aspects in the implementation of multiparty sessions are solved "for free", at the underlying binary level. This includes distributed multiparty session delegation: this artifact implements it for the first time.
Cite as

Alceste Scalas, Ornela Dardha, Raymond Hu, and Nobuko Yoshida. A Linear Decomposition of Multiparty Sessions for Safe Distributed Programming (Artifact). In Special Issue of the 31st European Conference on Object-Oriented Programming (ECOOP 2017). Dagstuhl Artifacts Series (DARTS), Volume 3, Issue 2, pp. 3:1-3:3, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2017)

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@Article{scalas_et_al:DARTS.3.2.3,
  author =	{Scalas, Alceste and Dardha, Ornela and Hu, Raymond and Yoshida, Nobuko},
  title =	{{A Linear Decomposition of Multiparty Sessions for Safe Distributed Programming (Artifact)}},
  pages =	{3:1--3:3},
  journal =	{Dagstuhl Artifacts Series},
  ISSN =	{2509-8195},
  year =	{2017},
  volume =	{3},
  number =	{2},
  editor =	{Scalas, Alceste and Dardha, Ornela and Hu, Raymond and Yoshida, Nobuko},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/DARTS.3.2.3},
  URN =		{urn:nbn:de:0030-drops-72847},
  doi =		{10.4230/DARTS.3.2.3},
  annote =	{Keywords: process calculi, session types, concurrent programming, Scala}
}
Document
DOI: 10.4230/LIPIcs.ECOOP.2017.24
A Linear Decomposition of Multiparty Sessions for Safe Distributed Programming

Authors: Alceste Scalas, Ornela Dardha, Raymond Hu, and Nobuko Yoshida

Published in: LIPIcs, Volume 74, 31st European Conference on Object-Oriented Programming (ECOOP 2017)

Abstract
Multiparty Session Types (MPST) is a typing discipline for message-passing distributed processes that can ensure properties such as absence of communication errors and deadlocks, and protocol conformance. Can MPST provide a theoretical foundation for concurrent and distributed programming in "mainstream" languages? We address this problem by (1) developing the first encoding of a full-fledged multiparty session pi-calculus into linear pi-calculus, and (2) using the encoding as the foundation of a practical toolchain for safe multiparty programming in Scala. Our encoding is type-preserving and operationally sound and complete. Crucially, it keeps the distributed choreographic nature of MPST, illuminating that the safety properties of multiparty sessions can be precisely represented with a decomposition into binary linear channels. Previous works have only studied the relation between (limited) multiparty and binary sessions via centralised orchestration means. We exploit these results to implement an automated generation of Scala APIs for multiparty sessions, abstracting existing libraries for binary communication channels. This allows multiparty systems to be safely implemented over binary message transports, as commonly found in practice. Our implementation is the first to support distributed multiparty delegation: our encoding yields it for free, via existing mechanisms for binary delegation.
Cite as

Alceste Scalas, Ornela Dardha, Raymond Hu, and Nobuko Yoshida. A Linear Decomposition of Multiparty Sessions for Safe Distributed Programming. In 31st European Conference on Object-Oriented Programming (ECOOP 2017). Leibniz International Proceedings in Informatics (LIPIcs), Volume 74, pp. 24:1-24:31, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2017)

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@InProceedings{scalas_et_al:LIPIcs.ECOOP.2017.24,
  author =	{Scalas, Alceste and Dardha, Ornela and Hu, Raymond and Yoshida, Nobuko},
  title =	{{A Linear Decomposition of Multiparty Sessions for Safe Distributed Programming}},
  booktitle =	{31st European Conference on Object-Oriented Programming (ECOOP 2017)},
  pages =	{24:1--24:31},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-035-4},
  ISSN =	{1868-8969},
  year =	{2017},
  volume =	{74},
  editor =	{M\"{u}ller, Peter},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.ECOOP.2017.24},
  URN =		{urn:nbn:de:0030-drops-72637},
  doi =		{10.4230/LIPIcs.ECOOP.2017.24},
  annote =	{Keywords: process calculi, session types, concurrent programming, Scala}
}
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