Lightweight Session Programming in Scala

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Title: Lightweight Session Programming in Scala
Author(s): Scalas, A
Yoshida, N
Item Type: Conference Paper
Abstract: Designing, developing and maintaining concurrent applications is an error-prone and time-consuming task; most difficulties arise because compilers are usually unable to check whether the inputs/outputs performed by a program at runtime will adhere to a given protocol specification. To address this problem, we propose lightweight session programming in Scala: we leverage the native features of the Scala type system and standard library, to introduce (1) a representation of session types as Scala types, and (2) a library, called lchannels, with a convenient API for session-based programming, supporting local and distributed communication. We generalise the idea of Continuation-Passing Style Protocols (CPSPs), studying their formal relationship with session types. We illustrate how session programming can be carried over in Scala: how to formalise a communication protocol, and represent it using Scala classes and lchannels, letting the compiler help spotting protocol violations. We attest the practicality of our approach with a complex use case, and evaluate the performance of lchannels with a series of benchmarks.
Publication Date: 17-Jul-2016
Date of Acceptance: 22-Apr-2016
URI: http://hdl.handle.net/10044/1/41760
DOI: http://dx.doi.org/10.4230/LIPIcs.ECOOP.2016.21
ISBN: 9783959770149
ISSN: 1868-8969
Publisher: Schloss Dagstuhl - Leibniz-Zentrum fuer Informatik
Start Page: 21:1
End Page: 21:28
Journal / Book Title: Leibniz International Proceedings in Informatics, LIPIcs
Volume: 56
Copyright Statement: Licensed under Creative Commons License CC-BY
Sponsor/Funder: Engineering & Physical Science Research Council (E
Engineering & Physical Science Research Council (E
Engineering & Physical Science Research Council (EPSRC)
Commission of the European Communities
Funder's Grant Number: ERI 025567 (EP/K034413/1)
PO 1553380
EP/K011715/1
612985
Conference Name: 30th European Conference on Object-Oriented Programming (ECOOP 2016)
Publication Status: Published
Start Date: 2016-07-17
Finish Date: 2016-07-22
Conference Place: Rome, Italy
Open Access location: http://drops.dagstuhl.de/opus/volltexte/2016/6115/pdf/LIPIcs-ECOOP-2016-21.pdf
Appears in Collections:Computing



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