2 Search Results for "Leijen, Daan"

Document
DOI: 10.4230/DagRep.8.4.104
Algebraic Effect Handlers go Mainstream (Dagstuhl Seminar 18172)

Authors: Sivaramakrishnan Krishnamoorthy Chandrasekaran, Daan Leijen, Matija Pretnar, and Tom Schrijvers

Published in: Dagstuhl Reports, Volume 8, Issue 4 (2018)

Abstract
Languages like C\#, C++, or JavaScript support complex control flow statements like exception handling, iterators (yield), and even asynchrony (async/await) through special extensions. For exceptions, the runtime needs to be extended with exception handling stack frames. For iterators and asynchrony, the situation is more involved, as the compiler needs to turn regular code into stack restoring state machines. Furthermore, these features need to interact as expected, e.g. finally blocks must not be forgotten in the state machines for iterators. And all of this work needs to be done again for the next control flow abstraction that comes along. Or we can use algebraic effect handlers! This single mechanism generalizes all the control flow abstractions listed above and more, composes freely, has simple operational semantics, and can be efficiently compiled, since there is just one mechanism that needs to be supported well. Handlers allow programmers to keep the code in direct-style, which is easy to reason about, and empower library writers to implement various high-level abstractions without special extensions. The idea of algebraic effects handlers has already been experimented with in the form of small research languages and libraries in several mainstream languages, including OCaml, Haskell, Clojure, and Scala. The next step, and the aim of this seminar, is to seriously consider adoption by mainstream languages including both functional languages such as OCaml or Haskell, as well as languages like JavaScript and the JVM and .NET ecosystems.
Cite as

Sivaramakrishnan Krishnamoorthy Chandrasekaran, Daan Leijen, Matija Pretnar, and Tom Schrijvers. Algebraic Effect Handlers go Mainstream (Dagstuhl Seminar 18172). In Dagstuhl Reports, Volume 8, Issue 4, pp. 104-125, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2018)

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@Article{chandrasekaran_et_al:DagRep.8.4.104,
  author =	{Chandrasekaran, Sivaramakrishnan Krishnamoorthy and Leijen, Daan and Pretnar, Matija and Schrijvers, Tom},
  title =	{{Algebraic Effect Handlers go Mainstream (Dagstuhl Seminar 18172)}},
  pages =	{104--125},
  journal =	{Dagstuhl Reports},
  ISSN =	{2192-5283},
  year =	{2018},
  volume =	{8},
  number =	{4},
  editor =	{Chandrasekaran, Sivaramakrishnan Krishnamoorthy and Leijen, Daan and Pretnar, Matija and Schrijvers, Tom},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/DagRep.8.4.104},
  URN =		{urn:nbn:de:0030-drops-97623},
  doi =		{10.4230/DagRep.8.4.104},
  annote =	{Keywords: algebraic effect handlers, implementation techniques, programming abstractions, programming languages}
}
Document
DOI: 10.4230/LIPIcs.ECOOP.2015.568
Global Sequence Protocol: A Robust Abstraction for Replicated Shared State

Authors: Sebastian Burckhardt, Daan Leijen, Jonathan Protzenko, and Manuel Fähndrich

Published in: LIPIcs, Volume 37, 29th European Conference on Object-Oriented Programming (ECOOP 2015)

Abstract
In the age of cloud-connected mobile devices, users want responsive apps that read and write shared data everywhere, at all times, even if network connections are slow or unavailable. The solution is to replicate data and propagate updates asynchronously. Unfortunately, such mechanisms are notoriously difficult to understand, explain, and implement. To address these challenges, we present GSP (global sequence protocol), an operational model for replicated shared data. GSP is simple and abstract enough to serve as a mental reference model, and offers fine control over the asynchronous update propagation (update transactions, strong synchronization). It abstracts the data model and thus applies both to simple key-value stores, and complex structured data. We then show how to implement GSP robustly on a client-server architecture (masking silent client crashes, server crash-recovery failures, and arbitrary network failures) and efficiently (transmitting and storing minimal information by reducing update sequences).
Cite as

Sebastian Burckhardt, Daan Leijen, Jonathan Protzenko, and Manuel Fähndrich. Global Sequence Protocol: A Robust Abstraction for Replicated Shared State. In 29th European Conference on Object-Oriented Programming (ECOOP 2015). Leibniz International Proceedings in Informatics (LIPIcs), Volume 37, pp. 568-590, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2015)

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@InProceedings{burckhardt_et_al:LIPIcs.ECOOP.2015.568,
  author =	{Burckhardt, Sebastian and Leijen, Daan and Protzenko, Jonathan and F\"{a}hndrich, Manuel},
  title =	{{Global Sequence Protocol: A Robust Abstraction for Replicated Shared State}},
  booktitle =	{29th European Conference on Object-Oriented Programming (ECOOP 2015)},
  pages =	{568--590},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-939897-86-6},
  ISSN =	{1868-8969},
  year =	{2015},
  volume =	{37},
  editor =	{Boyland, John Tang},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.ECOOP.2015.568},
  URN =		{urn:nbn:de:0030-drops-52385},
  doi =		{10.4230/LIPIcs.ECOOP.2015.568},
  annote =	{Keywords: distributed computing, eventual consistency, GSP protocol}
}
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