5 Search Results for "Arteca, Ellen"

Document
DOI: 10.4230/LIPIcs.ECOOP.2025.9
Event Race Detection for Node.js Using Delay Injections

Authors: Andre Takeshi Endo and Anders Møller

Published in: LIPIcs, Volume 333, 39th European Conference on Object-Oriented Programming (ECOOP 2025)

Abstract
Node.js is a widely used platform for building JavaScript server-side web applications, desktop applications, and software engineering tools. Its asynchronous execution model is essential for performance, but also gives rise to event races, which cause many subtle bugs that can be hard to detect and reproduce. Current solutions to expose such races are based on modifications of the source code of the Node.js system or on guided executions using complex happens-before modeling. This paper presents a simpler and more effective approach called NACD that works by dynamically instrumenting core asynchronous operations in the Node.js runtime system to inject delays and thereby reveal event race bugs. It consists of a small, robust runtime instrumentation module implemented in JavaScript that is configured by a flexible JSON model of the essential parts of the Node.js API. Experimental results show that NACD can reproduce event race bugs with higher probability and fewer runs than state-of-the-art tools.
Cite as

Andre Takeshi Endo and Anders Møller. Event Race Detection for Node.js Using Delay Injections. In 39th European Conference on Object-Oriented Programming (ECOOP 2025). Leibniz International Proceedings in Informatics (LIPIcs), Volume 333, pp. 9:1-9:28, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2025)

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@InProceedings{endo_et_al:LIPIcs.ECOOP.2025.9,
  author =	{Endo, Andre Takeshi and M{\o}ller, Anders},
  title =	{{Event Race Detection for Node.js  Using Delay Injections}},
  booktitle =	{39th European Conference on Object-Oriented Programming (ECOOP 2025)},
  pages =	{9:1--9:28},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-373-7},
  ISSN =	{1868-8969},
  year =	{2025},
  volume =	{333},
  editor =	{Aldrich, Jonathan and Silva, Alexandra},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.ECOOP.2025.9},
  URN =		{urn:nbn:de:0030-drops-233026},
  doi =		{10.4230/LIPIcs.ECOOP.2025.9},
  annote =	{Keywords: JavaScript, race conditions, flaky tests, event races, callback interleaving}
}
Document
Artifact
DOI: 10.4230/DARTS.7.2.5
Enabling Additional Parallelism in Asynchronous JavaScript Applications (Artifact)

Authors: Ellen Arteca, Frank Tip, and Max Schäfer

Published in: DARTS, Volume 7, Issue 2, Special Issue of the 35th European Conference on Object-Oriented Programming (ECOOP 2021)

Abstract
JavaScript is a single-threaded programming language, so asynchronous programming is practiced out of necessity to ensure that applications remain responsive in the presence of user input or interactions with file systems and networks. However, many JavaScript applications execute in environments that do exhibit concurrency by, e.g., interacting with multiple or concurrent servers, or by using file systems managed by operating systems that support concurrent I/O. In this paper, we demonstrate that JavaScript programmers often schedule asynchronous I/O operations suboptimally, and that reordering such operations may yield significant performance benefits. Concretely, we define a static side-effect analysis that can be used to determine how asynchronous I/O operations can be refactored so that asynchronous I/O-related requests are made as early as possible, and so that the results of these requests are awaited as late as possible. While our static analysis is potentially unsound, we have not encountered any situations where it suggested reorderings that change program behavior. We evaluate the refactoring on 20 applications that perform file- or network-related I/O. For these applications, we observe average speedups ranging between 0.99% and 53.6% for the tests that execute refactored code (8.1% on average).
Cite as

Ellen Arteca, Frank Tip, and Max Schäfer. Enabling Additional Parallelism in Asynchronous JavaScript Applications (Artifact). In Special Issue of the 35th European Conference on Object-Oriented Programming (ECOOP 2021). Dagstuhl Artifacts Series (DARTS), Volume 7, Issue 2, pp. 5:1-5:6, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2021)

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@Article{arteca_et_al:DARTS.7.2.5,
  author =	{Arteca, Ellen and Tip, Frank and Sch\"{a}fer, Max},
  title =	{{Enabling Additional Parallelism in Asynchronous JavaScript Applications (Artifact)}},
  pages =	{5:1--5:6},
  journal =	{Dagstuhl Artifacts Series},
  ISSN =	{2509-8195},
  year =	{2021},
  volume =	{7},
  number =	{2},
  editor =	{Arteca, Ellen and Tip, Frank and Sch\"{a}fer, Max},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DARTS.7.2.5},
  URN =		{urn:nbn:de:0030-drops-140290},
  doi =		{10.4230/DARTS.7.2.5},
  annote =	{Keywords: asynchronous programming, refactoring, side-effect analysis, performance optimization, static analysis, JavaScript}
}
Document
DOI: 10.4230/LIPIcs.ECOOP.2021.7
Enabling Additional Parallelism in Asynchronous JavaScript Applications

Authors: Ellen Arteca, Frank Tip, and Max Schäfer

Published in: LIPIcs, Volume 194, 35th European Conference on Object-Oriented Programming (ECOOP 2021)

Abstract
JavaScript is a single-threaded programming language, so asynchronous programming is practiced out of necessity to ensure that applications remain responsive in the presence of user input or interactions with file systems and networks. However, many JavaScript applications execute in environments that do exhibit concurrency by, e.g., interacting with multiple or concurrent servers, or by using file systems managed by operating systems that support concurrent I/O. In this paper, we demonstrate that JavaScript programmers often schedule asynchronous I/O operations suboptimally, and that reordering such operations may yield significant performance benefits. Concretely, we define a static side-effect analysis that can be used to determine how asynchronous I/O operations can be refactored so that asynchronous I/O-related requests are made as early as possible, and so that the results of these requests are awaited as late as possible. While our static analysis is potentially unsound, we have not encountered any situations where it suggested reorderings that change program behavior. We evaluate the refactoring on 20 applications that perform file- or network-related I/O. For these applications, we observe average speedups ranging between 0.99% and 53.6% for the tests that execute refactored code (8.1% on average).
Cite as

Ellen Arteca, Frank Tip, and Max Schäfer. Enabling Additional Parallelism in Asynchronous JavaScript Applications. In 35th European Conference on Object-Oriented Programming (ECOOP 2021). Leibniz International Proceedings in Informatics (LIPIcs), Volume 194, pp. 7:1-7:28, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2021)

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@InProceedings{arteca_et_al:LIPIcs.ECOOP.2021.7,
  author =	{Arteca, Ellen and Tip, Frank and Sch\"{a}fer, Max},
  title =	{{Enabling Additional Parallelism in Asynchronous JavaScript Applications}},
  booktitle =	{35th European Conference on Object-Oriented Programming (ECOOP 2021)},
  pages =	{7:1--7:28},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-190-0},
  ISSN =	{1868-8969},
  year =	{2021},
  volume =	{194},
  editor =	{M{\o}ller, Anders and Sridharan, Manu},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.ECOOP.2021.7},
  URN =		{urn:nbn:de:0030-drops-140501},
  doi =		{10.4230/LIPIcs.ECOOP.2021.7},
  annote =	{Keywords: asynchronous programming, refactoring, side-effect analysis, performance optimization, static analysis, JavaScript}
}
Document
Artifact
DOI: 10.4230/DARTS.5.2.9
Reasoning About Foreign Function Interfaces Without Modelling the Foreign Language (Artifact)

Authors: Alexi Turcotte, Ellen Arteca, and Gregor Richards

Published in: DARTS, Volume 5, Issue 2, Special Issue of the 33rd European Conference on Object-Oriented Programming (ECOOP 2019)

Abstract
There are two components to this artifact. First, a we provide a mechanization of the formalization in the paper, as well as mechanized proofs of the main results from the paper. Second, we provide a full implementation of Poseidon Lua, the language implemented in the paper. Instructions for all components of the artifact are included this document.
Cite as

Alexi Turcotte, Ellen Arteca, and Gregor Richards. Reasoning About Foreign Function Interfaces Without Modelling the Foreign Language (Artifact). In Special Issue of the 33rd European Conference on Object-Oriented Programming (ECOOP 2019). Dagstuhl Artifacts Series (DARTS), Volume 5, Issue 2, pp. 9:1-9:2, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2019)

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@Article{turcotte_et_al:DARTS.5.2.9,
  author =	{Turcotte, Alexi and Arteca, Ellen and Richards, Gregor},
  title =	{{Reasoning About Foreign Function Interfaces Without Modelling the Foreign Language}},
  pages =	{9:1--9:2},
  journal =	{Dagstuhl Artifacts Series},
  ISSN =	{2509-8195},
  year =	{2019},
  volume =	{5},
  number =	{2},
  editor =	{Turcotte, Alexi and Arteca, Ellen and Richards, Gregor},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DARTS.5.2.9},
  URN =		{urn:nbn:de:0030-drops-107863},
  doi =		{10.4230/DARTS.5.2.9},
  annote =	{Keywords: Language design, Language interoperation, Formal semantics}
}
Document
DOI: 10.4230/LIPIcs.ECOOP.2019.16
Reasoning About Foreign Function Interfaces Without Modelling the Foreign Language

Authors: Alexi Turcotte, Ellen Arteca, and Gregor Richards

Published in: LIPIcs, Volume 134, 33rd European Conference on Object-Oriented Programming (ECOOP 2019)

Abstract
Foreign function interfaces (FFIs) allow programs written in one language (called the host language) to call functions written in another language (called the guest language), and are widespread throughout modern programming languages, with C FFIs being the most prevalent. Unfortunately, reasoning about C FFIs can be very challenging, particularly when using traditional methods which necessitate a full model of the guest language in order to guarantee anything about the whole language. To address this, we propose a framework for defining whole language semantics of FFIs without needing to model the guest language, which makes reasoning about C FFIs feasible. We show that with such a semantics, one can guarantee some form of soundness of the overall language, as well as attribute errors in well-typed host language programs to the guest language. We also present an implementation of this scheme, Poseidon Lua, which shows a speedup over a traditional Lua C FFI.
Cite as

Alexi Turcotte, Ellen Arteca, and Gregor Richards. Reasoning About Foreign Function Interfaces Without Modelling the Foreign Language. In 33rd European Conference on Object-Oriented Programming (ECOOP 2019). Leibniz International Proceedings in Informatics (LIPIcs), Volume 134, pp. 16:1-16:32, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2019)

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@InProceedings{turcotte_et_al:LIPIcs.ECOOP.2019.16,
  author =	{Turcotte, Alexi and Arteca, Ellen and Richards, Gregor},
  title =	{{Reasoning About Foreign Function Interfaces Without Modelling the Foreign Language}},
  booktitle =	{33rd European Conference on Object-Oriented Programming (ECOOP 2019)},
  pages =	{16:1--16:32},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-111-5},
  ISSN =	{1868-8969},
  year =	{2019},
  volume =	{134},
  editor =	{Donaldson, Alastair F.},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.ECOOP.2019.16},
  URN =		{urn:nbn:de:0030-drops-108087},
  doi =		{10.4230/LIPIcs.ECOOP.2019.16},
  annote =	{Keywords: Formal Semantics, Language Interoperation, Lua, C, Foreign Function Interfaces}
}
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