Progress of Concurrent Objects
Progress of Concurrent Objects

Author: Hongjin Liang

Publisher: Now Publishers

Published: 2020-05-18

Total Pages: 146

ISBN-13: 9781680836721

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Implementations of concurrent objects in programming languages should guarantee linearizability and a progress property. These progress properties describe conditions under which a method call is guaranteed to complete. However, they fail to describe how clients are affected, making it difficult to utilize them in layered and modular program verification. Even worse, none of the existing results applies to concurrent objects with partial methods. Progress of Concurrent Objects examines the progress properties of concurrent objects. It formulates each progress property in terms of contextual refinement so that, when verifying clients of the objects, concrete object implementations can be replaced with their abstractions with certainty, achieving modular verification. For concurrent objects with partial methods, two new progress properties, partial starvation-freedom (PSF) and partial deadlock-freedom (PDF) are described. Finally, a rely-guarantee style program logic LiLi for verifying linearizability and progress together for concurrent objects is introduced. This tutorial is intended for use by researchers and students. It surveys the current state of the topic and introduces the reader to recent advances in a tutorial style that makes the topic accessible to newcomers to the field.

Concurrent Objects and Beyond
Concurrent Objects and Beyond

Author: Gul Agha

Publisher: Springer

Published: 2014-09-09

Total Pages: 479

ISBN-13: 3662444712

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This Festschrift volume includes a collection of papers written in honor of the accomplishments of Professor Yonezawa on the occasion of his 65th birthday in 2012. With a few exceptions, the papers in this Festschrift were presented at an international symposium celebrating this occasion. Also included are reprints of two of Professor Yonezawa's most influential papers on the programming language ABCL. The volume is a testament strong and lasting impact Professor Yonezawa's research accomplishments as well as the inspiration he has been to colleagues and students alike.

Concurrent Programming: Algorithms, Principles, and Foundations
Concurrent Programming: Algorithms, Principles, and Foundations

Author: Michel Raynal

Publisher: Springer Science & Business Media

Published: 2012-12-30

Total Pages: 530

ISBN-13: 3642320279

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This book is devoted to the most difficult part of concurrent programming, namely synchronization concepts, techniques and principles when the cooperating entities are asynchronous, communicate through a shared memory, and may experience failures. Synchronization is no longer a set of tricks but, due to research results in recent decades, it relies today on sane scientific foundations as explained in this book. In this book the author explains synchronization and the implementation of concurrent objects, presenting in a uniform and comprehensive way the major theoretical and practical results of the past 30 years. Among the key features of the book are a new look at lock-based synchronization (mutual exclusion, semaphores, monitors, path expressions); an introduction to the atomicity consistency criterion and its properties and a specific chapter on transactional memory; an introduction to mutex-freedom and associated progress conditions such as obstruction-freedom and wait-freedom; a presentation of Lamport's hierarchy of safe, regular and atomic registers and associated wait-free constructions; a description of numerous wait-free constructions of concurrent objects (queues, stacks, weak counters, snapshot objects, renaming objects, etc.); a presentation of the computability power of concurrent objects including the notions of universal construction, consensus number and the associated Herlihy's hierarchy; and a survey of failure detector-based constructions of consensus objects. The book is suitable for advanced undergraduate students and graduate students in computer science or computer engineering, graduate students in mathematics interested in the foundations of process synchronization, and practitioners and engineers who need to produce correct concurrent software. The reader should have a basic knowledge of algorithms and operating systems.

Concurrent Crash-Prone Shared Memory Systems
Concurrent Crash-Prone Shared Memory Systems

Author: Michel Raynal

Publisher: Morgan & Claypool Publishers

Published: 2022-03-22

Total Pages: 139

ISBN-13: 1636393306

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Theory is what remains true when technology is changing. So, it is important to know and master the basic concepts and the theoretical tools that underlie the design of the systems we are using today and the systems we will use tomorrow. This means that, given a computing model, we need to know what can be done and what cannot be done in that model. Considering systems built on top of an asynchronous read/write shared memory prone to process crashes, this monograph presents and develops the fundamental notions that are universal constructions, consensus numbers, distributed recursivity, power of the BG simulation, and what can be done when one has to cope with process anonymity and/or memory anonymity. Numerous distributed algorithms are presented, the aim of which is being to help the reader better understand the power and the subtleties of the notions that are presented. In addition, the reader can appreciate the simplicity and beauty of some of these algorithms.

Objects for Concurrent Constraint Programming
Objects for Concurrent Constraint Programming

Author: Martin Henz

Publisher: Springer Science & Business Media

Published: 1997-10-31

Total Pages: 198

ISBN-13: 9780792380382

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Concurrent constraint programming (ccp) is a recent development in programming language design. Its central contribution is the notion of partial information provided by a shared constraint store. This constraint store serves as a communication medium between concurrent threads of control and as a vehicle for their synchronization. Objects for Concurrent Constraint Programming analyzes the possibility of supporting object-oriented programming in ccp. Starting from established approaches, the book covers various object models and discusses their properties. Small Oz, a sublanguage of the ccp language Oz, is used as a model language for this analysis. This book presents a general-purpose object system for Small Oz and describes its implementation and expressivity for concurrent computation. Objects for Concurrent Constraint Programming is written for programming language researchers with an interest in programming language aspects of concurrency, object-oriented programming, or constraint programming. Programming language implementors will benefit from the rigorous treatment of the efficient implementation of Small Oz. Oz programmers will get a first-hand view of the design decisions that lie behind the Oz object system.

Object-Based Concurrent Computing
Object-Based Concurrent Computing

Author: Mario Tokoro

Publisher: Springer Science & Business Media

Published: 1992-06-16

Total Pages: 280

ISBN-13: 9783540556138

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The ECOOP '91 Workshop on Object-Based Concurrent Computing was organized toprovide a forum on concurrent, distributed and open-ended computing. The emphasis was on conceptual, theoretical and formal aspects, as well as practical aspects and sound experience, since such a viewpoint was deemed indispensible to investigate and establish a basis for future development. This volume contains 12 papers selected from 25 presented at the workshop, together with a paper by J.A. Goguen, who was an invited speaker at the workshop. The papers are classified into four categories: Formal methods (1): three papers are concerned with the formal semantics of concurrent objects based on process calculi. Formal methods (2): four papers are concerned with various formal approaches to the semantics of concurrent programs. Concurrent programming: three papers. Models: three papers areconcerned with models for concurrent systems.

Start Concurrent
Start Concurrent

Author: Barry Wittman

Publisher: Purdue University Press

Published: 2013-12-31

Total Pages: 598

ISBN-13: 1626710104

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Multicore microprocessors are now at the heart of nearly all desktop and laptop computers. While these chips offer exciting opportunities for the creation of newer and faster applications, they also challenge students and educators. How can the new generation of computer scientists growing up with multicore chips learn to program applications that exploit this latent processing power? This unique book is an attempt to introduce concurrent programming to first-year computer science students, much earlier than most competing products. This book assumes no programming background but offers a broad coverage of Java. It includes over 150 numbered and numerous inline examples as well as more than 300 exercises categorized as "conceptual," "programming," and "experiments." The problem-oriented approach presents a problem, explains supporting concepts, outlines necessary syntax, and finally provides its solution. All programs in the book are available for download and experimentation. A substantial index of at least 5000 entries makes it easy for readers to locate relevant information. In a fast-changing field, this book is continually updated and refined. The 2014 version is the seventh "draft edition" of this volume, and features numerous revisions based on student feedback. A list of errata for this version can be found on the Purdue University Department of Computer Science website.

Concurrent Object-Oriented Programming and Petri Nets
Concurrent Object-Oriented Programming and Petri Nets

Author: Gul A. Agha

Publisher: Springer

Published: 2003-06-29

Total Pages: 548

ISBN-13: 3540453970

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Concurrency and distribution have become the dominant paradigm and concern in computer science. Despite the fact that much of the early research in object-oriented programming focused on sequential systems, objects are a natural unit of distribution and concurrency - as elucidated early on by research on the Actor model. Thus, models and theories of concurrency, the oldest one being Petri nets, and their relation to objects are an attractive topic of study. This book presents state-of-the-art results on Petri nets and concurrent object-oriented programming in a coherent and competent way. The 24 thoroughly reviewed and revised papers are organized in three sections. The first consists of long papers, each presenting a detailed approach to integrating Petri nets and object-orientation. Section II includes shorter papers with emphasis on concrete examples to demonstrate the approach. Finally, section III is devoted to papers which significantly build on the Actor model of computation.

Pattern-Oriented Software Architecture, Patterns for Concurrent and Networked Objects
Pattern-Oriented Software Architecture, Patterns for Concurrent and Networked Objects

Author: Douglas C. Schmidt

Publisher: John Wiley & Sons

Published: 2013-04-22

Total Pages: 900

ISBN-13: 1118725174

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Designing application and middleware software to run in concurrent and networked environments is a significant challenge to software developers. The patterns catalogued in this second volume of Pattern-Oriented Software Architectures (POSA) form the basis of a pattern language that addresses issues associated with concurrency and networking. The book presents 17 interrelated patterns ranging from idioms through architectural designs. They cover core elements of building concurrent and network systems: service access and configuration, event handling, synchronization, and concurrency. All patterns present extensive examples and known uses in multiple programming languages, including C++, C, and Java. The book can be used to tackle specific software development problems or read from cover to cover to provide a fundamental understanding of the best practices for constructing concurrent and networked applications and middleware. About the Authors This book has been written by the award winning team responsible for the first POSA volume "A System of Patterns", joined in this volume by Douglas C. Schmidt from University of California, Irvine (UCI), USA. Visit our Web Page