Object-Based Models and Languages for Concurrent Systems


Book Description

This volume presents carefully refereed versions of the best papers presented at the Workshop on Models and Languages for Coordination of Parallelism and Distribution, held during ECOOP '94 in Bologna, Italy in July 1994. Recently a new class of models and languages for distributed and parallel programming has evolved; all these models share a few basic concepts: simple features for data description and a small number of mechanisms for coordinating the work of agents in a distributed setting. This volume demonstrates that integrating such features with those known from concurrent object-oriented programming is very promising with regard to language support for distribution and software composition.







Object-Based Concurrent Computing


Book Description

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.




Objects for Concurrent Constraint Programming


Book Description

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-oriented Concurrent Programming


Book Description

This book deals with a major theme of the Japanese Fifth Generation Project, which emphasizes logic programming, parallelism, and distributed systems. It presents a collection of tutorials and research papers on a new programming and design methodology in which the system to be constructed is modeled as a collection of abstract entities called "objects" and concurrent messages passing among objects. This methodology is particularly powerful in exploiting as well as harnessing the parallelism that is naturally found in problem domains. The book includes several proposals for programming languages that support this methodology, as well as the applications of object-oriented concurrent programming to such diverse areas as artificial intelligence, software engineering, music synthesis, office information systems, and system programming. It is the first compilation of research results in this rapidly emerging area. Contents:Concurrent Programming Using Actors. Concurrent Object-Oriented Programming in Act-1. Modelling and Programming in a Concurrent Object-Oriented Language, ABCL/1. Concurrent Programming in ConcurrentSmallTalk. Orient84K: An Object-Oriented Concurrent Programming Language for Knowledge Representation. POOL-T: A Parallel Object-Oriented Programming Language. Concurrent Strategy Execution in Omega. The Formes System: A Musical Application of Object-Oriented Concurrent Programming. Distributed Problem Solving in ABCL/1. The contributors are Gul Agha (MIT), Pierre America (Phillips Research Laboratory, Eindhoven), Giuseppe Attardi (DELPHI SpA), Jean Pierre Briot (IRCAM, Paris), Pierre Cointe (IRCAM, Paris), Carl Hewitt (MIT), Yutaka Ishikawa (Keio University), Henry Lieberman (MIT), Etsuya Shibayama (Tokyo Institute of Technology), Mario Tokoro (Keio University), Yasuhiko Yokote (Keio University), and Akinori Yonezawa (Tokyo Institute of Technology). Object-Oriented Concurrent Programmingis included in The MIT Press Series in Artificial Intelligence, edited by Patrick Henry Winston and Michael Brady.










Object-Based Parallel and Distributed Computation


Book Description

This book contains a refereed collection of revised papers selected from the presentations at the France-Japan Workshop on Object-Based Parallel and Distributed Computation, OBPDC'95, held in Tokyo in June 1995. The 18 full papers included in the book constitute a representative, well-balanced set of timely research contributions to the growing field of object-based concurrent computing. The volume is organized in sections on massively parallel programming languages, distributed programming languages, formalisms, distributed operating systems, dependable distributed computing, and software management.




Concurrent Object-Oriented Programming and Petri Nets


Book Description

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.




Coordination of Internet Agents


Book Description

The Internet confronts IT researchers, system designers, and application developers with completely new challenges and, as a fascinating new computing paradigm, agent technology has recently attracted broad interest and strong hopes for shaping the future information society. This monograph-like anthology is the first systematic guide to models and enabling technologies for the coordination of intelligent agents on the Internet and respective applications.