Actor-Based Concurrent Language: Difference between revisions

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'''Actor-Based Concurrent Language''' ('''ABCL''') is a family of Actor-Based Concurrent[[programming Languageslanguage]]s, developed in [[Japan]] in the 1980s and 1990s.

==ABCL/1==

''ABCL/1'' (Actor-Based Concurrent Language) is a [[prototype-based (programming)|prototype-based]] [[concurrent programming language]] for the '''ABCL MIMD''' system, created in 1986 by [[Akinori Yonezawa]], of the ''Department of Information Science'' at the [[University of Tokyo]].

ABCL/1 uses [[asynchronous]] [[message passing]] among [[object (programming)|objects]] to achieve concurrency. It requires [[Common Lisp]]. Implementations in [[Kyoto Common Lisp|KCL]] (KCL) and [[Symbolics]] Lisp are available from the author.

===ABCL/R===

''ABCL/R'' is aan [[Reflectionobject-oriented]] [[reflection (computer science)|reflective]] subset of the [[ABCL/1 programming language]], written by Professor [[Akinori Yonezawa]] of [[Tokyo Institute of Technology]] in 1988.

====ABCL/R2====

''ABCL/R2'' is a second generation version of ABCL/R, designed for the Hybrid Group Architecture. It was produced at the Tokyo Institute of Technology in 1992, and has almost all the functionality of ABCL/1. It is written in [[Common Lisp]]. As a reflective language, its programs can dynamically control their behavior, including scheduling policy, from within a user-process context.

''ABCL/R2'' is a second generation version of the [[object-oriented]] [[Reflection (computer science)|reflective]] [[concurrent programming language]] [[ABCL/R]], designed for the [[Hybrid Group Architecture]].

===ABCL/c+===

ABCL/R2 was produced by at the [[Tokyo Institute of Technology]] in 1992, and has almost all the functionality of [[ABCL/1]]. It is written in [[Common Lisp]].

''ABCL/c+'' is an [[object-oriented]] [[concurrent programming language]], a variationvariant of [[ABCL/1]] based on [[C (programming language)|C]] instead of [[LISPLisp (programming language)|Lisp]].

Since ABCL/R2 is a reflective language, ABCL/R2 programs can dynamically control their behaviour, including scheduling policy, from within a user-process context.

==ABCL/c+==

''ABCL/c+'' is an [[object-oriented]] [[concurrent programming language]], a variation of [[ABCL/1]] based on [[C (programming language)|C]] instead of [[LISP]].

==References==

*''ABCL: An Object-Oriented Concurrent System'', [[Akinori Yonezawa|A. Yonezawa]] ed, MIT Press 1990

*''Reflection in an Object-Oriented Concurrent Language'', T. Watanabe et al., SIGPLAN Notices 23(11):306-315 (Nov 1988)

*''An Implementation of An Operating System Kernel using Concurrent Object Oriented Language ABCL/c+'', N. Doi et al. in ECOOP '88, S. Gjessing et al. eds, LNCS 322, Springer 1988

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==External links==

* [{{official website|http://web.ylvenus.is.s.u-tokyo.ac.jp/pl/abcl.html The ABCL family of languages]}}

[[Category:Prototype-based programming languages]]

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[[Category:Lisp programming language family]]

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[[fr:ABCL/1]]