Actor-Based Concurrent Language

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

ABCL/1

ABCL/1 (Actor-Based Concurrent Language) is a 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 objects to achieve concurrency. It requires Common Lisp. Implementations in Kyoto Common Lisp (KCL) and Symbolics Lisp are available from the author.

ABCL/c+

An implementation of ABCL/c+ is available from the ACM.[1]

ABCL/R

ABCL/R is an object-oriented reflective subset of ABCL/1, 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.

Further reading
  • ABCL: An Object-Oriented Concurrent System, 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
gollark: So obviously, since the chance of us *both* just playing on SwitchCraft by random chance are so low, we must be the same.
gollark: I mean, think of how few people play SwitchCraft, out of everyone in the world. The chance of an arbitrary person being on here is probably less than 0.01% or so, right?
gollark: Well, we're quite similar. Our usernames are conveying somewhat related concepts. We live in the UK. We... have Minecraft accounts, are sysadmins ish, play on SwitchCraft, have Grafana installed, etc.
gollark: Actually, I am Lemmmy.
gollark: How do you know that I can't [REDACTED] the ROM, or backdoor the copy you send out?

References
  1. An Implementation of an Operating System Kernel Using Concurrent Object-Oriented Language ABCL/c+
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