From: Joe Armstrong
Subject: Re: Question: multi-tasking?
Date: 
Message-ID: <1993Apr21.121800.4135@eua.ericsson.se>
In article <·················@agate.unh.edu>, ···@unh.edu (Roy M. Turner) writes:
|> 
|> Hi folks,
|> 
|> We are getting some Sun SPARC Classic machines to add to our Sun 3's, SPARCs,
|> and DEC MIPS machines, and we're currently trying to make a "which Lisp to
|> use" decision.  One of the things we need is multi-tasking within Lisp--like
|> Symbolics, Lucid, and Allegro support (via "processes"), but that CMU Lisp and
|> AKCL apparently do not.  My question is, does anyone know of a way or have
|> code that implements multi-tasking in a non-multi-tasking Lisp? 

	No But we have a language with inbuilt multi-tasking, error recovery
etc. called Erlang. Erlang has a pattern matching syntax (as loved by
ML and prolog fans) but is untyped (as loved by lisp scheme fans) --
and has a real-time GC. It's a sort of cross between prolog/ML/scheme/lisp/
concurrent euclid ....

	Its also been used for large industrial projects (our biggest
program is 123,000 lines of Erlang).

For more info see.....

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Erlang - "Concurrent Programming in Erlang", J. Armstrong, M. Williams 
& R. Virding, P-H 1993. 

    Classification:  Concurrent  functional programming  language  for
large industrial real-time systems. Untyped.  Pattern matching syntax.
Recursion  equations.    Explicit  concurrency,  asynchronous  message
passing.    Relatively    free   from   side   effects.    Transparent
cross-platform   distribution.   Primitives   for  detecting  run-time
errors.   Real-time GC.   Modules.  Dynamic  code replacement  (change
code  in running real-time system, without stopping  system).  Foreign
language interface.
 
    Availability:  Free version  (subject to  non-commercial  licence)
with  no  support.   Commercial  versions with  support  are available
(Erlang Systems AB).

Info: ······@erix.ericsson.se

FTP Info: euagate.eua.ericsson.se:/pub/eua/erlang/info
 
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	Joe Armstrong