Re: Coroutines in Forth

From	Paul Rubin <no.email@nospam.invalid>
Newsgroups	comp.lang.forth
Subject	Re: Coroutines in Forth
Date	2026-04-04 18:02 -0700
Organization	A noiseless patient Spider
Message-ID	<87cy0eb4od.fsf@nightsong.com> (permalink)
References	(2 earlier) <nnd$3a148ef5$137ee4b5@b1e8191b89e23503> <87wm1gpvdr.fsf@nightsong.com> <nnd$613a150b$00989354@a56038f66d0e5c37> <87bjioptpk.fsf@nightsong.com> <10qmhrc$1csud$1@dont-email.me>

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Gerry Jackson <do-not-use@swldwa.uk> writes:
> Never having looked at coroutines before I tried implementing the
> examples in the above paper. The resulting code is: ...

It would take me a while to understand that, but [:] is cool (I haven't
seen it before), and it lets you do something similar to protothreads.

For coroutines in general you should also read this:

https://doi.org/10.1145/1462166.1462167

It discusses "stackful" coroutines where each coroutine has a separate
call stack that is preserved across coroutine jumps.  It's similar to
Forth's cooperative multitasking.

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EuroForth 2025 preliminary proceedings dxf <dxforth@gmail.com> - 2026-01-15 17:41 +1100
  Re: EuroForth 2025 preliminary proceedings anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2026-01-15 12:04 +0000
    Re: EuroForth 2025 preliminary proceedings Hans Bezemer <the.beez.speaks@gmail.com> - 2026-01-16 15:25 +0100
      Re: EuroForth 2025 preliminary proceedings anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2026-01-16 17:38 +0000
        Re: EuroForth 2025 preliminary proceedings Hans Bezemer <the.beez.speaks@gmail.com> - 2026-01-22 16:51 +0100
          C compiler optimization and Forth engines (was: EuroForth 2025 ...) anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2026-01-24 11:28 +0000
            Re: C compiler optimization and Forth engines (was: EuroForth 2025 ...) anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2026-01-24 16:47 +0000
              Re: C compiler optimization and Forth engines (was: EuroForth 2025 ...) peter <peter.noreply@tin.it> - 2026-01-25 23:31 +0100
                Re: C compiler optimization and Forth engines (was: EuroForth 2025 ...) anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2026-01-26 19:24 +0000
                Re: C compiler optimization and Forth engines (was: EuroForth 2025 ...) peter <peter.noreply@tin.it> - 2026-01-27 15:44 +0100
                Re: C compiler optimization and Forth engines (was: EuroForth 2025 ...) anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2026-01-29 18:27 +0000
                Re: C compiler optimization and Forth engines (was: EuroForth 2025 ...) albert@spenarnc.xs4all.nl - 2026-01-30 13:20 +0100
                Re: C compiler optimization and Forth engines (was: EuroForth 2025 ...) anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2026-01-30 18:00 +0000
      Re: EuroForth 2025 preliminary proceedings Paul Rubin <no.email@nospam.invalid> - 2026-01-16 23:10 -0800
        Re: EuroForth 2025 preliminary proceedings Hans Bezemer <the.beez.speaks@gmail.com> - 2026-01-17 16:58 +0100
          Re: EuroForth 2025 preliminary proceedings Paul Rubin <no.email@nospam.invalid> - 2026-01-17 20:21 -0800
            Re: EuroForth 2025 preliminary proceedings Hans Bezemer <the.beez.speaks@gmail.com> - 2026-01-18 15:26 +0100
          Re: EuroForth 2025 preliminary proceedings anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2026-01-18 22:17 +0000
        Re: EuroForth 2025 preliminary proceedings albert@spenarnc.xs4all.nl - 2026-01-18 16:34 +0100
          Re: EuroForth 2025 preliminary proceedings Paul Rubin <no.email@nospam.invalid> - 2026-01-20 00:35 -0800
            Re: EuroForth 2025 preliminary proceedings albert@spenarnc.xs4all.nl - 2026-01-20 12:12 +0100
            Coroutines in Forth Gerry Jackson <do-not-use@swldwa.uk> - 2026-04-02 20:59 +0100
              Re: Coroutines in Forth Paul Rubin <no.email@nospam.invalid> - 2026-04-04 18:02 -0700
                Re: Coroutines in Forth Paul Rubin <no.email@nospam.invalid> - 2026-04-04 21:21 -0700
        Re: EuroForth 2025 preliminary proceedings peter <peter.noreply@tin.it> - 2026-01-19 23:26 +0100
          Re: EuroForth 2025 preliminary proceedings Paul Rubin <no.email@nospam.invalid> - 2026-01-19 15:22 -0800
            Re: EuroForth 2025 preliminary proceedings peter <peter.noreply@tin.it> - 2026-01-20 10:44 +0100
            Re: EuroForth 2025 preliminary proceedings anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2026-01-20 22:36 +0000
          Re: EuroForth 2025 preliminary proceedings Paul Rubin <no.email@nospam.invalid> - 2026-01-20 00:33 -0800
          Re: EuroForth 2025 preliminary proceedings anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2026-01-20 22:17 +0000

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