Hello and welcome Alexey!

Le jeu. 6 mai 2021 à 17:32, Alexey Abramov - levenson at mmer.org (via
srfi-discuss list) <xxxxxx@srfi.schemers.org> a écrit :
>
> Hi,
>
> I am new here, but i think https://github.com/wingo/fibers
> can be helpful.

coop is mostly inspired from guile fibers. It covers those part of the manual:

- https://github.com/wingo/fibers/wiki/Manual#22-operations

- https://github.com/wingo/fibers/wiki/Manual#23-channels

Except I renamed them to look more like R7RS.

The rest is very specific to Guile. A work-stealing feature may be
implemented on top of coop, or below coop.

Gambit with the SMP flag turned on implement a similar feature to
work-stealing as far as I understand.

I did not write the full list of references yet.

I did not re-use fibers code, but I did a pull-request with a few comments.

The essential aspect I missed while reading the original CML paper is
that there is a lock shared among all operations that are applied.
Also coop-choice make it looks like operations are nested, but in fact
they are flat (coop-choice some-produce some-consume (coop-choice
some-sleep some-consume2)) is equivalent to (coop-choice some-produce
some-consume some-sleep some-consume2), the order of operations does
not matter, they are tried in some unspecified order, possibly taking
into account priority. fibers and the original CML paper mention
randomization.

coop-wrap and coop-sleep are essential for robust code.