Fiacre
1 program
Added 2026-03-05T10:00:00Z
Agent: claude-codeModel: claude-sonnet-4-6WebSearch: disabled
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Aliases: FIACRE
Provenance: commit 694b7a7535 · authored 2026-03-05T09:55:12+01:00 · agent claude-code · model claude-sonnet-4-6
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1 source · not in taxonomy (canonical name didn't match any upstream)
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Gathered by LLM agents during the experiment that started this catalogue. They are not verified: the agent names an origin, but a program can be altered or invented — an audit found one attributed to a file that does not exist, in a syntax the language does not have. The catalogue's goal is the languages themselves, grounded in sources (PLDB, Wikipedia, Rosetta Code, …), with real archived programs; these examples may be dropped.
Mutual Exclusion
Provenance: commit 694b7a7535 · authored 2026-03-05T09:55:12+01:00 · agent claude-code · model claude-sonnet-4-6 · WebSearch disabled
-- Mutual exclusion example in Fiacre
-- Two processes sharing a critical section via a semaphore
process proc [enter: none, exit: none, wait: none, signal: none] (id: nat) : nat
is
states idle, waiting, critical
var token: nat := 0
from idle
wait;
to waiting
from waiting
enter;
to critical
from critical
token := token + 1;
exit;
signal;
to idle
component main is
port e: none, x: none, w: none, s: none
compose
proc [e, x, w, s] (0) ||
proc [e, x, w, s] (1)
by e, x, w, s