lf-lang/reactor-uc

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A lightweight reactor runtime targeted at distributed resource-constrained embedded systems

Stars: 20
Forks: 12
Open beginner issues: 0
Indexed issues: 38
Avg merge: 17d 21h
Merged PRs (30d): 1

Dominant language: Java
License: BSD-2-Clause
Last GitHub push: Sep 7, 2026
Latest indexed: Sep 18, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: good first issue help wanted

Beginner friendly Everything

Open All

38 open issues indexed

Extra Timestamping for incoming Messages Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

lf-lang/reactor-uc#408 · Opened Sep 17, 2026
Causality check difference between reactor-uc and VSCode Extension Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

lf-lang/reactor-uc#407 · Opened Sep 11, 2026
Tracing Extension Open

enhancement

lf-lang/reactor-uc#406 · 1 assignee · Opened Sep 10, 2026
Zephyr: physical actions cannot be scheduled from an ISR (k_mutex_lock panics) Open

bug enhancement

Difficulty 4/5 3-5 days Newbie friendliness 48/100

lf-lang/reactor-uc#404 · 2 comments · Opened Sep 8, 2026
Return warning when passing arguments to specify multiport widths / banks Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

lf-lang/reactor-uc#401 · Opened Aug 27, 2026
Compiler always uses default parameters of reactors for the widths of banks and multiports even when overridden Open

bug enhancement help wanted

Difficulty 4/5 3-5 days Newbie friendliness 45/100

lf-lang/reactor-uc#398 · 3 comments · Opened Aug 20, 2026
Too much logging at INFO-level Open

cleanup enhancement good first issue

Difficulty 3/5 1-2 days Newbie friendliness 64/100

lf-lang/reactor-uc#393 · Opened Aug 3, 2026
Compile all federates function for ulfc.cmake Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

lf-lang/reactor-uc#390 · 4 comments · Opened Jul 23, 2026
LF_INFO format/argument mismatch in FederatedInputConnection_prepare prints garbage tags (varargs UB) Open

Difficulty 1/5 Under an hour Newbie friendliness 78/100

lf-lang/reactor-uc#386 · Opened Jul 16, 2026
Federation start-time negotiation completes before initial clock sync; non-grandmaster federate with far-ahead clock bursts through timer events Open

Difficulty 4/5 3-5 days Newbie friendliness 55/100

lf-lang/reactor-uc#385 · Opened Jul 16, 2026
[Zephyr] Kernel panic loop when clock synchronization steps the clock by a large offset (native + Zephyr federation) Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

lf-lang/reactor-uc#384 · Opened Jul 16, 2026
Check if the intended_tag properly propagates to ports Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

lf-lang/reactor-uc#378 · Opened Jun 11, 2026
Handling tardy messages Open

federated

Difficulty 3/5 1-2 days Newbie friendliness 48/100

lf-lang/reactor-uc#373 · 2 comments · Opened Jun 11, 2026
Mysterious failure scheduling an event Open

lf-lang/reactor-uc#370 · 2 comments · 1 assignee · Opened Jun 5, 2026
Compatibility with reactor-c for time functions Open

enhancement good first issue

Difficulty 3/5 1-2 days Newbie friendliness 48/100

lf-lang/reactor-uc#369 · 5 comments · Opened Jun 4, 2026
TSN custom startup coordinator Open

enhancement federated platform

lf-lang/reactor-uc#364 · 1 assignee · Opened May 21, 2026
Idea: 2-wave coordinated shutdown Open

enhancement federated future-work

Difficulty 5/5 Over a week Newbie friendliness 35/100

lf-lang/reactor-uc#361 · Opened May 17, 2026
Check if we can benchmark, coverage, and memory ci pipelines conditionally Open

good first issue

Difficulty 3/5 1-2 days Newbie friendliness 45/100

lf-lang/reactor-uc#360 · Opened May 14, 2026
Remove NumNeighbors from STARTUP macros Open

enhancement good first issue refactoring

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

lf-lang/reactor-uc#359 · Opened May 13, 2026
Intitialization assignments to state variables leads to strange bugs Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 48/100

lf-lang/reactor-uc#348 · Opened Apr 20, 2026
@platform and @platform_riot annotations Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

lf-lang/reactor-uc#345 · Opened Apr 10, 2026
update vscode extension with new annotations. Open

Difficulty 3/5 1-2 days Newbie friendliness 30/100

lf-lang/reactor-uc#344 · Opened Apr 9, 2026
Connection abstraction/library for non-connection oriented communication protocols. Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

lf-lang/reactor-uc#343 · Opened Apr 2, 2026
Performance: Reactor C vs Reactor UC Ping-Pong Benchmark Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 35/100

lf-lang/reactor-uc#340 · 5 comments · Opened Mar 5, 2026
Can the notion of a Reactor Instance in our class hierarchy solve some persistent problems? Open

enhancement help wanted question

Difficulty 5/5 Over a week Newbie friendliness 20/100

lf-lang/reactor-uc#338 · 1 comment · Opened Feb 20, 2026
Reactions with deadlines are not prioritized. Open

enhancement real-time-optimization

Difficulty 4/5 3-5 days Newbie friendliness 30/100

lf-lang/reactor-uc#271 · Opened Apr 3, 2025
Refactor complex functions Open

enhancement good first issue help wanted refactoring

Difficulty 5/5 Over a week Newbie friendliness 25/100

lf-lang/reactor-uc#265 · Opened Apr 1, 2025
Add support for providing your own platform and network channel implementation Open

enhancement platform

Difficulty 5/5 Over a week Newbie friendliness 30/100

lf-lang/reactor-uc#253 · Opened Mar 26, 2025
Exception if trying to compile a program with no main reactor Open

bug good first issue help wanted

Difficulty 3/5 1-2 days Newbie friendliness 35/100

lf-lang/reactor-uc#242 · Opened Mar 10, 2025
Name collisions Open

bug good first issue help wanted

Difficulty 5/5 Over a week Newbie friendliness 30/100

lf-lang/reactor-uc#241 · 2 comments · Opened Mar 10, 2025
Make compilation of different network channels scalable Open

build system

Difficulty 4/5 3-5 days Newbie friendliness 45/100

lf-lang/reactor-uc#188 · Opened Jan 14, 2025
Consider code-generating setter and getter for ports Open

enhancement future-work good first issue help wanted

Difficulty 5/5 Over a week Newbie friendliness 25/100

lf-lang/reactor-uc#165 · Opened Dec 11, 2024
Add support for multiports and banks with widths based on reactor parameters Open

enhancement future-work

Difficulty 5/5 Over a week Newbie friendliness 25/100

lf-lang/reactor-uc#160 · 2 comments · Opened Dec 10, 2024
Add support for bodyless reactions Open

build system enhancement good first issue help wanted

Difficulty 5/5 Over a week Newbie friendliness 25/100

lf-lang/reactor-uc#153 · Opened Dec 4, 2024
Add platform specific unit tests Open

enhancement platform

Difficulty 4/5 3-5 days Newbie friendliness 35/100

lf-lang/reactor-uc#123 · 2 comments · Opened Nov 19, 2024
Enable more strict compiler errors Open

build system enhancement

lf-lang/reactor-uc#105 · 1 assignee · Opened Oct 28, 2024
Avoid booleans as struct fields Open

enhancement future-work memory-optimization

Difficulty 5/5 Over a week Newbie friendliness 25/100

lf-lang/reactor-uc#43 · 3 comments · Opened Oct 7, 2024
Add platform support for Wildcat (RV32I) Open

enhancement good first issue platform

lf-lang/reactor-uc#21 · 1 assignee · Opened Oct 1, 2024

lf-lang/reactor-uc

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