lf-lang/reactor-c

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A reactor runtime written in C

Stars: 22
Forks: 32
Open beginner issues: 0
Indexed issues: 82
Avg merge: 4d 17h
Merged PRs (30d): 2

Dominant language: C
License: No license data
Last GitHub push: Aug 30, 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

82 open issues indexed

Deployment on transient federates Open

lf-lang/reactor-c#567 · 8 comments · 1 assignee · Opened Mar 9, 2026
Min-spacing violation with update action policy Open

lf-lang/reactor-c#560 · 1 assignee · Opened Feb 12, 2026
Flaky CI tests Open

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

lf-lang/reactor-c#551 · Opened Dec 11, 2025
Refering instantiated reactors from the inherited reactor. Open

bug

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

lf-lang/reactor-c#527 · 10 comments · Opened Apr 28, 2025
Unintended Action Override Open

bug

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

lf-lang/reactor-c#489 · Opened Oct 10, 2024
Program without reactions runs forever on Windows Open

bug windows

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

lf-lang/reactor-c#485 · Opened Sep 29, 2024
GEDF scheduler deadlocks on some systems with decentralized coordination Open

bug

lf-lang/reactor-c#474 · 1 assignee · Opened Aug 2, 2024
Stopping problems with decentralized coordination Open

bug

lf-lang/reactor-c#473 · 1 assignee · Opened Aug 2, 2024
Flaky segfault error Open

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

lf-lang/reactor-c#466 · Opened Jul 11, 2024
Support for nRF52 without soft devices Open

enhancement

lf-lang/reactor-c#460 · 1 assignee · Opened Jul 1, 2024
Memory error in trace buffer initialization Open

bug

lf-lang/reactor-c#451 · 1 comment · 1 assignee · Opened Jun 24, 2024
Prevent spurious wakeups on rp2040 Open

lf-lang/reactor-c#439 · 1 assignee · Opened May 29, 2024
Generalize RP2040 (and in the future, STM32) support to NUM_CORES Open

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

lf-lang/reactor-c#438 · Opened May 26, 2024
Removing barrier synchronization on levels Open

enhancement

lf-lang/reactor-c#434 · 1 assignee · Opened May 22, 2024
What is the correct behavior if a microstep index wraps Open

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

lf-lang/reactor-c#430 · 1 comment · Opened May 16, 2024
GEDF scheduler violates EDF policy Open

bug schedulers

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

lf-lang/reactor-c#426 · 3 comments · Opened May 12, 2024
Decide between HRTT or SRTT on FlexPRET platform Open

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

lf-lang/reactor-c#421 · Opened May 10, 2024
Improving timing precision on Linux Open

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

lf-lang/reactor-c#419 · Opened May 3, 2024
Revisit the binary protocol between RTI and federates Open

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

lf-lang/reactor-c#410 · 5 comments · Opened Apr 8, 2024
Incoming sockets must be completely emptied if the destination is disconnected. Open

federated RTI

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

lf-lang/reactor-c#409 · 2 comments · 1 reaction · Opened Apr 8, 2024
read_from_socket should always retry if it returns with errno=EAGAIN Open

federated RTI

Difficulty 3/5 1-2 days Newbie friendliness 42/100

lf-lang/reactor-c#408 · 2 comments · Opened Apr 8, 2024
Tracer Optimization Proposal Open

enhancement

lf-lang/reactor-c#405 · 1 comment · 1 assignee · Opened Apr 2, 2024
Default ports for federates. Open

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

lf-lang/reactor-c#402 · 1 comment · Opened Mar 26, 2024
Prepend logging prints with the current/elapsed physical time Open

enhancement good first issue

lf-lang/reactor-c#395 · 5 comments · 1 reaction · 1 assignee · Opened Mar 15, 2024
Interrupts may cause deadlocks with threaded runtime Open

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

lf-lang/reactor-c#393 · 3 comments · Opened Mar 14, 2024
Add a reaction_idx field to the tracerecord Open

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

lf-lang/reactor-c#389 · 1 comment · Opened Mar 7, 2024
Implicitly assuming 64bit architecture in pqueue implementation Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

lf-lang/reactor-c#388 · 3 comments · Opened Mar 7, 2024
Version core runtime Open

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

lf-lang/reactor-c#366 · Opened Feb 26, 2024
Establish convention for function naming and enforce it Open

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

lf-lang/reactor-c#363 · 1 comment · Opened Feb 23, 2024
Establish clear separation between public and private interfaces Open

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

lf-lang/reactor-c#362 · Opened Feb 23, 2024
Modularization of reactor-c Open

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

lf-lang/reactor-c#360 · 2 reactions · Opened Feb 22, 2024
Add more unit tests for the RTI Open

good first issue

lf-lang/reactor-c#357 · 1 comment · 1 assignee · Opened Feb 15, 2024
Double `read()`s on `receive_and_check_fed_id_message()` Open

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

lf-lang/reactor-c#338 · 4 comments · Opened Jan 26, 2024
Suspicious setting of port status to absent Open

cleanup

lf-lang/reactor-c#334 · 1 assignee · Opened Jan 21, 2024
Excessive lag Open

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

lf-lang/reactor-c#332 · 17 comments · Opened Jan 19, 2024
Background thread for decentralized execution Open

cleanup federated

lf-lang/reactor-c#329 · 1 reaction · 1 assignee · Opened Jan 13, 2024
Is stop_trace_locked needed? Open

question

Difficulty 4/5 3-5 days Newbie friendliness 25/100

lf-lang/reactor-c#314 · 1 comment · Opened Dec 2, 2023
Have fedsd output an SVG instead of a HTML file wrapping an SVG Open

lf-lang/reactor-c#301 · 1 comment · 1 assignee · Opened Nov 5, 2023
Safely skipping redundant port absent messages in the centralized federated execution Open

lf-lang/reactor-c#295 · 8 comments · 1 assignee · Opened Oct 24, 2023
Tracing: Allow the user to disable System Tracing Open

enhancement

lf-lang/reactor-c#287 · 1 assignee · Opened Oct 6, 2023
A minor issue is that with python 3.11, we get a deprecation warning that should be easy to fix: Open

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

lf-lang/reactor-c#285 · Opened Oct 5, 2023
`trace_to_csv` enhancements Open

community enhancement feature

lf-lang/reactor-c#283 · 1 assignee · Opened Oct 5, 2023
Communication layer abstraction for expanding communication properties. Open

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

lf-lang/reactor-c#281 · 3 comments · Opened Oct 2, 2023
fedsd hardwires python path Open

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

lf-lang/reactor-c#278 · 1 comment · Opened Sep 25, 2023
Add linter and ensure that code is warning-free Open

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

lf-lang/reactor-c#268 · 1 comment · 1 reaction · Opened Sep 1, 2023
Test `fedsd` utility in CI Open

lf-lang/reactor-c#267 · 1 assignee · Opened Sep 1, 2023
Optimizing Centralized Federated Execution Open

enhancement federated

lf-lang/reactor-c#264 · 1 comment · 1 reaction · 1 assignee · Opened Aug 22, 2023
Spurious warning with after delays Open

enhancement

lf-lang/reactor-c#260 · 1 assignee · Opened Aug 16, 2023
Refactor: `federate_thread_TCP` has unefficient read() methods. Open

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

lf-lang/reactor-c#256 · 1 comment · Opened Aug 8, 2023
DEFAULT_MAX_REACTION_LEVEL of 100 is used when the number of levels is unknown Open

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

lf-lang/reactor-c#239 · Opened Jun 14, 2023

lf-lang/reactor-c

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