concurrencykit/ck
Concurrency primitives, safe memory reclamation mechanisms and non-blocking (including lock-free) data structures designed to aid in the research, design and implementation of high performance concurrent systems developed in C99+. observed · 2026-08-28
Health v2 · maintenance only
66/100
- Activity 97
- Release rhythm 8
- Longevity 100
Flags: no_license
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 4521
- days_rel: n/a
- days_push: 23
- n_releases_24m: 0
Adoption not part of the score
2690 stars · 334 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
Concurrency Kit (ck) is a C99 library providing concurrency primitives, safe memory reclamation mechanisms (epoch-based and hazard pointers), and non-blocking/lock-free data structures. It includes architecture-specific assembly optimizations for many platforms with compiler built-in fallbacks.
Use cases
- implement lock-free queues in C
- safe memory reclamation for concurrent data structures
- atomic operations and CAS primitives across architectures
- build high-performance concurrent systems
- concurrent bitmap and pointer array structures
- research non-blocking algorithms
When to choose
- writing performance-critical C/C++ concurrent code needing lock-free structures
- you need battle-tested safe memory reclamation (epoch or hazard pointers)
- targeting multiple architectures with specialized assembly support
When to avoid
- you want a high-level threading API with locks and thread pools
- working in a managed language with garbage collection
- your project is not in C99+ or lacks a configure-based build
Facets
library · maturity stable
concurrency developer-tools performance developer-tools operating-systems windows bsd cpp c cross-platform lock-free memory-reclamation hazard-pointers epoch-based-reclamation atomic-operations c99 high-performance data-structures algorithms linux macos
2 sources
- readme: https://github.com/concurrencykit/ck · fetched 2026-08-28 · 7f8fb20fc31e
- homepage: http://concurrencykit.org/ · fetched 2026-08-29 · 956b7880c945
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| concurrencykit/ck | main | 66 |
For agents
markdown · JSON · MCP: product_card(name="concurrencykit/ck")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem