CCo
Go-style coroutines in C
Details
- External ID
- 49157992
- Source
- HN
- Company
- —
- Product
- CCo
- Website domain
- github.com
- Launched
- Aug. 3, 2026
- Cohort
- —
- Upvotes
- 5
- Upvotes percentile
- 0.12634408602150538
- Tags
- —
- Fetched at
- Sept. 10, 2026, 5:32 a.m.
- Updated at
- Sept. 10, 2026, 5:32 a.m.
Enrichment
- Theme
- gpu compute and acceleration tools
- Vertical
- Horizontal
- Function
- Dev tools
- Audience
- Developer
- AI stance
- Not AI
- Project type
- Hobby / open-source project
- Normalized one-liner
- coroutine library for c
- Manually corrected
- False
Could you build this?
No Writing a Go-style coroutine library in C requires low-level context switching, architecture-specific assembly (manipulating stack pointers and CPU registers), and custom runtime scheduling.
What it would actually take: The implementation relies on architecture-specific assembly routines (like `setjmp`/`longjmp`, `makecontext`/`swapcontext`, or custom ASM for x86_64/ARM64) to allocate custom stack frames and swap execution contexts cooperatively. It also necessitates building a work-stealing or FIFO scheduler and channel-based synchronization primitives in pure C without data races. This requires specialized systems programming skills in CPU architectures, calling conventions, and concurrency primitives that AI prompts cannot reliably verify.
Discussion
2 comments analyzed.
Competitors mentioned: Go
Concerns raised: Fixed 4KB stack size causes stack overflow risk, Stack exhaustion leads to silent data corruption, Unable to dynamically grow stack like Go coroutines
Feature requests: Dynamic stack allocation with OS virtual memory, Lazy page allocation for stack growth, Sentinel page for stack overflow detection
Competitors
Other products that read as similar to this one — 479 launches clear the similarity bar, closest 8 shown.
Attention rank: #375 of 480 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 276 days after the earliest competitor.
- Runloom · hn · 2026-07-10 · 47 upvotes · similarity 0.73
- A fast, dependency-free traceroute implementation in pure C · hn · 2025-10-31 · 29 upvotes · similarity 0.62
- go-conc-distilled · github · 2026-09-26 · 72 upvotes · similarity 0.51
- X · hn · 2026-06-15 · 5 upvotes · similarity 0.50
- TRiP · hn · 2026-04-30 · 38 upvotes · similarity 0.49
- Katharos Functional programming and CSP-style concurrency for Python · hn · 2026-08-02 · 37 upvotes · similarity 0.48
- helloworld-bruteforced · github · 2026-09-10 · 38 upvotes · similarity 0.48
- Yet another minimal and lightweight terminal multiplexer written in Go. · hn · 2026-08-27 · 35 upvotes · similarity 0.46
Other launches for this product
- No other launches for this product.
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