hnes/libaco

Health v2 · maintenance only

Adoption not part of the score

3695 stars · 404 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

libaco is a blazing fast, lightweight C asymmetric coroutine library supporting the Sys V ABI on Intel386 and x86-64. It offers standalone or shared stack coroutines with ~10ns context switches and extreme memory efficiency (10M coroutines in ~2.8GB).

Use cases

• run millions of lightweight coroutines in a C program
• fast cooperative multitasking with minimal context switch overhead
• share stacks across coroutines to save memory
• embed coroutines into a C server or networking application
• learn how a correct and fast coroutine library is implemented

When to choose

• you need production-grade C coroutines on x86/x86-64 with Sys V ABI compliance
• memory efficiency and context switch speed are critical
• you want a tiny dependency-free library under 700 lines of code

When to avoid

• you need portable coroutines beyond Intel386/x86-64 Sys V ABI
• you prefer higher-level async runtimes in languages like Go or Rust
• you need actively developed features - the project is in maintenance mode

Facets

library · maturity maintenance

concurrency developer-tools performance programming-languages cpp c coroutine asymmetric-coroutine shared-stack high-performance sysv-abi lightweight linux

Member repositories

For agents

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