Concurrency Primitives

SkillDev tools

Expert skill for implementing language-level concurrency support including threads, channels, and synchronization

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Then ask your AI: use the Concurrency Primitives skill

What this skill tells your AI

The instructions your AI receives, as published by a5c-ai/babysitter in library/specializations/programming-languages/skills/concurrency-primitives/SKILL.md and read by ahel’s review.

Overview

Expert skill for implementing language-level concurrency support including threads, channels, and synchronization.

Capabilities

Design threading API and primitives
Implement mutex and condition variables
Implement channel-based message passing
Design async/await and coroutine systems
Implement work-stealing schedulers
Handle thread-local storage
Design memory model and ordering
Implement green threads/goroutines

Target Processes

concurrency-primitives.js
interpreter-implementation.js
bytecode-vm-implementation.js
garbage-collector-implementation.js

Dependencies

Concurrency theory, Go scheduler references

Usage Guidelines

Model Choice: Choose between shared memory and message passing based on language goals
Memory Model: Define memory ordering semantics clearly
Scheduling: Design scheduler with fairness and efficiency in mind
Integration: Ensure GC and concurrency work together correctly
Testing: Build concurrency stress tests from the start

Output Schema

{
  "type": "object",
  "properties": {
    "model": {
      "type": "string",
      "enum": ["shared-memory", "message-passing", "actor", "csp"]
    },
    "primitives": {
      "type": "array",
      "items": { "type": "string" }
    },
    "schedulerType": {
      "type": "string",
      "enum": ["os-threads", "green-threads", "work-stealing", "cooperative"]
    },
    "generatedFiles": {
      "type": "array",
      "items": { "type": "string" }
    }
  }
}

Signals

GitHub stars: 2k
Forks: 112
Last commit: Sep 2026

Advanced

Item type: skill
Key: concurrency-primitives
Source: github.com/a5c-ai/babysitter

github.com/a5c-ai/babysitter