amphp / amphp/parallel

Creation of singletons can cause worker hangs

Open
#215 1 comment 0 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

Dominant language
PHP
Stars
859
Forks
69
PR merge metrics
No merged PRs in 30d

Description

Creating singletons which register watchers inside of workers causes hangs, as the EventLoop::run() block never exits even when a shutdown is triggered.

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by tracing worker singleton initialization and the EventLoop::run() entry point, then reproduce the shutdown path for a singleton that registers watchers. Done means the worker exits cleanly after shutdown instead of hanging, with coverage for this watcher and singleton interaction.

Written by the indexing model from the issue text.

Assessment

Tech stack
php
Domain
distributed-systems
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
35/100

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.