PSR, for concurrency stuff

Introduction

Interfaces and objects that provides handling for thread-safety, concurrency programming and data sharing all written in PHP-Userland.

If you want to use the library with your application you can install it by adding

{
    "require": {
        "appserver-io-psr/concurrency": "dev-master"
    },
}

to your composer.json and invoke composer update in your project.