Hi !
There is no such possibility yet, you are more than welcome to propose solution that would bring that feature !

In the meantime, I suggest to ensure that you are running the newest fixer under PHP 7+ with caching enabled.

@keradus thanks! Probably php-cs-fixer could adopt in some way after the param fetching the pcntl_fork(). It duplicates the current PHP process into a child, which can then work separately from the parent process. So per process could init a parsing or rules or fixers.
I am actually using PHP 7.1 with caching

I would prefer to use threads instead of processes, using pool pattern and have solution that would provide common interface and hide parallel-implementation thus we rely on same interface regardless parallelization is possible or not.

I would prefer to use threads instead of processes, using pool pattern and have solution that would provide common interface and hide parallel-implementation thus we rely on same interface regardless parallelization is possible or not.

👍 For threads. By parallel implementation, what we really mean is, "concurrent" implementation. Just pointing out this, for when naming of classes happens.

are any of you willing to create POC? if not, I do really doubt that it will happen soon

👍 threads seems more suitable.

I think that the POC could be built around the FixCommand just before to launch the "Runner" class with all the arguments fetched.

Probably the Runner class could be in fact a thread or inherit form a Worker/Thread customized class. So a method like "Divide and Conquer" for "attack" all the files and folders in a directory given (and stop when a file parse is unique as stop condition). So a maximum_threads could be added in configuration per default.

Since pcntl_fork is not enabled in php by default and real multi-threading is mostly never installed i would suggest using proc_open which can spawn other processes which run concurrently. The nicest and easiest way to achieve this is using symfony/process. As a working example i would bring (JakubOnderka/PHP-Parallel-Lint)[https://github.com/JakubOnderka/PHP-Parallel-Lint] into this. I you are interested in a simple task manager: I have contributed long time ago to a project which acts as a process manager: jagandecapri/symfony-parallel-process.

I hope this helps 😉