[1.12] Clearing entities on a separate thread

[AnZaNaMa]

Hi all, I'm working on a little mod akin to the ClearLagg plugin that will automatically clear out entities from time to time. I have seen a couple plugins boasting that they do this on a separate thread to reduce lag, but I'm wondering how this would be possible. It seems like it'd be subject to some hella race conditions.

[Draco18s]

If the command runs on the main thread--where entities are also run--then it can't cause a race condition.

[AnZaNaMa]

Yeah I understand this, but I was just wondering if it was possible cause I've seen plugins claiming they do it - I've already got it working fine on the main thread, but I'm just thinking if it's possible it'd be nice in the case that there are a LOT of entities I need to clear. However, from what I've found in testing it doesn't seem like the amount of time it takes to run is really going to matter. Seems to run just fine.