src/game/java/net/minecraft/util/thread/ReentrantBlockableEventLoop.java

package net.minecraft.util.thread;

public abstract class ReentrantBlockableEventLoop<R extends Runnable> extends BlockableEventLoop<R> {
    private int reentrantCount;

    public ReentrantBlockableEventLoop(String p_18765_) {
        super(p_18765_);
    }

    @Override
    public boolean scheduleExecutables() {
        return this.runningTask() || super.scheduleExecutables();
    }

    protected boolean runningTask() {
        return this.reentrantCount != 0;
    }

    @Override
    public void doRunTask(R p_18769_) {
        this.reentrantCount++;

        try {
            super.doRunTask(p_18769_);
        } finally {
            this.reentrantCount--;
        }
    }
}