Folia/patches/server/0011-fixup-Increase-parallelism-for-neighbour-writing-chu.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Spottedleaf <Spottedleaf@users.noreply.github.com>
Date: Sun, 12 Mar 2023 00:14:32 -0800
Subject: [PATCH] fixup! Increase parallelism for neighbour writing chunk
 statuses


diff --git a/src/main/java/io/papermc/paper/chunk/system/scheduling/queue/RadiusAwarePrioritisedExecutor.java b/src/main/java/io/papermc/paper/chunk/system/scheduling/queue/RadiusAwarePrioritisedExecutor.java
index 6648f8cc5c1788ec02a3adbb68cf126372017dd3..1c8e05d5dde630fdee01900823d26c293f375abc 100644
--- a/src/main/java/io/papermc/paper/chunk/system/scheduling/queue/RadiusAwarePrioritisedExecutor.java
+++ b/src/main/java/io/papermc/paper/chunk/system/scheduling/queue/RadiusAwarePrioritisedExecutor.java
@@ -351,8 +351,6 @@ public class RadiusAwarePrioritisedExecutor {
                 return null;
             }
 
-            ++this.currentlyExecuting;
-
             // firstAwaiting compared to firstInfinite
             final int compare;
 
@@ -367,10 +365,16 @@ public class RadiusAwarePrioritisedExecutor {
             }
 
             if (compare >= 0) {
+                if (this.currentlyExecuting != 0) {
+                    // don't queue infinite task while other tasks are executing in parallel
+                    return null;
+                }
+                ++this.currentlyExecuting;
                 this.pollInfinite();
                 this.isInfiniteRadiusScheduled = true;
                 return firstInfinite.task.pushTask(this.executor);
             } else {
+                ++this.currentlyExecuting;
                 this.pollAwaiting();
                 return firstAwaiting.task.pushTask(this.executor);
             }