From ef04639136c63dc275c50894c2ba0de88c3f0bc6 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Sun, 22 Jul 2018 21:21:41 -0400
Subject: [PATCH] Don't save Proto Chunks

These chunks are unfinished, and waste cpu time saving these unfinished chunks.
the loadChunk method refuses to acknoledge they exists, and will restart
a new chunk generation process to begin with, so saving them serves no benefit.

diff --git a/src/main/java/net/minecraft/server/ChunkRegionLoader.java b/src/main/java/net/minecraft/server/ChunkRegionLoader.java
index ec328126cf..3d8f0b5786 100644
--- a/src/main/java/net/minecraft/server/ChunkRegionLoader.java
+++ b/src/main/java/net/minecraft/server/ChunkRegionLoader.java
@@ -300,6 +300,7 @@ public class ChunkRegionLoader implements IChunkLoader, IAsyncChunkSaver {
     }
 
     public void saveChunk(World world, IChunkAccess ichunkaccess, boolean unloaded) throws IOException, ExceptionWorldConflict {
+        if (ichunkaccess.i().d() == ChunkStatus.Type.PROTOCHUNK) { return; } // Paper - don't save proto chunks
         // Spigot end
         world.checkSession();
 
diff --git a/src/main/java/net/minecraft/server/ChunkTaskScheduler.java b/src/main/java/net/minecraft/server/ChunkTaskScheduler.java
index 22af9c1885..95eb1a84ac 100644
--- a/src/main/java/net/minecraft/server/ChunkTaskScheduler.java
+++ b/src/main/java/net/minecraft/server/ChunkTaskScheduler.java
@@ -24,7 +24,7 @@ public class ChunkTaskScheduler extends Scheduler<ChunkCoordIntPair, ChunkStatus
         protected boolean a(Scheduler.a scheduler_a) {
             ProtoChunk protochunk = (ProtoChunk) scheduler_a.a();
 
-            return !protochunk.ab_() && !protochunk.h();
+            return !protochunk.ab_() /*&& !protochunk.h()*/; // Paper
         }
     };
 
@@ -88,6 +88,7 @@ public class ChunkTaskScheduler extends Scheduler<ChunkCoordIntPair, ChunkStatus
     }
 
     public void a(BooleanSupplier booleansupplier) {
+        if (true) return; // Paper - we don't save proto chunks, and don't want to block thread
         IChunkLoader ichunkloader = this.e;
 
         synchronized (this.e) {
-- 
2.19.0