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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Spottedleaf <Spottedleaf@users.noreply.github.com>
Date: Sun, 31 Oct 2021 21:34:00 -0700
Subject: [PATCH] Async catch modifications to critical entity state

These used to be here from Spigot, but were dropped with 1.17.
Now in 1.17, this state is _even more_ critical than it was before,
so these must exist to catch stupid plugins.

diff --git a/src/main/java/net/minecraft/world/level/entity/PersistentEntitySectionManager.java b/src/main/java/net/minecraft/world/level/entity/PersistentEntitySectionManager.java
index db2ef605bccbb9024f787cd58f3cb93df03d5532..3d5f38a1ca0206e5bcae4ed49d3df7ce0967f722 100644
--- a/src/main/java/net/minecraft/world/level/entity/PersistentEntitySectionManager.java
+++ b/src/main/java/net/minecraft/world/level/entity/PersistentEntitySectionManager.java
@@ -138,6 +138,7 @@ public class PersistentEntitySectionManager<T extends EntityAccess> implements A
     }
 
     private boolean addEntityUuid(T entity) {
+        org.spigotmc.AsyncCatcher.catchOp("Entity add by UUID"); // Paper
         if (!this.knownUuids.add(entity.getUUID())) {
             // Paper start
             T conflict = this.visibleEntityStorage.getEntity(entity.getUUID());
@@ -166,6 +167,7 @@ public class PersistentEntitySectionManager<T extends EntityAccess> implements A
     }
 
     private boolean addEntity(T entity, boolean existing) {
+        org.spigotmc.AsyncCatcher.catchOp("Entity add"); // Paper
         if (!this.addEntityUuid(entity)) {
             return false;
         } else {
@@ -210,19 +212,23 @@ public class PersistentEntitySectionManager<T extends EntityAccess> implements A
     }
 
     void startTicking(T entity) {
+        org.spigotmc.AsyncCatcher.catchOp("Entity start ticking"); // Paper
         this.callbacks.onTickingStart(entity);
     }
 
     void stopTicking(T entity) {
+        org.spigotmc.AsyncCatcher.catchOp("Entity stop ticking"); // Paper
         this.callbacks.onTickingEnd(entity);
     }
 
     void startTracking(T entity) {
+        org.spigotmc.AsyncCatcher.catchOp("Entity start tracking"); // Paper
         this.visibleEntityStorage.add(entity);
         this.callbacks.onTrackingStart(entity);
     }
 
     void stopTracking(T entity) {
+        org.spigotmc.AsyncCatcher.catchOp("Entity stop tracking"); // Paper
         this.callbacks.onTrackingEnd(entity);
         this.visibleEntityStorage.remove(entity);
     }
@@ -236,6 +242,7 @@ public class PersistentEntitySectionManager<T extends EntityAccess> implements A
     }
 
     public void updateChunkStatus(ChunkPos chunkPos, Visibility trackingStatus) {
+        org.spigotmc.AsyncCatcher.catchOp("Update chunk status"); // Paper
         long i = chunkPos.toLong();
 
         if (trackingStatus == Visibility.HIDDEN) {
@@ -280,6 +287,7 @@ public class PersistentEntitySectionManager<T extends EntityAccess> implements A
     }
 
     public void ensureChunkQueuedForLoad(long chunkPos) {
+        org.spigotmc.AsyncCatcher.catchOp("Entity chunk save"); // Paper
         PersistentEntitySectionManager.ChunkLoadStatus persistententitysectionmanager_b = (PersistentEntitySectionManager.ChunkLoadStatus) this.chunkLoadStatuses.get(chunkPos);
 
         if (persistententitysectionmanager_b == PersistentEntitySectionManager.ChunkLoadStatus.FRESH) {
@@ -324,6 +332,7 @@ public class PersistentEntitySectionManager<T extends EntityAccess> implements A
     }
 
     private void requestChunkLoad(long chunkPos) {
+        org.spigotmc.AsyncCatcher.catchOp("Entity chunk load request"); // Paper
         this.chunkLoadStatuses.put(chunkPos, PersistentEntitySectionManager.ChunkLoadStatus.PENDING);
         ChunkPos chunkcoordintpair = new ChunkPos(chunkPos);
         CompletableFuture completablefuture = this.permanentStorage.loadEntities(chunkcoordintpair);
@@ -337,6 +346,7 @@ public class PersistentEntitySectionManager<T extends EntityAccess> implements A
     }
 
     private boolean processChunkUnload(long chunkPos) {
+        org.spigotmc.AsyncCatcher.catchOp("Entity chunk unload process"); // Paper
         boolean flag = this.storeChunkSections(chunkPos, (entityaccess) -> {
             entityaccess.getPassengersAndSelf().forEach(this::unloadEntity);
         }, true); // CraftBukkit - add boolean for event call
@@ -361,6 +371,7 @@ public class PersistentEntitySectionManager<T extends EntityAccess> implements A
     }
 
     private void processPendingLoads() {
+        org.spigotmc.AsyncCatcher.catchOp("Entity chunk process pending loads"); // Paper
         ChunkEntities<T> chunkentities; // CraftBukkit - decompile error
 
         while ((chunkentities = (ChunkEntities) this.loadingInbox.poll()) != null) {
@@ -377,6 +388,7 @@ public class PersistentEntitySectionManager<T extends EntityAccess> implements A
     }
 
     public void tick() {
+        org.spigotmc.AsyncCatcher.catchOp("Entity manager tick"); // Paper
         this.processPendingLoads();
         this.processUnloads();
     }
@@ -397,6 +409,7 @@ public class PersistentEntitySectionManager<T extends EntityAccess> implements A
     }
 
     public void autoSave() {
+        org.spigotmc.AsyncCatcher.catchOp("Entity manager autosave"); // Paper
         this.getAllChunksToSave().forEach((java.util.function.LongConsumer) (i) -> { // CraftBukkit - decompile error
             boolean flag = this.chunkVisibility.get(i) == Visibility.HIDDEN;
 
@@ -411,6 +424,7 @@ public class PersistentEntitySectionManager<T extends EntityAccess> implements A
     }
 
     public void saveAll() {
+        org.spigotmc.AsyncCatcher.catchOp("Entity manager save"); // Paper
         LongSet longset = this.getAllChunksToSave();
 
         while (!longset.isEmpty()) {
@@ -518,6 +532,7 @@ public class PersistentEntitySectionManager<T extends EntityAccess> implements A
             long i = SectionPos.asLong(blockposition); final long newSectionPos = i; // Paper - diff on change, new position section
 
             if (i != this.currentSectionKey) {
+                org.spigotmc.AsyncCatcher.catchOp("Entity move"); // Paper
                 PersistentEntitySectionManager.this.entitySliceManager.moveEntity((Entity)this.entity); // Paper
                 Visibility visibility = this.currentSection.getStatus(); final Visibility oldVisibility = visibility; // Paper - diff on change - this should be OLD section visibility
                 // Paper start
@@ -583,6 +598,7 @@ public class PersistentEntitySectionManager<T extends EntityAccess> implements A
 
         @Override
         public void onRemove(Entity.RemovalReason reason) {
+            org.spigotmc.AsyncCatcher.catchOp("Entity remove"); // Paper
             if (!this.currentSection.remove(this.entity)) {
                 PersistentEntitySectionManager.LOGGER.warn("Entity {} wasn't found in section {} (destroying due to {})", new Object[]{this.entity, SectionPos.of(this.currentSectionKey), reason});
             }