Paper/patches/server/0835-Async-catch-modifications-to-critical-entity-state.patch

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 fe5739c0949636343ea68e403aa5f4bef89e9d9f..50916d29c98b988a206a692d2babd0c742f5d085 100644
--- a/src/main/java/net/minecraft/world/level/entity/PersistentEntitySectionManager.java
+++ b/src/main/java/net/minecraft/world/level/entity/PersistentEntitySectionManager.java
@@ -134,6 +134,7 @@ 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());
@@ -162,6 +163,7 @@ 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 {
@@ -206,19 +208,23 @@ 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);
     }
@@ -232,6 +238,7 @@ 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) {
@@ -291,6 +298,7 @@ public class PersistentEntitySectionManager<T extends EntityAccess> implements A
 
     private boolean storeChunkSections(long chunkPos, Consumer<T> action, boolean callEvent) {
         // CraftBukkit end
+        org.spigotmc.AsyncCatcher.catchOp("Entity chunk save"); // Paper
         PersistentEntitySectionManager.ChunkLoadStatus persistententitysectionmanager_b = (PersistentEntitySectionManager.ChunkLoadStatus) this.chunkLoadStatuses.get(chunkPos);
 
         if (persistententitysectionmanager_b == PersistentEntitySectionManager.ChunkLoadStatus.PENDING) {
@@ -320,6 +328,7 @@ 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);
@@ -333,6 +342,7 @@ 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
@@ -357,6 +367,7 @@ 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) {
@@ -379,6 +390,7 @@ public class PersistentEntitySectionManager<T extends EntityAccess> implements A
     }
 
     public void tick() {
+        org.spigotmc.AsyncCatcher.catchOp("Entity manager tick"); // Paper
         this.processPendingLoads();
         this.processUnloads();
     }
@@ -399,6 +411,7 @@ 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;
 
@@ -413,6 +426,7 @@ 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()) {
@@ -520,6 +534,7 @@ 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
@@ -585,6 +600,7 @@ 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 {})", this.entity, SectionPos.of(this.currentSectionKey), reason);
             }