Paper/Spigot-Server-Patches/0311-Add-some-Debug-to-Chunk-Entity-slices.patch
Aikar 22614dd064
Merge branch 'master' into pre/1.13
* master:
  Fix some false positive warnings printing that shouldnt be
2018-08-20 20:23:06 -04:00

90 lines
4.0 KiB
Diff

From fdf7978f1bbee6b38b095758b84082876ece68a8 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Mon, 23 Jul 2018 22:44:23 -0400
Subject: [PATCH] Add some Debug to Chunk Entity slices
If we detect unexpected state, log and try to recover
This should hopefully avoid duplicate entities ever being created
if the entity was to end up in 2 different chunk slices
diff --git a/src/main/java/net/minecraft/server/Chunk.java b/src/main/java/net/minecraft/server/Chunk.java
index abdcf7745a..bd31a7dcab 100644
--- a/src/main/java/net/minecraft/server/Chunk.java
+++ b/src/main/java/net/minecraft/server/Chunk.java
@@ -712,8 +712,34 @@ public class Chunk implements IChunkAccess {
entity.ae = this.locX;
entity.af = k;
entity.ag = this.locZ;
- this.entitySlices[k].add(entity);
+
// Paper start
+ List<Entity> entitySlice = this.entitySlices[k];
+ boolean inThis = entitySlice.contains(entity);
+ List<Entity> currentSlice = entity.entitySlice;
+ if ((currentSlice != null && currentSlice.contains(entity)) || inThis) {
+ if (currentSlice == entitySlice || inThis) {
+ LogManager.getLogger().warn(entity + " was already in this chunk section! Report this to https://github.com/PaperMC/Paper/issues/1302");
+ new Throwable().printStackTrace();
+ return;
+ } else {
+ LogManager.getLogger().warn(entity + " is still in another ChunkSection! Report this to https://github.com/PaperMC/Paper/issues/1302");
+
+ Chunk chunk = entity.getCurrentChunk();
+ if (chunk != null) {
+ if (chunk != this) {
+ LogManager.getLogger().warn(entity + " was in another chunk at that! " + chunk.locX + "," + chunk.locZ);
+ }
+ chunk.removeEntity(entity);
+ } else {
+ removeEntity(entity);
+ }
+ new Throwable().printStackTrace();
+ }
+ }
+ entity.entitySlice = entitySlice;
+ entitySlice.add(entity);
+
this.markDirty();
if (entity instanceof EntityItem) {
itemCounts[k]++;
@@ -743,9 +769,13 @@ public class Chunk implements IChunkAccess {
i = this.entitySlices.length - 1;
}
// Paper start
- if (!this.entitySlices[i].remove(entity)) {
- return;
+ if (entity.entitySlice == null || !entity.entitySlice.contains(entity) || entitySlices[i] == entity.entitySlice) {
+ entity.entitySlice = null;
+ } else {
+ LogManager.getLogger().warn(entity + " was removed from a entitySlice we did not expect. Report this to https://github.com/PaperMC/Paper/issues/1302");
+ new Throwable().printStackTrace();
}
+ if (!this.entitySlices[i].remove(entity)) { return; }
this.markDirty();
if (entity instanceof EntityItem) {
itemCounts[i]--;
@@ -980,6 +1010,7 @@ public class Chunk implements IChunkAccess {
}
// Spigot End
entity.setCurrentChunk(null); // Paper
+ entity.entitySlice = null; // Paper
// Do not pass along players, as doing so can get them stuck outside of time.
// (which for example disables inventory icon updates and prevents block breaking)
diff --git a/src/main/java/net/minecraft/server/Entity.java b/src/main/java/net/minecraft/server/Entity.java
index 4315804ddb..166abea704 100644
--- a/src/main/java/net/minecraft/server/Entity.java
+++ b/src/main/java/net/minecraft/server/Entity.java
@@ -64,6 +64,7 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
}
}
};
+ List<Entity> entitySlice = null;
// Paper end
static boolean isLevelAtLeast(NBTTagCompound tag, int level) {
return tag.hasKey("Bukkit.updateLevel") && tag.getInt("Bukkit.updateLevel") >= level;
--
2.18.0