Paper/Spigot-Server-Patches/0008-Store-counts-for-each-Entity-Block-Entity-Type.patch
Aikar 9dc4d6448b
Numerous fixes to entity related changes
While it wasn't really "broken" before, if plugins use NMS
(which they really should't be) and mess with entity management
themselves, and get it wrong, they could ultimately corrupt our
state expectations.

I've been unable to reproduce any issues locally, but these changes
are the result of me analyzing the code pretty deeply and seeing
about how to make it more durable to abnormal usage.

Any servers seeing oddities, please run with -Ddebug.entities=true
and send me any logs triggered.
2019-04-05 23:08:45 -04:00

59 lines
2.4 KiB
Diff

From dbaafc47c5209214b5bd44396640cbf5da05c453 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Wed, 4 Jul 2018 02:13:59 -0400
Subject: [PATCH] Store counts for each Entity/Block Entity Type
Opens door for future patches to optimize performance
diff --git a/src/main/java/net/minecraft/server/Chunk.java b/src/main/java/net/minecraft/server/Chunk.java
index 95a51ab745..554fbeb071 100644
--- a/src/main/java/net/minecraft/server/Chunk.java
+++ b/src/main/java/net/minecraft/server/Chunk.java
@@ -67,15 +67,19 @@ public class Chunk implements IChunkAccess {
private int neighbors = 0x1 << 12;
public long chunkKey;
// Paper start
+ public final co.aikar.util.Counter<String> entityCounts = new co.aikar.util.Counter<>();
+ public final co.aikar.util.Counter<String> tileEntityCounts = new co.aikar.util.Counter<>();
private class TileEntityHashMap extends java.util.HashMap<BlockPosition, TileEntity> {
@Override
public TileEntity put(BlockPosition key, TileEntity value) {
TileEntity replaced = super.put(key, value);
if (replaced != null) {
replaced.setCurrentChunk(null);
+ tileEntityCounts.decrement(replaced.getMinecraftKeyString());
}
if (value != null) {
value.setCurrentChunk(Chunk.this);
+ tileEntityCounts.increment(value.getMinecraftKeyString());
}
return replaced;
}
@@ -85,6 +89,7 @@ public class Chunk implements IChunkAccess {
TileEntity removed = super.remove(key);
if (removed != null) {
removed.setCurrentChunk(null);
+ tileEntityCounts.decrement(removed.getMinecraftKeyString());
}
return removed;
}
@@ -675,6 +680,7 @@ public class Chunk implements IChunkAccess {
k = this.entitySlices.length - 1;
}
+ if (!entity.inChunk || entity.getCurrentChunk() != this) entityCounts.increment(entity.getMinecraftKeyString()); // Paper
entity.inChunk = true;
entity.setCurrentChunk(this); // Paper
entity.chunkX = this.locX;
@@ -705,6 +711,7 @@ public class Chunk implements IChunkAccess {
if (!this.entitySlices[i].remove(entity)) {
return;
}
+ entityCounts.decrement(entity.getMinecraftKeyString());
// Paper end
}
--
2.21.0