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Paper-Old/Spigot-Server-Patches/0414-Avoid-Chunk-Lookups-for-Entity-TileEntity-Current-Ch.patch
2019-12-15 18:33:43 +00:00

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From 404c8ec69e874c98023af9914dd56c7863dbc99a Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Wed, 4 Jul 2018 03:39:51 -0400
Subject: [PATCH] Avoid Chunk Lookups for Entity/TileEntity Current Chunk
SPECIAL 1.14.1 NOTE:
This patch caused a memory leak since the tile entity's chunk was set to null
before it was removed. Ensure this issue is resolved!
In many places where we simply want the current chunk the entity
is in, instead of doing a hashmap lookup for it, we now have access
to the object directly on the Entity/TileEntity object we can directly grab.
Use that local value instead to reduce lookups in many hot places.
diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
index 985f30372..67159b8a8 100644
--- a/src/main/java/net/minecraft/server/World.java
+++ b/src/main/java/net/minecraft/server/World.java
@@ -776,7 +776,7 @@ public abstract class World implements GeneratorAccess, AutoCloseable {
if (!tileentity.isRemoved() && tileentity.hasWorld()) {
BlockPosition blockposition = tileentity.getPosition();
- if (this.chunkProvider.a(blockposition) && this.getWorldBorder().a(blockposition)) {
+ if (tileentity.getCurrentChunk() != null && this.getWorldBorder().a(blockposition)) { // Paper
try {
gameprofilerfiller.a(() -> {
return String.valueOf(TileEntityTypes.a(tileentity.getTileType()));
@@ -815,8 +815,11 @@ public abstract class World implements GeneratorAccess, AutoCloseable {
this.tileEntityListTick.remove(tileTickPosition--);
// Spigot end
//this.tileEntityList.remove(tileentity); // Paper - remove unused list
- if (this.isLoaded(tileentity.getPosition())) {
- this.getChunkAtWorldCoords(tileentity.getPosition()).removeTileEntity(tileentity.getPosition());
+ // Paper start - use local chunk reference
+ Chunk chunk = tileentity.getCurrentChunk();
+ if (chunk != null) {
+ chunk.removeTileEntity(tileentity.getPosition());
+ // Paper end
}
}
}
@@ -836,8 +839,8 @@ public abstract class World implements GeneratorAccess, AutoCloseable {
}
// CraftBukkit end */
- if (this.isLoaded(tileentity1.getPosition())) {
- Chunk chunk = this.getChunkAtWorldCoords(tileentity1.getPosition());
+ Chunk chunk = tileentity1.getCurrentChunk(); // Paper
+ if (chunk != null) { // Paper
IBlockData iblockdata = chunk.getType(tileentity1.getPosition());
chunk.setTileEntity(tileentity1.getPosition(), tileentity1);
diff --git a/src/main/java/net/minecraft/server/WorldServer.java b/src/main/java/net/minecraft/server/WorldServer.java
index 83fb8737a..c473c7d16 100644
--- a/src/main/java/net/minecraft/server/WorldServer.java
+++ b/src/main/java/net/minecraft/server/WorldServer.java
@@ -1384,9 +1384,12 @@ public class WorldServer extends World {
}
private void removeEntityFromChunk(Entity entity) {
- IChunkAccess ichunkaccess = this.getChunkAt(entity.chunkX, entity.chunkZ, ChunkStatus.FULL, false);
+ // Paper start
+ if (!entity.inChunk) return;
+ IChunkAccess ichunkaccess = this.getChunkIfLoaded(entity.chunkX, entity.chunkZ);
+ // Paper start
- if (ichunkaccess instanceof Chunk) {
+ if (ichunkaccess != null) { // Paper
((Chunk) ichunkaccess).b(entity);
}
--
2.24.1