Paper/Spigot-Server-Patches/0231-Fix-MC-117075-TE-Unload-Lag-Spike.patch

From 0c11302422d14d2cc64b9ed3a16ada9be0ba95a5 Mon Sep 17 00:00:00 2001
From: mezz <tehgeek@gmail.com>
Date: Wed, 9 Aug 2017 17:51:22 -0500
Subject: [PATCH] Fix MC-117075: TE Unload Lag Spike


diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
index b0139fff6..00513d02c 100644
--- a/src/main/java/net/minecraft/server/World.java
+++ b/src/main/java/net/minecraft/server/World.java
@@ -1572,7 +1572,11 @@ public abstract class World implements IBlockAccess {
         this.methodProfiler.c("blockEntities");
         timings.tileEntityTick.startTiming(); // Spigot
         if (!this.tileEntityListUnload.isEmpty()) {
-            this.tileEntityListTick.removeAll(this.tileEntityListUnload);
+            // Paper start - Use alternate implementation with faster contains
+            java.util.Set<TileEntity> toRemove = java.util.Collections.newSetFromMap(new java.util.IdentityHashMap<>());
+            toRemove.addAll(tileEntityListUnload);
+            this.tileEntityListTick.removeAll(toRemove);
+            // Paper end
             //this.tileEntityList.removeAll(this.tileEntityListUnload); // Paper - remove unused list
             this.tileEntityListUnload.clear();
         }
-- 
2.16.1
Optimize Hoppers - Lots of itemstack cloning removed. Only clone if the item is actually moved - Return true when a plugin cancels inventory move item event instead of false, as false causes pulls to cycle through all items. However, pushes do not exhibit the same behavior, so this is not something plugins could of been relying on. - Add option (Default on) to cooldown hoppers when they fail to move an item due to full inventory - Skip subsequent InventoryMoveItemEvents if a plugin does not use the item after first event fire for an iteration 2018-01-18 06:00:51 +00:00			`From 0c11302422d14d2cc64b9ed3a16ada9be0ba95a5 Mon Sep 17 00:00:00 2001`
Fix MC-117075: TE Unload Lag Spike PaperMC port of https://github.com/MinecraftForge/MinecraftForge/pull/4281 2017-08-09 23:11:57 +00:00			`From: mezz <tehgeek@gmail.com>`
			`Date: Wed, 9 Aug 2017 17:51:22 -0500`
			`Subject: [PATCH] Fix MC-117075: TE Unload Lag Spike`


			`diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java`
Add PlayerProfile API to replace GameProfile This simply provides the base API to create the objects. Further commits will come that adds adds usage of this API to existing GameProfile based API's, as well as new API's. 2018-01-16 03:13:17 +00:00			`index b0139fff6..00513d02c 100644`
Fix MC-117075: TE Unload Lag Spike PaperMC port of https://github.com/MinecraftForge/MinecraftForge/pull/4281 2017-08-09 23:11:57 +00:00			`--- a/src/main/java/net/minecraft/server/World.java`
			`+++ b/src/main/java/net/minecraft/server/World.java`
Update upstream 2017-12-09 17:37:09 +00:00			`@@ -1572,7 +1572,11 @@ public abstract class World implements IBlockAccess {`
Update to 1.12.2, May the Tacos be with you 2017-09-18 11:04:01 +00:00			`this.methodProfiler.c("blockEntities");`
Fix race condition with chunks, dead tile entities Fixes PaperMC/Paper#883 same issue as MinecraftForge/MinecraftForge#4386 A more detailed anaylsis of what is probably going on, courtesy of @bs2609 and the MCForge Issue Tracker is: When a chunk is unloaded, the entities and tile entities it contains are marked for removal. The actual removal (from the world) occurs later, when the world ticks its entities. Conversely, when a chunk is loaded, it generally adds its entities to the world promptly, without queuing. Here's the normal sequence of events: Chunk unloaded Old entities removed Chunk loaded New entities added However, what can happen: Chunk unloaded Chunk loaded New entities added Old entities removed This occurs when an unloaded chunk is reloaded before its corresponding entities have been removed. 2017-09-12 02:21:57 +00:00			`timings.tileEntityTick.startTiming(); // Spigot`
			`if (!this.tileEntityListUnload.isEmpty()) {`
			`- this.tileEntityListTick.removeAll(this.tileEntityListUnload);`
			`+ // Paper start - Use alternate implementation with faster contains`
			`+ java.util.Set<TileEntity> toRemove = java.util.Collections.newSetFromMap(new java.util.IdentityHashMap<>());`
			`+ toRemove.addAll(tileEntityListUnload);`
			`+ this.tileEntityListTick.removeAll(toRemove);`
			`+ // Paper end`
			`//this.tileEntityList.removeAll(this.tileEntityListUnload); // Paper - remove unused list`
Fix MC-117075: TE Unload Lag Spike PaperMC port of https://github.com/MinecraftForge/MinecraftForge/pull/4281 2017-08-09 23:11:57 +00:00			`this.tileEntityListUnload.clear();`
			`}`
			`--`
Optimize Hoppers - Lots of itemstack cloning removed. Only clone if the item is actually moved - Return true when a plugin cancels inventory move item event instead of false, as false causes pulls to cycle through all items. However, pushes do not exhibit the same behavior, so this is not something plugins could of been relying on. - Add option (Default on) to cooldown hoppers when they fail to move an item due to full inventory - Skip subsequent InventoryMoveItemEvents if a plugin does not use the item after first event fire for an iteration 2018-01-18 06:00:51 +00:00			`2.16.1`
Fix MC-117075: TE Unload Lag Spike PaperMC port of https://github.com/MinecraftForge/MinecraftForge/pull/4281 2017-08-09 23:11:57 +00:00