PaperMC/Spigot-Server-Patches/0374-Optimize-GameRules-to-use-LinkedHashMap.patch

From 26aaafb89179c1b8d19ed21a8ebe9cd913b1fd15 Mon Sep 17 00:00:00 2001
From: Spottedleaf <Spottedleaf@users.noreply.github.com>
Date: Thu, 4 Apr 2019 17:55:05 -0700
Subject: [PATCH] Optimize GameRules to use LinkedHashMap

Previously TreeMap was used which has poor get(K) performance.

diff --git a/src/main/java/net/minecraft/server/GameRules.java b/src/main/java/net/minecraft/server/GameRules.java
index 45d5675adf..58b3d0ec93 100644
--- a/src/main/java/net/minecraft/server/GameRules.java
+++ b/src/main/java/net/minecraft/server/GameRules.java
@@ -21,9 +21,7 @@ import org.apache.logging.log4j.Logger;
 public class GameRules {
 
     private static final Logger LOGGER = LogManager.getLogger();
-    private static final Map<GameRules.GameRuleKey<?>, GameRules.GameRuleDefinition<?>> z = Maps.newTreeMap(Comparator.comparing((gamerules_gamerulekey) -> {
-        return gamerules_gamerulekey.a;
-    }));
+    private static final Map<GameRules.GameRuleKey<?>, GameRules.GameRuleDefinition<?>> z = Maps.newLinkedHashMap(); // Paper
     public static final GameRules.GameRuleKey<GameRules.GameRuleBoolean> DO_FIRE_TICK = a("doFireTick", GameRules.GameRuleBoolean.b(true));
     public static final GameRules.GameRuleKey<GameRules.GameRuleBoolean> MOB_GRIEFING = a("mobGriefing", GameRules.GameRuleBoolean.b(true));
     public static final GameRules.GameRuleKey<GameRules.GameRuleBoolean> KEEP_INVENTORY = a("keepInventory", GameRules.GameRuleBoolean.b(false));
-- 
2.22.0