From 51ad9b35e2f2b4925875f701ed1647ff170d7166 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Sun, 26 Aug 2018 20:49:50 -0400
Subject: [PATCH] Optimize RegistryMaterials

Use larger initial sizes to increase bucket capacity on the BiMap

BiMap.get was seen to be using a good bit of CPU time.

diff --git a/src/main/java/net/minecraft/server/RegistryMaterials.java b/src/main/java/net/minecraft/server/RegistryMaterials.java
index f291e05b26..fed38e6ef0 100644
--- a/src/main/java/net/minecraft/server/RegistryMaterials.java
+++ b/src/main/java/net/minecraft/server/RegistryMaterials.java
@@ -16,9 +16,9 @@ import org.apache.logging.log4j.Logger;
 public class RegistryMaterials<T> extends IRegistryWritable<T> {
 
     protected static final Logger LOGGER = LogManager.getLogger();
-    protected final RegistryID<T> b = new RegistryID<>(256);
-    protected final BiMap<MinecraftKey, T> c = HashBiMap.create();
-    protected Object[] d;
+    protected final RegistryID<T> b = new RegistryID<>(2048); // Paper - use bigger expected size to reduce collisions
+    protected final BiMap<MinecraftKey, T> c = HashBiMap.create(2048); // Paper - use bigger expected size to reduce collisions
+    protected T[] d; // Paper - Decompile fix
     private int R;
 
     public RegistryMaterials() {}
@@ -98,7 +98,7 @@ public class RegistryMaterials<T> extends IRegistryWritable<T> {
                 return null;
             }
 
-            this.d = collection.toArray(new Object[collection.size()]);
+            this.d = (T[]) collection.toArray(new Object[collection.size()]); // Paper - Decompile fix
         }
 
         return this.d[random.nextInt(this.d.length)];
-- 
2.21.0

