PaperMC/Spigot-Server-Patches/0278-Optimize-CraftBlockData-Creation.patch

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: miclebrick <miclebrick@outlook.com>
Date: Thu, 23 Aug 2018 11:45:32 -0400
Subject: [PATCH] Optimize CraftBlockData Creation
Avoids a hashmap lookup by cacheing a reference to the CraftBlockData
and cloning it when one is needed.
diff --git a/src/main/java/net/minecraft/server/IBlockData.java b/src/main/java/net/minecraft/server/IBlockData.java
index 9ab57be8500bf5106e32671b8d5fb11d8e9b1c60..c1ff62aa52595decd7ed8278eb63e7c6e46feefe 100644
--- a/src/main/java/net/minecraft/server/IBlockData.java
+++ b/src/main/java/net/minecraft/server/IBlockData.java
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@@ -4,6 +4,8 @@ import com.google.common.collect.ImmutableMap;
import com.mojang.datafixers.Dynamic;
import com.mojang.datafixers.types.DynamicOps;
import com.mojang.datafixers.util.Pair;
+import org.bukkit.craftbukkit.block.data.CraftBlockData;
+
import java.util.Arrays;
import java.util.Iterator;
import java.util.List;
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@@ -38,6 +40,15 @@ public class IBlockData extends BlockDataAbstract<Block, IBlockData> implements
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return (Block) this.a;
}
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+ // Paper start - impl cached craft block data, lazy load to fix issue with loading at the wrong time
+ private CraftBlockData cachedCraftBlockData;
+
+ public CraftBlockData createCraftBlockData() {
+ if(cachedCraftBlockData == null) cachedCraftBlockData = CraftBlockData.createData(this);
+ return (CraftBlockData) cachedCraftBlockData.clone();
+ }
+ // Paper end
+
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public Material getMaterial() {
return this.getBlock().k(this);
}
diff --git a/src/main/java/org/bukkit/craftbukkit/block/data/CraftBlockData.java b/src/main/java/org/bukkit/craftbukkit/block/data/CraftBlockData.java
index 683b17a0c9f09d90c2fc30aad6516b4d01d2f34f..a0746a1694a01996eab44a91b078ba14996f3d13 100644
--- a/src/main/java/org/bukkit/craftbukkit/block/data/CraftBlockData.java
+++ b/src/main/java/org/bukkit/craftbukkit/block/data/CraftBlockData.java
@@ -549,7 +549,17 @@ public class CraftBlockData implements BlockData {
return craft;
}
+ // Paper start - optimize creating BlockData to not need a map lookup
+ static {
+ // Initialize cached data for all IBlockData instances after registration
+ Block.REGISTRY_ID.iterator().forEachRemaining(IBlockData::createCraftBlockData);
+ }
public static CraftBlockData fromData(IBlockData data) {
+ return data.createCraftBlockData();
+ }
+
+ public static CraftBlockData createData(IBlockData data) {
+ // Paper end
return MAP.getOrDefault(data.getBlock().getClass(), CraftBlockData::new).apply(data);
}
}