Paper/Spigot-Server-Patches/0081-Use-Optimized-Collections.patch
Zach Brown 70ce6ce831
Move version command update checking to the implementation
This makes it easier for downstream projects (forks) to replace the
version fetching system with their own. It is as simple as implementing
an interface and overriding the default implementation of
org.bukkit.UnsafeValues#getVersionFetcher()

It also makes it easier for us to organize things like the version
history feature.

Lastly I have updated the paper implementation to check against the site
API rather than against jenkins.
2019-05-27 04:13:41 -05:00

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1.8 KiB
Diff

From 1b2ad4e733c58626160941b5719277e1e96e6a3a Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Wed, 30 Mar 2016 02:13:24 -0400
Subject: [PATCH] Use Optimized Collections
Swap out CraftBukkit LongObjectHashMap with Long2ObjectOpenHashMap
Swap out Integer key HashMap for a Int2ObjectOpenHashMap For ChunkProviderServer
Amaranth, the creator of LongObjectHashMap, tested it vs fastutil and determined fastutil to be 3x faster
and could not create anything faster than fastutil.
These collections are super fast as seen
http://java-performance.info/hashmap-overview-jdk-fastutil-goldman-sachs-hppc-koloboke-trove-january-2015/
diff --git a/src/main/java/net/minecraft/server/DataWatcher.java b/src/main/java/net/minecraft/server/DataWatcher.java
index 79a240cd1..f224043d8 100644
--- a/src/main/java/net/minecraft/server/DataWatcher.java
+++ b/src/main/java/net/minecraft/server/DataWatcher.java
@@ -12,6 +12,7 @@ import java.util.Map;
import java.util.concurrent.locks.ReadWriteLock;
import java.util.concurrent.locks.ReentrantReadWriteLock;
import javax.annotation.Nullable;
+import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap; // Paper
import org.apache.commons.lang3.ObjectUtils;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
@@ -21,7 +22,7 @@ public class DataWatcher {
private static final Logger LOGGER = LogManager.getLogger();
private static final Map<Class<? extends Entity>, Integer> b = Maps.newHashMap();
private final Entity c;
- private final Map<Integer, DataWatcher.Item<?>> d = Maps.newHashMap();
+ private final Int2ObjectOpenHashMap<DataWatcher.Item<?>> d = new Int2ObjectOpenHashMap<>(); // Paper
private final ReadWriteLock e = new ReentrantReadWriteLock();
private boolean f = true;
private boolean g;
--
2.21.0