Paper/Spigot-Server-Patches/0102-Use-Optimized-Collections.patch
2016-12-20 17:45:00 -06:00

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2.6 KiB
Diff

From bcf0f8cce8edf3181863e5e35b2879c2d884de24 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/ChunkProviderServer.java b/src/main/java/net/minecraft/server/ChunkProviderServer.java
index 902f9ac..a57bcaf 100644
--- a/src/main/java/net/minecraft/server/ChunkProviderServer.java
+++ b/src/main/java/net/minecraft/server/ChunkProviderServer.java
@@ -24,7 +24,7 @@ import org.bukkit.event.world.ChunkUnloadEvent;
public class ChunkProviderServer implements IChunkProvider {
private static final Logger a = LogManager.getLogger();
- public final Set<Long> unloadQueue = Sets.newHashSet();
+ public final it.unimi.dsi.fastutil.longs.LongSet unloadQueue = new it.unimi.dsi.fastutil.longs.LongArraySet(); // PAIL: private -> public // Paper
public final ChunkGenerator chunkGenerator;
private final IChunkLoader chunkLoader;
// Paper start
diff --git a/src/main/java/net/minecraft/server/DataWatcher.java b/src/main/java/net/minecraft/server/DataWatcher.java
index 419add5..820c152 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 a = 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 Map<Integer, DataWatcher.Item<?>> d = new Int2ObjectOpenHashMap<>(); // Paper
private final ReadWriteLock e = new ReentrantReadWriteLock();
private boolean f = true;
private boolean g;
--
2.9.3