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Paper/patches/server/0760-Oprimise-map-impl-for-tracked-players.patch
2022-03-30 13:28:38 -07:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Spottedleaf <Spottedleaf@users.noreply.github.com>
Date: Fri, 19 Feb 2021 22:51:52 -0800
Subject: [PATCH] Oprimise map impl for tracked players
Reference2BooleanOpenHashMap is going to have
better lookups than HashMap.
diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java
index f4c1316ae1cadc1a7a7fed16e0e99704662c41e8..b0aaeb601c8d9df50bf612985bbcbef8a082551f 100644
--- a/src/main/java/net/minecraft/server/level/ChunkMap.java
+++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
@@ -110,6 +110,7 @@ import org.apache.commons.lang3.mutable.MutableObject;
import org.slf4j.Logger;
import org.bukkit.entity.Player;
// CraftBukkit end
+import it.unimi.dsi.fastutil.objects.ReferenceOpenHashSet; // Paper
public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider {
@@ -2155,7 +2156,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
final Entity entity;
private final int range;
SectionPos lastSectionPos;
- public final Set<ServerPlayerConnection> seenBy = Sets.newIdentityHashSet();
+ public final Set<ServerPlayerConnection> seenBy = new ReferenceOpenHashSet<>(); // Paper - optimise map impl
public TrackedEntity(Entity entity, int i, int j, boolean flag) {
this.serverEntity = new ServerEntity(ChunkMap.this.level, entity, j, flag, this::broadcast, this.seenBy); // CraftBukkit