PaperMC/patches/server/0613-Oprimise-map-impl-for-tracked-players.patch
2024-06-14 13:07:50 +02:00

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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 d1247df5c51b0d377a27ea7cc5b5a2d1f1bf9b32..cf7c7813d528429a18dc25051df7fc06dc159930 100644
--- a/src/main/java/net/minecraft/server/level/ChunkMap.java
+++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
@@ -1529,7 +1529,7 @@ 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 it.unimi.dsi.fastutil.objects.ReferenceOpenHashSet<>(); // Paper - Perf: optimise map impl
public TrackedEntity(final Entity entity, final int i, final int j, final boolean flag) {
this.serverEntity = new ServerEntity(ChunkMap.this.level, entity, j, flag, this::broadcast, this.seenBy); // CraftBukkit