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-rw-r--r--patches/server/0761-Oprimise-map-impl-for-tracked-players.patch29
1 files changed, 29 insertions, 0 deletions
diff --git a/patches/server/0761-Oprimise-map-impl-for-tracked-players.patch b/patches/server/0761-Oprimise-map-impl-for-tracked-players.patch
new file mode 100644
index 0000000000..91de4460ec
--- /dev/null
+++ b/patches/server/0761-Oprimise-map-impl-for-tracked-players.patch
@@ -0,0 +1,29 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Spottedleaf <[email protected]>
+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