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Array backed synched entity data (#9460)

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Warrior 2023-07-10 15:27:50 +02:00 committed by GitHub
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patches/server/0983-Array-backed-synched-entity-data.patch Normal file
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@ -0,0 +1,56 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: jellysquid3 <jellysquid3@users.noreply.github.com>
Date: Sat, 8 Jul 2023 21:38:05 +0200
Subject: [PATCH] Array backed synched entity data
Original code by jellysquid3 in Lithium, licensed under the GNU Lesser General Public License v3.0 (https://www.gnu.org/licenses/lgpl-3.0.html)
diff --git a/src/main/java/net/minecraft/network/syncher/SynchedEntityData.java b/src/main/java/net/minecraft/network/syncher/SynchedEntityData.java
index 15add3f4dfd718ec09bb1db4f22223466936879c..5dfb35117c285e0b202dc9c088ad5848beb8d054 100644
--- a/src/main/java/net/minecraft/network/syncher/SynchedEntityData.java
+++ b/src/main/java/net/minecraft/network/syncher/SynchedEntityData.java
@@ -34,6 +34,11 @@ public class SynchedEntityData {
private final Int2ObjectMap<SynchedEntityData.DataItem<?>> itemsById = new Int2ObjectOpenHashMap();
// private final ReadWriteLock lock = new ReentrantReadWriteLock(); // Spigot - not required
private boolean isDirty;
+ // Paper start - array backed synched entity data
+ private static final int DEFAULT_ENTRY_COUNT = 10;
+ private static final int GROW_FACTOR = 8;
+ private SynchedEntityData.DataItem<?>[] itemsArray = new SynchedEntityData.DataItem<?>[DEFAULT_ENTRY_COUNT];
+ // Paper end
public SynchedEntityData(Entity trackedEntity) {
this.entity = trackedEntity;
@@ -103,6 +108,15 @@ public class SynchedEntityData {
// this.lock.writeLock().lock(); // Spigot - not required
this.itemsById.put(key.getId(), datawatcher_item);
// this.lock.writeLock().unlock(); // Spigot - not required
+ // Paper start - array backed synched entity data
+ if (this.itemsArray.length <= key.getId()) {
+ final int newSize = Math.min(key.getId() + GROW_FACTOR, MAX_ID_VALUE);
+
+ this.itemsArray = java.util.Arrays.copyOf(this.itemsArray, newSize);
+ }
+
+ this.itemsArray[key.getId()] = datawatcher_item;
+ // Paper end
}
public <T> boolean hasItem(EntityDataAccessor<T> key) {
@@ -130,7 +144,15 @@ public class SynchedEntityData {
return datawatcher_item;
*/
- return (SynchedEntityData.DataItem) this.itemsById.get(key.getId());
+ // Paper start - array backed synched entity data
+ final int id = key.getId();
+
+ if (id < 0 || id >= this.itemsArray.length) {
+ return null;
+ }
+
+ return (DataItem<T>) this.itemsArray[id];
+ // Paper end
// Spigot end
}