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LeavesMC/patches/server/0026-Reduce-entity-allocations.patch
2024-07-12 14:34:28 +08:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: violetc <58360096+s-yh-china@users.noreply.github.com>
Date: Wed, 17 Aug 2022 10:48:18 +0800
Subject: [PATCH] Reduce entity allocations
This patch is Powered by Pufferfish(https://github.com/pufferfish-gg/Pufferfish)
diff --git a/src/main/java/net/minecraft/world/entity/ai/attributes/AttributeMap.java b/src/main/java/net/minecraft/world/entity/ai/attributes/AttributeMap.java
index 69992ebc999ea3ff9e47e4e049bcc514c01150ca..2118ad41e94e8f5e5fac50286ceb24ab70db88f2 100644
--- a/src/main/java/net/minecraft/world/entity/ai/attributes/AttributeMap.java
+++ b/src/main/java/net/minecraft/world/entity/ai/attributes/AttributeMap.java
@@ -23,9 +23,11 @@ public class AttributeMap {
private final Set<AttributeInstance> attributesToSync = new ObjectOpenHashSet<>();
private final Set<AttributeInstance> attributesToUpdate = new ObjectOpenHashSet<>();
private final AttributeSupplier supplier;
+ private final java.util.function.Function<Holder<Attribute>, AttributeInstance> createInstance; // Leaves - reduce entity allocations
public AttributeMap(AttributeSupplier defaultAttributes) {
this.supplier = defaultAttributes;
+ this.createInstance = attribute -> this.supplier.createInstance(this::onAttributeModified, attribute);
}
private void onAttributeModified(AttributeInstance instance) {
@@ -49,7 +51,13 @@ public class AttributeMap {
@Nullable
public AttributeInstance getInstance(Holder<Attribute> attribute) {
- return this.attributes.computeIfAbsent(attribute, attributex -> this.supplier.createInstance(this::onAttributeModified, attributex));
+ // Leaves start - cache lambda, as for some reason java allocates it anyways
+ if (org.leavesmc.leaves.LeavesConfig.reduceEntityAllocations) {
+ return this.attributes.computeIfAbsent(attribute, this.createInstance);
+ } else {
+ return this.attributes.computeIfAbsent(attribute, attributex -> this.supplier.createInstance(this::onAttributeModified, attributex));
+ }
+ // Leaves end - cache lambda, as for some reason java allocates it anyways
}
public boolean hasAttribute(Holder<Attribute> attribute) {