Paper/patches/server/0680-Cache-resource-keys-and-optimize-reference-Holder-ta.patch
Spottedleaf 8c5b837e05 Rework async chunk api implementation
Firstly, the old methods all routed to the CompletableFuture method.
However, the CF method could not guarantee that if the caller
was off-main that the future would be "completed" on-main. Since
the callback methods used the CF one, this meant that the callback
methods did not guarantee that the callbacks were to be called on
the main thread.

Now, all methods route to getChunkAtAsync(x, z, gen, urgent, cb)
so that the methods with the callback are guaranteed to invoke
the callback on the main thread. The CF behavior remains unchanged;
it may still appear to complete on main if invoked off-main.

Secondly, remove the scheduleOnMain invocation in the async
chunk completion. This unnecessarily delays the callback
by 1 tick.

Thirdly, add getChunksAtAsync(minX, minZ, maxX, maxZ, ...) which
will load chunks within an area. This method is provided as a helper
as keeping all chunks loaded within an area can be complicated to
implement for plugins (due to the lacking ticket API), and is
already implemented internally anyways.

Fourthly, remove the ticket addition that occured with getChunkAt
and getChunkAtAsync. The ticket addition may delay the unloading
of the chunk unnecessarily. It also fixes a very rare timing bug
where the future/callback would be completed after the chunk
unloads.
2024-11-18 23:00:59 -08:00

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Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Sun, 20 Mar 2022 22:06:47 -0700
Subject: [PATCH] Cache resource keys and optimize reference Holder tags set
TagKeys are always interned, so we can use a reference hash set for them
diff --git a/src/main/java/net/minecraft/core/Holder.java b/src/main/java/net/minecraft/core/Holder.java
index 94671ea227b59a8f820425c401712e6aeb8b2b10..e91c4e26c25980645941ca8fbdcc3a9d02e31063 100644
--- a/src/main/java/net/minecraft/core/Holder.java
+++ b/src/main/java/net/minecraft/core/Holder.java
@@ -230,7 +230,7 @@ public interface Holder<T> {
}
void bindTags(Collection<TagKey<T>> tags) {
- this.tags = Set.copyOf(tags);
+ this.tags = java.util.Collections.unmodifiableSet(new it.unimi.dsi.fastutil.objects.ReferenceOpenHashSet<>(tags)); // Paper
}
@Override
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntityType.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntityType.java
index 6cf8af0c85231de9955282d4abaa0607ec9a195c..d230cbc26f61d8ac5880825aca4dfab197c20401 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntityType.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntityType.java
@@ -25,11 +25,11 @@ public class CraftEntityType {
return bukkit;
}
+ private static final java.util.Map<EntityType, net.minecraft.resources.ResourceKey<net.minecraft.world.entity.EntityType<?>>> KEY_CACHE = java.util.Collections.synchronizedMap(new java.util.EnumMap<>(EntityType.class)); // Paper
public static net.minecraft.world.entity.EntityType<?> bukkitToMinecraft(EntityType bukkit) {
Preconditions.checkArgument(bukkit != null);
-
return CraftRegistry.getMinecraftRegistry(Registries.ENTITY_TYPE)
- .getOptional(CraftNamespacedKey.toMinecraft(bukkit.getKey())).orElseThrow();
+ .getOptional(KEY_CACHE.computeIfAbsent(bukkit, type -> net.minecraft.resources.ResourceKey.create(Registries.ENTITY_TYPE, CraftNamespacedKey.toMinecraft(type.getKey())))).orElseThrow();
}
public static Holder<net.minecraft.world.entity.EntityType<?>> bukkitToMinecraftHolder(EntityType bukkit) {