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PaperMC/patches/server/0805-Avoid-Lazy-Initialization-for-Enum-Fields.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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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Owen1212055 <23108066+Owen1212055@users.noreply.github.com>
Date: Sun, 14 May 2023 00:47:28 -0400
Subject: [PATCH] Avoid Lazy Initialization for Enum Fields
This patch is meant to get rid of any instances of lazy initialization that Minecraft introduces for enums.
This has the possibility to create race condition issues, and generally don't make sense to be lazily done anyways.
diff --git a/src/main/java/com/mojang/math/OctahedralGroup.java b/src/main/java/com/mojang/math/OctahedralGroup.java
index 0a3b6b8e250bd35530c05a1cdaf2eb8a9af4c72b..9aa82fc757c67a9456b2bdec744c0cb474d64df6 100644
--- a/src/main/java/com/mojang/math/OctahedralGroup.java
+++ b/src/main/java/com/mojang/math/OctahedralGroup.java
@@ -110,6 +110,7 @@ public enum OctahedralGroup implements StringRepresentable {
this.permutation = axisTransformation;
this.transformation = new Matrix3f().scaling(flipX ? -1.0F : 1.0F, flipY ? -1.0F : 1.0F, flipZ ? -1.0F : 1.0F);
this.transformation.mul(axisTransformation.transformation());
+ this.initializeRotationDirections(); // Paper - Avoid Lazy Initialization for Enum Fields
}
private BooleanList packInversions() {
@@ -138,7 +139,7 @@ public enum OctahedralGroup implements StringRepresentable {
return this.name;
}
- public Direction rotate(Direction direction) {
+ public void initializeRotationDirections() { // Paper - Avoid Lazy Initialization for Enum Fields
if (this.rotatedDirections == null) {
this.rotatedDirections = Maps.newEnumMap(Direction.class);
Direction.Axis[] axiss = Direction.Axis.values();
@@ -153,6 +154,10 @@ public enum OctahedralGroup implements StringRepresentable {
}
}
+ // Paper start - Avoid Lazy Initialization for Enum Fields
+ }
+ public Direction rotate(Direction direction) {
+ // Paper end - Avoid Lazy Initialization for Enum Fields
return this.rotatedDirections.get(direction);
}