PaperMC/patches/server/1018-Fix-race-condition-on-UpgradeData.BlockFixers-class-.patch
Jake Potrebic 7c2dc4b342
Use Codecs for adventure Component conversions & network serialization (#10014)
* finish implementing all adventure components in codecs

* add some initial tests

* Add round trip tests for text and translatable components

* Add more round trip test data (score component is failing)

* Add more round trip test data

* Fix SCORE_COMPONENT_MAP_CODEC

* Improve test failure messages

* Add failure cases

* Add a couple more test data

* Make use of AdventureCodecs

* Update patches after rebase

* Squash changes into adventure patch

* Fix AT formatting

* update comment

---------

Co-authored-by: Jason Penilla <11360596+jpenilla@users.noreply.github.com>
2023-12-11 22:02:06 -08:00

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1.5 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Spottedleaf <Spottedleaf@users.noreply.github.com>
Date: Tue, 8 Aug 2023 17:29:33 -0700
Subject: [PATCH] Fix race condition on UpgradeData.BlockFixers class init
The CHUNKY_FIXERS field is modified during the constructors
of the BlockFixers, but the code that uses CHUNKY_FIXERS does
not properly ensure that BlockFixers has been initialised before
using it, leading to a possible race condition where instances of
BlockFixers are accessed before they have initialised correctly.
We can force the class to initialise fully before accessing the
field by calling any method on the class, and for convenience
we use values().
diff --git a/src/main/java/net/minecraft/world/level/chunk/UpgradeData.java b/src/main/java/net/minecraft/world/level/chunk/UpgradeData.java
index 0f94af3502ef517c33d04841a80ea2ace077f0af..f9c1012216928b16feb14f0bf78fb328a443a7ee 100644
--- a/src/main/java/net/minecraft/world/level/chunk/UpgradeData.java
+++ b/src/main/java/net/minecraft/world/level/chunk/UpgradeData.java
@@ -138,6 +138,7 @@ public class UpgradeData {
Fluid fluid = tick.type() == Fluids.EMPTY ? level.getFluidState(tick.pos()).getType() : tick.type();
level.scheduleTick(tick.pos(), fluid, tick.delay(), tick.priority());
});
+ UpgradeData.BlockFixers.values(); // Paper - force the class init so that we don't access CHUNKY_FIXERS before all BlockFixers are initialised
CHUNKY_FIXERS.forEach((logic) -> {
logic.processChunk(level);
});