Folia/patches/server/0013-Skip-worldstate-access-when-waking-players-up-during.patch
Spottedleaf 6928284a56 Update Paper and add configurable region shift
The region shift is configurable under `grid-exponent`, which
allows setting the region shift to any value in [0, 31]. Note
that values above 6 affect the lock shift, as the lock shift
currently is computed as max(ticket shift = 6, region shift).
The shift is left configurable for now as the lower default
shift of 2 may have negative performance impacts.

The default region shift has been adjusted to 2 from 4, and
the empty chunk buffer has been reduced to 8 from 16. These
changes reduce, but do not eliminate, player spread
requirements. The previous block range was around ~1500 blocks
at VD = 10, but is now closer to ~900 blocks at VD = 10. This
roughly reduces the area that each player uses in the regioniser
by 2.5x.
2023-12-30 17:20:19 -08:00

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1.8 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Spottedleaf <Spottedleaf@users.noreply.github.com>
Date: Sun, 23 Apr 2023 07:38:50 -0700
Subject: [PATCH] Skip worldstate access when waking players up during data
deserialization
In general, worldstate read/write is unacceptable during
data deserialization and is racey even in Vanilla. But in Folia,
some accesses may throw and as such we need to fix this directly.
diff --git a/src/main/java/net/minecraft/server/level/ServerPlayer.java b/src/main/java/net/minecraft/server/level/ServerPlayer.java
index e479129a977721fc8061be968eefab4daa407f5c..3d2b059254fdc08d1e4f9281946028a46884d7c8 100644
--- a/src/main/java/net/minecraft/server/level/ServerPlayer.java
+++ b/src/main/java/net/minecraft/server/level/ServerPlayer.java
@@ -644,7 +644,7 @@ public class ServerPlayer extends Player {
this.getBukkitEntity().readExtraData(nbt); // CraftBukkit
if (this.isSleeping()) {
- this.stopSleeping();
+ this.stopSleepingRaw(); // Folia - do not modify or read worldstate during data deserialization
}
// CraftBukkit start
diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java
index 46b835f65ec64720efa54cc524f16a3fa536e90b..abf455d165004240e0b5fd96543f7da7c520e729 100644
--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
+++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
@@ -4360,6 +4360,11 @@ public abstract class LivingEntity extends Entity implements Attackable {
}
});
+ // Folia start - separate out
+ this.stopSleepingRaw();
+ }
+ public void stopSleepingRaw() {
+ // Folia end - separate out
Vec3 vec3d = this.position();
this.setPose(Pose.STANDING);