PaperMC/patches/server/0741-Do-not-allow-ticket-level-changes-when-updating-chun.patch
2021-12-22 10:02:31 -08:00

40 lines
2.2 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Spottedleaf <Spottedleaf@users.noreply.github.com>
Date: Sun, 20 Jun 2021 00:08:13 -0700
Subject: [PATCH] Do not allow ticket level changes when updating chunk ticking
state
This WILL cause state corruption if it happens. So, don't
allow it.
diff --git a/src/main/java/net/minecraft/server/level/ChunkHolder.java b/src/main/java/net/minecraft/server/level/ChunkHolder.java
index 6bfc705cbf3d8efdb0926df4e1bc6948f9052440..1f602d50f3212078490c0092ceefd3b17e0b1532 100644
--- a/src/main/java/net/minecraft/server/level/ChunkHolder.java
+++ b/src/main/java/net/minecraft/server/level/ChunkHolder.java
@@ -418,7 +418,13 @@ public class ChunkHolder {
CompletableFuture<Void> completablefuture1 = new CompletableFuture();
completablefuture1.thenRunAsync(() -> {
+ // Paper start - do not allow ticket level changes
+ boolean unloadingBefore = this.chunkMap.unloadingPlayerChunk;
+ this.chunkMap.unloadingPlayerChunk = true;
+ try {
+ // Paper end - do not allow ticket level changes
playerchunkmap.onFullChunkStatusChange(this.pos, playerchunk_state);
+ } finally { this.chunkMap.unloadingPlayerChunk = unloadingBefore; } // Paper - do not allow ticket level changes
}, executor);
this.pendingFullStateConfirmation = completablefuture1;
completablefuture.thenAccept((either) -> {
@@ -435,7 +441,12 @@ public class ChunkHolder {
private void demoteFullChunk(ChunkMap playerchunkmap, ChunkHolder.FullChunkStatus playerchunk_state) {
this.pendingFullStateConfirmation.cancel(false);
+ // Paper start - do not allow ticket level changes
+ boolean unloadingBefore = this.chunkMap.unloadingPlayerChunk;
+ this.chunkMap.unloadingPlayerChunk = true;
+ try { // Paper end - do not allow ticket level changes
playerchunkmap.onFullChunkStatusChange(this.pos, playerchunk_state);
+ } finally { this.chunkMap.unloadingPlayerChunk = unloadingBefore; } // Paper - do not allow ticket level changes
}
protected long updateCount; // Paper - correctly handle recursion