PaperMC/patches/server/0756-Correctly-handle-recursion-for-chunkholder-updates.patch
Nassim Jahnke f44d237de9
Updated Upstream (CraftBukkit) (#6504)
Upstream has released updates that appear to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing

CraftBukkit Changes:
5be41fb8 SPIGOT-6720: Fix bed explosion checks
09b99daf SPIGOT-6722: Close entity manager when unloading world
3a9561bf SPIGOT-6686: Changes in MaximumRepairCost for Anvil Rename cause inconsistency
2021-08-27 11:51:18 +02:00

37 lines
1.9 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Spottedleaf <Spottedleaf@users.noreply.github.com>
Date: Sun, 21 Mar 2021 17:32:47 -0700
Subject: [PATCH] Correctly handle recursion for chunkholder updates
If a chunk ticket level is brought up while unloading it would
cause a recursive call which would handle the increase but then
the caller would think the chunk would be unloaded.
diff --git a/src/main/java/net/minecraft/server/level/ChunkHolder.java b/src/main/java/net/minecraft/server/level/ChunkHolder.java
index e844ac574e4b94580a14027c130374f1287f7324..844a0e1ac3a6480c8d7b49debaada2c698432405 100644
--- a/src/main/java/net/minecraft/server/level/ChunkHolder.java
+++ b/src/main/java/net/minecraft/server/level/ChunkHolder.java
@@ -624,8 +624,10 @@ public class ChunkHolder {
playerchunkmap.onFullChunkStatusChange(this.pos, playerchunk_state);
}
+ protected long updateCount; // Paper - correctly handle recursion
protected void updateFutures(ChunkMap chunkStorage, Executor executor) {
ensureTickThread("Async ticket level update"); // Paper
+ long updateCount = ++this.updateCount; // Paper - correctly handle recursion
ChunkStatus chunkstatus = ChunkHolder.getStatus(this.oldTicketLevel);
ChunkStatus chunkstatus1 = ChunkHolder.getStatus(this.ticketLevel);
boolean flag = this.oldTicketLevel <= ChunkMap.MAX_CHUNK_DISTANCE;
@@ -667,6 +669,12 @@ public class ChunkHolder {
// Run callback right away if the future was already done
chunkStorage.callbackExecutor.run();
+ // Paper start - correctly handle recursion
+ if (this.updateCount != updateCount) {
+ // something else updated ticket level for us.
+ return;
+ }
+ // Paper end - correctly handle recursion
}
// CraftBukkit end
CompletableFuture completablefuture;