PaperMC/patches/server/0741-Fix-chunks-refusing-to-unload-at-low-TPS.patch

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Spottedleaf <Spottedleaf@users.noreply.github.com>
Date: Mon, 1 Feb 2021 15:35:14 -0800
Subject: [PATCH] Fix chunks refusing to unload at low TPS
The full chunk future is appended to the chunk save future, but
when moving to unloaded ticket level it is not being completed with
the empty chunk access, so the chunk save must wait for the full
chunk future to complete. We can simply schedule to the immediate
executor to get this effect, rather than the main mailbox.
diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java
index e4005ead8dafb4ae02ad5bbfb8e7721dbc734758..cda41112ce58f4572c36c5d33e16cf13bc10b1ec 100644
--- a/src/main/java/net/minecraft/server/level/ChunkMap.java
+++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
@@ -1226,9 +1226,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
return chunk;
});
- }, (runnable) -> {
- this.mainThreadMailbox.tell(ChunkTaskPriorityQueueSorter.message(playerchunk, runnable));
- });
+ }, this.mainThreadExecutor); // Paper - queue to execute immediately so this doesn't delay chunk unloading
}
public int getTickingGenerated() {