38 lines
1.9 KiB
Diff
38 lines
1.9 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Spottedleaf <Spottedleaf@users.noreply.github.com>
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Date: Sun, 21 Mar 2021 17:32:47 -0700
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Subject: [PATCH] Correctly handle recursion for chunkholder updates
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If a chunk ticket level is brought up while unloading it would
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cause a recursive call which would handle the increase but then
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the caller would think the chunk would be unloaded.
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diff --git a/src/main/java/net/minecraft/server/level/ChunkHolder.java b/src/main/java/net/minecraft/server/level/ChunkHolder.java
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index 823451570e02ee75bfce1c106779a0502187fcea..d4ea81824acdc1220616b24ea0f465db97f4a343 100644
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--- a/src/main/java/net/minecraft/server/level/ChunkHolder.java
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+++ b/src/main/java/net/minecraft/server/level/ChunkHolder.java
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@@ -619,8 +619,10 @@ public class ChunkHolder {
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playerchunkmap.onFullChunkStatusChange(this.pos, playerchunk_state);
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}
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+ protected long updateCount; // Paper - correctly handle recursion
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protected void updateFutures(ChunkMap chunkStorage, Executor executor) {
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io.papermc.paper.util.TickThread.ensureTickThread("Async ticket level update"); // Paper
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+ long updateCount = ++this.updateCount; // Paper - correctly handle recursion
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ChunkStatus chunkstatus = ChunkHolder.getStatus(this.oldTicketLevel);
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ChunkStatus chunkstatus1 = ChunkHolder.getStatus(this.ticketLevel);
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boolean flag = this.oldTicketLevel <= ChunkMap.MAX_CHUNK_DISTANCE;
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@@ -662,6 +664,12 @@ public class ChunkHolder {
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// Run callback right away if the future was already done
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chunkStorage.callbackExecutor.run();
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+ // Paper start - correctly handle recursion
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+ if (this.updateCount != updateCount) {
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+ // something else updated ticket level for us.
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+ return;
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+ }
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+ // Paper end - correctly handle recursion
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}
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// CraftBukkit end
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CompletableFuture completablefuture;
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