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From 0b6e33b6561edbc1426fe841e946b158e730a33c Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Fri, 27 May 2016 21:41:26 -0400
Subject: [PATCH] Ensure Chunks never ever load async
Safely pushes the operation to main thread, then back to the posting thread
diff --git a/src/main/java/org/bukkit/craftbukkit/chunkio/ChunkIOExecutor.java b/src/main/java/org/bukkit/craftbukkit/chunkio/ChunkIOExecutor.java
index 7b7a3d01b..9aaca21a7 100644
--- a/src/main/java/org/bukkit/craftbukkit/chunkio/ChunkIOExecutor.java
+++ b/src/main/java/org/bukkit/craftbukkit/chunkio/ChunkIOExecutor.java
@@ -4,6 +4,7 @@ import com.destroystokyo.paper.PaperConfig;
import net.minecraft.server.Chunk;
import net.minecraft.server.ChunkProviderServer;
import net.minecraft.server.ChunkRegionLoader;
+import net.minecraft.server.MCUtil; // Paper
import net.minecraft.server.World;
import org.bukkit.craftbukkit.util.AsynchronousExecutor;
@@ -14,7 +15,7 @@ public class ChunkIOExecutor {
private static final AsynchronousExecutor<QueuedChunk, Chunk, Runnable, RuntimeException> instance = new AsynchronousExecutor<QueuedChunk, Chunk, Runnable, RuntimeException>(new ChunkIOProvider(), BASE_THREADS);
public static Chunk syncChunkLoad(World world, ChunkRegionLoader loader, ChunkProviderServer provider, int x, int z) {
- return instance.getSkipQueue(new QueuedChunk(x, z, loader, world, provider));
+ return MCUtil.ensureMain("Async Chunk Load", () -> instance.getSkipQueue(new QueuedChunk(x, z, loader, world, provider))); // Paper
}
public static void queueChunkLoad(World world, ChunkRegionLoader loader, ChunkProviderServer provider, int x, int z, Runnable runnable) {
diff --git a/src/main/java/org/bukkit/craftbukkit/chunkio/ChunkIOProvider.java b/src/main/java/org/bukkit/craftbukkit/chunkio/ChunkIOProvider.java
index b5efb9c3f..ef9529add 100644
--- a/src/main/java/org/bukkit/craftbukkit/chunkio/ChunkIOProvider.java
+++ b/src/main/java/org/bukkit/craftbukkit/chunkio/ChunkIOProvider.java
@@ -35,8 +35,8 @@ class ChunkIOProvider implements AsynchronousExecutor.CallBackProvider<QueuedChu
// sync stuff
public void callStage2(QueuedChunk queuedChunk, Chunk chunk) throws RuntimeException {
- if (chunk == null) {
- // If the chunk loading failed just do it synchronously (may generate)
+ if (chunk == null || queuedChunk.provider.chunks.containsKey(ChunkCoordIntPair.a(queuedChunk.x, queuedChunk.z))) { // Paper - also call original if it was already loaded
+ // If the chunk loading failed (or was already loaded for some reason) just do it synchronously (may generate)
queuedChunk.provider.originalGetChunkAt(queuedChunk.x, queuedChunk.z);
return;
}
--
2.12.2
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