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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Spottedleaf <spottedleaf@spottedleaf.dev>
Date: Sun, 20 Sep 2020 16:10:49 -0700
Subject: [PATCH] Make sure inlined getChunkAt has inlined logic for loaded
chunks
Tux did some profiling some time ago and showed that the
previous getChunkAt method which had inlined logic for loaded
chunks did get inlined, but the standard CPS.getChunkAt
method was not inlined.
Paper recently reverted this optimisation, so it's been reintroduced
here.
diff --git a/src/main/java/net/minecraft/world/level/Level.java b/src/main/java/net/minecraft/world/level/Level.java
index 06035b728a66a63582c34c85096bada1588bfaa6..843c36a8272ea5affe0a4f3baa9e15823ad74059 100644
--- a/src/main/java/net/minecraft/world/level/Level.java
+++ b/src/main/java/net/minecraft/world/level/Level.java
@@ -353,6 +353,15 @@ public abstract class Level implements LevelAccessor, AutoCloseable {
@Override
public final LevelChunk getChunk(int chunkX, int chunkZ) { // Paper - final to help inline
+ // Paper start - make sure loaded chunks get the inlined variant of this function
+ net.minecraft.server.level.ServerChunkCache cps = ((ServerLevel)this).getChunkSource();
+ if (cps.mainThread == Thread.currentThread()) {
+ LevelChunk ifLoaded = cps.getChunkAtIfLoadedMainThread(chunkX, chunkZ);
+ if (ifLoaded != null) {
+ return ifLoaded;
+ }
+ }
+ // Paper end - make sure loaded chunks get the inlined variant of this function
return (LevelChunk) this.getChunk(chunkX, chunkZ, ChunkStatus.FULL, true); // Paper - avoid a method jump
}
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