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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Spottedleaf <Spottedleaf@users.noreply.github.com>
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.
diff --git a/src/main/java/net/minecraft/world/level/Level.java b/src/main/java/net/minecraft/world/level/Level.java
index ed1fc466151ebebf7c3ac135c6893f4ea9a55a52..38bcf9f410e8a9d47c7d486c28dbc16a6225b650 100644
--- a/src/main/java/net/minecraft/world/level/Level.java
+++ b/src/main/java/net/minecraft/world/level/Level.java
@@ -352,7 +352,14 @@ public abstract class Level implements LevelAccessor, AutoCloseable {
@Override
public final LevelChunk getChunk(int chunkX, int chunkZ) { // Paper - final to help inline
- return (LevelChunk) this.getChunk(chunkX, chunkZ, ChunkStatus.FULL, true); // Paper - avoid a method jump
+ // Paper start - Perf: make sure loaded chunks get the inlined variant of this function
+ net.minecraft.server.level.ServerChunkCache cps = ((ServerLevel)this).getChunkSource();
+ LevelChunk ifLoaded = cps.getChunkAtIfLoadedImmediately(chunkX, chunkZ);
+ if (ifLoaded != null) {
+ return ifLoaded;
+ }
+ return (LevelChunk) cps.getChunk(chunkX, chunkZ, ChunkStatus.FULL, true); // Paper - avoid a method jump
+ // Paper end - Perf: make sure loaded chunks get the inlined variant of this function
}
// Paper start - if loaded
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