From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Spottedleaf 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 d17c2bcc1537f2a7eb575984b06c5da1bb511e6b..89c9deb19a6ad80e8e70246b7728c2c583c545b6 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 }