Paper/Spigot-Server-Patches/0407-Optimise-getChunkAt-calls-for-loaded-chunks.patch
Mariell Hoversholm 654b792caf Updated Upstream (CraftBukkit)
Upstream has released updates that appears to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing

CraftBukkit Changes:
a339310c #755: Fix NPE when calling getInventory() for virtual EnderChests
2577f9bf Increase outdated build delay
1dabfdc8 #754: Fix pre-1.16 serialized SkullMeta being broken on 1.16+, losing textures
2020-09-27 11:04:51 -04:00

67 lines
2.8 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Spottedleaf <Spottedleaf@users.noreply.github.com>
Date: Sat, 25 Jan 2020 17:04:35 -0800
Subject: [PATCH] Optimise getChunkAt calls for loaded chunks
bypass the need to get a player chunk, then get the either,
then unwrap it...
diff --git a/src/main/java/net/minecraft/server/ChunkProviderServer.java b/src/main/java/net/minecraft/server/ChunkProviderServer.java
index dce9c62c0cf37a37994537b74dfdc2286c60fae2..f7055ee0f2d497502f6a8b03544a55956f49e647 100644
--- a/src/main/java/net/minecraft/server/ChunkProviderServer.java
+++ b/src/main/java/net/minecraft/server/ChunkProviderServer.java
@@ -448,6 +448,12 @@ public class ChunkProviderServer extends IChunkProvider {
return this.getChunkAt(i, j, chunkstatus, flag);
}, this.serverThreadQueue).join();
} else {
+ // Paper start - optimise for loaded chunks
+ Chunk ifLoaded = this.getChunkAtIfLoadedMainThread(i, j);
+ if (ifLoaded != null) {
+ return ifLoaded;
+ }
+ // Paper end
GameProfilerFiller gameprofilerfiller = this.world.getMethodProfiler();
gameprofilerfiller.c("getChunk");
@@ -498,39 +504,7 @@ public class ChunkProviderServer extends IChunkProvider {
if (Thread.currentThread() != this.serverThread) {
return null;
} else {
- this.world.getMethodProfiler().c("getChunkNow");
- long k = ChunkCoordIntPair.pair(i, j);
-
- for (int l = 0; l < 4; ++l) {
- if (k == this.cachePos[l] && this.cacheStatus[l] == ChunkStatus.FULL) {
- IChunkAccess ichunkaccess = this.cacheChunk[l];
-
- return ichunkaccess instanceof Chunk ? (Chunk) ichunkaccess : null;
- }
- }
-
- PlayerChunk playerchunk = this.getChunk(k);
-
- if (playerchunk == null) {
- return null;
- } else {
- Either<IChunkAccess, PlayerChunk.Failure> either = (Either) playerchunk.b(ChunkStatus.FULL).getNow(null); // CraftBukkit - decompile error
-
- if (either == null) {
- return null;
- } else {
- IChunkAccess ichunkaccess1 = (IChunkAccess) either.left().orElse(null); // CraftBukkit - decompile error
-
- if (ichunkaccess1 != null) {
- this.a(k, ichunkaccess1, ChunkStatus.FULL);
- if (ichunkaccess1 instanceof Chunk) {
- return (Chunk) ichunkaccess1;
- }
- }
-
- return null;
- }
- }
+ return this.getChunkAtIfLoadedMainThread(i, j); // Paper - optimise for loaded chunks
}
}