Paper/Spigot-Server-Patches/0434-Optimise-getChunkAt-calls-for-loaded-chunks.patch

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From 5802854a423626f7ea7cb60a6974997beb999c56 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 e5af40e9f..0de82202e 100644
--- a/src/main/java/net/minecraft/server/ChunkProviderServer.java
+++ b/src/main/java/net/minecraft/server/ChunkProviderServer.java
@@ -354,6 +354,12 @@ 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");
@@ -404,39 +410,7 @@ 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
}
}
diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
index e97b3f103..913511388 100644
--- a/src/main/java/net/minecraft/server/World.java
+++ b/src/main/java/net/minecraft/server/World.java
Updated Upstream (Bukkit/CraftBukkit/Spigot) 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 Bukkit Changes: 93e39ce1 Clarify documentation regarding getMaterial with legacyName = true c3aeaea0 Improve dependency tracker 14c9d275 Add support for transitive depends in load access warning c8afe560 SPIGOT-5526: Add EntityEnterBlockEvent 6bb6f07d SPIGOT-5548: Show error that hints towards plugins misusing reflection ed75537d SPIGOT-5546: Fix bad depend access using wrong provider in message 4e4c0ee9 Fix buggy classloader warning triggering for all classes 89586a4c Print warning when loading classes from depends that have not been specified d4fe9680 Fix bug where disablePlugin could remove ConfigurationSerializable classes from other plugins 85e683b7 Add additional checkstyle checks 612fd8e1 Correct max page count in BookMeta docs fa8a9781 Correct max title length in BookMeta docs CraftBukkit Changes: ab13a117 SPIGOT-5550: Cancelled ProjectileLaunchEvent still plays sound for eggs 44016b1d SPIGOT-5538: Using javaw to run GUI prints input error e653ae76 SPIGOT-5526: Call EntityEnterBlockEvent for bees trying to enter hives 6515ea49 SPIGOT-5537: Bee nests generated by growing trees near flower have no bees d82b3149 Remove unused CraftWorld.getId method 10763a88 Change some block == AIR checks to isAir to catch CAVE_AIR Spigot Changes: f2c1cd15 Rebuild patches bcd458ad Reformat patches
2020-01-28 20:43:57 +01:00
@@ -255,6 +255,14 @@ public abstract class World implements GeneratorAccess, AutoCloseable {
@Override
public Chunk getChunkAt(int i, int j) {
+ // Paper start - optimise this for loaded chunks
+ if (Thread.currentThread() == this.serverThread) {
+ Chunk ifLoaded = ((WorldServer) this).getChunkProvider().getChunkAtIfLoadedMainThread(i, j);
+ if (ifLoaded != null) {
+ return ifLoaded;
+ }
+ }
+ // Paper end
return (Chunk) this.getChunkAt(i, j, ChunkStatus.FULL);
}
--
2.25.0