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While it wasn't really "broken" before, if plugins use NMS (which they really should't be) and mess with entity management themselves, and get it wrong, they could ultimately corrupt our state expectations. I've been unable to reproduce any issues locally, but these changes are the result of me analyzing the code pretty deeply and seeing about how to make it more durable to abnormal usage. Any servers seeing oddities, please run with -Ddebug.entities=true and send me any logs triggered.
79 lines
No EOL
4.4 KiB
Diff
79 lines
No EOL
4.4 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Wed, 29 Aug 2018 21:59:22 -0400
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Subject: [PATCH] Optimize getChunkIfLoaded type calls
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Uses optimized check to avoid major locks and large method.
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Will improve inlining across many hot methods.
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Improve getBrightness to not do double chunk map lookups.
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diff --git a/src/main/java/net/minecraft/server/ChunkProviderServer.java b/src/main/java/net/minecraft/server/ChunkProviderServer.java
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index 41926a361b..186cfda7e4 100644
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--- a/src/main/java/net/minecraft/server/ChunkProviderServer.java
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+++ b/src/main/java/net/minecraft/server/ChunkProviderServer.java
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@@ -0,0 +0,0 @@ public class ChunkProviderServer implements IChunkProvider {
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continue;
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}
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- Chunk neighbor = this.getChunkAt(chunk.locX + x, chunk.locZ + z, false, false);
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+ Chunk neighbor = this.chunks.get(chunk.chunkKey); // Paper
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if (neighbor != null) {
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neighbor.setNeighborUnloaded(-x, -z);
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chunk.setNeighborUnloaded(x, z);
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diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
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index 14f419deb8..630ebfb37c 100644
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--- a/src/main/java/net/minecraft/server/World.java
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+++ b/src/main/java/net/minecraft/server/World.java
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@@ -0,0 +0,0 @@ public abstract class World implements IEntityAccess, GeneratorAccess, IIBlockAc
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}
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public Chunk getChunkIfLoaded(int x, int z) {
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- return ((ChunkProviderServer) this.chunkProvider).getChunkAt(x, z, false, false);
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+ return ((ChunkProviderServer) this.chunkProvider).chunks.get(ChunkCoordIntPair.a(x, z)); // Paper - optimize getChunkIfLoaded
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}
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protected World(IDataManager idatamanager, @Nullable PersistentCollection persistentcollection, WorldData worlddata, WorldProvider worldprovider, MethodProfiler methodprofiler, boolean flag, ChunkGenerator gen, org.bukkit.World.Environment env) {
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@@ -0,0 +0,0 @@ public abstract class World implements IEntityAccess, GeneratorAccess, IIBlockAc
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blockposition = new BlockPosition(blockposition.getX(), 0, blockposition.getZ());
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}
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- return !blockposition.isValidLocation() ? enumskyblock.c : (!this.isLoaded(blockposition) ? enumskyblock.c : this.getChunkAtWorldCoords(blockposition).getBrightness(enumskyblock, blockposition)); // Paper
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+ Chunk chunk; // Paper
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+ return !blockposition.isValidLocation() ? enumskyblock.c : ((chunk = this.getChunkIfLoaded(blockposition)) == null ? enumskyblock.c : chunk.getBrightness(enumskyblock, blockposition)); // Paper - optimize ifChunkLoaded
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}
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public void a(EnumSkyBlock enumskyblock, BlockPosition blockposition, int i) {
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@@ -0,0 +0,0 @@ public abstract class World implements IEntityAccess, GeneratorAccess, IIBlockAc
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if (blockposition.isInvalidYLocation()) { // Paper
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return false;
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} else {
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- Chunk chunk = this.chunkProvider.getChunkAt(blockposition.getX() >> 4, blockposition.getZ() >> 4, false, false);
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+ Chunk chunk = this.getChunkIfLoaded(blockposition.getX() >> 4, blockposition.getZ() >> 4); // Paper - optimize ifLoaded
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return chunk != null && !chunk.isEmpty();
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}
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diff --git a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
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index 72eb8ed4f4..7e52859c1d 100644
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--- a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
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+++ b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
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@@ -0,0 +0,0 @@ public class CraftWorld implements World {
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return false;
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}
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- net.minecraft.server.Chunk chunk = world.getChunkProvider().getChunkAt(x, z, false, false);
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+ net.minecraft.server.Chunk chunk = world.getChunkIfLoaded(x, z); // Paper - optimize ifLaoded
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if (chunk != null) {
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world.getChunkProvider().unload(chunk);
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}
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@@ -0,0 +0,0 @@ public class CraftWorld implements World {
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private boolean unloadChunk0(int x, int z, boolean save) {
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Boolean result = MCUtil.ensureMain("Unload Chunk", () -> { // Paper - Ensure never async
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- net.minecraft.server.Chunk chunk = world.getChunkProvider().getChunkAt(x, z, false, false);
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+ net.minecraft.server.Chunk chunk = world.getChunkIfLoaded(x, z); // Paper - optimize ifLoaded
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if (chunk == null) {
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return true;
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}
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--
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