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Paper-Old/Spigot-Server-Patches/0458-Don-t-load-chunks-when-attempting-to-unload-a-chunk.patch
Aikar f37381ea8a
Optimize Network Manager to not need synchronization
Removes synchronization from sending packets
Makes normal packet sends no longer need to be wrapped and queued like it use to work.
Adds more packet queue immunities on top of keep alive to let the following scenarios go out
without delay:
  - Keep Alive
  - Chat
  - Kick
  - All of the packets during the Player Joined World event

Hoping that latter one helps join timeout issues more too for slow connections.

Removes processing packet queue off of main thread
  - for the few cases where it is allowed, order is not necessary nor
    should it even be happening concurrently in first place (handshaking/login/status)

Ensures packets sent asynchronously are dispatched on main thread

This helps ensure safety for ProtocolLib as packet listeners
are commonly accessing world state. This will allow you to schedule
a packet to be sent async, but itll be dispatched sync for packet
listeners to process.

This should solve some deadlock risks

This may provide a decent performance improvement because thread synchronization incurs a cache reset
so by avoiding ever entering a synchronized block, we get to avoid that, and packet sending is a really
hot activity.
2020-05-06 05:28:47 -04:00

33 Zeilen
1.6 KiB
Diff

From 438f8e07931fd9c3536a62fe8aad4fb0b1e288d1 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Wed, 8 Apr 2020 21:07:08 -0400
Subject: [PATCH] Don't load chunks when attempting to unload a chunk
Big Brain Logic
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
index b70c0fd977c..eb7b48422e0 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
@@ -473,7 +473,7 @@ public class CraftWorld implements World {
@Override
public boolean unloadChunkRequest(int x, int z) {
org.spigotmc.AsyncCatcher.catchOp("chunk unload"); // Spigot
- net.minecraft.server.IChunkAccess chunk = world.getChunkProvider().getChunkAt(x, z, ChunkStatus.FULL, false);
+ net.minecraft.server.IChunkAccess chunk = world.getChunkProvider().getChunkAtIfLoadedImmediately(x, z); // Paper
if (chunk != null) {
world.getChunkProvider().removeTicket(TicketType.PLUGIN, chunk.getPos(), 1, Unit.INSTANCE);
}
@@ -483,7 +483,7 @@ public class CraftWorld implements World {
private boolean unloadChunk0(int x, int z, boolean save) {
org.spigotmc.AsyncCatcher.catchOp("chunk unload"); // Spigot
- net.minecraft.server.Chunk chunk = (net.minecraft.server.Chunk) world.getChunkProvider().getChunkAt(x, z, ChunkStatus.FULL, false);
+ net.minecraft.server.Chunk chunk = world.getChunkProvider().getChunkAtIfLoadedImmediately(x, z); // Paper
if (chunk == null) {
return true;
}
--
2.26.2