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f37381ea8a
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.
47 lines
2.2 KiB
Diff
47 lines
2.2 KiB
Diff
From d852e8603fe42022eadb6c3098ca1fc5d105f51f Mon Sep 17 00:00:00 2001
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From: Spottedleaf <Spottedleaf@users.noreply.github.com>
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Date: Mon, 13 May 2019 21:10:59 -0700
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Subject: [PATCH] Fix CraftServer#isPrimaryThread and MinecraftServer
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isMainThread
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md_5 changed it so he could shut down the server asynchronously
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from watchdog, although we have patches that prevent that type
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of behavior for this exact reason.
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md_5 also placed code in PlayerConnectionUtils that would have
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solved https://bugs.mojang.com/browse/MC-142590, making the change
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to MinecraftServer#isMainThread irrelevant.
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By reverting his change to MinecraftServer#isMainThread packet
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handling that should have been handled synchronously will be handled
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synchronously when the server gets shut down.
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diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
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index 249eaf56bc0..45882ee30f5 100644
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--- a/src/main/java/net/minecraft/server/MinecraftServer.java
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+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
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@@ -2217,7 +2217,7 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
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// CraftBukkit start
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@Override
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public boolean isMainThread() {
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- return super.isMainThread() || this.isStopped(); // CraftBukkit - MC-142590
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+ return super.isMainThread() /*|| this.isStopped()*/; // CraftBukkit - MC-142590 // Paper - causes issues elsewhere
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}
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@Deprecated
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diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
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index 811e676e4f9..14cc12d772f 100644
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--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
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+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
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@@ -1706,7 +1706,7 @@ public final class CraftServer implements Server {
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@Override
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public boolean isPrimaryThread() {
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- return Thread.currentThread().equals(console.serverThread) || console.hasStopped() || !org.spigotmc.AsyncCatcher.enabled; // All bets are off if we have shut down (e.g. due to watchdog)
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+ return Thread.currentThread().equals(console.serverThread); // Paper - Fix issues with detecting main thread properly
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}
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@Override
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--
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2.26.2
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