45 lines
		
	
	
	
		
			2.6 KiB
			
		
	
	
	
		
			Diff
		
	
	
	
	
	
			
		
		
	
	
			45 lines
		
	
	
	
		
			2.6 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: Mon, 16 May 2016 23:19:16 -0400
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Subject: [PATCH] Avoid blocking on Network Manager creation
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Per Paper issue 294
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diff --git a/src/main/java/net/minecraft/server/network/ServerConnectionListener.java b/src/main/java/net/minecraft/server/network/ServerConnectionListener.java
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index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
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--- a/src/main/java/net/minecraft/server/network/ServerConnectionListener.java
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+++ b/src/main/java/net/minecraft/server/network/ServerConnectionListener.java
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@@ -0,0 +0,0 @@ public class ServerConnectionListener {
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     public volatile boolean running;
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     private final List<ChannelFuture> channels = Collections.synchronizedList(Lists.newArrayList());
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     final List<Connection> connections = Collections.synchronizedList(Lists.newArrayList());
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+    // Paper start - prevent blocking on adding a new network manager while the server is ticking
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+    private final java.util.Queue<Connection> pending = new java.util.concurrent.ConcurrentLinkedQueue<>();
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+    private final void addPending() {
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+        Connection manager = null;
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+        while ((manager = pending.poll()) != null) {
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+            connections.add(manager);
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+        }
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+    }
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+    // Paper end
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     public ServerConnectionListener(MinecraftServer server) {
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         this.server = server;
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@@ -0,0 +0,0 @@ public class ServerConnectionListener {
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                     int j = ServerConnectionListener.this.server.getRateLimitPacketsPerSecond();
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                     Connection object = j > 0 ? new RateKickingConnection(j) : new Connection(PacketFlow.SERVERBOUND); // CraftBukkit - decompile error
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-                    ServerConnectionListener.this.connections.add(object);
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+                    //ServerConnectionListener.this.connections.add(object); // Paper
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+                    pending.add(object); // Paper
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                     ((Connection) object).configurePacketHandler(channelpipeline);
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                     ((Connection) object).setListenerForServerboundHandshake(new ServerHandshakePacketListenerImpl(ServerConnectionListener.this.server, (Connection) object));
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                 }
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@@ -0,0 +0,0 @@ public class ServerConnectionListener {
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         synchronized (this.connections) {
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             // Spigot Start
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+            this.addPending(); // Paper
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             // This prevents players from 'gaming' the server, and strategically relogging to increase their position in the tick order
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             if ( org.spigotmc.SpigotConfig.playerShuffle > 0 && MinecraftServer.currentTick % org.spigotmc.SpigotConfig.playerShuffle == 0 )
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             {
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