46 lines
2.7 KiB
Diff
46 lines
2.7 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 522aa6a0b4b365a78cf3fce2604d71fb88d30388..e174d9803e557470068f7893260d55a042888517 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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@@ -61,6 +61,15 @@ 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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@@ -96,7 +105,8 @@ public class ServerConnectionListener {
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int j = ServerConnectionListener.this.server.getRateLimitPacketsPerSecond();
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Object object = j > 0 ? new RateKickingConnection(j) : new Connection(PacketFlow.SERVERBOUND);
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- ServerConnectionListener.this.connections.add((Connection) object); // CraftBukkit - decompile error
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+ // ServerConnectionListener.this.connections.add((Connection) object); // CraftBukkit - decompile error
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+ pending.add((Connection) object); // Paper
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channel.pipeline().addLast("packet_handler", (ChannelHandler) object);
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((Connection) object).setListener(new ServerHandshakePacketListenerImpl(ServerConnectionListener.this.server, (Connection) object));
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}
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@@ -155,6 +165,7 @@ 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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