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44 lines
2.7 KiB
Diff
44 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/ServerConnection.java b/src/main/java/net/minecraft/server/ServerConnection.java
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index 6e7c5756a2338f5e901fff0e75fa42a494a2e8ee..7abb122943b8a5ce0e888d16d1592a127bb9bb6f 100644
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--- a/src/main/java/net/minecraft/server/ServerConnection.java
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+++ b/src/main/java/net/minecraft/server/ServerConnection.java
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@@ -38,6 +38,15 @@ public class ServerConnection {
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public volatile boolean c;
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private final List<ChannelFuture> listeningChannels = Collections.synchronizedList(Lists.newArrayList());
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private final List<NetworkManager> connectedChannels = 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<NetworkManager> pending = new java.util.concurrent.ConcurrentLinkedQueue<>();
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+ private void addPending() {
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+ NetworkManager manager = null;
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+ while ((manager = pending.poll()) != null) {
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+ connectedChannels.add(manager);
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+ }
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+ }
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+ // Paper end
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public ServerConnection(MinecraftServer minecraftserver) {
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this.e = minecraftserver;
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@@ -72,7 +81,7 @@ public class ServerConnection {
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channel.pipeline().addLast("timeout", new ReadTimeoutHandler(30)).addLast("legacy_query", new LegacyPingHandler(ServerConnection.this)).addLast("splitter", new PacketSplitter()).addLast("decoder", new PacketDecoder(EnumProtocolDirection.SERVERBOUND)).addLast("prepender", new PacketPrepender()).addLast("encoder", new PacketEncoder(EnumProtocolDirection.CLIENTBOUND));
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NetworkManager networkmanager = new NetworkManager(EnumProtocolDirection.SERVERBOUND);
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- ServerConnection.this.connectedChannels.add(networkmanager);
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+ pending.add(networkmanager); // Paper
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channel.pipeline().addLast("packet_handler", networkmanager);
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networkmanager.setPacketListener(new HandshakeListener(ServerConnection.this.e, networkmanager));
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}
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@@ -111,6 +120,7 @@ public class ServerConnection {
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synchronized (this.connectedChannels) {
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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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