Paper/patches/server/0329-Remote-Connections-shouldn-t-hold-up-shutdown.patch
Bjarne Koll c5a10665b8
Remove wall-time / unused skip tick protection (#11412)
Spigot still maintains some partial implementation of "tick skipping", a
practice in which the MinecraftServer.currentTick field is updated not
by an increment of one per actual tick, but instead set to
System.currentTimeMillis() / 50. This behaviour means that the tracked
tick may "skip" a tick value in case a previous tick took more than the
expected 50ms.

To compensate for this in important paths, spigot/craftbukkit
implements "wall-time". Instead of incrementing/decrementing ticks on
block entities/entities by one for each call to their tick() method,
they instead increment/decrement important values, like
an ItemEntity's age or pickupDelay, by the difference of
`currentTick - lastTick`, where `lastTick` is the value of
`currentTick` during the last tick() call.

These "fixes" however do not play nicely with minecraft's simulation
distance as entities/block entities implementing the above behaviour
would "catch up" their values when moving from a non-ticking chunk to a
ticking one as their `lastTick` value remains stuck on the last tick in
a ticking chunk and hence lead to a large "catch up" once ticked again.

Paper completely removes the "tick skipping" behaviour (See patch
"Further-improve-server-tick-loop"), making the above precautions
completely unnecessary, which also rids paper of the previous described
incompatibility with non-ticking chunks.
2024-09-19 16:36:07 +02:00

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2.0 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Tue, 31 Mar 2020 03:50:42 -0400
Subject: [PATCH] Remote Connections shouldn't hold up shutdown
Bugs in the connection logic appears to leave stale connections even, preventing shutdown
diff --git a/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java b/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
index b15cee6f21ff300b596922a8eed35a5f8a89fe22..d6dc8c983d26ce89f17a990be4284fdc78ad164b 100644
--- a/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
+++ b/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
@@ -416,11 +416,11 @@ public class DedicatedServer extends MinecraftServer implements ServerInterface
}
if (this.rconThread != null) {
- this.rconThread.stop();
+ this.rconThread.stopNonBlocking(); // Paper - don't wait for remote connections
}
if (this.queryThreadGs4 != null) {
- this.queryThreadGs4.stop();
+ // this.remoteStatusListener.stop(); // Paper - don't wait for remote connections
}
System.exit(0); // CraftBukkit
diff --git a/src/main/java/net/minecraft/server/rcon/thread/RconThread.java b/src/main/java/net/minecraft/server/rcon/thread/RconThread.java
index 594fbb033b63b8c9fb8752b1fcc78f8e9f7a2a83..c12d7db2b048a327c0e8f398848cd3a9bce0ebce 100644
--- a/src/main/java/net/minecraft/server/rcon/thread/RconThread.java
+++ b/src/main/java/net/minecraft/server/rcon/thread/RconThread.java
@@ -104,6 +104,14 @@ public class RconThread extends GenericThread {
this.clients.clear();
}
+ // Paper start - don't wait for remote connections
+ public void stopNonBlocking() {
+ this.running = false;
+ for (RconClient client : this.clients) {
+ client.running = false;
+ }
+ }
+ // Paper end - don't wait for remote connections
private void closeSocket(ServerSocket socket) {
LOGGER.debug("closeSocket: {}", socket);