PaperMC/patches/server/0234-Add-Early-Warning-Feature-to-WatchDog.patch
Jake Potrebic de04cbced5
Updated Upstream (Bukkit/CraftBukkit) (#10034)
Upstream has released updates that appear to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing

Bukkit Changes:
f29cb801 Separate checkstyle-suppressions file is not required
86f99bbe SPIGOT-7540, PR-946: Add ServerTickManager API
d4119585 SPIGOT-6903, PR-945: Add BlockData#getMapColor
b7a2ed41 SPIGOT-7530, PR-947: Add Player#removeResourcePack
9dd56255 SPIGOT-7527, PR-944: Add WindCharge#explode()
994a6163 Attempt upgrade of resolver libraries

CraftBukkit Changes:
b3b43a6ad Add Checkstyle check for unused imports
13fb3358e SPIGOT-7544: Scoreboard#getEntries() doesn't get entries but class names
3dda99c06 SPIGOT-7540, PR-1312: Add ServerTickManager API
2ab4508c0 SPIGOT-6903, PR-1311: Add BlockData#getMapColor
1dbdbbed4 PR-1238: Remove unnecessary sign ticking
659728d2a MC-264285, SPIGOT-7439, PR-1237: Fix unbreakable flint and steel is completely consumed while igniting creeper
e37e29ce0 Increase outdated build delay
c00438b39 SPIGOT-7530, PR-1313: Add Player#removeResourcePack
492dd80ce SPIGOT-7527, PR-1310: Add WindCharge#explode()
e11fbb9d7 Upgrade MySQL driver
9f3a0bd2a Attempt upgrade of resolver libraries
60d16d7ca PR-1306: Centralize Bukkit and Minecraft entity conversion

Spigot Changes:
06d602e7 Rebuild patches
2023-12-16 18:09:28 -08:00

160 lines
9.9 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: miclebrick <miclebrick@outlook.com>
Date: Wed, 8 Aug 2018 15:30:52 -0400
Subject: [PATCH] Add Early Warning Feature to WatchDog
Detect when the server has been hung for a long duration, and start printing
thread dumps at an interval until the point of crash.
This will help diagnose what was going on in that time before the crash.
diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index 584dca7c8aa5fc3bc73101482acd6ad892019a3d..06d9cafeeedb3020c5e2313d32c6fe9285f99925 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -1075,6 +1075,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
this.status = this.buildServerStatus();
// Spigot start
+ org.spigotmc.WatchdogThread.hasStarted = true; // Paper
Arrays.fill( this.recentTps, 20 );
long tickSection = Util.getNanos(), curTime, tickCount = 1; // Paper
while (this.running) {
diff --git a/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java b/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
index fc2a55735b22f5a25d009a7157624fb0cdc853c0..adae2d7f9ced8ce6d2e15aafb8b53ef85e79b6d1 100644
--- a/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
+++ b/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
@@ -197,6 +197,7 @@ public class DedicatedServer extends MinecraftServer implements ServerInterface
// Paper start
paperConfigurations.initializeGlobalConfiguration(this.registryAccess());
paperConfigurations.initializeWorldDefaultsConfiguration(this.registryAccess());
+ org.spigotmc.WatchdogThread.doStart(org.spigotmc.SpigotConfig.timeoutTime, org.spigotmc.SpigotConfig.restartOnCrash);
io.papermc.paper.command.PaperCommands.registerCommands(this);
com.destroystokyo.paper.Metrics.PaperMetrics.startMetrics();
com.destroystokyo.paper.VersionHistoryManager.INSTANCE.getClass(); // load version history now
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
index 146b21e3d3b1432d7b14cda4a9462d77b30e5fe2..f8499f4a70fbbaa99df0cc73aff6405bbbb135ad 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
@@ -915,6 +915,7 @@ public final class CraftServer implements Server {
@Override
public void reload() {
+ org.spigotmc.WatchdogThread.hasStarted = false; // Paper - Disable watchdog early timeout on reload
this.reloadCount++;
this.configuration = YamlConfiguration.loadConfiguration(this.getConfigFile());
this.commandsConfiguration = YamlConfiguration.loadConfiguration(this.getCommandsConfigFile());
@@ -1004,6 +1005,7 @@ public final class CraftServer implements Server {
this.enablePlugins(PluginLoadOrder.STARTUP);
this.enablePlugins(PluginLoadOrder.POSTWORLD);
this.getPluginManager().callEvent(new ServerLoadEvent(ServerLoadEvent.LoadType.RELOAD));
+ org.spigotmc.WatchdogThread.hasStarted = true; // Paper - Disable watchdog early timeout on reload
}
@Override
diff --git a/src/main/java/org/spigotmc/SpigotConfig.java b/src/main/java/org/spigotmc/SpigotConfig.java
index 99c82b9c82770df22a043d1927a1ad820e95d724..1eafb92fdf3c6ddce5f5f847bd9034287e2d4b84 100644
--- a/src/main/java/org/spigotmc/SpigotConfig.java
+++ b/src/main/java/org/spigotmc/SpigotConfig.java
@@ -229,7 +229,7 @@ public class SpigotConfig
SpigotConfig.restartScript = SpigotConfig.getString( "settings.restart-script", SpigotConfig.restartScript );
SpigotConfig.restartMessage = SpigotConfig.transform( SpigotConfig.getString( "messages.restart", "Server is restarting" ) );
SpigotConfig.commands.put( "restart", new RestartCommand( "restart" ) );
- WatchdogThread.doStart( SpigotConfig.timeoutTime, SpigotConfig.restartOnCrash );
+ // WatchdogThread.doStart( SpigotConfig.timeoutTime, SpigotConfig.restartOnCrash ); // Paper - moved to after paper config initialization
}
public static boolean bungee;
diff --git a/src/main/java/org/spigotmc/WatchdogThread.java b/src/main/java/org/spigotmc/WatchdogThread.java
index e2bafc68e88c733873638ce7695b684d119f55da..230d55820778e84c1c8aa2b013ae0e5e35568ea1 100644
--- a/src/main/java/org/spigotmc/WatchdogThread.java
+++ b/src/main/java/org/spigotmc/WatchdogThread.java
@@ -14,6 +14,10 @@ public final class WatchdogThread extends io.papermc.paper.util.TickThread // Pa
private static WatchdogThread instance;
private long timeoutTime;
private boolean restart;
+ private final long earlyWarningEvery; // Paper - Timeout time for just printing a dump but not restarting
+ private final long earlyWarningDelay; // Paper
+ public static volatile boolean hasStarted; // Paper
+ private long lastEarlyWarning; // Paper - Keep track of short dump times to avoid spamming console with short dumps
private volatile long lastTick;
private volatile boolean stopping;
@@ -22,6 +26,8 @@ public final class WatchdogThread extends io.papermc.paper.util.TickThread // Pa
super( "Paper Watchdog Thread" );
this.timeoutTime = timeoutTime;
this.restart = restart;
+ earlyWarningEvery = Math.min(io.papermc.paper.configuration.GlobalConfiguration.get().watchdog.earlyWarningEvery, timeoutTime); // Paper
+ earlyWarningDelay = Math.min(io.papermc.paper.configuration.GlobalConfiguration.get().watchdog.earlyWarningDelay, timeoutTime); // Paper
}
private static long monotonicMillis()
@@ -61,9 +67,18 @@ public final class WatchdogThread extends io.papermc.paper.util.TickThread // Pa
while ( !this.stopping )
{
//
- if ( this.lastTick != 0 && this.timeoutTime > 0 && WatchdogThread.monotonicMillis() > this.lastTick + this.timeoutTime && !Boolean.getBoolean("disable.watchdog")) // Paper - Add property to disable
+ // Paper start
+ Logger log = Bukkit.getServer().getLogger();
+ long currentTime = WatchdogThread.monotonicMillis();
+ if ( this.lastTick != 0 && this.timeoutTime > 0 && currentTime > this.lastTick + this.earlyWarningEvery && !Boolean.getBoolean("disable.watchdog")) // Paper - Add property to disable
{
- Logger log = Bukkit.getServer().getLogger();
+ boolean isLongTimeout = currentTime > lastTick + timeoutTime;
+ // Don't spam early warning dumps
+ if ( !isLongTimeout && (earlyWarningEvery <= 0 || !hasStarted || currentTime < lastEarlyWarning + earlyWarningEvery || currentTime < lastTick + earlyWarningDelay)) continue;
+ if ( !isLongTimeout && MinecraftServer.getServer().hasStopped()) continue; // Don't spam early watchdog warnings during shutdown, we'll come back to this...
+ lastEarlyWarning = currentTime;
+ if (isLongTimeout) {
+ // Paper end
log.log( Level.SEVERE, "------------------------------" );
log.log( Level.SEVERE, "The server has stopped responding! This is (probably) not a Paper bug." ); // Paper
log.log( Level.SEVERE, "If you see a plugin in the Server thread dump below, then please report it to that author" );
@@ -93,30 +108,46 @@ public final class WatchdogThread extends io.papermc.paper.util.TickThread // Pa
}
}
// Paper end
+ } else
+ {
+ log.log(Level.SEVERE, "--- DO NOT REPORT THIS TO PAPER - THIS IS NOT A BUG OR A CRASH - " + Bukkit.getServer().getVersion() + " ---");
+ log.log(Level.SEVERE, "The server has not responded for " + (currentTime - lastTick) / 1000 + " seconds! Creating thread dump");
+ }
+ // Paper end - Different message for short timeout
log.log( Level.SEVERE, "------------------------------" );
log.log( Level.SEVERE, "Server thread dump (Look for plugins here before reporting to Paper!):" ); // Paper
io.papermc.paper.chunk.system.scheduling.ChunkTaskScheduler.dumpAllChunkLoadInfo(isLongTimeout); // Paper // Paper - rewrite chunk system
WatchdogThread.dumpThread( ManagementFactory.getThreadMXBean().getThreadInfo( MinecraftServer.getServer().serverThread.getId(), Integer.MAX_VALUE ), log );
log.log( Level.SEVERE, "------------------------------" );
//
+ // Paper start - Only print full dump on long timeouts
+ if ( isLongTimeout )
+ {
log.log( Level.SEVERE, "Entire Thread Dump:" );
ThreadInfo[] threads = ManagementFactory.getThreadMXBean().dumpAllThreads( true, true );
for ( ThreadInfo thread : threads )
{
WatchdogThread.dumpThread( thread, log );
}
+ } else {
+ log.log(Level.SEVERE, "--- DO NOT REPORT THIS TO PAPER - THIS IS NOT A BUG OR A CRASH ---");
+ }
+
log.log( Level.SEVERE, "------------------------------" );
+ if ( isLongTimeout )
+ {
if ( this.restart && !MinecraftServer.getServer().hasStopped() )
{
RestartCommand.restart();
}
break;
+ } // Paper end
}
try
{
- sleep( 10000 );
+ sleep( 1000 ); // Paper - Reduce check time to every second instead of every ten seconds, more consistent and allows for short timeout
} catch ( InterruptedException ex )
{
this.interrupt();