Paper/patches/server/0243-Add-Early-Warning-Feature-to-WatchDog.patch
Nassim Jahnke 26734e83b0
Updated Upstream (Bukkit/CraftBukkit/Spigot) (#7454)
* Updated Upstream (Bukkit/CraftBukkit/Spigot)

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:
8085edde SPIGOT-6918: Add SpawnCategory API and configurations for Axolotls
04c7e13c PR-719: Add Player Profile API
71564210 SPIGOT-6910: Add BlockDamageAbortEvent

CraftBukkit Changes:
febaa1c6 SPIGOT-6918: Add SpawnCategory API and configurations for Axolotls
9dafd109 Don't send updates over large distances
bdac46b0 SPIGOT-6782: EntityPortalEvent should not destroy entity when setTo() uses same world as getFrom()
8f361ece PR-1002: Add Player Profile API
911875d4 Increase outdated build delay
e5f8a767 SPIGOT-6917: Use main scoreboard for /trigger
a672a531 Clean up callBlockDamageEvent
8e1bdeef SPIGOT-6910: Add BlockDamageAbortEvent

Spigot Changes:
6edb62f3 Rebuild patches
7fbc6a1e Rebuild patches

* Updated Upstream (CraftBukkit)

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

CraftBukkit Changes:
de951355 SPIGOT-6927: Fix default value of spawn-limits in Worlds
2022-02-12 14:20:33 +01:00

183 Zeilen
10 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/com/destroystokyo/paper/PaperConfig.java b/src/main/java/com/destroystokyo/paper/PaperConfig.java
index 00dd9dab2b19f3e49f3b41c20eb96a84bfae1769..d9114c5fa141c37270398100db6bb2a8a8e4ed1e 100644
--- a/src/main/java/com/destroystokyo/paper/PaperConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperConfig.java
@@ -25,6 +25,7 @@ import org.bukkit.configuration.file.YamlConfiguration;
import co.aikar.timings.Timings;
import co.aikar.timings.TimingsManager;
import org.spigotmc.SpigotConfig;
+import org.spigotmc.WatchdogThread;
public class PaperConfig {
@@ -319,6 +320,14 @@ public class PaperConfig {
}
}
+ public static int watchdogPrintEarlyWarningEvery = 5000;
+ public static int watchdogPrintEarlyWarningDelay = 10000;
+ private static void watchdogEarlyWarning() {
+ watchdogPrintEarlyWarningEvery = getInt("settings.watchdog.early-warning-every", 5000);
+ watchdogPrintEarlyWarningDelay = getInt("settings.watchdog.early-warning-delay", 10000);
+ WatchdogThread.doStart(SpigotConfig.timeoutTime, SpigotConfig.restartOnCrash );
+ }
+
public static int tabSpamIncrement = 1;
public static int tabSpamLimit = 500;
private static void tabSpamLimiters() {
diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index e89f100e950c6fa85112a67daaa157de665b17cf..37ccbfc3b5ff47fac8cd878f9de5bccec84994e5 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -1085,6 +1085,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
this.updateStatusIcon(this.status);
// Spigot start
+ org.spigotmc.WatchdogThread.hasStarted = true; // Paper
Arrays.fill( recentTps, 20 );
long start = System.nanoTime(), curTime, tickSection = start; // Paper - Further improve server tick loop
lastTick = start - TICK_TIME; // Paper
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
index 7e8c50c3fd27e5f5a931f2d7263c55ede441aacc..17ec1302e06792835f57d97b7d406065522cba54 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
@@ -907,6 +907,7 @@ 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());
@@ -996,6 +997,7 @@ 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 b53e6955f35e1308814cdb31a5fa5f4d0c49493c..6f7b34f03e0d151e4da652b9ad73e0d7930fe5d3 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( timeoutTime, restartOnCrash );
+ //WatchdogThread.doStart( timeoutTime, restartOnCrash ); // Paper - moved to PaperConfig
}
public static boolean bungee;
diff --git a/src/main/java/org/spigotmc/WatchdogThread.java b/src/main/java/org/spigotmc/WatchdogThread.java
index 6e1fa4f0616ccfd258acd1b4f5b08fc0ad4c9529..a01a266a25e3267c94c20f8597b4b596efe20faa 100644
--- a/src/main/java/org/spigotmc/WatchdogThread.java
+++ b/src/main/java/org/spigotmc/WatchdogThread.java
@@ -5,6 +5,7 @@ import java.lang.management.MonitorInfo;
import java.lang.management.ThreadInfo;
import java.util.logging.Level;
import java.util.logging.Logger;
+import com.destroystokyo.paper.PaperConfig;
import net.minecraft.server.MinecraftServer;
import org.bukkit.Bukkit;
@@ -14,6 +15,10 @@ public class WatchdogThread extends Thread
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 +27,8 @@ public class WatchdogThread extends Thread
super( "Paper Watchdog Thread" );
this.timeoutTime = timeoutTime;
this.restart = restart;
+ earlyWarningEvery = Math.min(PaperConfig.watchdogPrintEarlyWarningEvery, timeoutTime); // Paper
+ earlyWarningDelay = Math.min(PaperConfig.watchdogPrintEarlyWarningDelay, timeoutTime); // Paper
}
private static long monotonicMillis()
@@ -61,9 +68,18 @@ public class WatchdogThread extends Thread
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" );
@@ -93,29 +109,45 @@ public class WatchdogThread extends Thread
}
}
// 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
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 )
{
interrupt();