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: 4ed5af5e SPIGOT-6956: Reduce differences caused by setKeepSpawnInMemory(false) 21fe78aa SPIGOT-6957: Bad default value for WorldCreator#generatorSettings ce373be6 PR-1022: Fix get HighestBlockAt in chunk snapshot
183 lines
10 KiB
Diff
183 lines
10 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: miclebrick <miclebrick@outlook.com>
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Date: Wed, 8 Aug 2018 15:30:52 -0400
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Subject: [PATCH] Add Early Warning Feature to WatchDog
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Detect when the server has been hung for a long duration, and start printing
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thread dumps at an interval until the point of crash.
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This will help diagnose what was going on in that time before the crash.
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diff --git a/src/main/java/com/destroystokyo/paper/PaperConfig.java b/src/main/java/com/destroystokyo/paper/PaperConfig.java
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index 9dba4eb0e9c4e4d974edaeaf41c370d3996dd94e..62671d6c04f973594a6ca95446774c4b5a78a575 100644
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--- a/src/main/java/com/destroystokyo/paper/PaperConfig.java
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+++ b/src/main/java/com/destroystokyo/paper/PaperConfig.java
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@@ -25,6 +25,7 @@ import org.bukkit.configuration.file.YamlConfiguration;
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import co.aikar.timings.Timings;
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import co.aikar.timings.TimingsManager;
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import org.spigotmc.SpigotConfig;
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+import org.spigotmc.WatchdogThread;
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public class PaperConfig {
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@@ -319,6 +320,14 @@ public class PaperConfig {
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}
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}
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+ public static int watchdogPrintEarlyWarningEvery = 5000;
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+ public static int watchdogPrintEarlyWarningDelay = 10000;
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+ private static void watchdogEarlyWarning() {
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+ watchdogPrintEarlyWarningEvery = getInt("settings.watchdog.early-warning-every", 5000);
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+ watchdogPrintEarlyWarningDelay = getInt("settings.watchdog.early-warning-delay", 10000);
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+ WatchdogThread.doStart(SpigotConfig.timeoutTime, SpigotConfig.restartOnCrash );
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+ }
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+
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public static int tabSpamIncrement = 1;
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public static int tabSpamLimit = 500;
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private static void tabSpamLimiters() {
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diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
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index 61edb76381a83f36d0ade1c35e9999eaad58abd2..432f1d6e5989f861e762a8b919a0048b58e77ce7 100644
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--- a/src/main/java/net/minecraft/server/MinecraftServer.java
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+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
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@@ -1098,6 +1098,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
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this.updateStatusIcon(this.status);
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// Spigot start
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+ org.spigotmc.WatchdogThread.hasStarted = true; // Paper
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Arrays.fill( recentTps, 20 );
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long start = System.nanoTime(), curTime, tickSection = start; // Paper - Further improve server tick loop
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lastTick = start - TICK_TIME; // Paper
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diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
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index 104162d1641499af3559e51fe9ad32b91785416a..8d429d2ebe63a429912bafe20eb24688aae939a1 100644
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--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
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+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
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@@ -904,6 +904,7 @@ public final class CraftServer implements Server {
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@Override
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public void reload() {
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+ org.spigotmc.WatchdogThread.hasStarted = false; // Paper - Disable watchdog early timeout on reload
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this.reloadCount++;
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this.configuration = YamlConfiguration.loadConfiguration(this.getConfigFile());
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this.commandsConfiguration = YamlConfiguration.loadConfiguration(this.getCommandsConfigFile());
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@@ -993,6 +994,7 @@ public final class CraftServer implements Server {
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this.enablePlugins(PluginLoadOrder.STARTUP);
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this.enablePlugins(PluginLoadOrder.POSTWORLD);
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this.getPluginManager().callEvent(new ServerLoadEvent(ServerLoadEvent.LoadType.RELOAD));
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+ org.spigotmc.WatchdogThread.hasStarted = true; // Paper - Disable watchdog early timeout on reload
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}
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@Override
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diff --git a/src/main/java/org/spigotmc/SpigotConfig.java b/src/main/java/org/spigotmc/SpigotConfig.java
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index b53e6955f35e1308814cdb31a5fa5f4d0c49493c..6f7b34f03e0d151e4da652b9ad73e0d7930fe5d3 100644
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--- a/src/main/java/org/spigotmc/SpigotConfig.java
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+++ b/src/main/java/org/spigotmc/SpigotConfig.java
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@@ -229,7 +229,7 @@ public class SpigotConfig
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SpigotConfig.restartScript = SpigotConfig.getString( "settings.restart-script", SpigotConfig.restartScript );
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SpigotConfig.restartMessage = SpigotConfig.transform( SpigotConfig.getString( "messages.restart", "Server is restarting" ) );
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SpigotConfig.commands.put( "restart", new RestartCommand( "restart" ) );
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- WatchdogThread.doStart( timeoutTime, restartOnCrash );
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+ //WatchdogThread.doStart( timeoutTime, restartOnCrash ); // Paper - moved to PaperConfig
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}
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public static boolean bungee;
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diff --git a/src/main/java/org/spigotmc/WatchdogThread.java b/src/main/java/org/spigotmc/WatchdogThread.java
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index 6e1fa4f0616ccfd258acd1b4f5b08fc0ad4c9529..a01a266a25e3267c94c20f8597b4b596efe20faa 100644
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--- a/src/main/java/org/spigotmc/WatchdogThread.java
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+++ b/src/main/java/org/spigotmc/WatchdogThread.java
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@@ -5,6 +5,7 @@ import java.lang.management.MonitorInfo;
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import java.lang.management.ThreadInfo;
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import java.util.logging.Level;
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import java.util.logging.Logger;
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+import com.destroystokyo.paper.PaperConfig;
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import net.minecraft.server.MinecraftServer;
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import org.bukkit.Bukkit;
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@@ -14,6 +15,10 @@ public class WatchdogThread extends Thread
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private static WatchdogThread instance;
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private long timeoutTime;
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private boolean restart;
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+ private final long earlyWarningEvery; // Paper - Timeout time for just printing a dump but not restarting
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+ private final long earlyWarningDelay; // Paper
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+ public static volatile boolean hasStarted; // Paper
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+ private long lastEarlyWarning; // Paper - Keep track of short dump times to avoid spamming console with short dumps
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private volatile long lastTick;
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private volatile boolean stopping;
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@@ -22,6 +27,8 @@ public class WatchdogThread extends Thread
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super( "Paper Watchdog Thread" );
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this.timeoutTime = timeoutTime;
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this.restart = restart;
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+ earlyWarningEvery = Math.min(PaperConfig.watchdogPrintEarlyWarningEvery, timeoutTime); // Paper
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+ earlyWarningDelay = Math.min(PaperConfig.watchdogPrintEarlyWarningDelay, timeoutTime); // Paper
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}
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private static long monotonicMillis()
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@@ -61,9 +68,18 @@ public class WatchdogThread extends Thread
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while ( !this.stopping )
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{
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//
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- if ( this.lastTick != 0 && this.timeoutTime > 0 && WatchdogThread.monotonicMillis() > this.lastTick + this.timeoutTime && !Boolean.getBoolean("disable.watchdog")) // Paper - Add property to disable
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+ // Paper start
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+ Logger log = Bukkit.getServer().getLogger();
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+ long currentTime = WatchdogThread.monotonicMillis();
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+ if ( this.lastTick != 0 && this.timeoutTime > 0 && currentTime > this.lastTick + this.earlyWarningEvery && !Boolean.getBoolean("disable.watchdog")) // Paper - Add property to disable
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{
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- Logger log = Bukkit.getServer().getLogger();
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+ boolean isLongTimeout = currentTime > lastTick + timeoutTime;
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+ // Don't spam early warning dumps
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+ if ( !isLongTimeout && (earlyWarningEvery <= 0 || !hasStarted || currentTime < lastEarlyWarning + earlyWarningEvery || currentTime < lastTick + earlyWarningDelay)) continue;
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+ if ( !isLongTimeout && MinecraftServer.getServer().hasStopped()) continue; // Don't spam early watchdog warnings during shutdown, we'll come back to this...
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+ lastEarlyWarning = currentTime;
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+ if (isLongTimeout) {
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+ // Paper end
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log.log( Level.SEVERE, "------------------------------" );
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log.log( Level.SEVERE, "The server has stopped responding! This is (probably) not a Paper bug." ); // Paper
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log.log( Level.SEVERE, "If you see a plugin in the Server thread dump below, then please report it to that author" );
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@@ -93,29 +109,45 @@ public class WatchdogThread extends Thread
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}
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}
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// Paper end
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+ } else
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+ {
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+ log.log(Level.SEVERE, "--- DO NOT REPORT THIS TO PAPER - THIS IS NOT A BUG OR A CRASH - " + Bukkit.getServer().getVersion() + " ---");
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+ log.log(Level.SEVERE, "The server has not responded for " + (currentTime - lastTick) / 1000 + " seconds! Creating thread dump");
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+ }
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+ // Paper end - Different message for short timeout
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log.log( Level.SEVERE, "------------------------------" );
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log.log( Level.SEVERE, "Server thread dump (Look for plugins here before reporting to Paper!):" ); // Paper
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WatchdogThread.dumpThread( ManagementFactory.getThreadMXBean().getThreadInfo( MinecraftServer.getServer().serverThread.getId(), Integer.MAX_VALUE ), log );
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log.log( Level.SEVERE, "------------------------------" );
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//
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+ // Paper start - Only print full dump on long timeouts
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+ if ( isLongTimeout )
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+ {
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log.log( Level.SEVERE, "Entire Thread Dump:" );
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ThreadInfo[] threads = ManagementFactory.getThreadMXBean().dumpAllThreads( true, true );
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for ( ThreadInfo thread : threads )
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{
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WatchdogThread.dumpThread( thread, log );
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}
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+ } else {
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+ log.log(Level.SEVERE, "--- DO NOT REPORT THIS TO PAPER - THIS IS NOT A BUG OR A CRASH ---");
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+ }
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+
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log.log( Level.SEVERE, "------------------------------" );
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+ if ( isLongTimeout )
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+ {
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if ( this.restart && !MinecraftServer.getServer().hasStopped() )
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{
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RestartCommand.restart();
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}
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break;
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+ } // Paper end
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}
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try
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{
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- sleep( 10000 );
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+ sleep( 1000 ); // Paper - Reduce check time to every second instead of every ten seconds, more consistent and allows for short timeout
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} catch ( InterruptedException ex )
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{
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interrupt();
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