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ea0b63992c
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: 4727d326 Don't let Sign extend SignSide, mark API as experimental 9b29bdcc PR-845: Add preliminary support for multi sided signs CraftBukkit Changes: b346a5f6d PR-1170: Add preliminary support for multi sided signs 86c816189 Update SQLite version d9324b4bc Fix addition of custom smithing trim / transform recipes Spigot Changes: 7d7b241e Rebuild patches
161 lines
9.9 KiB
Diff
161 lines
9.9 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/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
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index 274f3a213e60c9b67dbc43c8b53efb676b8bd41e..387c423dfe69a3310f8e7aa3dbb7faafc9501e50 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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@@ -1052,6 +1052,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
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this.status = this.buildServerStatus();
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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/net/minecraft/server/dedicated/DedicatedServer.java b/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
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index e6826cd0a596f063e8737dcde3c8c6c5b3f71970..1a2607d1b257cea65c82c661a6b3d46c1526a775 100644
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--- a/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
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+++ b/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
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@@ -197,6 +197,7 @@ public class DedicatedServer extends MinecraftServer implements ServerInterface
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// Paper start
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paperConfigurations.initializeGlobalConfiguration();
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paperConfigurations.initializeWorldDefaultsConfiguration();
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+ org.spigotmc.WatchdogThread.doStart(org.spigotmc.SpigotConfig.timeoutTime, org.spigotmc.SpigotConfig.restartOnCrash);
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io.papermc.paper.command.PaperCommands.registerCommands(this);
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com.destroystokyo.paper.Metrics.PaperMetrics.startMetrics();
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com.destroystokyo.paper.VersionHistoryManager.INSTANCE.getClass(); // load version history now
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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 d43c27328801f1b830f2438fe1d7a11d44c08885..d351c9076cdc8e6c491e5afeaafda59182c169d6 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 ddc5f2d9aa7dda6aff132392927e3d7e3674dbff..3ac48dafe2300ff4cf4591569fec9ce4916503cd 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 after paper config initialization
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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 a9897c494b3dc56d900356d74030359832febbaa..b47d043144c499b1499f6b4be5a16a3f75c9fcb8 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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@@ -14,6 +14,10 @@ public final class WatchdogThread extends io.papermc.paper.util.TickThread // Pa
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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 +26,8 @@ public final class WatchdogThread extends io.papermc.paper.util.TickThread // Pa
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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(io.papermc.paper.configuration.GlobalConfiguration.get().watchdog.earlyWarningEvery, timeoutTime); // Paper
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+ earlyWarningDelay = Math.min(io.papermc.paper.configuration.GlobalConfiguration.get().watchdog.earlyWarningDelay, timeoutTime); // Paper
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}
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private static long monotonicMillis()
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@@ -61,9 +67,18 @@ public final class WatchdogThread extends io.papermc.paper.util.TickThread // Pa
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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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@@ -93,30 +108,46 @@ public final class WatchdogThread extends io.papermc.paper.util.TickThread // Pa
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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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io.papermc.paper.chunk.system.scheduling.ChunkTaskScheduler.dumpAllChunkLoadInfo(isLongTimeout); // Paper // Paper - rewrite chunk system
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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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