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Add 5 second short dumps to watchdog (#1314)

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miclebrick 2018-08-08 15:31:29 -04:00 committed by Zach Brown
parent e861035fc4
commit b369e70970
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1
LICENSE.md
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@ -36,4 +36,5 @@ stonar96 <minecraft.stonar96@gmail.com>
Hugo Manrique <hugmanrique@gmail.com>
Andrew Steinborn <git@steinborn.me>
willies952002 <admin@domnian.com>
MicleBrick <miclebrick@outlook.com>
```

87
Spigot-Server-Patches/0349-Add-5-second-short-dumps-to-watchdog.patch Normal file
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@ -0,0 +1,87 @@
From a30613e82fe3e0e0759e03c7d6b4b69d60e005f0 Mon Sep 17 00:00:00 2001
From: miclebrick <miclebrick@outlook.com>
Date: Wed, 8 Aug 2018 15:30:52 -0400
Subject: [PATCH] Add 5 second short dumps to watchdog
diff --git a/src/main/java/org/spigotmc/WatchdogThread.java b/src/main/java/org/spigotmc/WatchdogThread.java
index 57a4748a3..815c3e664 100644
--- a/src/main/java/org/spigotmc/WatchdogThread.java
+++ b/src/main/java/org/spigotmc/WatchdogThread.java
@@ -13,8 +13,10 @@ public class WatchdogThread extends Thread
private static WatchdogThread instance;
private final long timeoutTime;
+ private final long shortTimeout; // Paper - Timeout time for just printing a dump but not restarting
private final boolean restart;
private volatile long lastTick;
+ private long lastShortDump; // Paper - Keep track of short dump times to avoid spamming console with short dumps
private volatile boolean stopping;
private WatchdogThread(long timeoutTime, boolean restart)
@@ -22,6 +24,7 @@ public class WatchdogThread extends Thread
super( "Paper Watchdog Thread" );
this.timeoutTime = timeoutTime;
this.restart = restart;
+ shortTimeout = Math.min(5000, timeoutTime); // Paper - Make short timeout the lower of 5 seconds, and timeout time
}
public static void doStart(int timeoutTime, boolean restart)
@@ -52,9 +55,19 @@ public class WatchdogThread extends Thread
while ( !stopping )
{
//
- if ( lastTick != 0 && System.currentTimeMillis() > lastTick + timeoutTime && !Boolean.getBoolean("disable.watchdog")) // Paper - Add property to disable
+ long currentTime = System.currentTimeMillis(); // Paper - do we REALLY need to call this method multiple times?
+ if ( lastTick != 0 && currentTime > lastTick + shortTimeout && !Boolean.getBoolean("disable.watchdog") ) // Paper - Add property to disable and short timeout
{
+ // Paper start
+ boolean isLongTimeout = currentTime > lastTick + timeoutTime;
+ // Don't spam short dumps
+ if ( !isLongTimeout && currentTime < lastShortDump + shortTimeout ) continue;
+ lastShortDump = currentTime;
+ // Paper end
Logger log = Bukkit.getServer().getLogger();
+ // Paper start - Different message when it's a short timeout
+ if ( isLongTimeout )
+ {
log.log( Level.SEVERE, "The server has stopped responding!" );
log.log( Level.SEVERE, "Please report this to https://github.com/PaperMC/Paper/issues" );
log.log( Level.SEVERE, "Be sure to include ALL relevant console errors and Minecraft crash reports" );
@@ -79,11 +92,19 @@ public class WatchdogThread extends Thread
}
}
// Paper end
+ } else
+ {
+ log.log( Level.SEVERE, "The server has not responded for " + shortTimeout / 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!):" );
dumpThread( ManagementFactory.getThreadMXBean().getThreadInfo( MinecraftServer.getServer().primaryThread.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 )
@@ -97,11 +118,12 @@ public class WatchdogThread extends Thread
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();
--
2.18.0