Paper/patches/server/0242-Add-Early-Warning-Feature-to-WatchDog.patch
Jason Penilla 0fa2a949ae
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:
8503c3c9 #621: Add HumanEntity#getItemInUse and Material#getSlipperiness
248deb09 #622: Add methods to check if item is the breed item for an entity
2ce691d8 Clarify Player#breakBlock only works for blocks in the same world
5dcdd48e SPIGOT-6514: Small Dripleaf block data is missing half property
cc9610b7 #619: Add Player#breakBlock()
862bc475 Fix bad merge of SPIGOT-6502 fix
989bb0c1 Downgrade SnakeYAML due to issues with comments parsing
1dff62ae Fix inverted visual fire docs

CraftBukkit Changes:
40caacc8 SPIGOT-6526: World entities are not populated when plugin onEnable is called
c9a92ad0 SPIGOT-6536: Marker position not set on spawn
20d3e57c #855: Add HumanEntity#getItemInUse and Material#getSlipperiness
d9c69b44 SPIGOT-6529: Fix BundleMeta#setItems
8bd43be5 SPIGOT-6535: PlayerGameModeChangeEvent event incorrectly reports old gamemode
4ece3ff3 #856: Add methods to check if item is the breed item for an entity
dd4bec5f Add additional validation to Player#breakBlock
bc835ae6 SPIGOT-6532: Fix Entity#setGlowing
384e116e Restore 1.16.5 behaviour of InventoryDragEvent being called even when a single item is 'dragged' to its own slot
b42e708c Fix new map colors rendering as transparent
cfe7fecf SPIGOT-6524: Inventory desync when InventoryClickEvent is cancelled
eeae1b19 SPIGOT-6522: ItemStack on cursor is always AIR
7490724d Fix missing PlayerEditBookEvent
06875f76 SPIGOT-6513: Placing ItemStack in Inventory causes InventoryAction.NOTHING
27835bde SPIGOT-6519: Fix end gateway teleports
4ac634ad SPIGOT-6515: "Un-waterlogging" throws UnsupportedOperationException in some cases
da425fa2 SPIGOT-6518: Anvils falling onto dripstone can sometimes crash server
50530da9 SPIGOT-6514: Small Dripleaf block data is missing half property
6fdecf20 #853: Implement Player#breakBlock()
4db9c49f SPIGOT-6510: Bukkit#createMap throws NullPointerException
89e2b127 SPIGOT-6517: Spider jockey crash on dripstone
cbf2f678 SPIGOT-6508: Rename conflicted getServer
74575d48 SPIGOT-6506: Fix crash with custom inventories
a3df386f Fix NPE with Entity.getNearbyEntities
d747f8ed Fix NPE with World.getNearbyEntities
4d2c7800 Fix second usage of worldGenSettings just in case
5182f923 SPIGOT-6504: Fix generating fresh worlds

Spigot Changes:
66f9d3c1 Rebuild patches
191e4971 Rebuild patches
a09c0bb6 Restore Spigot experience merging
2021-06-12 22:13:07 -07:00

183 lines
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 bd508025b771424c942fd856c31d520b6f548082..62621562137cba4804f0465c58d25ca2786328e5 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 {
@@ -297,6 +298,14 @@ 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 050b27be1c25764d65e5340149718e858b3aeb2e..880fc4e346549a5d7ed627244bdfd284705ad2fc 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -1076,6 +1076,7 @@ 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 b12fb31d9a601c1781b0cb0a24bdd9cbcc4f382b..16645b4c096936c4d5c00f335e5cdb7dd4a4e2bd 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
@@ -810,6 +810,7 @@ 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());
@@ -926,6 +927,7 @@ 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 314fa148fe783a0558ba00b068e0bf69a91577e1..66a3395a7a0cc8eb1b3cd24761bed9d8c3349f4c 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();