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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Sun, 12 Apr 2020 15:50:48 -0400
Subject: [PATCH] Improved Watchdog Support
Forced Watchdog Crash support and Improve Async Shutdown
If the request to shut down the server is received while we are in
a watchdog hang, immediately treat it as a crash and begin the shutdown
process. Shutdown process is now improved to also shutdown cleanly when
not using restart scripts either.
If a server is deadlocked, a server owner can send SIGUP (or any other signal
the JVM understands to shut down as it currently does) and the watchdog
will no longer need to wait until the full timeout, allowing you to trigger
a close process and try to shut the server down gracefully, saving player and
world data.
Previously there was no way to trigger this outside of waiting for a full watchdog
timeout, which may be set to a really long time...
Additionally, fix everything to do with shutting the server down asynchronously.
Previously, nearly everything about the process was fragile and unsafe. Main might
not have actually been frozen, and might still be manipulating state.
Or, some reuest might ask main to do something in the shutdown but main is dead.
Or worse, other things might start closing down items such as the Console or Thread Pool
before we are fully shutdown.
This change tries to resolve all of these issues by moving everything into the stop
method and guaranteeing only one thread is stopping the server.
We then issue Thread Death to the main thread of another thread initiates the stop process.
We have to ensure Thread Death propagates correctly though to stop main completely.
This is to ensure that if main isn't truely stuck, it's not manipulating state we are trying to save.
This also moves all plugins who register "delayed init" tasks to occur just before "Done" so they
are properly accounted for and wont trip watchdog on init.
diff --git a/src/main/java/com/destroystokyo/paper/Metrics.java b/src/main/java/com/destroystokyo/paper/Metrics.java
index e257d6b36e0e78dac5b8320017d92776171e1bb0..24641501aeae0f2c2c5ce877775c7b971fb051bf 100644
--- a/src/main/java/com/destroystokyo/paper/Metrics.java
+++ b/src/main/java/com/destroystokyo/paper/Metrics.java
@@ -86,6 +86,9 @@ public class Metrics {
timer.scheduleAtFixedRate(new TimerTask() {
@Override
public void run() {
+ if (MinecraftServer.getServer().hasStopped()) {
+ return;
+ }
submitData();
}
}, 1000 * 60 * 5, 1000 * 60 * 30);
diff --git a/src/main/java/net/minecraft/server/CrashReport.java b/src/main/java/net/minecraft/server/CrashReport.java
index 95e6a6de7ccfc4445d0ac19c5f874c0d533b1712..cc6e6f245ee5e73bd570cf42381bf55ee0b364d3 100644
--- a/src/main/java/net/minecraft/server/CrashReport.java
+++ b/src/main/java/net/minecraft/server/CrashReport.java
@@ -257,6 +257,7 @@ public class CrashReport {
}
public static CrashReport a(Throwable throwable, String s) {
+ if (throwable instanceof ThreadDeath) com.destroystokyo.paper.util.SneakyThrow.sneaky(throwable); // Paper
while (throwable instanceof CompletionException && throwable.getCause() != null) {
throwable = throwable.getCause();
}
diff --git a/src/main/java/net/minecraft/server/DedicatedServer.java b/src/main/java/net/minecraft/server/DedicatedServer.java
index 87753a94792af94454f76a2beb1ab9f1027f514f..4c561181a977fd0244325880bb6a8cd6a54dcacc 100644
--- a/src/main/java/net/minecraft/server/DedicatedServer.java
+++ b/src/main/java/net/minecraft/server/DedicatedServer.java
@@ -242,7 +242,7 @@ public class DedicatedServer extends MinecraftServer implements IMinecraftServer
long j = SystemUtils.getMonotonicNanos() - i;
String s = String.format(Locale.ROOT, "%.3fs", (double) j / 1.0E9D);
- DedicatedServer.LOGGER.info("Done ({})! For help, type \"help\"", s);
+ //DedicatedServer.LOGGER.info("Done ({})! For help, type \"help\"", s); // Paper moved to after init
if (dedicatedserverproperties.announcePlayerAchievements != null) {
((GameRules.GameRuleBoolean) this.getGameRules().get(GameRules.ANNOUNCE_ADVANCEMENTS)).a(dedicatedserverproperties.announcePlayerAchievements, (MinecraftServer) this);
}
@@ -368,6 +368,7 @@ public class DedicatedServer extends MinecraftServer implements IMinecraftServer
//this.remoteStatusListener.b(); // Paper - don't wait for remote connections
}
+ hasFullyShutdown = true; // Paper
System.exit(0); // CraftBukkit
}
@@ -696,7 +697,7 @@ public class DedicatedServer extends MinecraftServer implements IMinecraftServer
@Override
public void stop() {
super.stop();
- SystemUtils.h();
+ //SystemUtils.h(); // Paper - moved into super
}
@Override
diff --git a/src/main/java/net/minecraft/server/IAsyncTaskHandler.java b/src/main/java/net/minecraft/server/IAsyncTaskHandler.java
index 63fdae15ccbef0c39718b320dbd096794bcfa3b4..6beefff203ed6e448898eb5b2e95800def868381 100644
--- a/src/main/java/net/minecraft/server/IAsyncTaskHandler.java
+++ b/src/main/java/net/minecraft/server/IAsyncTaskHandler.java
@@ -135,6 +135,7 @@ public abstract class IAsyncTaskHandler<R extends Runnable> implements Mailbox<R
try {
r0.run();
} catch (Exception exception) {
+ if (exception.getCause() instanceof ThreadDeath) throw exception; // Paper
IAsyncTaskHandler.LOGGER.fatal("Error executing task on {}", this.bh(), exception);
}
diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index 04eb2af28f9843ef7641f5464d2a043c696de864..d9ed9df3021dab1f5ee0a51215a002253ac1e34c 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -159,7 +159,7 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
public int autosavePeriod;
public boolean serverAutoSave = false; // Paper
public CommandDispatcher vanillaCommandDispatcher;
- private boolean forceTicks;
+ public boolean forceTicks; // Paper
// CraftBukkit end
// Spigot start
public static final int TPS = 20;
@@ -169,6 +169,8 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
public final SlackActivityAccountant slackActivityAccountant = new SlackActivityAccountant();
// Spigot end
+ public volatile Thread shutdownThread; // Paper
+
public static <S extends MinecraftServer> S a(Function<Thread, S> function) {
AtomicReference<S> atomicreference = new AtomicReference();
Thread thread = new Thread(() -> {
@@ -737,6 +739,7 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
// CraftBukkit start
private boolean hasStopped = false;
+ public volatile boolean hasFullyShutdown = false; // Paper
private final Object stopLock = new Object();
public final boolean hasStopped() {
synchronized (stopLock) {
@@ -749,10 +752,22 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
// CraftBukkit start - prevent double stopping on multiple threads
synchronized(stopLock) {
if (hasStopped) return;
+ shutdownThread = Thread.currentThread();
hasStopped = true;
+ org.spigotmc.WatchdogThread.doStop(); // Paper
+ // Paper start - kill main thread, and kill it hard
+ if (!isMainThread()) {
+ while (this.getThread().isAlive()) {
+ this.getThread().stop();
+ try {
+ Thread.sleep(1);
+ } catch (InterruptedException e) {}
+ }
+ }
+ // Paper end
}
// CraftBukkit end
- MinecraftServer.LOGGER.info("Stopping server");
+ MinecraftServer.LOGGER.info("Stopping server (Ignore any thread death message you see! - DO NOT REPORT THREAD DEATH TO PAPER)"); // Paper
MinecraftTimings.stopServer(); // Paper
// CraftBukkit start
if (this.server != null) {
@@ -816,7 +831,18 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
this.getUserCache().c(false); // Paper
}
// Spigot end
+ // Paper start - move final shutdown items here
+ LOGGER.info("Flushing Chunk IO");
com.destroystokyo.paper.io.PaperFileIOThread.Holder.INSTANCE.close(true, true); // Paper
+ LOGGER.info("Closing Thread Pool");
+ SystemUtils.shutdownServerThreadPool(); // Paper
+ LOGGER.info("Closing Server");
+ try {
+ net.minecrell.terminalconsole.TerminalConsoleAppender.close(); // Paper - Use TerminalConsoleAppender
+ } catch (Exception e) {
+ }
+ this.exit();
+ // Paper end
}
public String getServerIp() {
@@ -909,6 +935,7 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
protected void v() {
try {
+ long serverStartTime = SystemUtils.getMonotonicNanos(); // Paper
if (this.init()) {
this.nextTick = SystemUtils.getMonotonicMillis();
this.serverPing.setMOTD(new ChatComponentText(this.motd));
@@ -916,6 +943,18 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
this.a(this.serverPing);
// Spigot start
+ // Paper start - move done tracking
+ LOGGER.info("Running delayed init tasks");
+ this.server.getScheduler().mainThreadHeartbeat(this.ticks); // run all 1 tick delay tasks during init,
+ // this is going to be the first thing the tick process does anyways, so move done and run it after
+ // everything is init before watchdog tick.
+ // anything at 3+ won't be caught here but also will trip watchdog....
+ // tasks are default scheduled at -1 + delay, and first tick will tick at 1
+ String doneTime = String.format(java.util.Locale.ROOT, "%.3fs", (double) (SystemUtils.getMonotonicNanos() - serverStartTime) / 1.0E9D);
+ LOGGER.info("Done ({})! For help, type \"help\"", doneTime);
+ // Paper end
+
+ org.spigotmc.WatchdogThread.tick(); // Paper
org.spigotmc.WatchdogThread.hasStarted = true; // Paper
Arrays.fill( recentTps, 20 );
long start = System.nanoTime(), curTime, tickSection = start; // Paper - Further improve server tick loop
@@ -971,6 +1010,12 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
this.a((CrashReport) null);
}
} catch (Throwable throwable) {
+ // Paper start
+ if (throwable instanceof ThreadDeath) {
+ MinecraftServer.LOGGER.error("Main thread terminated by WatchDog due to hard crash", throwable);
+ return;
+ }
+ // Paper end
MinecraftServer.LOGGER.error("Encountered an unexpected exception", throwable);
// Spigot Start
if ( throwable.getCause() != null )
@@ -1002,14 +1047,14 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
} catch (Throwable throwable1) {
MinecraftServer.LOGGER.error("Exception stopping the server", throwable1);
} finally {
- org.spigotmc.WatchdogThread.doStop(); // Spigot
+ //org.spigotmc.WatchdogThread.doStop(); // Spigot // Paper - move into stop
// CraftBukkit start - Restore terminal to original settings
try {
- net.minecrell.terminalconsole.TerminalConsoleAppender.close(); // Paper - Use TerminalConsoleAppender
+ //net.minecrell.terminalconsole.TerminalConsoleAppender.close(); // Paper - Move into stop
} catch (Exception ignored) {
}
// CraftBukkit end
- this.exit();
+ //this.exit(); // Paper - moved into stop
}
}
@@ -1065,6 +1110,12 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
@Override
protected TickTask postToMainThread(Runnable runnable) {
+ // Paper start - anything that does try to post to main during watchdog crash, run on watchdog
+ if (this.hasStopped && Thread.currentThread().equals(shutdownThread)) {
+ runnable.run();
+ runnable = () -> {};
+ }
+ // Paper end
return new TickTask(this.ticks, runnable);
}
@@ -1307,6 +1358,7 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
try {
crashreport = CrashReport.a(throwable, "Exception ticking world");
} catch (Throwable t) {
+ if (throwable instanceof ThreadDeath) { throw (ThreadDeath)throwable; } // Paper
throw new RuntimeException("Error generating crash report", t);
}
// Spigot End
@@ -1757,7 +1809,8 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
this.resourcePackRepository.a(collection);
this.saveData.a(a(this.resourcePackRepository));
datapackresources.i();
- this.getPlayerList().savePlayers();
+ if (Thread.currentThread() != this.serverThread) return; // Paper
+ //this.getPlayerList().savePlayers(); // Paper - we don't need to do this
this.getPlayerList().reload();
this.customFunctionData.a(this.dataPackResources.a());
this.ak.a(this.dataPackResources.h());
diff --git a/src/main/java/net/minecraft/server/PlayerChunkMap.java b/src/main/java/net/minecraft/server/PlayerChunkMap.java
index bb4d54ebee573964cf3026888da108584b12972f..09f94bd242318155dbb46e12224ad3e47eed40cf 100644
--- a/src/main/java/net/minecraft/server/PlayerChunkMap.java
+++ b/src/main/java/net/minecraft/server/PlayerChunkMap.java
@@ -486,6 +486,7 @@ public class PlayerChunkMap extends IChunkLoader implements PlayerChunk.d {
MutableBoolean mutableboolean = new MutableBoolean();
do {
+ boolean isShuttingDown = world.getMinecraftServer().hasStopped(); // Paper
mutableboolean.setFalse();
list.stream().map((playerchunk) -> {
CompletableFuture completablefuture;
diff --git a/src/main/java/net/minecraft/server/PlayerList.java b/src/main/java/net/minecraft/server/PlayerList.java
index 6f6d1d4c733faa80045fb63269b16ba127c2b616..2602c326cf8d3516162fcc08f0f40ba4ee5f6a16 100644
--- a/src/main/java/net/minecraft/server/PlayerList.java
+++ b/src/main/java/net/minecraft/server/PlayerList.java
@@ -429,7 +429,7 @@ public abstract class PlayerList {
cserver.getPluginManager().callEvent(playerQuitEvent);
entityplayer.getBukkitEntity().disconnect(playerQuitEvent.getQuitMessage());
- entityplayer.playerTick(); // SPIGOT-924
+ if (server.isMainThread()) entityplayer.playerTick(); // SPIGOT-924 // Paper - don't tick during emergency shutdowns (Watchdog)
// CraftBukkit end
// Paper start - Remove from collideRule team if needed
diff --git a/src/main/java/net/minecraft/server/SystemUtils.java b/src/main/java/net/minecraft/server/SystemUtils.java
index 5579044782f155f587de1e2ea5115bde6053f722..e8075ad6b5395c7dce12741fe85dafd13f72cf41 100644
--- a/src/main/java/net/minecraft/server/SystemUtils.java
+++ b/src/main/java/net/minecraft/server/SystemUtils.java
@@ -119,6 +119,7 @@ public class SystemUtils {
return SystemUtils.f;
}
+ public static void shutdownServerThreadPool() { h(); } // Paper - OBFHELPER
public static void h() {
a(SystemUtils.e);
a(SystemUtils.f);
diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
index 93df6a29035bb3cc96409b145a2e1433d38bbe99..418ba04a837ee2b17cc679edd35ba09830c01f28 100644
--- a/src/main/java/net/minecraft/server/World.java
+++ b/src/main/java/net/minecraft/server/World.java
@@ -846,6 +846,7 @@ public abstract class World implements GeneratorAccess, AutoCloseable {
gameprofilerfiller.exit();
} catch (Throwable throwable) {
+ if (throwable instanceof ThreadDeath) throw throwable; // Paper
// Paper start - Prevent tile entity and entity crashes
String msg = "TileEntity threw exception at " + tileentity.world.getWorld().getName() + ":" + tileentity.position.getX() + "," + tileentity.position.getY() + "," + tileentity.position.getZ();
System.err.println(msg);
@@ -921,6 +922,7 @@ public abstract class World implements GeneratorAccess, AutoCloseable {
try {
consumer.accept(entity);
} catch (Throwable throwable) {
+ if (throwable instanceof ThreadDeath) throw throwable; // Paper
// Paper start - Prevent tile entity and entity crashes
String msg = "Entity threw exception at " + entity.world.getWorld().getName() + ":" + entity.locX() + "," + entity.locY() + "," + entity.locZ();
System.err.println(msg);
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
index 0bd77c641890802c715a0d8adc83c4aaf20d6ffe..c06e5c2be056020a5954f25ecb4d185fe399e3f3 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
@@ -1781,7 +1781,7 @@ public final class CraftServer implements Server {
@Override
public boolean isPrimaryThread() {
- return Thread.currentThread().equals(console.serverThread); // Paper - Fix issues with detecting main thread properly
+ return Thread.currentThread().equals(console.serverThread) || Thread.currentThread().equals(net.minecraft.server.MinecraftServer.getServer().shutdownThread); // Paper - Fix issues with detecting main thread properly, the only time Watchdog will be used is during a crash shutdown which is a "try our best" scenario
}
@Override
diff --git a/src/main/java/org/bukkit/craftbukkit/Main.java b/src/main/java/org/bukkit/craftbukkit/Main.java
index 438e86595760be233e89c49224963e5e8ce335e3..894552adf119037e97c7de27d783920db580f62b 100644
--- a/src/main/java/org/bukkit/craftbukkit/Main.java
+++ b/src/main/java/org/bukkit/craftbukkit/Main.java
@@ -150,6 +150,37 @@ public class Main {
OptionSet options = null;
+ // Paper start - preload logger classes to avoid plugins mixing versions
+ tryPreloadClass("com.destroystokyo.paper.log.LogFullPolicy");
+ tryPreloadClass("org.apache.logging.log4j.core.Core");
+ tryPreloadClass("org.apache.logging.log4j.core.Appender");
+ tryPreloadClass("org.apache.logging.log4j.core.ContextDataInjector");
+ tryPreloadClass("org.apache.logging.log4j.core.Filter");
+ tryPreloadClass("org.apache.logging.log4j.core.ErrorHandler");
+ tryPreloadClass("org.apache.logging.log4j.core.LogEvent");
+ tryPreloadClass("org.apache.logging.log4j.core.Logger");
+ tryPreloadClass("org.apache.logging.log4j.core.LoggerContext");
+ tryPreloadClass("org.apache.logging.log4j.core.LogEventListener");
+ tryPreloadClass("org.apache.logging.log4j.core.AbstractLogEvent");
+ tryPreloadClass("org.apache.logging.log4j.message.AsynchronouslyFormattable");
+ tryPreloadClass("org.apache.logging.log4j.message.FormattedMessage");
+ tryPreloadClass("org.apache.logging.log4j.message.ParameterizedMessage");
+ tryPreloadClass("org.apache.logging.log4j.message.Message");
+ tryPreloadClass("org.apache.logging.log4j.message.MessageFactory");
+ tryPreloadClass("org.apache.logging.log4j.message.TimestampMessage");
+ tryPreloadClass("org.apache.logging.log4j.message.SimpleMessage");
+ tryPreloadClass("org.apache.logging.log4j.core.async.AsyncLogger");
+ tryPreloadClass("org.apache.logging.log4j.core.async.AsyncLoggerContext");
+ tryPreloadClass("org.apache.logging.log4j.core.async.AsyncQueueFullPolicy");
+ tryPreloadClass("org.apache.logging.log4j.core.async.AsyncLoggerDisruptor");
+ tryPreloadClass("org.apache.logging.log4j.core.async.RingBufferLogEvent");
+ tryPreloadClass("org.apache.logging.log4j.core.async.DisruptorUtil");
+ tryPreloadClass("org.apache.logging.log4j.core.async.RingBufferLogEventHandler");
+ tryPreloadClass("org.apache.logging.log4j.core.impl.ThrowableProxy");
+ tryPreloadClass("org.apache.logging.log4j.core.impl.ThrowableProxy$CacheEntry");
+ tryPreloadClass("org.apache.logging.log4j.core.impl.ExtendedClassInfo");
+ tryPreloadClass("org.apache.logging.log4j.core.impl.ExtendedStackTraceElement");
+ // Paper end
try {
options = parser.parse(args);
} catch (joptsimple.OptionException ex) {
@@ -245,8 +276,63 @@ public class Main {
} catch (Throwable t) {
t.printStackTrace();
}
+ // Paper start
+ // load some required classes to avoid errors during shutdown if jar is replaced
+ // also to guarantee our version loads over plugins
+ tryPreloadClass("com.destroystokyo.paper.util.SneakyThrow");
+ tryPreloadClass("com.google.common.collect.Iterators$PeekingImpl");
+ tryPreloadClass("com.google.common.collect.MapMakerInternalMap$Values");
+ tryPreloadClass("com.google.common.collect.MapMakerInternalMap$ValueIterator");
+ tryPreloadClass("com.google.common.collect.MapMakerInternalMap$WriteThroughEntry");
+ tryPreloadClass("com.google.common.collect.Iterables");
+ for (int i = 1; i <= 15; i++) {
+ tryPreloadClass("com.google.common.collect.Iterables$" + i, false);
+ }
+ tryPreloadClass("org.apache.commons.lang3.mutable.MutableBoolean");
+ tryPreloadClass("org.apache.commons.lang3.mutable.MutableInt");
+ tryPreloadClass("org.jline.terminal.impl.MouseSupport");
+ tryPreloadClass("org.jline.terminal.impl.MouseSupport$1");
+ tryPreloadClass("org.jline.terminal.Terminal$MouseTracking");
+ tryPreloadClass("co.aikar.timings.TimingHistory");
+ tryPreloadClass("co.aikar.timings.TimingHistory$MinuteReport");
+ tryPreloadClass("io.netty.channel.AbstractChannelHandlerContext");
+ tryPreloadClass("io.netty.channel.AbstractChannelHandlerContext$11");
+ tryPreloadClass("io.netty.channel.AbstractChannel$AbstractUnsafe$8");
+ tryPreloadClass("io.netty.util.concurrent.DefaultPromise");
+ tryPreloadClass("io.netty.util.concurrent.DefaultPromise$1");
+ tryPreloadClass("io.netty.util.internal.PromiseNotificationUtil");
+ tryPreloadClass("io.netty.util.internal.SystemPropertyUtil");
+ tryPreloadClass("org.bukkit.craftbukkit.scheduler.CraftScheduler");
+ tryPreloadClass("org.bukkit.craftbukkit.scheduler.CraftScheduler$1");
+ tryPreloadClass("org.bukkit.craftbukkit.scheduler.CraftScheduler$2");
+ tryPreloadClass("org.bukkit.craftbukkit.scheduler.CraftScheduler$3");
+ tryPreloadClass("org.bukkit.craftbukkit.scheduler.CraftScheduler$4");
+ tryPreloadClass("org.slf4j.helpers.MessageFormatter");
+ tryPreloadClass("org.slf4j.helpers.FormattingTuple");
+ tryPreloadClass("org.slf4j.helpers.BasicMarker");
+ tryPreloadClass("org.slf4j.helpers.Util");
+ tryPreloadClass("com.destroystokyo.paper.event.player.PlayerConnectionCloseEvent");
+ tryPreloadClass("com.destroystokyo.paper.event.entity.EntityRemoveFromWorldEvent");
+ // Minecraft, seen during saving
+ tryPreloadClass("net.minecraft.server.LightEngineLayerEventListener$Void");
+ tryPreloadClass("net.minecraft.server.LightEngineLayerEventListener");
+ tryPreloadClass("net.minecraft.server.ExceptionSuppressor");
+ // Paper end
+ }
+ }
+
+ // Paper start
+ private static void tryPreloadClass(String className) {
+ tryPreloadClass(className, true);
+ }
+ private static void tryPreloadClass(String className, boolean printError) {
+ try {
+ Class.forName(className);
+ } catch (ClassNotFoundException e) {
+ if (printError) System.err.println("An expected class " + className + " was not found for preloading: " + e.getMessage());
}
}
+ // Paper end
private static List<String> asList(String... params) {
return Arrays.asList(params);
diff --git a/src/main/java/org/bukkit/craftbukkit/util/ServerShutdownThread.java b/src/main/java/org/bukkit/craftbukkit/util/ServerShutdownThread.java
index 449e99d1b673870ed6892f6ab2c715a2db35c35d..c7ed6e0f8a989cec97700df2b15198c9c481c549 100644
--- a/src/main/java/org/bukkit/craftbukkit/util/ServerShutdownThread.java
+++ b/src/main/java/org/bukkit/craftbukkit/util/ServerShutdownThread.java
@@ -12,12 +12,27 @@ public class ServerShutdownThread extends Thread {
@Override
public void run() {
try {
+ // Paper start - try to shutdown on main
+ server.safeShutdown(false, false);
+ for (int i = 1000; i > 0 && !server.hasStopped(); i -= 100) {
+ Thread.sleep(100);
+ }
+ if (server.hasStopped()) {
+ while (!server.hasFullyShutdown) Thread.sleep(1000);
+ return;
+ }
+ // Looks stalled, close async
org.spigotmc.AsyncCatcher.enabled = false; // Spigot
org.spigotmc.AsyncCatcher.shuttingDown = true; // Paper
+ server.forceTicks = true;
server.close();
+ while (!server.hasFullyShutdown) Thread.sleep(1000);
+ } catch (InterruptedException e) {
+ e.printStackTrace();
+ // Paper end
} finally {
try {
- net.minecrell.terminalconsole.TerminalConsoleAppender.close(); // Paper - Use TerminalConsoleAppender
+ //net.minecrell.terminalconsole.TerminalConsoleAppender.close(); // Paper - Move into stop
} catch (Exception e) {
}
}
diff --git a/src/main/java/org/spigotmc/RestartCommand.java b/src/main/java/org/spigotmc/RestartCommand.java
index aefea3a9a8b9b75c62bd20018be7cd166a213001..123de5ac9026508e21cdc225f0962f5c3c46fed5 100644
--- a/src/main/java/org/spigotmc/RestartCommand.java
+++ b/src/main/java/org/spigotmc/RestartCommand.java
@@ -139,7 +139,7 @@ public class RestartCommand extends Command
// Paper end
// Paper start - copied from above and modified to return if the hook registered
- private static boolean addShutdownHook(String restartScript)
+ public static boolean addShutdownHook(String restartScript)
{
String[] split = restartScript.split( " " );
if ( split.length > 0 && new File( split[0] ).isFile() )
diff --git a/src/main/java/org/spigotmc/WatchdogThread.java b/src/main/java/org/spigotmc/WatchdogThread.java
index 5bdcdcf9e85b73086722783bff26321d03382bb9..513c1041c34ebb3ac1775674a3f4526693759c08 100644
--- a/src/main/java/org/spigotmc/WatchdogThread.java
+++ b/src/main/java/org/spigotmc/WatchdogThread.java
@@ -13,6 +13,7 @@ import org.bukkit.Bukkit;
public class WatchdogThread extends Thread
{
+ public static final boolean DISABLE_WATCHDOG = Boolean.getBoolean("disable.watchdog"); // Paper
private static WatchdogThread instance;
private final long timeoutTime;
private final long earlyWarningEvery; // Paper - Timeout time for just printing a dump but not restarting
@@ -41,6 +42,7 @@ public class WatchdogThread extends Thread
{
if ( instance == null )
{
+ if (timeoutTime <= 0) timeoutTime = 300; // Paper
instance = new WatchdogThread( timeoutTime * 1000L, restart );
instance.start();
}
@@ -67,12 +69,13 @@ public class WatchdogThread extends Thread
// Paper start
Logger log = Bukkit.getServer().getLogger();
long currentTime = monotonicMillis();
- if ( lastTick != 0 && currentTime > lastTick + earlyWarningEvery && !Boolean.getBoolean("disable.watchdog") )
+ MinecraftServer server = MinecraftServer.getServer();
+ if (lastTick != 0 && hasStarted && (!server.isRunning() || (currentTime > lastTick + earlyWarningEvery && !DISABLE_WATCHDOG) ))
{
- boolean isLongTimeout = currentTime > lastTick + timeoutTime;
+ boolean isLongTimeout = currentTime > lastTick + timeoutTime || (!server.isRunning() && !server.hasStopped() && currentTime > lastTick + 1000);
// 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...
+ if ( !isLongTimeout && server.hasStopped()) continue; // Don't spam early watchdog warnings during shutdown, we'll come back to this...
lastEarlyWarning = currentTime;
if (isLongTimeout) {
// Paper end
@@ -114,7 +117,7 @@ public class WatchdogThread extends Thread
log.log( Level.SEVERE, "------------------------------" );
log.log( Level.SEVERE, "Server thread dump (Look for plugins here before reporting to Paper!):" ); // Paper
ChunkTaskManager.dumpAllChunkLoadInfo(); // Paper
- dumpThread( ManagementFactory.getThreadMXBean().getThreadInfo( MinecraftServer.getServer().serverThread.getId(), Integer.MAX_VALUE ), log );
+ dumpThread( ManagementFactory.getThreadMXBean().getThreadInfo( server.serverThread.getId(), Integer.MAX_VALUE ), log );
log.log( Level.SEVERE, "------------------------------" );
//
// Paper start - Only print full dump on long timeouts
@@ -135,9 +138,24 @@ public class WatchdogThread extends Thread
if ( isLongTimeout )
{
- if ( restart && !MinecraftServer.getServer().hasStopped() )
+ if ( !server.hasStopped() )
{
- RestartCommand.restart();
+ AsyncCatcher.enabled = false; // Disable async catcher incase it interferes with us
+ AsyncCatcher.shuttingDown = true;
+ server.forceTicks = true;
+ if (restart) {
+ RestartCommand.addShutdownHook( SpigotConfig.restartScript );
+ }
+ // try one last chance to safe shutdown on main incase it 'comes back'
+ server.safeShutdown(false, restart);
+ try {
+ Thread.sleep(1000);
+ } catch (InterruptedException e) {
+ e.printStackTrace();
+ }
+ if (!server.hasStopped()) {
+ server.close();
+ }
}
break;
} // Paper end
diff --git a/src/main/resources/log4j2.xml b/src/main/resources/log4j2.xml
index 476f4a5cbe664ddd05474cb88553018bd334a5b8..8af159abd3d0cc94cf155fec5b384c42f69551bf 100644
--- a/src/main/resources/log4j2.xml
+++ b/src/main/resources/log4j2.xml
@@ -1,5 +1,5 @@
<?xml version="1.0" encoding="UTF-8"?>
-<Configuration status="WARN" packages="com.mojang.util">
+<Configuration status="WARN" packages="com.mojang.util" shutdownHook="disable">
<Appenders>
<Queue name="ServerGuiConsole">
<PatternLayout pattern="[%d{HH:mm:ss} %level]: %msg%n" />
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