diff options
Diffstat (limited to 'patches/server/0388-Improved-Watchdog-Support.patch')
| -rw-r--r-- | patches/server/0388-Improved-Watchdog-Support.patch | 583 |
1 files changed, 583 insertions, 0 deletions
diff --git a/patches/server/0388-Improved-Watchdog-Support.patch b/patches/server/0388-Improved-Watchdog-Support.patch new file mode 100644 index 0000000000..2da28bf8c2 --- /dev/null +++ b/patches/server/0388-Improved-Watchdog-Support.patch @@ -0,0 +1,583 @@ +From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 +From: Aikar <[email protected]> +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 e3b74dbdf8e14219a56fab939f3174e0c2f66de6..218f5bafeed8551b55b91c7fccaf6935c8b631ca 100644 +--- a/src/main/java/com/destroystokyo/paper/Metrics.java ++++ b/src/main/java/com/destroystokyo/paper/Metrics.java +@@ -92,7 +92,12 @@ public class Metrics { + * Starts the Scheduler which submits our data every 30 minutes. + */ + private void startSubmitting() { +- final Runnable submitTask = this::submitData; ++ final Runnable submitTask = () -> { ++ if (MinecraftServer.getServer().hasStopped()) { ++ return; ++ } ++ submitData(); ++ }; + + // Many servers tend to restart at a fixed time at xx:00 which causes an uneven distribution of requests on the + // bStats backend. To circumvent this problem, we introduce some randomness into the initial and second delay. +diff --git a/src/main/java/net/minecraft/CrashReport.java b/src/main/java/net/minecraft/CrashReport.java +index 8cc4cb2163a93b9491550fe6d0f5d980fb216920..4dd14d73a37b32288a64fbd67ee22c435b6e6d57 100644 +--- a/src/main/java/net/minecraft/CrashReport.java ++++ b/src/main/java/net/minecraft/CrashReport.java +@@ -228,6 +228,7 @@ public class CrashReport { + } + + public static CrashReport forThrowable(Throwable cause, String title) { ++ if (cause instanceof ThreadDeath) com.destroystokyo.paper.util.SneakyThrow.sneaky(cause); // Paper + while (cause instanceof CompletionException && cause.getCause() != null) { + cause = cause.getCause(); + } +diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java +index 1ab4e3a1d2e3a576ea5f05c2d92a1aae47b1f73e..2b301ab18cc67c04f6091f3a001aff20faadb9c9 100644 +--- a/src/main/java/net/minecraft/server/MinecraftServer.java ++++ b/src/main/java/net/minecraft/server/MinecraftServer.java +@@ -298,7 +298,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa + public java.util.Queue<Runnable> processQueue = new java.util.concurrent.ConcurrentLinkedQueue<Runnable>(); + public int autosavePeriod; + public Commands vanillaCommandDispatcher; +- private boolean forceTicks; ++ public boolean forceTicks; // Paper + // CraftBukkit end + // Spigot start + public static final int TPS = 20; +@@ -309,6 +309,9 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa + // Spigot end + public static long currentTickLong = 0L; // Paper + ++ public volatile Thread shutdownThread; // Paper ++ public volatile boolean abnormalExit = false; // Paper ++ + public static <S extends MinecraftServer> S spin(Function<Thread, S> serverFactory) { + AtomicReference<S> atomicreference = new AtomicReference(); + Thread thread = new Thread(() -> { +@@ -913,6 +916,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa + + // CraftBukkit start + private boolean hasStopped = false; ++ public volatile boolean hasFullyShutdown = false; // Paper + private final Object stopLock = new Object(); + public final boolean hasStopped() { + synchronized (this.stopLock) { +@@ -927,6 +931,19 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa + if (this.hasStopped) return; + this.hasStopped = true; + } ++ // Paper start - kill main thread, and kill it hard ++ shutdownThread = Thread.currentThread(); ++ org.spigotmc.WatchdogThread.doStop(); // Paper ++ if (!isSameThread()) { ++ MinecraftServer.LOGGER.info("Stopping main thread (Ignore any thread death message you see! - DO NOT REPORT THREAD DEATH TO PAPER)"); ++ while (this.getRunningThread().isAlive()) { ++ this.getRunningThread().stop(); ++ try { ++ Thread.sleep(1); ++ } catch (InterruptedException e) {} ++ } ++ } ++ // Paper end + // CraftBukkit end + MinecraftServer.LOGGER.info("Stopping server"); + MinecraftTimings.stopServer(); // Paper +@@ -1007,7 +1024,18 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa + this.getProfileCache().save(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"); ++ Util.shutdownExecutors(); // Paper ++ LOGGER.info("Closing Server"); ++ try { ++ net.minecrell.terminalconsole.TerminalConsoleAppender.close(); // Paper - Use TerminalConsoleAppender ++ } catch (Exception e) { ++ } ++ this.onServerExit(); ++ // Paper end + } + + public String getLocalIp() { +@@ -1100,6 +1128,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa + + protected void runServer() { + try { ++ long serverStartTime = Util.getNanos(); // Paper + if (this.initServer()) { + this.nextTickTime = Util.getMillis(); + this.status.setDescription(new TextComponent(this.motd)); +@@ -1107,6 +1136,18 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa + this.updateStatusIcon(this.status); + + // Spigot start ++ // Paper start - move done tracking ++ LOGGER.info("Running delayed init tasks"); ++ this.server.getScheduler().mainThreadHeartbeat(this.tickCount); // 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) (Util.getNanos() - 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 +@@ -1164,6 +1205,12 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa + this.onServerCrash((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 ) +@@ -1197,14 +1244,14 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa + this.profileCache.clearExecutor(); + } + +- 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.onServerExit(); ++ //this.onServerExit(); // Paper - moved into stop + } + + } +@@ -1268,6 +1315,12 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa + + @Override + public TickTask wrapRunnable(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.tickCount, runnable); + } + +@@ -1496,6 +1549,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa + try { + crashreport = CrashReport.forThrowable(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 +@@ -1953,7 +2007,8 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa + this.packRepository.setSelected(dataPacks); + this.worldData.setDataPackConfig(MinecraftServer.getSelectedPacks(this.packRepository)); + this.resources.managers.updateRegistryTags(this.registryAccess()); +- this.getPlayerList().saveAll(); ++ if (Thread.currentThread() != this.serverThread) return; // Paper ++ //this.getPlayerList().saveAll(); // Paper - we don't need to do this + this.getPlayerList().reloadResources(); + this.functionManager.replaceLibrary(this.resources.managers.getFunctionLibrary()); + this.structureManager.onResourceManagerReload(this.resources.resourceManager); +diff --git a/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java b/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java +index ab26a26ac553071ecd943dc8a3b41debf8b797ef..d0d058287fc1e87e944e99d4fc2cbd38eafb82b3 100644 +--- a/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java ++++ b/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java +@@ -284,7 +284,7 @@ public class DedicatedServer extends MinecraftServer implements ServerInterface + long j = Util.getNanos() - 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.BooleanValue) this.getGameRules().getRule(GameRules.RULE_ANNOUNCE_ADVANCEMENTS)).set(dedicatedserverproperties.announcePlayerAchievements, this); + } +@@ -441,7 +441,8 @@ public class DedicatedServer extends MinecraftServer implements ServerInterface + //this.remoteStatusListener.b(); // Paper - don't wait for remote connections + } + +- System.exit(0); // CraftBukkit ++ hasFullyShutdown = true; // Paper ++ System.exit(this.abnormalExit ? 70 : 0); // CraftBukkit // Paper + } + + @Override +@@ -767,7 +768,7 @@ public class DedicatedServer extends MinecraftServer implements ServerInterface + @Override + public void stopServer() { + super.stopServer(); +- Util.shutdownExecutors(); ++ //Util.shutdownExecutors(); // Paper - moved into super + SkullBlockEntity.clear(); + } + +diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java +index 04596feb8667e3abbfa1c7343b46cacaf88ecce8..7e3f7b69fc7a608dd82b471d832cc401a77f0738 100644 +--- a/src/main/java/net/minecraft/server/level/ChunkMap.java ++++ b/src/main/java/net/minecraft/server/level/ChunkMap.java +@@ -571,6 +571,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider + MutableBoolean mutableboolean = new MutableBoolean(); + + do { ++ boolean isShuttingDown = level.getServer().hasStopped(); // Paper + mutableboolean.setFalse(); + list.stream().map((playerchunk) -> { + CompletableFuture completablefuture; +diff --git a/src/main/java/net/minecraft/server/players/PlayerList.java b/src/main/java/net/minecraft/server/players/PlayerList.java +index e2991476289f04fce5aac307a95b4c6df9ede85f..903a816ec6f4d1a9c82b7e32bd2b4fc9b78f3a5c 100644 +--- a/src/main/java/net/minecraft/server/players/PlayerList.java ++++ b/src/main/java/net/minecraft/server/players/PlayerList.java +@@ -512,7 +512,7 @@ public abstract class PlayerList { + this.cserver.getPluginManager().callEvent(playerQuitEvent); + entityplayer.getBukkitEntity().disconnect(playerQuitEvent.getQuitMessage()); + +- entityplayer.doTick(); // SPIGOT-924 ++ if (server.isSameThread()) entityplayer.doTick(); // 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/util/thread/BlockableEventLoop.java b/src/main/java/net/minecraft/util/thread/BlockableEventLoop.java +index 6fefa619299d3202158490630d62c16aef71e831..7a4ade1a4190bf4fbb048919ae2be230f7b80fff 100644 +--- a/src/main/java/net/minecraft/util/thread/BlockableEventLoop.java ++++ b/src/main/java/net/minecraft/util/thread/BlockableEventLoop.java +@@ -152,6 +152,7 @@ public abstract class BlockableEventLoop<R extends Runnable> implements Profiler + try { + task.run(); + } catch (Exception var3) { ++ if (var3.getCause() instanceof ThreadDeath) throw var3; // Paper + LOGGER.error(LogUtils.FATAL_MARKER, "Error executing task on {}", this.name(), var3); + } + +diff --git a/src/main/java/net/minecraft/world/level/Level.java b/src/main/java/net/minecraft/world/level/Level.java +index 334fd625829c8e5e9c434b184f6d0084b2d6ccc8..e4c2bd0131a54495fbd1930ad046225118e33186 100644 +--- a/src/main/java/net/minecraft/world/level/Level.java ++++ b/src/main/java/net/minecraft/world/level/Level.java +@@ -832,6 +832,7 @@ public abstract class Level implements LevelAccessor, AutoCloseable { + try { + tickConsumer.accept(entity); + } catch (Throwable throwable) { ++ if (throwable instanceof ThreadDeath) throw throwable; // Paper + // Paper start - Prevent tile entity and entity crashes + final String msg = String.format("Entity threw exception at %s:%s,%s,%s", entity.level.getWorld().getName(), entity.getX(), entity.getY(), entity.getZ()); + MinecraftServer.LOGGER.error(msg, throwable); +diff --git a/src/main/java/net/minecraft/world/level/chunk/LevelChunk.java b/src/main/java/net/minecraft/world/level/chunk/LevelChunk.java +index 6129ea877c95445d358baf5036be8c4eee1f2770..9d667be3fe04b7d86986bd1ecaf4fce8b63198ae 100644 +--- a/src/main/java/net/minecraft/world/level/chunk/LevelChunk.java ++++ b/src/main/java/net/minecraft/world/level/chunk/LevelChunk.java +@@ -1057,6 +1057,7 @@ public class LevelChunk extends ChunkAccess { + + gameprofilerfiller.pop(); + } catch (Throwable throwable) { ++ if (throwable instanceof ThreadDeath) throw throwable; // Paper + // Paper start - Prevent tile entity and entity crashes + final String msg = String.format("BlockEntity threw exception at %s:%s,%s,%s", LevelChunk.this.getLevel().getWorld().getName(), this.getPos().getX(), this.getPos().getY(), this.getPos().getZ()); + net.minecraft.server.MinecraftServer.LOGGER.error(msg, throwable); +diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java +index 6535d59e4fd04cce072de4d939b84e423b5ce52d..e8bb0ee58df4d175d39469555fb62accfe4c6cf9 100644 +--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java ++++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java +@@ -2061,7 +2061,7 @@ 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 + } + + // Paper start +diff --git a/src/main/java/org/bukkit/craftbukkit/Main.java b/src/main/java/org/bukkit/craftbukkit/Main.java +index b07323de3587464b54c25fd9e079b3b50ed323da..c579f586c9a2dcb6356b49f68591f61e0fa61b62 100644 +--- a/src/main/java/org/bukkit/craftbukkit/Main.java ++++ b/src/main/java/org/bukkit/craftbukkit/Main.java +@@ -12,6 +12,8 @@ import java.util.logging.Level; + import java.util.logging.Logger; + import joptsimple.OptionParser; + import joptsimple.OptionSet; ++import net.minecraft.util.ExceptionCollector; ++import net.minecraft.world.level.lighting.LayerLightEventListener; + import net.minecrell.terminalconsole.TerminalConsoleAppender; // Paper + + public class Main { +@@ -162,6 +164,36 @@ public class Main { + + OptionSet options = null; + ++ // Paper start - preload logger classes to avoid plugins mixing versions ++ tryPreloadClass("org.apache.logging.log4j.core.Core"); ++ tryPreloadClass("org.apache.logging.log4j.core.appender.AsyncAppender"); ++ 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.ExtendedClassInfo"); ++ tryPreloadClass("org.apache.logging.log4j.core.impl.ExtendedStackTraceElement"); ++ // Paper end + try { + options = parser.parse(args); + } catch (joptsimple.OptionException ex) { +@@ -261,8 +293,64 @@ 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.AbstractChannelHandlerContext$12"); ++ tryPreloadClass("io.netty.channel.AbstractChannel$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(LayerLightEventListener.DummyLightLayerEventListener.class.getName()); ++ tryPreloadClass(LayerLightEventListener.class.getName()); ++ tryPreloadClass(ExceptionCollector.class.getName()); ++ // 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 b4a19d80bbf71591f25729fd0e98590350cb31d0..d752720f2f234b9dbd2117333fee1bfad663ec02 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; + this.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 a142a56a920e153ed84c08cece993f10d76f7793..92d97a5810a379b427a99b4c63fb9844d823a84f 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 1ffb208094f521883ef0e23baf5fb29380b14273..4d271cae88c16ed2419f896c728fdff612540500 100644 +--- a/src/main/java/org/spigotmc/WatchdogThread.java ++++ b/src/main/java/org/spigotmc/WatchdogThread.java +@@ -12,6 +12,7 @@ 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 long timeoutTime; + private boolean restart; +@@ -40,6 +41,7 @@ public class WatchdogThread extends Thread + { + if ( WatchdogThread.instance == null ) + { ++ if (timeoutTime <= 0) timeoutTime = 300; // Paper + WatchdogThread.instance = new WatchdogThread( timeoutTime * 1000L, restart ); + WatchdogThread.instance.start(); + } else +@@ -71,12 +73,13 @@ public class WatchdogThread extends Thread + // 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 ++ MinecraftServer server = MinecraftServer.getServer(); ++ if ( this.lastTick != 0 && this.timeoutTime > 0 && WatchdogThread.hasStarted && (!server.isRunning() || (currentTime > this.lastTick + this.earlyWarningEvery && !DISABLE_WATCHDOG) )) // Paper - add property to disable + { +- 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 +@@ -118,7 +121,7 @@ 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 + com.destroystokyo.paper.io.chunk.ChunkTaskManager.dumpAllChunkLoadInfo(); // Paper +- WatchdogThread.dumpThread( ManagementFactory.getThreadMXBean().getThreadInfo( MinecraftServer.getServer().serverThread.getId(), Integer.MAX_VALUE ), log ); ++ WatchdogThread.dumpThread( ManagementFactory.getThreadMXBean().getThreadInfo( server.serverThread.getId(), Integer.MAX_VALUE ), log ); + log.log( Level.SEVERE, "------------------------------" ); + // + // Paper start - Only print full dump on long timeouts +@@ -138,9 +141,25 @@ public class WatchdogThread extends Thread + + if ( isLongTimeout ) + { +- if ( this.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.abnormalExit = true; ++ 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 3dc317e466e1b93dff030794dd7f29ca1b266778..d285dbec16272db6b8a71865e05924ad66087407 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" /> |