Mirror von
https://github.com/PaperMC/Paper.git
synchronisiert 2024-12-15 02:50:09 +01:00
614a664bd3
Mark chunks that are blocking main thread for world generation as urgent Implements a general priority system so that chunks that are sorted in the generator queues can prioritize certain chunks over another. Urgent chunks will jump to the front of the line, ensuring that a sync chunk load on an ungenerated chunk does not lag the server for a long period of time if the servers generator queues are filled with lots of chunks already. This massively reduces the lag spikes from sync chunk gens. Then we further prioritize loading order so nearby chunks have higher priority than distant chunks, reducing the pressure a high no tick view distance holds on you. Chunks in front of the player have higher priority, to help with fast traveling players keep up with their movement. This commit also improves single core cpu scenarios in that we will now automatically disable Async Chunks as well as Minecrafts thread pool. It is never recommended to use async chunks on a single CPU as context switching will be slower than just running it all on main. This also bumps the number of server worker threads by default too. Mojang does not utilize the workers in an effecient manner, resulting in them using barely any sustained CPU. So give it more workers so more chunks can be processed concurrently This change also improves urgent chunk loading, so players flying into unloaded chunks will hurt a little bit less (but still hurt) Ping #3395 #3363 (Not marking as closed, we need to make prevent moving work)
380 Zeilen
21 KiB
Diff
380 Zeilen
21 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Sun, 12 Apr 2020 15:50:48 -0400
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Subject: [PATCH] Improved Watchdog Support
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Forced Watchdog Crash support and Improve Async Shutdown
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If the request to shut down the server is received while we are in
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a watchdog hang, immediately treat it as a crash and begin the shutdown
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process. Shutdown process is now improved to also shutdown cleanly when
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not using restart scripts either.
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If a server is deadlocked, a server owner can send SIGUP (or any other signal
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the JVM understands to shut down as it currently does) and the watchdog
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will no longer need to wait until the full timeout, allowing you to trigger
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a close process and try to shut the server down gracefully, saving player and
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world data.
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Previously there was no way to trigger this outside of waiting for a full watchdog
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timeout, which may be set to a really long time...
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Additionally, fix everything to do with shutting the server down asynchronously.
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Previously, nearly everything about the process was fragile and unsafe. Main might
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not have actually been frozen, and might still be manipulating state.
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Or, some reuest might ask main to do something in the shutdown but main is dead.
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Or worse, other things might start closing down items such as the Console or Thread Pool
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before we are fully shutdown.
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This change tries to resolve all of these issues by moving everything into the stop
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method and guaranteeing only one thread is stopping the server.
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We then issue Thread Death to the main thread of another thread initiates the stop process.
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We have to ensure Thread Death propagates correctly though to stop main completely.
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This is to ensure that if main isn't truely stuck, it's not manipulating state we are trying to save.
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This also moves all plugins who register "delayed init" tasks to occur just before "Done" so they
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are properly accounted for and wont trip watchdog on init.
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diff --git a/src/main/java/net/minecraft/server/CrashReport.java b/src/main/java/net/minecraft/server/CrashReport.java
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index 3de19c998b749ccf74958c2412a8c9506457383e..c7dc8787cc3456c5540d6a00a6ff051533edc25a 100644
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--- a/src/main/java/net/minecraft/server/CrashReport.java
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+++ b/src/main/java/net/minecraft/server/CrashReport.java
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@@ -257,6 +257,7 @@ public class CrashReport {
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}
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public static CrashReport a(Throwable throwable, String s) {
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+ if (throwable instanceof ThreadDeath) com.destroystokyo.paper.util.SneakyThrow.sneaky(throwable); // Paper
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while (throwable instanceof CompletionException && throwable.getCause() != null) {
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throwable = throwable.getCause();
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}
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diff --git a/src/main/java/net/minecraft/server/DedicatedServer.java b/src/main/java/net/minecraft/server/DedicatedServer.java
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index 1ef7890da599d13e784861035e7891efcc4cd504..b07c49f1b48cc6dedd7c2057da0ec4f6f6d446e6 100644
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--- a/src/main/java/net/minecraft/server/DedicatedServer.java
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+++ b/src/main/java/net/minecraft/server/DedicatedServer.java
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@@ -299,7 +299,7 @@ public class DedicatedServer extends MinecraftServer implements IMinecraftServer
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long l = SystemUtils.getMonotonicNanos() - i;
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String s2 = String.format(Locale.ROOT, "%.3fs", (double) l / 1.0E9D);
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- DedicatedServer.LOGGER.info("Done ({})! For help, type \"help\"", s2);
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+ //DedicatedServer.LOGGER.info("Done ({})! For help, type \"help\"", s2); // Paper moved to after init
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if (dedicatedserverproperties.announcePlayerAchievements != null) {
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((GameRules.GameRuleBoolean) this.getGameRules().get(GameRules.ANNOUNCE_ADVANCEMENTS)).a(dedicatedserverproperties.announcePlayerAchievements, (MinecraftServer) this);
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}
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@@ -750,7 +750,7 @@ public class DedicatedServer extends MinecraftServer implements IMinecraftServer
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@Override
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public void stop() {
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super.stop();
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- SystemUtils.f();
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+ //SystemUtils.f(); // Paper - moved into super
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}
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@Override
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diff --git a/src/main/java/net/minecraft/server/IAsyncTaskHandler.java b/src/main/java/net/minecraft/server/IAsyncTaskHandler.java
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index cfe43e882e524b6ab3d9702e81269c97e6b75eba..2632c7c3ec77918be7979f2aa49209e566cafc77 100644
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--- a/src/main/java/net/minecraft/server/IAsyncTaskHandler.java
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+++ b/src/main/java/net/minecraft/server/IAsyncTaskHandler.java
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@@ -135,6 +135,7 @@ public abstract class IAsyncTaskHandler<R extends Runnable> implements Mailbox<R
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try {
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r0.run();
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} catch (Exception exception) {
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+ if (exception.getCause() instanceof ThreadDeath) throw exception; // Paper
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IAsyncTaskHandler.LOGGER.fatal("Error executing task on {}", this.bi(), exception);
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}
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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 b701db638370c0d07d5be0f61c6cbf19168cde8e..4ea3468614df36e1c148a44bb15d2201da281df3 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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@@ -144,6 +144,7 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
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private final ResourcePackRepository<ResourcePackLoader> resourcePackRepository;
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@Nullable
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private ResourcePackSourceFolder resourcePackFolder;
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+ public volatile Thread shutdownThread; // Paper
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public CommandDispatcher commandDispatcher;
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private final CraftingManager craftingManager;
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private final TagRegistry tagRegistry;
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@@ -176,7 +177,7 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
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public boolean serverAutoSave = false; // Paper
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public File bukkitDataPackFolder;
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public CommandDispatcher vanillaCommandDispatcher;
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- private boolean forceTicks;
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+ public boolean forceTicks; // Paper
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// CraftBukkit end
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// Spigot start
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public static final int TPS = 20;
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@@ -725,7 +726,12 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
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// CraftBukkit start - prevent double stopping on multiple threads
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synchronized(stopLock) {
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if (hasStopped) return;
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+ shutdownThread = Thread.currentThread();
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hasStopped = true;
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+ org.spigotmc.WatchdogThread.doStop(); // Paper
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+ if (!isMainThread()) {
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+ this.getThread().stop();
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+ }
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}
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// CraftBukkit end
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MinecraftServer.LOGGER.info("Stopping server");
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@@ -785,7 +791,18 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
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this.getUserCache().c(false); // Paper
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}
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// Spigot end
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+ // Paper start - move final shutdown items here
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+ LOGGER.info("Flushing Chunk IO");
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com.destroystokyo.paper.io.PaperFileIOThread.Holder.INSTANCE.close(true, true); // Paper
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+ LOGGER.info("Closing Thread Pool");
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+ SystemUtils.shutdownServerThreadPool(); // Paper
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+ LOGGER.info("Closing Server");
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+ try {
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+ net.minecrell.terminalconsole.TerminalConsoleAppender.close(); // Paper - Use TerminalConsoleAppender
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+ } catch (Exception e) {
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+ }
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+ this.exit();
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+ // Paper end
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}
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public String getServerIp() {
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@@ -878,6 +895,7 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
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public void run() {
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try {
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+ long serverStartTime = SystemUtils.getMonotonicNanos(); // Paper
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if (this.init()) {
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this.nextTick = SystemUtils.getMonotonicMillis();
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this.serverPing.setMOTD(new ChatComponentText(this.motd));
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@@ -885,6 +903,18 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
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this.a(this.serverPing);
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// Spigot start
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+ // Paper start - move done tracking
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+ LOGGER.info("Running delayed init tasks");
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+ this.server.getScheduler().mainThreadHeartbeat(this.ticks); // run all 1 tick delay tasks during init,
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+ // this is going to be the first thing the tick process does anyways, so move done and run it after
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+ // everything is init before watchdog tick.
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+ // anything at 3+ won't be caught here but also will trip watchdog....
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+ // tasks are default scheduled at -1 + delay, and first tick will tick at 1
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+ String doneTime = String.format(java.util.Locale.ROOT, "%.3fs", (double) (SystemUtils.getMonotonicNanos() - serverStartTime) / 1.0E9D);
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+ LOGGER.info("Done ({})! For help, type \"help\"", doneTime);
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+ // Paper end
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+
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+ org.spigotmc.WatchdogThread.tick(); // Paper
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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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@@ -941,6 +971,12 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
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this.a((CrashReport) null);
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}
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} catch (Throwable throwable) {
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+ // Paper start
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+ if (throwable instanceof ThreadDeath) {
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+ MinecraftServer.LOGGER.error("Main thread terminated by WatchDog due to hard crash", throwable);
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+ return;
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+ }
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+ // Paper end
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MinecraftServer.LOGGER.error("Encountered an unexpected exception", throwable);
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// Spigot Start
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if ( throwable.getCause() != null )
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@@ -972,14 +1008,14 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
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} catch (Throwable throwable1) {
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MinecraftServer.LOGGER.error("Exception stopping the server", throwable1);
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} finally {
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- org.spigotmc.WatchdogThread.doStop(); // Spigot
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+ //org.spigotmc.WatchdogThread.doStop(); // Spigot // Paper - move into stop
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// CraftBukkit start - Restore terminal to original settings
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try {
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- net.minecrell.terminalconsole.TerminalConsoleAppender.close(); // Paper - Use TerminalConsoleAppender
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+ //net.minecrell.terminalconsole.TerminalConsoleAppender.close(); // Paper - Move into stop
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} catch (Exception ignored) {
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}
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// CraftBukkit end
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- this.exit();
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+ //this.exit(); // Paper - moved into stop
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}
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}
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@@ -1035,6 +1071,12 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
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@Override
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protected TickTask postToMainThread(Runnable runnable) {
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+ // Paper start - anything that does try to post to main during watchdog crash, run on watchdog
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+ if (this.hasStopped && Thread.currentThread().equals(shutdownThread)) {
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+ runnable.run();
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+ runnable = () -> {};
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+ }
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+ // Paper end
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return new TickTask(this.ticks, runnable);
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}
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diff --git a/src/main/java/net/minecraft/server/PlayerList.java b/src/main/java/net/minecraft/server/PlayerList.java
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index ab2831830ad3a4cec0671d189e0534c843b47f5e..78040e83899f1ef1a6d5c456beb9d13959307c18 100644
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--- a/src/main/java/net/minecraft/server/PlayerList.java
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+++ b/src/main/java/net/minecraft/server/PlayerList.java
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@@ -400,7 +400,7 @@ public abstract class PlayerList {
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cserver.getPluginManager().callEvent(playerQuitEvent);
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entityplayer.getBukkitEntity().disconnect(playerQuitEvent.getQuitMessage());
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- entityplayer.playerTick();// SPIGOT-924
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+ if (server.isMainThread()) entityplayer.playerTick();// SPIGOT-924 // Paper - don't tick during emergency shutdowns (Watchdog)
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// CraftBukkit end
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// Paper start - Remove from collideRule team if needed
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diff --git a/src/main/java/net/minecraft/server/SystemUtils.java b/src/main/java/net/minecraft/server/SystemUtils.java
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index 47dbcb70a6b41438a5bf3196495cfdaf02bd2b74..0d12c3657304ccf7ab25a2614c380ee73fdad1fb 100644
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--- a/src/main/java/net/minecraft/server/SystemUtils.java
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+++ b/src/main/java/net/minecraft/server/SystemUtils.java
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@@ -110,6 +110,7 @@ public class SystemUtils {
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return SystemUtils.c;
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}
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+ public static void shutdownServerThreadPool() { f(); } // Paper - OBFHELPER
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public static void f() {
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SystemUtils.c.shutdown();
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diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
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index de9f49b884838105c537b73d69234eb26fddb708..c8619af2cf43041e3eebec74e24c7f127a662efe 100644
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--- a/src/main/java/net/minecraft/server/World.java
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+++ b/src/main/java/net/minecraft/server/World.java
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@@ -792,6 +792,7 @@ public abstract class World implements GeneratorAccess, AutoCloseable {
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gameprofilerfiller.exit();
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} catch (Throwable throwable) {
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+ if (throwable instanceof ThreadDeath) throw throwable; // Paper
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// Paper start - Prevent tile entity and entity crashes
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String msg = "TileEntity threw exception at " + tileentity.world.getWorld().getName() + ":" + tileentity.position.getX() + "," + tileentity.position.getY() + "," + tileentity.position.getZ();
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System.err.println(msg);
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@@ -867,6 +868,7 @@ public abstract class World implements GeneratorAccess, AutoCloseable {
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try {
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consumer.accept(entity);
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} catch (Throwable throwable) {
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+ if (throwable instanceof ThreadDeath) throw throwable; // Paper
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// Paper start - Prevent tile entity and entity crashes
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String msg = "Entity threw exception at " + entity.world.getWorld().getName() + ":" + entity.locX() + "," + entity.locY() + "," + entity.locZ();
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System.err.println(msg);
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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 b627180729a24a83ca383f83aee53133ea1b398e..f49193d9d7cd9655fdedf64bebdcf4e1a9b77f2c 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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@@ -1706,7 +1706,7 @@ public final class CraftServer implements Server {
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@Override
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public boolean isPrimaryThread() {
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- return Thread.currentThread().equals(console.serverThread); // Paper - Fix issues with detecting main thread properly
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+ 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
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}
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@Override
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diff --git a/src/main/java/org/bukkit/craftbukkit/util/ServerShutdownThread.java b/src/main/java/org/bukkit/craftbukkit/util/ServerShutdownThread.java
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index 449e99d1b673870ed6892f6ab2c715a2db35c35d..899a525209cfe047ce57e758c6328a130f916dc6 100644
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--- a/src/main/java/org/bukkit/craftbukkit/util/ServerShutdownThread.java
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+++ b/src/main/java/org/bukkit/craftbukkit/util/ServerShutdownThread.java
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@@ -12,12 +12,25 @@ public class ServerShutdownThread extends Thread {
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@Override
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public void run() {
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try {
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+ // Paper start - try to shutdown on main
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+ server.safeShutdown(false, false);
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+ for (int i = 1000; i > 0 && !server.hasStopped(); i -= 100) {
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+ Thread.sleep(100);
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+ }
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+ if (server.hasStopped()) {
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+ return;
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+ }
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+ // Looks stalled, close async
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org.spigotmc.AsyncCatcher.enabled = false; // Spigot
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org.spigotmc.AsyncCatcher.shuttingDown = true; // Paper
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+ server.forceTicks = true;
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server.close();
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+ } catch (InterruptedException e) {
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+ e.printStackTrace();
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+ // Paper end
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} finally {
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try {
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- net.minecrell.terminalconsole.TerminalConsoleAppender.close(); // Paper - Use TerminalConsoleAppender
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+ //net.minecrell.terminalconsole.TerminalConsoleAppender.close(); // Paper - Move into stop
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} catch (Exception e) {
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}
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}
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diff --git a/src/main/java/org/spigotmc/RestartCommand.java b/src/main/java/org/spigotmc/RestartCommand.java
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index aefea3a9a8b9b75c62bd20018be7cd166a213001..123de5ac9026508e21cdc225f0962f5c3c46fed5 100644
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--- a/src/main/java/org/spigotmc/RestartCommand.java
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+++ b/src/main/java/org/spigotmc/RestartCommand.java
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@@ -139,7 +139,7 @@ public class RestartCommand extends Command
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// Paper end
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// Paper start - copied from above and modified to return if the hook registered
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- private static boolean addShutdownHook(String restartScript)
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+ public static boolean addShutdownHook(String restartScript)
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{
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String[] split = restartScript.split( " " );
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if ( split.length > 0 && new File( split[0] ).isFile() )
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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 5bdcdcf9e85b73086722783bff26321d03382bb9..fe4b8caf28b2d36b2034ac90b1a76dea7b691feb 100644
|
|
--- a/src/main/java/org/spigotmc/WatchdogThread.java
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+++ b/src/main/java/org/spigotmc/WatchdogThread.java
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@@ -41,6 +41,7 @@ public class WatchdogThread extends Thread
|
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{
|
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if ( instance == null )
|
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{
|
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+ if (timeoutTime <= 0) timeoutTime = 300; // Paper
|
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instance = new WatchdogThread( timeoutTime * 1000L, restart );
|
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instance.start();
|
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}
|
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@@ -67,12 +68,13 @@ public class WatchdogThread extends Thread
|
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// Paper start
|
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Logger log = Bukkit.getServer().getLogger();
|
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long currentTime = monotonicMillis();
|
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- if ( lastTick != 0 && currentTime > lastTick + earlyWarningEvery && !Boolean.getBoolean("disable.watchdog") )
|
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+ MinecraftServer server = MinecraftServer.getServer();
|
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+ if (lastTick != 0 && hasStarted && (!server.isRunning() || (currentTime > lastTick + earlyWarningEvery && !Boolean.getBoolean("disable.watchdog")) ))
|
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{
|
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- boolean isLongTimeout = currentTime > lastTick + timeoutTime;
|
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+ boolean isLongTimeout = currentTime > lastTick + timeoutTime || (!server.isRunning() && !server.hasStopped() && currentTime > lastTick + 1000);
|
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// Don't spam early warning dumps
|
|
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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+ if ( !isLongTimeout && server.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) {
|
|
// Paper end
|
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@@ -114,7 +116,7 @@ public class WatchdogThread extends Thread
|
|
log.log( Level.SEVERE, "------------------------------" );
|
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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 +137,24 @@ 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
|