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Misc thread dumps (#5200)

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Shane Freeder 2021-02-23 21:06:12 +00:00 committed by GitHub
parent a0093e142b
commit d9b02e94d2
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Spigot-Server-Patches/0675-misc-debugging-dumps.patch Normal file
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@ -0,0 +1,83 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Shane Freeder <theboyetronic@gmail.com>
Date: Thu, 18 Feb 2021 20:23:28 +0000
Subject: [PATCH] misc debugging dumps
diff --git a/src/main/java/io/papermc/paper/util/TraceUtil.java b/src/main/java/io/papermc/paper/util/TraceUtil.java
new file mode 100644
index 0000000000000000000000000000000000000000..d5e5c6153675855bb8798b11d905b5f2d6ea158e
--- /dev/null
+++ b/src/main/java/io/papermc/paper/util/TraceUtil.java
@@ -0,0 +1,14 @@
+package io.papermc.paper.util;
+
+import org.bukkit.Bukkit;
+
+public final class TraceUtil {
+
+ public static void dumpTraceForThread(Thread thread, String reason) {
+ Bukkit.getLogger().warning(thread.getName() + ": " + reason);
+ StackTraceElement[] trace = thread.getStackTrace();
+ for (StackTraceElement traceElement : trace) {
+ Bukkit.getLogger().warning("\tat " + traceElement);
+ }
+ }
+}
diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index ccf2d0b090f0c360dfc7886bb0726e099acec42c..ccac3589820f244f36dac310d08091f218d5935e 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -15,6 +15,7 @@ import io.netty.buffer.ByteBuf;
import io.netty.buffer.ByteBufOutputStream;
import io.netty.buffer.Unpooled;
import io.papermc.paper.event.entity.EntityMoveEvent;
+import io.papermc.paper.util.TraceUtil;
import it.unimi.dsi.fastutil.longs.LongIterator;
import java.awt.image.BufferedImage;
import java.io.BufferedWriter;
@@ -731,6 +732,7 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
// CraftBukkit start
private boolean hasStopped = false;
public volatile boolean hasFullyShutdown = false; // Paper
+ private boolean hasLoggedStop = false; // Paper
private final Object stopLock = new Object();
public final boolean hasStopped() {
synchronized (stopLock) {
@@ -745,6 +747,7 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
if (hasStopped) return;
hasStopped = true;
}
+ if (!hasLoggedStop && isDebugging()) TraceUtil.dumpTraceForThread(this.getThread(), "Server stopped"); // Paper
// Paper start - kill main thread, and kill it hard
shutdownThread = Thread.currentThread();
org.spigotmc.WatchdogThread.doStop(); // Paper
@@ -861,6 +864,8 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
public void safeShutdown(boolean flag, boolean isRestarting) {
this.isRunning = false;
this.isRestarting = isRestarting;
+ this.hasLoggedStop = true; // Paper
+ if (isDebugging()) TraceUtil.dumpTraceForThread(this.getThread(), "Server stopped"); // Paper
if (flag) {
try {
this.serverThread.join();
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
index 85023c68a9c85802383cfcf52ec21392abdf3d85..ea1c47ff81d88e1b8d003b66e992727b943b7186 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
@@ -18,6 +18,7 @@ import com.mojang.serialization.Lifecycle;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.ByteBufOutputStream;
import io.netty.buffer.Unpooled;
+import io.papermc.paper.util.TraceUtil;
import it.unimi.dsi.fastutil.objects.Object2ObjectLinkedOpenHashMap;
import java.awt.image.BufferedImage;
import java.io.File;
@@ -938,6 +939,7 @@ public final class CraftServer implements Server {
plugin.getDescription().getName(),
"This plugin is not properly shutting down its async tasks when it is being reloaded. This may cause conflicts with the newly loaded version of the plugin"
));
+ if (console.isDebugging()) TraceUtil.dumpTraceForThread(worker.getThread(), "still running"); // Paper
}
loadPlugins();
enablePlugins(PluginLoadOrder.STARTUP);