Paper/Spigot-Server-Patches/0676-misc-debugging-dumps.patch
Shane Freeder 89be8185db
Don't grab the threads stacktrace when dumping same thread
For some reason, this doesn't always seem to capture all states of shutdown,
either the logger is just being fun, or, potentially, the thread is already
marked as dead when we're getting called so the trace is not generated through
the method on Thread
2021-02-24 18:45:21 +00:00

88 Zeilen
4.2 KiB
Diff

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..2d5494d2813b773e60ddba6790b750a9a08f21f8
--- /dev/null
+++ b/src/main/java/io/papermc/paper/util/TraceUtil.java
@@ -0,0 +1,18 @@
+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);
+ }
+ }
+
+ public static void dumpTraceForThread(String reason) {
+ new Throwable(reason).printStackTrace();
+ }
+}
diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index ccf2d0b090f0c360dfc7886bb0726e099acec42c..d6ca2ac9a5047b8d6840c8b4985ab75f35bea919 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("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("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 cd02c294ebbf95bf939a2d19feff0e29bb87edb1..968349163b15cf40dac9717072740ce48231b7c8 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;
@@ -941,6 +942,7 @@ 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);