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PaperMC/Spigot-Server-Patches/Add-exception-reporting-event.patch
Aikar c5851f632a Remove CraftScheduler Async Task Debugger 
I have not once ever seen this system help debug a crash.
One report of a suspected memory leak with the system.

This adds additional overhead to asynchronous task dispatching
2017-02-05 00:13:28 -05:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Joseph Hirschfeld <joe@ibj.io>
Date: Thu, 3 Mar 2016 03:15:41 -0600
Subject: [PATCH] Add exception reporting event
diff --git a/src/main/java/com/destroystokyo/paper/ServerSchedulerReportingWrapper.java b/src/main/java/com/destroystokyo/paper/ServerSchedulerReportingWrapper.java
new file mode 100644
index 000000000..93397188b
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/ServerSchedulerReportingWrapper.java
@@ -0,0 +0,0 @@
+package com.destroystokyo.paper;
+
+import com.google.common.base.Preconditions;
+import org.bukkit.craftbukkit.scheduler.CraftTask;
+import com.destroystokyo.paper.event.server.ServerExceptionEvent;
+import com.destroystokyo.paper.exception.ServerSchedulerException;
+
+/**
+ * Reporting wrapper to catch exceptions not natively
+ */
+public class ServerSchedulerReportingWrapper implements Runnable {
+
+ private final CraftTask internalTask;
+
+ public ServerSchedulerReportingWrapper(CraftTask internalTask) {
+ this.internalTask = Preconditions.checkNotNull(internalTask, "internalTask");
+ }
+
+ @Override
+ public void run() {
+ try {
+ internalTask.run();
+ } catch (RuntimeException e) {
+ internalTask.getOwner().getServer().getPluginManager().callEvent(
+ new ServerExceptionEvent(new ServerSchedulerException(e, internalTask))
+ );
+ throw e;
+ } catch (Throwable t) {
+ internalTask.getOwner().getServer().getPluginManager().callEvent(
+ new ServerExceptionEvent(new ServerSchedulerException(t, internalTask))
+ ); //Do not rethrow, since it is not permitted with Runnable#run
+ }
+ }
+
+ public CraftTask getInternalTask() {
+ return internalTask;
+ }
+}
\ No newline at end of file
diff --git a/src/main/java/net/minecraft/server/Chunk.java b/src/main/java/net/minecraft/server/Chunk.java
index e1fc4ea6c..8f1a68d67 100644
--- a/src/main/java/net/minecraft/server/Chunk.java
+++ b/src/main/java/net/minecraft/server/Chunk.java
@@ -0,0 +0,0 @@
package net.minecraft.server;
+import com.destroystokyo.paper.exception.ServerInternalException;
import com.google.common.base.Predicate;
import com.google.common.collect.Maps;
import com.google.common.collect.Queues;
@@ -0,0 +0,0 @@ import org.apache.logging.log4j.Logger;
import com.google.common.collect.Lists; // CraftBukkit
import org.bukkit.Server; // CraftBukkit
+import org.bukkit.craftbukkit.util.CraftMagicNumbers; // Paper
public class Chunk {
@@ -0,0 +0,0 @@ public class Chunk {
this.tileEntities.remove(blockposition);
// Paper end
} else {
- System.out.println("Attempted to place a tile entity (" + tileentity + ") at " + tileentity.position.getX() + "," + tileentity.position.getY() + "," + tileentity.position.getZ()
- + " (" + org.bukkit.craftbukkit.util.CraftMagicNumbers.getMaterial(getBlockData(blockposition).getBlock()) + ") where there was no entity tile!");
- System.out.println("Chunk coordinates: " + (this.locX * 16) + "," + (this.locZ * 16));
- new Exception().printStackTrace();
+ // Paper start
+ ServerInternalException e = new ServerInternalException(
+ "Attempted to place a tile entity (" + tileentity + ") at " + tileentity.position.getX() + ","
+ + tileentity.position.getY() + "," + tileentity.position.getZ()
+ + " (" + CraftMagicNumbers.getMaterial(getBlockData(blockposition).getBlock()) + ") where there was no entity tile!\n" +
+ "Chunk coordinates: " + (this.locX * 16) + "," + (this.locZ * 16));
+ e.printStackTrace();
+ ServerInternalException.reportInternalException(e);
+ // Paper end
// CraftBukkit end
}
}
diff --git a/src/main/java/net/minecraft/server/ChunkProviderServer.java b/src/main/java/net/minecraft/server/ChunkProviderServer.java
index f7f2d12cf..b0a82e7ed 100644
--- a/src/main/java/net/minecraft/server/ChunkProviderServer.java
+++ b/src/main/java/net/minecraft/server/ChunkProviderServer.java
@@ -0,0 +0,0 @@ import java.util.Iterator;
import java.util.List;
import java.util.Set;
import javax.annotation.Nullable;
+import com.destroystokyo.paper.exception.ServerInternalException;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
@@ -0,0 +0,0 @@ public class ChunkProviderServer implements IChunkProvider {
return chunk;
} catch (Exception exception) {
- ChunkProviderServer.a.error("Couldn\'t load chunk", exception);
+ // Paper start
+ String msg = "Couldn\'t load chunk";
+ ChunkProviderServer.a.error(msg, exception);
+ ServerInternalException.reportInternalException(exception);
+ // Paper end
return null;
}
}
@@ -0,0 +0,0 @@ public class ChunkProviderServer implements IChunkProvider {
try (co.aikar.timings.Timing timed = world.timings.chunkSaveNop.startTiming()) {
this.chunkLoader.b(this.world, chunk);
} catch (Exception exception) {
- ChunkProviderServer.a.error("Couldn\'t save entities", exception);
+ // Paper start
+ String msg = "Couldn\'t save entities";
+ ChunkProviderServer.a.error(msg, exception);
+ ServerInternalException.reportInternalException(exception);
+ // Paper end
}
}
@@ -0,0 +0,0 @@ public class ChunkProviderServer implements IChunkProvider {
chunk.setLastSaved(this.world.getTime());
this.chunkLoader.a(this.world, chunk);
} catch (IOException ioexception) {
- ChunkProviderServer.a.error("Couldn\'t save chunk", ioexception);
+ // Paper start
+ String msg = "Couldn\'t save chunk";
+ ChunkProviderServer.a.error(msg, ioexception);
+ ServerInternalException.reportInternalException(ioexception);
} catch (ExceptionWorldConflict exceptionworldconflict) {
- ChunkProviderServer.a.error("Couldn\'t save chunk; already in use by another instance of Minecraft?", exceptionworldconflict);
+ String msg = "Couldn\'t save chunk; already in use by another instance of Minecraft?";
+ ChunkProviderServer.a.error(msg, exceptionworldconflict);
+ ServerInternalException.reportInternalException(exceptionworldconflict);
}
}
diff --git a/src/main/java/net/minecraft/server/NameReferencingFileConverter.java b/src/main/java/net/minecraft/server/NameReferencingFileConverter.java
index 016c64e82..2ff8a6da0 100644
--- a/src/main/java/net/minecraft/server/NameReferencingFileConverter.java
+++ b/src/main/java/net/minecraft/server/NameReferencingFileConverter.java
@@ -0,0 +0,0 @@
package net.minecraft.server;
+import com.destroystokyo.paper.exception.ServerInternalException;
import com.google.common.base.Charsets;
import com.google.common.base.Predicate;
import com.google.common.collect.Iterators;
@@ -0,0 +0,0 @@ public class NameReferencingFileConverter {
root = NBTCompressedStreamTools.a(new java.io.FileInputStream(file1));
} catch (Exception exception) {
exception.printStackTrace();
+ ServerInternalException.reportInternalException(exception); // Paper
}
if (root != null) {
@@ -0,0 +0,0 @@ public class NameReferencingFileConverter {
NBTCompressedStreamTools.a(root, new java.io.FileOutputStream(file2));
} catch (Exception exception) {
exception.printStackTrace();
+ ServerInternalException.reportInternalException(exception); // Paper
}
}
// CraftBukkit end
diff --git a/src/main/java/net/minecraft/server/PersistentCollection.java b/src/main/java/net/minecraft/server/PersistentCollection.java
index 936d6c640..50056f49a 100644
--- a/src/main/java/net/minecraft/server/PersistentCollection.java
+++ b/src/main/java/net/minecraft/server/PersistentCollection.java
@@ -0,0 +0,0 @@
package net.minecraft.server;
+import com.destroystokyo.paper.exception.ServerInternalException;
import com.google.common.collect.Lists;
import com.google.common.collect.Maps;
import java.io.DataInputStream;
@@ -0,0 +0,0 @@ public class PersistentCollection {
}
} catch (Exception exception1) {
exception1.printStackTrace();
+ ServerInternalException.reportInternalException(exception1); // Paper
}
}
@@ -0,0 +0,0 @@ public class PersistentCollection {
}
} catch (Exception exception) {
exception.printStackTrace();
+ ServerInternalException.reportInternalException(exception); // Paper
}
}
diff --git a/src/main/java/net/minecraft/server/RegionFile.java b/src/main/java/net/minecraft/server/RegionFile.java
index b0279ac3e..be13c1131 100644
--- a/src/main/java/net/minecraft/server/RegionFile.java
+++ b/src/main/java/net/minecraft/server/RegionFile.java
@@ -0,0 +0,0 @@
package net.minecraft.server;
+import com.destroystokyo.paper.exception.ServerInternalException;
import com.google.common.collect.Lists;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
@@ -0,0 +0,0 @@ public class RegionFile {
}
} catch (IOException ioexception) {
ioexception.printStackTrace();
+ ServerInternalException.reportInternalException(ioexception); // Paper
}
}
@@ -0,0 +0,0 @@ public class RegionFile {
this.b(i, j, (int) (MinecraftServer.aw() / 1000L));
} catch (IOException ioexception) {
ioexception.printStackTrace();
+ ServerInternalException.reportInternalException(ioexception); // Paper
}
}
diff --git a/src/main/java/net/minecraft/server/RegionFileCache.java b/src/main/java/net/minecraft/server/RegionFileCache.java
index 933934fb6..19fbf9b4a 100644
--- a/src/main/java/net/minecraft/server/RegionFileCache.java
+++ b/src/main/java/net/minecraft/server/RegionFileCache.java
@@ -0,0 +0,0 @@
package net.minecraft.server;
+import com.destroystokyo.paper.exception.ServerInternalException;
import com.google.common.collect.Maps;
import java.io.DataInputStream;
import java.io.DataOutputStream;
@@ -0,0 +0,0 @@ public class RegionFileCache {
}
} catch (IOException ioexception) {
ioexception.printStackTrace();
+ ServerInternalException.reportInternalException(ioexception); // Paper
}
}
diff --git a/src/main/java/net/minecraft/server/SpawnerCreature.java b/src/main/java/net/minecraft/server/SpawnerCreature.java
index a05fad54f..29219ec7b 100644
--- a/src/main/java/net/minecraft/server/SpawnerCreature.java
+++ b/src/main/java/net/minecraft/server/SpawnerCreature.java
@@ -0,0 +0,0 @@ import java.util.Random;
import java.util.Set;
// CraftBukkit start
+import com.destroystokyo.paper.exception.ServerInternalException;
import org.bukkit.craftbukkit.util.LongHash;
import org.bukkit.craftbukkit.util.LongHashSet;
import org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason;
@@ -0,0 +0,0 @@ public final class SpawnerCreature {
entityinsentient = (EntityInsentient) biomebase_biomemeta.b.getConstructor(new Class[] { World.class}).newInstance(new Object[] { worldserver});
} catch (Exception exception) {
exception.printStackTrace();
+ ServerInternalException.reportInternalException(exception); // Paper
return j1;
}
@@ -0,0 +0,0 @@ public final class SpawnerCreature {
entityinsentient = (EntityInsentient) biomebase_biomemeta.b.getConstructor(new Class[] { World.class}).newInstance(new Object[] { world});
} catch (Exception exception) {
exception.printStackTrace();
+ ServerInternalException.reportInternalException(exception); // Paper
continue;
}
diff --git a/src/main/java/net/minecraft/server/VillageSiege.java b/src/main/java/net/minecraft/server/VillageSiege.java
index 7af5b7dd7..2b498024c 100644
--- a/src/main/java/net/minecraft/server/VillageSiege.java
+++ b/src/main/java/net/minecraft/server/VillageSiege.java
@@ -0,0 +0,0 @@
package net.minecraft.server;
+import com.destroystokyo.paper.exception.ServerInternalException;
+
import java.util.Iterator;
import java.util.List;
import javax.annotation.Nullable;
@@ -0,0 +0,0 @@ public class VillageSiege {
entityzombie.prepare(this.a.D(new BlockPosition(entityzombie)), (GroupDataEntity) null);
} catch (Exception exception) {
exception.printStackTrace();
+ ServerInternalException.reportInternalException(exception); // Paper
return false;
}
diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
index 8b8054ca0..b11ebed03 100644
--- a/src/main/java/net/minecraft/server/World.java
+++ b/src/main/java/net/minecraft/server/World.java
@@ -0,0 +0,0 @@
package net.minecraft.server;
+import com.destroystokyo.paper.event.server.ServerExceptionEvent;
+import com.destroystokyo.paper.exception.ServerInternalException;
import com.google.common.base.Function;
import com.google.common.base.Objects;
import com.google.common.base.Predicate;
@@ -0,0 +0,0 @@ public abstract class World implements IBlockAccess {
} catch (Throwable throwable1) {
entity.tickTimer.stopTiming();
// Paper start - Prevent tile entity and entity crashes
- System.err.println("Entity threw exception at " + entity.world.getWorld().getName() + ":" + entity.locX + "," + entity.locY + "," + entity.locZ);
+ String msg = "Entity threw exception at " + entity.world.getWorld().getName() + ":" + entity.locX + "," + entity.locY + "," + entity.locZ;
+ System.err.println(msg);
throwable1.printStackTrace();
+ getServer().getPluginManager().callEvent(new ServerExceptionEvent(new ServerInternalException(msg, throwable1)));
entity.dead = true;
continue;
// Paper end
@@ -0,0 +0,0 @@ public abstract class World implements IBlockAccess {
this.methodProfiler.b();
} catch (Throwable throwable2) {
// Paper start - Prevent tile entity and entity crashes
- System.err.println("TileEntity threw exception at " + tileentity.world.getWorld().getName() + ":" + tileentity.position.getX() + "," + tileentity.position.getY() + "," + tileentity.position.getZ());
+ String msg = "TileEntity threw exception at " + tileentity.world.getWorld().getName() + ":" + tileentity.position.getX() + "," + tileentity.position.getY() + "," + tileentity.position.getZ();
+ System.err.println(msg);
throwable2.printStackTrace();
+ getServer().getPluginManager().callEvent(new ServerExceptionEvent(new ServerInternalException(msg, throwable2)));
tilesThisCycle--;
this.tileEntityListTick.remove(tileTickPosition--);
continue;
diff --git a/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java b/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java
index 9952b64be..e30cfb7b7 100644
--- a/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java
+++ b/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java
@@ -0,0 +0,0 @@ import java.util.concurrent.atomic.AtomicReference;
import java.util.logging.Level;
import co.aikar.timings.MinecraftTimings; // Paper
+import com.destroystokyo.paper.ServerSchedulerReportingWrapper;
+import com.destroystokyo.paper.event.server.ServerExceptionEvent;
+import com.destroystokyo.paper.exception.ServerSchedulerException;
import org.apache.commons.lang.Validate;
import org.bukkit.plugin.IllegalPluginAccessException;
import org.bukkit.plugin.Plugin;
@@ -0,0 +0,0 @@ public class CraftScheduler implements BukkitScheduler {
try {
task.run();
} catch (final Throwable throwable) {
+ // Paper start
+ String msg = String.format(
+ "Task #%s for %s generated an exception",
+ task.getTaskId(),
+ task.getOwner().getDescription().getFullName());
task.getOwner().getLogger().log(
Level.WARNING,
- String.format(
- "Task #%s for %s generated an exception",
- task.getTaskId(),
- task.getOwner().getDescription().getFullName()),
+ msg,
throwable);
+ task.getOwner().getServer().getPluginManager().callEvent(
+ new ServerExceptionEvent(new ServerSchedulerException(msg, throwable, task))
+ );
+ // Paper end
}
parsePending();
} else {
debugTail = debugTail.setNext(new CraftAsyncDebugger(currentTick + RECENT_TICKS, task.getOwner(), task.getTaskClass()));
- executor.execute(task);
+ executor.execute(new ServerSchedulerReportingWrapper(task)); // Paper
// We don't need to parse pending
// (async tasks must live with race-conditions if they attempt to cancel between these few lines of code)
}
--
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