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Paper/patches/server/0747-Detail-more-information-in-watchdog-dumps.patch
Nassim Jahnke 1358d1e914
Updated Upstream (CraftBukkit/Spigot) (#7580) 
Upstream has released updates that appear to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing

Bukkit Changes:
881e06e5 PR-725: Add Item Unlimited Lifetime APIs

CraftBukkit Changes:
74c08312 SPIGOT-6962: Call EntityChangeBlockEvent when when FallingBlockEntity starts to fall
64db5126 SPIGOT-6959: Make /loot command ignore empty items for spawn
2d760831 Increase outdated build delay
9ed7e4fb SPIGOT-6138, SPIGOT-6415: Don't call CreatureSpawnEvent after cross-dimensional travel
fc4ad813 SPIGOT-6895: Trees grown with applyBoneMeal() don't fire the StructureGrowthEvent
59733a2e SPIGOT-6961: Actually return a copy of the ItemMeta

Spigot Changes:
ffceeae3 SPIGOT-6956: Drop unload queue patch as attempt at fixing stop issue
e19ddabd PR-1011: Add Item Unlimited Lifetime APIs
34d40b0e SPIGOT-2942: give command fires PlayerDropItemEvent, cancelling it causes Item Duplication
2022-03-13 08:47:54 +01:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Spottedleaf <spottedleaf@spottedleaf.dev>
Date: Thu, 26 Mar 2020 21:59:32 -0700
Subject: [PATCH] Detail more information in watchdog dumps
- Dump position, world, velocity, and uuid for currently ticking entities
- Dump player name, player uuid, position, and world for packet handling
diff --git a/src/main/java/net/minecraft/network/Connection.java b/src/main/java/net/minecraft/network/Connection.java
index 2717252c8c87abeb90c9a0ee82e574276e9d01cf..47eadb4a08953a45300d769518af22b1463f4d11 100644
--- a/src/main/java/net/minecraft/network/Connection.java
+++ b/src/main/java/net/minecraft/network/Connection.java
@@ -464,7 +464,14 @@ public class Connection extends SimpleChannelInboundHandler<Packet<?>> {
}
if (this.packetListener instanceof ServerGamePacketListenerImpl) {
+ // Paper start - detailed watchdog information
+ net.minecraft.network.protocol.PacketUtils.packetProcessing.push(this.packetListener);
+ try {
+ // Paper end - detailed watchdog information
((ServerGamePacketListenerImpl) this.packetListener).tick();
+ } finally { // Paper start - detailed watchdog information
+ net.minecraft.network.protocol.PacketUtils.packetProcessing.pop();
+ } // Paper start - detailed watchdog information
}
if (!this.isConnected() && !this.disconnectionHandled) {
diff --git a/src/main/java/net/minecraft/network/protocol/PacketUtils.java b/src/main/java/net/minecraft/network/protocol/PacketUtils.java
index 97b05b7145c6a3a379de31b8988c909da9b21139..f7bb26e8b7a74a9ae5b469351b2fccc6fc80ab6a 100644
--- a/src/main/java/net/minecraft/network/protocol/PacketUtils.java
+++ b/src/main/java/net/minecraft/network/protocol/PacketUtils.java
@@ -15,6 +15,24 @@ public class PacketUtils {
private static final Logger LOGGER = LogUtils.getLogger();
+ // Paper start - detailed watchdog information
+ public static final java.util.concurrent.ConcurrentLinkedDeque<PacketListener> packetProcessing = new java.util.concurrent.ConcurrentLinkedDeque<>();
+ static final java.util.concurrent.atomic.AtomicLong totalMainThreadPacketsProcessed = new java.util.concurrent.atomic.AtomicLong();
+
+ public static long getTotalProcessedPackets() {
+ return totalMainThreadPacketsProcessed.get();
+ }
+
+ public static java.util.List<PacketListener> getCurrentPacketProcessors() {
+ java.util.List<PacketListener> ret = new java.util.ArrayList<>(4);
+ for (PacketListener listener : packetProcessing) {
+ ret.add(listener);
+ }
+
+ return ret;
+ }
+ // Paper end - detailed watchdog information
+
public PacketUtils() {}
public static <T extends PacketListener> void ensureRunningOnSameThread(Packet<T> packet, T listener, ServerLevel world) throws RunningOnDifferentThreadException {
@@ -24,6 +42,8 @@ public class PacketUtils {
public static <T extends PacketListener> void ensureRunningOnSameThread(Packet<T> packet, T listener, BlockableEventLoop<?> engine) throws RunningOnDifferentThreadException {
if (!engine.isSameThread()) {
engine.executeIfPossible(() -> {
+ packetProcessing.push(listener); // Paper - detailed watchdog information
+ try { // Paper - detailed watchdog information
if (MinecraftServer.getServer().hasStopped() || (listener instanceof ServerGamePacketListenerImpl && ((ServerGamePacketListenerImpl) listener).processedDisconnect)) return; // CraftBukkit, MC-142590
if (listener.getConnection().isConnected()) {
co.aikar.timings.Timing timing = co.aikar.timings.MinecraftTimings.getPacketTiming(packet); // Paper - timings
@@ -45,6 +65,12 @@ public class PacketUtils {
} else {
PacketUtils.LOGGER.debug("Ignoring packet due to disconnection: {}", packet);
}
+ // Paper start - detailed watchdog information
+ } finally {
+ totalMainThreadPacketsProcessed.getAndIncrement();
+ packetProcessing.pop();
+ }
+ // Paper end - detailed watchdog information
});
throw RunningOnDifferentThreadException.RUNNING_ON_DIFFERENT_THREAD;
diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
index 381a4283715290162f445265e61294256e6b3075..9fa7a01db61ba91b79eda4f7e4fd4f0001712808 100644
--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
+++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
@@ -981,7 +981,26 @@ public class ServerLevel extends Level implements WorldGenLevel {
}
+ // Paper start - log detailed entity tick information
+ // TODO replace with varhandle
+ static final java.util.concurrent.atomic.AtomicReference<Entity> currentlyTickingEntity = new java.util.concurrent.atomic.AtomicReference<>();
+
+ public static List<Entity> getCurrentlyTickingEntities() {
+ Entity ticking = currentlyTickingEntity.get();
+ List<Entity> ret = java.util.Arrays.asList(ticking == null ? new Entity[0] : new Entity[] { ticking });
+
+ return ret;
+ }
+ // Paper end - log detailed entity tick information
+
public void tickNonPassenger(Entity entity) {
+ // Paper start - log detailed entity tick information
+ io.papermc.paper.util.TickThread.ensureTickThread("Cannot tick an entity off-main");
+ try {
+ if (currentlyTickingEntity.get() == null) {
+ currentlyTickingEntity.lazySet(entity);
+ }
+ // Paper end - log detailed entity tick information
++TimingHistory.entityTicks; // Paper - timings
// Spigot start
co.aikar.timings.Timing timer; // Paper
@@ -1021,7 +1040,13 @@ public class ServerLevel extends Level implements WorldGenLevel {
this.tickPassenger(entity, entity1);
}
// } finally { timer.stopTiming(); } // Paper - timings - move up
-
+ // Paper start - log detailed entity tick information
+ } finally {
+ if (currentlyTickingEntity.get() == entity) {
+ currentlyTickingEntity.lazySet(null);
+ }
+ }
+ // Paper end - log detailed entity tick information
}
private void tickPassenger(Entity vehicle, Entity passenger) {
diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
index 78478f6e8bd07c2b4e11b627819a664e706efb8b..1f9f1ff4ccc3f45008df45274b8a154f0f802688 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -908,7 +908,42 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, i
return this.onGround;
}
+ // Paper start - detailed watchdog information
+ public final Object posLock = new Object(); // Paper - log detailed entity tick information
+
+ private Vec3 moveVector;
+ private double moveStartX;
+ private double moveStartY;
+ private double moveStartZ;
+
+ public final Vec3 getMoveVector() {
+ return this.moveVector;
+ }
+
+ public final double getMoveStartX() {
+ return this.moveStartX;
+ }
+
+ public final double getMoveStartY() {
+ return this.moveStartY;
+ }
+
+ public final double getMoveStartZ() {
+ return this.moveStartZ;
+ }
+ // Paper end - detailed watchdog information
+
public void move(MoverType movementType, Vec3 movement) {
+ // Paper start - detailed watchdog information
+ io.papermc.paper.util.TickThread.ensureTickThread("Cannot move an entity off-main");
+ synchronized (this.posLock) {
+ this.moveStartX = this.getX();
+ this.moveStartY = this.getY();
+ this.moveStartZ = this.getZ();
+ this.moveVector = movement;
+ }
+ try {
+ // Paper end - detailed watchdog information
if (this.noPhysics) {
this.setPos(this.getX() + movement.x, this.getY() + movement.y, this.getZ() + movement.z);
} else {
@@ -1079,6 +1114,13 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, i
this.level.getProfiler().pop();
}
}
+ // Paper start - detailed watchdog information
+ } finally {
+ synchronized (this.posLock) { // Paper
+ this.moveVector = null;
+ } // Paper
+ }
+ // Paper end - detailed watchdog information
}
protected boolean isHorizontalCollisionMinor(Vec3 adjustedMovement) {
@@ -3886,7 +3928,9 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, i
}
public void setDeltaMovement(Vec3 velocity) {
+ synchronized (this.posLock) { // Paper
this.deltaMovement = velocity;
+ } // Paper
}
public void setDeltaMovement(double x, double y, double z) {
@@ -3962,7 +4006,9 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, i
}
// Paper end - fix MC-4
if (this.position.x != x || this.position.y != y || this.position.z != z) {
+ synchronized (this.posLock) { // Paper
this.position = new Vec3(x, y, z);
+ } // Paper
int i = Mth.floor(x);
int j = Mth.floor(y);
int k = Mth.floor(z);
diff --git a/src/main/java/org/spigotmc/WatchdogThread.java b/src/main/java/org/spigotmc/WatchdogThread.java
index dcfbe77bdb25d9c58ffb7b75c48bdb580bc0de47..bee38307494188800886a1622fed229b88dbd8f1 100644
--- a/src/main/java/org/spigotmc/WatchdogThread.java
+++ b/src/main/java/org/spigotmc/WatchdogThread.java
@@ -23,6 +23,78 @@ public class WatchdogThread extends Thread
private volatile long lastTick;
private volatile boolean stopping;
+ // Paper start - log detailed tick information
+ private void dumpEntity(net.minecraft.world.entity.Entity entity) {
+ Logger log = Bukkit.getServer().getLogger();
+ double posX, posY, posZ;
+ net.minecraft.world.phys.Vec3 mot;
+ double moveStartX, moveStartY, moveStartZ;
+ net.minecraft.world.phys.Vec3 moveVec;
+ synchronized (entity.posLock) {
+ posX = entity.getX();
+ posY = entity.getY();
+ posZ = entity.getZ();
+ mot = entity.getDeltaMovement();
+ moveStartX = entity.getMoveStartX();
+ moveStartY = entity.getMoveStartY();
+ moveStartZ = entity.getMoveStartZ();
+ moveVec = entity.getMoveVector();
+ }
+
+ String entityType = entity.getMinecraftKey().toString();
+ java.util.UUID entityUUID = entity.getUUID();
+ net.minecraft.world.level.Level world = entity.level;
+
+ log.log(Level.SEVERE, "Ticking entity: " + entityType + ", entity class: " + entity.getClass().getName());
+ log.log(Level.SEVERE, "Entity status: removed: " + entity.isRemoved() + ", valid: " + entity.valid + ", alive: " + entity.isAlive() + ", is passenger: " + entity.isPassenger());
+ log.log(Level.SEVERE, "Entity UUID: " + entityUUID);
+ log.log(Level.SEVERE, "Position: world: '" + (world == null ? "unknown world?" : world.getWorld().getName()) + "' at location (" + posX + ", " + posY + ", " + posZ + ")");
+ log.log(Level.SEVERE, "Velocity: " + (mot == null ? "unknown velocity" : mot.toString()) + " (in blocks per tick)");
+ log.log(Level.SEVERE, "Entity AABB: " + entity.getBoundingBox());
+ if (moveVec != null) {
+ log.log(Level.SEVERE, "Move call information: ");
+ log.log(Level.SEVERE, "Start position: (" + moveStartX + ", " + moveStartY + ", " + moveStartZ + ")");
+ log.log(Level.SEVERE, "Move vector: " + moveVec.toString());
+ }
+ }
+
+ private void dumpTickingInfo() {
+ Logger log = Bukkit.getServer().getLogger();
+
+ // ticking entities
+ for (net.minecraft.world.entity.Entity entity : net.minecraft.server.level.ServerLevel.getCurrentlyTickingEntities()) {
+ this.dumpEntity(entity);
+ net.minecraft.world.entity.Entity vehicle = entity.getVehicle();
+ if (vehicle != null) {
+ log.log(Level.SEVERE, "Detailing vehicle for above entity:");
+ this.dumpEntity(vehicle);
+ }
+ }
+
+ // packet processors
+ for (net.minecraft.network.PacketListener packetListener : net.minecraft.network.protocol.PacketUtils.getCurrentPacketProcessors()) {
+ if (packetListener instanceof net.minecraft.server.network.ServerGamePacketListenerImpl) {
+ net.minecraft.server.level.ServerPlayer player = ((net.minecraft.server.network.ServerGamePacketListenerImpl)packetListener).player;
+ long totalPackets = net.minecraft.network.protocol.PacketUtils.getTotalProcessedPackets();
+ if (player == null) {
+ log.log(Level.SEVERE, "Handling packet for player connection or ticking player connection (null player): " + packetListener);
+ log.log(Level.SEVERE, "Total packets processed on the main thread for all players: " + totalPackets);
+ } else {
+ this.dumpEntity(player);
+ net.minecraft.world.entity.Entity vehicle = player.getVehicle();
+ if (vehicle != null) {
+ log.log(Level.SEVERE, "Detailing vehicle for above entity:");
+ this.dumpEntity(vehicle);
+ }
+ log.log(Level.SEVERE, "Total packets processed on the main thread for all players: " + totalPackets);
+ }
+ } else {
+ log.log(Level.SEVERE, "Handling packet for connection: " + packetListener);
+ }
+ }
+ }
+ // Paper end - log detailed tick information
+
private WatchdogThread(long timeoutTime, boolean restart)
{
super( "Paper Watchdog Thread" );
@@ -121,6 +193,7 @@ 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
+ this.dumpTickingInfo(); // Paper - log detailed tick information
WatchdogThread.dumpThread( ManagementFactory.getThreadMXBean().getThreadInfo( server.serverThread.getId(), Integer.MAX_VALUE ), log );
log.log( Level.SEVERE, "------------------------------" );
//
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