From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Aikar Date: Sat, 21 Jul 2018 08:25:40 -0400 Subject: [PATCH] Add Debug Entities option to debug dupe uuid issues Add -Ddebug.entities=true to your JVM flags to gain more information diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java index 97d5437df10a6d0124e944404e88650547b7d8a8..083db6c1899b5391231b6d5d5044a334212f148c 100644 --- a/src/main/java/net/minecraft/server/level/ChunkMap.java +++ b/src/main/java/net/minecraft/server/level/ChunkMap.java @@ -1145,6 +1145,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider } else { ChunkMap.TrackedEntity playerchunkmap_entitytracker = new ChunkMap.TrackedEntity(entity, i, j, entitytypes.trackDeltas()); + entity.tracker = playerchunkmap_entitytracker; // Paper - Fast access to tracker this.entityMap.put(entity.getId(), playerchunkmap_entitytracker); playerchunkmap_entitytracker.updatePlayers(this.level.players()); if (entity instanceof ServerPlayer) { @@ -1186,7 +1187,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider if (playerchunkmap_entitytracker1 != null) { playerchunkmap_entitytracker1.broadcastRemoved(); } - + entity.tracker = null; // Paper - We're no longer tracked } protected void tick() { diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java index 914241a57c304fde220bc546261d6e959445772a..a5d7781b13a6d61238d026f064512f7162e1e868 100644 --- a/src/main/java/net/minecraft/server/level/ServerLevel.java +++ b/src/main/java/net/minecraft/server/level/ServerLevel.java @@ -191,6 +191,9 @@ public class ServerLevel extends net.minecraft.world.level.Level implements Worl public final LevelStorageSource.LevelStorageAccess convertable; public final UUID uuid; public boolean hasPhysicsEvent = true; // Paper + private static Throwable getAddToWorldStackTrace(Entity entity) { + return new Throwable(entity + " Added to world at " + new java.util.Date()); + } @Override public LevelChunk getChunkIfLoaded(int x, int z) { // Paper - this was added in world too but keeping here for NMS ABI return this.chunkSource.getChunk(x, z, false); @@ -1032,8 +1035,28 @@ public class ServerLevel extends net.minecraft.world.level.Level implements Worl // CraftBukkit start private boolean addEntity0(Entity entity, CreatureSpawnEvent.SpawnReason spawnReason) { org.spigotmc.AsyncCatcher.catchOp("entity add"); // Spigot - if (entity.valid) { MinecraftServer.LOGGER.error("Attempted Double World add on " + entity, new Throwable()); return true; } // Paper + // Paper start + if (entity.valid) { + MinecraftServer.LOGGER.error("Attempted Double World add on " + entity, new Throwable()); + + if (DEBUG_ENTITIES) { + Throwable thr = entity.addedToWorldStack; + if (thr == null) { + MinecraftServer.LOGGER.error("Double add entity has no add stacktrace"); + } else { + MinecraftServer.LOGGER.error("Double add stacktrace: ", thr); + } + } + return true; + } + // Paper end if (entity.removed) { + // Paper start + if (DEBUG_ENTITIES) { + new Throwable("Tried to add entity " + entity + " but it was marked as removed already").printStackTrace(); // CraftBukkit + getAddToWorldStackTrace(entity).printStackTrace(); + } + // Paper end // WorldServer.LOGGER.warn("Tried to add entity {} but it was marked as removed already", EntityTypes.getName(entity.getEntityType())); // CraftBukkit return false; } else if (this.isUUIDUsed(entity)) { @@ -1231,7 +1254,24 @@ public class ServerLevel extends net.minecraft.world.level.Level implements Worl } } - this.entitiesByUuid.put(entity.getUUID(), entity); + if (DEBUG_ENTITIES) { + entity.addedToWorldStack = getAddToWorldStackTrace(entity); + } + + Entity old = this.entitiesByUuid.put(entity.getUUID(), entity); + if (old != null && old.getId() != entity.getId() && old.valid) { + Logger logger = LogManager.getLogger(); + logger.error("Overwrote an existing entity " + old + " with " + entity); + if (DEBUG_ENTITIES) { + if (old.addedToWorldStack != null) { + old.addedToWorldStack.printStackTrace(); + } else { + logger.error("Oddly, the old entity was not added to the world in the normal way. Plugins?"); + } + entity.addedToWorldStack.printStackTrace(); + } + } + this.getChunkSource().addEntity(entity); // CraftBukkit start - SPIGOT-5278 if (entity instanceof Drowned) { diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java index e49fe2de6a53bdd16f0cd09b691f01f1866ffb4f..9d8682d367522bd85894947ad2f2a53cf0aa123a 100644 --- a/src/main/java/net/minecraft/world/entity/Entity.java +++ b/src/main/java/net/minecraft/world/entity/Entity.java @@ -47,6 +47,7 @@ import net.minecraft.network.syncher.SynchedEntityData; import net.minecraft.resources.ResourceKey; import net.minecraft.resources.ResourceLocation; import net.minecraft.server.MinecraftServer; +import net.minecraft.server.level.ChunkMap; import net.minecraft.server.level.ServerLevel; import net.minecraft.server.level.ServerPlayer; import net.minecraft.server.level.TicketType; @@ -160,6 +161,8 @@ public abstract class Entity implements Nameable, CommandSource, net.minecraft.s public com.destroystokyo.paper.loottable.PaperLootableInventoryData lootableData; // Paper private CraftEntity bukkitEntity; + ChunkMap.TrackedEntity tracker; // Paper + public Throwable addedToWorldStack; // Paper - entity debug public CraftEntity getBukkitEntity() { if (bukkitEntity == null) { bukkitEntity = CraftEntity.getEntity(level.getCraftServer(), this); diff --git a/src/main/java/net/minecraft/world/level/Level.java b/src/main/java/net/minecraft/world/level/Level.java index b4248d46ccb1a95e21601bca1198512287edcabf..0c6c3b211b05eda8f9ab47ef0a01cc520ae28201 100644 --- a/src/main/java/net/minecraft/world/level/Level.java +++ b/src/main/java/net/minecraft/world/level/Level.java @@ -121,6 +121,7 @@ public abstract class Level implements LevelAccessor, AutoCloseable { public boolean pvpMode; public boolean keepSpawnInMemory = true; public org.bukkit.generator.ChunkGenerator generator; + public static final boolean DEBUG_ENTITIES = Boolean.getBoolean("debug.entities"); // Paper public boolean captureBlockStates = false; public boolean captureTreeGeneration = false;