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 1.17: Needs to be reworked for new entity storage system diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java index cdcad9e1470a0b465ee96d1f2b4b8b31e8c3d219..165daf5e4b44425974703e9f603955fa09984f1b 100644 --- a/src/main/java/net/minecraft/server/level/ChunkMap.java +++ b/src/main/java/net/minecraft/server/level/ChunkMap.java @@ -865,6 +865,7 @@ 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) { @@ -907,7 +908,7 @@ 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 1170b2fb6396fab0aa30a097bc8957e2551f4f1c..5de07950d549716e917ec3fd2f364c994007333e 100644 --- a/src/main/java/net/minecraft/server/level/ServerLevel.java +++ b/src/main/java/net/minecraft/server/level/ServerLevel.java @@ -221,6 +221,9 @@ public class ServerLevel extends Level implements WorldGenLevel { public final LevelStorageSource.LevelStorageAccess convertable; public final UUID uuid; public boolean hasPhysicsEvent = true; // Paper + public 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); @@ -1413,7 +1416,28 @@ public class ServerLevel extends Level implements WorldGenLevel { // CraftBukkit start private boolean addEntity(Entity entity, CreatureSpawnEvent.SpawnReason spawnReason) { org.spigotmc.AsyncCatcher.catchOp("entity add"); // Spigot + // 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.isRemoved()) { + // 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.getKey(entity.getType())); // CraftBukkit return false; } else { diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java index 5ec7104201f4280208d8f0e0bae6b5e481c7bc56..63f9f874ef9da0d5f0c6d6df2901be27df5e30a0 100644 --- a/src/main/java/net/minecraft/world/entity/Entity.java +++ b/src/main/java/net/minecraft/world/entity/Entity.java @@ -238,6 +238,8 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource { public com.destroystokyo.paper.loottable.PaperLootableInventoryData lootableData; // Paper private CraftEntity bukkitEntity; + public @org.jetbrains.annotations.Nullable net.minecraft.server.level.ChunkMap.TrackedEntity tracker; // Paper + public @Nullable Throwable addedToWorldStack; // Paper - entity debug public CraftEntity getBukkitEntity() { if (this.bukkitEntity == null) { this.bukkitEntity = CraftEntity.getEntity(this.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 8320bece16dfa339e33801e43ff2f297bc876001..18234d71eba7d2a2874f3e5c9628d82970acc033 100644 --- a/src/main/java/net/minecraft/world/level/Level.java +++ b/src/main/java/net/minecraft/world/level/Level.java @@ -150,6 +150,7 @@ 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 preventPoiUpdated = false; // CraftBukkit - SPIGOT-5710 public boolean captureBlockStates = false; diff --git a/src/main/java/net/minecraft/world/level/entity/EntityLookup.java b/src/main/java/net/minecraft/world/level/entity/EntityLookup.java index 21a2800db22f287b9c6a8290326fdf3b94ae94b1..d45d832232be5017dde53816191c2b1830a0da32 100644 --- a/src/main/java/net/minecraft/world/level/entity/EntityLookup.java +++ b/src/main/java/net/minecraft/world/level/entity/EntityLookup.java @@ -34,6 +34,26 @@ public class EntityLookup { UUID uUID = entity.getUUID(); if (this.byUuid.containsKey(uUID)) { LOGGER.warn("Duplicate entity UUID {}: {}", uUID, entity); + // Paper start - extra debug info + if (entity instanceof net.minecraft.world.entity.Entity entityCast) { + if (net.minecraft.server.level.ServerLevel.DEBUG_ENTITIES) { + entityCast.addedToWorldStack = net.minecraft.server.level.ServerLevel.getAddToWorldStackTrace(entityCast); + } + + T old = this.byUuid.get(entity.getUUID()); + if (old instanceof net.minecraft.world.entity.Entity oldCast && old != null && oldCast.getId() != entity.getId() && oldCast.valid) { + LOGGER.error("Overwrote an existing entity " + oldCast + " with " + entity); + if (net.minecraft.server.level.ServerLevel.DEBUG_ENTITIES) { + if (oldCast.addedToWorldStack != null) { + oldCast.addedToWorldStack.printStackTrace(); + } else { + LOGGER.error("Oddly, the old entity was not added to the world in the normal way. Plugins?"); + } + entityCast.addedToWorldStack.printStackTrace(); + } + } + } + // Paper end } else { this.byUuid.put(uUID, entity); this.byId.put(entity.getId(), entity);