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8c5b837e05
Firstly, the old methods all routed to the CompletableFuture method. However, the CF method could not guarantee that if the caller was off-main that the future would be "completed" on-main. Since the callback methods used the CF one, this meant that the callback methods did not guarantee that the callbacks were to be called on the main thread. Now, all methods route to getChunkAtAsync(x, z, gen, urgent, cb) so that the methods with the callback are guaranteed to invoke the callback on the main thread. The CF behavior remains unchanged; it may still appear to complete on main if invoked off-main. Secondly, remove the scheduleOnMain invocation in the async chunk completion. This unnecessarily delays the callback by 1 tick. Thirdly, add getChunksAtAsync(minX, minZ, maxX, maxZ, ...) which will load chunks within an area. This method is provided as a helper as keeping all chunks loaded within an area can be complicated to implement for plugins (due to the lacking ticket API), and is already implemented internally anyways. Fourthly, remove the ticket addition that occured with getChunkAt and getChunkAtAsync. The ticket addition may delay the unloading of the chunk unnecessarily. It also fixes a very rare timing bug where the future/callback would be completed after the chunk unloads.
43 lines
2.5 KiB
Diff
43 lines
2.5 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Sat, 21 Jul 2018 08:25:40 -0400
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Subject: [PATCH] Add Debug Entities option to debug dupe uuid issues
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diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
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index e03032b96e8f44ef83f52dcf3dc5a8856281e475..01c4f405692116813bbd3d851738f52a50b548a2 100644
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--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
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+++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
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@@ -1171,6 +1171,12 @@ public class ServerLevel extends Level implements ServerEntityGetter, WorldGenLe
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// CraftBukkit start
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private boolean addEntity(Entity entity, CreatureSpawnEvent.SpawnReason spawnReason) {
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org.spigotmc.AsyncCatcher.catchOp("entity add"); // Spigot
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+ // Paper start - extra debug info
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+ if (entity.valid) {
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+ MinecraftServer.LOGGER.error("Attempted Double World add on {}", entity, new Throwable());
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+ return true;
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+ }
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+ // Paper end - extra debug info
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if (entity.isRemoved()) {
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// WorldServer.LOGGER.warn("Tried to add entity {} but it was marked as removed already", EntityTypes.getKey(entity.getType())); // CraftBukkit
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return false;
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diff --git a/src/main/java/net/minecraft/world/level/entity/EntityLookup.java b/src/main/java/net/minecraft/world/level/entity/EntityLookup.java
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index 38df704dca30ef08f4d0831dc1cc48c6d6f71a4d..ed6aea7a38ef6e80c300ff9b012dcdbc390ad2c7 100644
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--- a/src/main/java/net/minecraft/world/level/entity/EntityLookup.java
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+++ b/src/main/java/net/minecraft/world/level/entity/EntityLookup.java
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@@ -33,6 +33,14 @@ public class EntityLookup<T extends EntityAccess> {
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UUID uUID = entity.getUUID();
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if (this.byUuid.containsKey(uUID)) {
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LOGGER.warn("Duplicate entity UUID {}: {}", uUID, entity);
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+ // Paper start - extra debug info
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+ if (entity instanceof net.minecraft.world.entity.Entity) {
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+ final T old = this.byUuid.get(entity.getUUID());
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+ if (old instanceof net.minecraft.world.entity.Entity oldCast && oldCast.getId() != entity.getId() && oldCast.valid) {
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+ LOGGER.error("Overwrote an existing entity {} with {}", oldCast, entity);
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+ }
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+ }
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+ // Paper end - extra debug info
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} else {
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this.byUuid.put(uUID, entity);
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this.byId.put(entity.getId(), entity);
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