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Paper/Spigot-Server-Patches/0436-Delay-unsafe-actions-until-after-entity-ticking-is-d.patch
2020-11-09 00:09:37 +00:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Sat, 11 Apr 2020 21:23:42 -0400
Subject: [PATCH] Delay unsafe actions until after entity ticking is done
This will help prevent many cases of unregistering entities during entity ticking
diff --git a/src/main/java/net/minecraft/server/WorldServer.java b/src/main/java/net/minecraft/server/WorldServer.java
index 7d0fddfc702ec0f0928404af1af96a21b5809be1..977a48bdd81d18992cacbd0ce6be2418fa9a103f 100644
--- a/src/main/java/net/minecraft/server/WorldServer.java
+++ b/src/main/java/net/minecraft/server/WorldServer.java
@@ -66,6 +66,16 @@ public class WorldServer extends World implements GeneratorAccessSeed {
public final List<EntityPlayer> players = Lists.newArrayList(); // Paper - private -> public
public final ChunkProviderServer chunkProvider; // Paper - public
boolean tickingEntities;
+ // Paper start
+ List<java.lang.Runnable> afterEntityTickingTasks = Lists.newArrayList();
+ public void doIfNotEntityTicking(java.lang.Runnable run) {
+ if (tickingEntities) {
+ afterEntityTickingTasks.add(run);
+ } else {
+ run.run();
+ }
+ }
+ // Paper end
private final MinecraftServer server;
public final WorldDataServer worldDataServer; // CraftBukkit - type
public boolean savingDisabled;
@@ -533,6 +543,16 @@ public class WorldServer extends World implements GeneratorAccessSeed {
timings.entityTick.stopTiming(); // Spigot
this.tickingEntities = false;
+ // Paper start
+ for (java.lang.Runnable run : this.afterEntityTickingTasks) {
+ try {
+ run.run();
+ } catch (Exception e) {
+ LOGGER.error("Error in After Entity Ticking Task", e);
+ }
+ }
+ this.afterEntityTickingTasks.clear();
+ // Paper end
this.getMinecraftServer().midTickLoadChunks(); // Paper
Entity entity2;