PaperSpigot-Parent/CraftBukkit-Patches/0005-Async-Operation-Catching.patch

From 67cddbc9856c267a110cf7531b8fde518e327613 Mon Sep 17 00:00:00 2001
From: md_5 <md_5@live.com.au>
Date: Thu, 7 Mar 2013 20:12:46 +1100
Subject: [PATCH] Async Operation Catching

Catch and throw an exception when a potentially unsafe operation occurs on a thread other than the main server thread.
---
 src/main/java/org/bukkit/craftbukkit/CraftWorld.java         | 3 +++
 src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java | 1 +
 2 files changed, 4 insertions(+)

diff --git a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
index 9343d46..b569dc4 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
@@ -232,6 +232,7 @@ public class CraftWorld implements World {
     }
 
     public boolean unloadChunkRequest(int x, int z, boolean safe) {
+        if (Thread.currentThread() != MinecraftServer.getServer().primaryThread) throw new IllegalStateException("Asynchronous chunk unload!");
         if (safe && isChunkInUse(x, z)) {
             return false;
         }
@@ -242,6 +243,7 @@ public class CraftWorld implements World {
     }
 
     public boolean unloadChunk(int x, int z, boolean save, boolean safe) {
+        if (Thread.currentThread() != MinecraftServer.getServer().primaryThread) throw new IllegalStateException("Asynchronous chunk unload!");
         if (safe && isChunkInUse(x, z)) {
             return false;
         }
@@ -309,6 +311,7 @@ public class CraftWorld implements World {
     }
 
     public boolean loadChunk(int x, int z, boolean generate) {
+        if (Thread.currentThread() != MinecraftServer.getServer().primaryThread) throw new IllegalStateException("Asynchronous chunk load!");
         chunkLoadCount++;
         if (generate) {
             // Use the default variant of loadChunk when generate == true.
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
index 70111e7..59e63ef 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -213,6 +213,7 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
     }
 
     public void kickPlayer(String message) {
+        if (Thread.currentThread() != MinecraftServer.getServer().primaryThread) throw new IllegalStateException("Asynchronous player kick!");
         if (getHandle().playerConnection == null) return;
 
         getHandle().playerConnection.disconnect(message == null ? "" : message);
-- 
1.8.1-rc2