Paper/patches/server/0828-Throw-exception-on-world-create-while-being-ticked.patch

79 lines
4.2 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Tue, 22 Mar 2022 12:44:30 -0700
Subject: [PATCH] Throw exception on world create while being ticked
There are no plans to support creating worlds while worlds are
being ticked themselvess.
diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index e52936ce703b9c95f85a41b90fb3cb3df8a04fce..dbeede822e4534b487d30772280eaac1d5c966f9 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -310,6 +310,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
public volatile Thread shutdownThread; // Paper
public volatile boolean abnormalExit = false; // Paper
+ public boolean isIteratingOverLevels = false; // Paper
public static <S extends MinecraftServer> S spin(Function<Thread, S> serverFactory) {
AtomicReference<S> atomicreference = new AtomicReference();
@@ -1483,7 +1484,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
this.getFunctions().tick();
MinecraftTimings.commandFunctionsTimer.stopTiming(); // Spigot // Paper
this.profiler.popPush("levels");
- Iterator iterator = this.getAllLevels().iterator();
+ //Iterator iterator = this.getAllLevels().iterator(); // Paper - moved down
// CraftBukkit start
// Run tasks that are waiting on processing
@@ -1515,6 +1516,8 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
// Paper end
MinecraftTimings.timeUpdateTimer.stopTiming(); // Spigot // Paper
+ this.isIteratingOverLevels = true; // Paper
+ Iterator iterator = this.getAllLevels().iterator(); // Paper - move down
while (iterator.hasNext()) {
ServerLevel worldserver = (ServerLevel) iterator.next();
worldserver.hasPhysicsEvent = org.bukkit.event.block.BlockPhysicsEvent.getHandlerList().getRegisteredListeners().length > 0; // Paper
@@ -1561,6 +1564,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
this.profiler.pop();
worldserver.explosionDensityCache.clear(); // Paper - Optimize explosions
}
+ this.isIteratingOverLevels = false; // Paper
this.profiler.popPush("connection");
MinecraftTimings.connectionTimer.startTiming(); // Spigot
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
index 2282d0ae19c3428a32d4645caaa2d543cbd866fb..48130600572c216f071893e2925dd1758e143751 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
@@ -872,6 +872,11 @@ public final class CraftServer implements Server {
return new ArrayList<World>(this.worlds.values());
}
+ @Override
+ public boolean isTickingWorlds() {
+ return console.isIteratingOverLevels;
+ }
+
public DedicatedPlayerList getHandle() {
return this.playerList;
}
@@ -1153,6 +1158,7 @@ public final class CraftServer implements Server {
@Override
public World createWorld(WorldCreator creator) {
Preconditions.checkState(this.console.getAllLevels().iterator().hasNext(), "Cannot create additional worlds on STARTUP");
+ //Preconditions.checkState(!this.console.isIteratingOverLevels, "Cannot create a world while worlds are being ticked"); // Paper - Cat - Temp disable. We'll see how this goes.
Preconditions.checkArgument(creator != null, "WorldCreator cannot be null");
String name = creator.name();
@@ -1292,6 +1298,7 @@ public final class CraftServer implements Server {
@Override
public boolean unloadWorld(World world, boolean save) {
+ //Preconditions.checkState(!this.console.isIteratingOverLevels, "Cannot unload a world while worlds are being ticked"); // Paper - Cat - Temp disable. We'll see how this goes.
if (world == null) {
return false;
}