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Mirror von https://github.com/PaperMC/Paper.git synchronisiert 2024-11-15 12:30:06 +01:00
Paper/Spigot-API-Patches/0131-isChunkGenerated-API.patch
Aikar 5228a4f24c
Remove deadlock risk in firing async events
The PluginManager incorrectly used synchronization on firing any event
that was marked as synchronous.

This synchronized did not even protect any concurrency risk as
handlers were already thread safe in terms of mutations during event
dispatch.

The way it was used, has commonly led to deadlocks on the server,
which results in a hard crash.

This change removes the synchronize and adds some protection around enable/disable
2018-09-09 01:04:59 -04:00

70 Zeilen
2.5 KiB
Diff

From 83e63475155067753ed63d35b7e5998c75feff72 Mon Sep 17 00:00:00 2001
From: cswhite2000 <18whitechristop@gmail.com>
Date: Tue, 21 Aug 2018 19:39:46 -0700
Subject: [PATCH] isChunkGenerated API
Resolves #1329
diff --git a/src/main/java/org/bukkit/Location.java b/src/main/java/org/bukkit/Location.java
index 7e1ee875e..9457832bc 100644
--- a/src/main/java/org/bukkit/Location.java
+++ b/src/main/java/org/bukkit/Location.java
@@ -9,6 +9,7 @@ import org.bukkit.util.NumberConversions;
import org.bukkit.util.Vector;
// Paper start
+import com.google.common.base.Preconditions;
import java.util.Collection;
import java.util.function.Predicate;
import org.bukkit.entity.Entity;
@@ -502,6 +503,15 @@ public class Location implements Cloneable, ConfigurationSerializable {
public boolean isChunkLoaded() { return world.isChunkLoaded(locToBlock(x) >> 4, locToBlock(z) >> 4); } // Paper
// Paper start
+ /**
+ * Checks if a {@link Chunk} has been generated at this location.
+ *
+ * @return true if a chunk has been generated at this location
+ */
+ public boolean isGenerated() {
+ Preconditions.checkNotNull(world, "Location has no world!");
+ return world.isChunkGenerated(locToBlock(x) >> 4, locToBlock(z) >> 4);
+ }
/**
* Sets the position of this Location and returns itself
diff --git a/src/main/java/org/bukkit/World.java b/src/main/java/org/bukkit/World.java
index a6facc4b0..d50586349 100644
--- a/src/main/java/org/bukkit/World.java
+++ b/src/main/java/org/bukkit/World.java
@@ -210,6 +210,26 @@ public interface World extends PluginMessageRecipient, Metadatable {
public default Chunk getChunkAt(long chunkKey) {
return getChunkAt((int) chunkKey, (int) (chunkKey >> 32));
}
+
+ /**
+ * Checks if a {@link Chunk} has been generated at the specified chunk key,
+ * which is the X and Z packed into a long.
+ *
+ * @param chunkKey The Chunk Key to look up the chunk by
+ * @return true if the chunk has been generated, otherwise false
+ */
+ public default boolean isChunkGenerated(long chunkKey) {
+ return isChunkGenerated((int) chunkKey, (int) (chunkKey >> 32));
+ }
+
+ /**
+ * Checks if a {@link Chunk} has been generated at the given coordinates.
+ *
+ * @param x X-coordinate of the chunk
+ * @param z Z-coordinate of the chunk
+ * @return true if the chunk has been generated, otherwise false
+ */
+ public boolean isChunkGenerated(int x, int z);
// Paper end
/**
--
2.18.0