From 5e17df6b2ae2eb59ee4b5c727da2b324e1223959 Mon Sep 17 00:00:00 2001
From: "Lukas Rieger (Blue)" <TBlueF@users.noreply.github.com>
Date: Mon, 13 Mar 2023 19:30:31 +0100
Subject: [PATCH] Fix locking on the same lock that is used for loading causes
 the server to freeze

---
 .../java/de/bluecolored/bluemap/common/BlueMapService.java     | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/BlueMapCommon/src/main/java/de/bluecolored/bluemap/common/BlueMapService.java b/BlueMapCommon/src/main/java/de/bluecolored/bluemap/common/BlueMapService.java
index d7dfe850..3e1746c0 100644
--- a/BlueMapCommon/src/main/java/de/bluecolored/bluemap/common/BlueMapService.java
+++ b/BlueMapCommon/src/main/java/de/bluecolored/bluemap/common/BlueMapService.java
@@ -70,6 +70,7 @@
  */
 @DebugDump
 public class BlueMapService implements Closeable {
+
     private final ServerInterface serverInterface;
     private final BlueMapConfigProvider configs;
 
@@ -116,7 +117,7 @@ public String getWorldId(Path worldFolder) throws IOException {
         id = worldIds.get(worldFolder);
         if (id != null) return id;
 
-        synchronized (this) {
+        synchronized (worldIds) {
             // check again if another thread has already added the world
             id = worldIds.get(worldFolder);
             if (id != null) return id;