synchronize the listeners while clearing

NeuronRobotics · Oct 23, 2024 · 730e0f5 · 730e0f5
1 parent 4b0b1f9
commit 730e0f5
Showing 1 changed file with 8 additions and 2 deletions.
diff --git a/src/main/java/eu/mihosoft/vrl/v3d/parametrics/CSGDatabase.java b/src/main/java/eu/mihosoft/vrl/v3d/parametrics/CSGDatabase.java
@@ -53,8 +53,14 @@ public static  void addParameterListener(String key, IParameterChanged l){
 		}
 	}
 	public static  void clearParameterListeners(String key){
-		CopyOnWriteArrayList<IParameterChanged> list = getParamListeners(key);
-		list.clear();
+		synchronized (parameterListeners) {
+			CopyOnWriteArrayList<IParameterChanged> back = parameterListeners.get(key);
+			if(back==null){
+				back = new CopyOnWriteArrayList<>();
+				parameterListeners.put(key, back);
+			}
+			back.clear();
+		}
 	}
 	public static  void removeParameterListener(String key, IParameterChanged l){
 		if(parameterListeners.get(key)==null){