1 files changed, 10 insertions, 0 deletions
diff --git a/src/jdk/nashorn/internal/runtime/PropertyListenerManager.java b/src/jdk/nashorn/internal/runtime/PropertyListenerManager.java
index 34db0cb3..1ce18b63 100644
--- a/src/jdk/nashorn/internal/runtime/PropertyListenerManager.java
+++ b/src/jdk/nashorn/internal/runtime/PropertyListenerManager.java
@@ -41,6 +41,7 @@ public class PropertyListenerManager implements PropertyListener {
     private static int listenersRemoved;
 
     /**
+     * Return aggregate listeners added to all PropertyListenerManagers
      * @return the listenersAdded
      */
     public static int getListenersAdded() {
@@ -48,12 +49,21 @@ public class PropertyListenerManager implements PropertyListener {
     }
 
     /**
+     * Return aggregate listeners removed from all PropertyListenerManagers
      * @return the listenersRemoved
      */
     public static int getListenersRemoved() {
         return listenersRemoved;
     }
 
+    /**
+     * Return listeners added to this PropertyListenerManager.
+     * @return the listener count
+     */
+    public final int getListenerCount() {
+        return listeners != null? listeners.size() : 0;
+    }
+
     // Property listener management methods
 
     /**