test/lib/sun/hotspot/WhiteBox.java

@@ -101,10 +101,11 @@
   // Make sure class name is in the correct format
   public boolean isClassAlive(String name) {
     return isClassAlive0(name.replace('.', '/'));
   }
   private native boolean isClassAlive0(String name);
+  public  native int getSymbolRefcount(String name);
 
   private native boolean isMonitorInflated0(Object obj);
   public         boolean isMonitorInflated(Object obj) {
     Objects.requireNonNull(obj);
     return isMonitorInflated0(obj);