src/share/vm/services/memTrackWorker.hpp

rev 3953 : JDK-8005012: Add WB APIs to better support NMT testing
Summary:

@@ -105,10 +105,11 @@
 
   NOT_PRODUCT(int _sync_point_count;)
   NOT_PRODUCT(int _merge_count;)
   NOT_PRODUCT(int _last_gen_in_use;)
 
+  // how many generations are queued
   inline int generations_in_use() const {
     return (_tail >= _head ? (_tail - _head + 1) : (MAX_GENERATIONS - (_head - _tail) + 1));
   }
 };