55         }
  56     }
  57 
  58     // Method below is called by VM and VM expect certain
  59     // entry class layout.
  60 
  61     static Entry[] getFinalizerHistogram() {
  62         Map<String, Entry> countMap = new HashMap<>();
  63         ReferenceQueue<Object> queue = Finalizer.getQueue();
  64         queue.forEach(r -> {
  65             Object referent = r.get();
  66             if (referent != null) {
  67                 countMap.computeIfAbsent(
  68                     referent.getClass().getName(), Entry::new).increment();
  69                 /* Clear stack slot containing this variable, to decrease
  70                    the chances of false retention with a conservative GC */
  71                 referent = null;
  72             }
  73         });
  74 
  75         Entry fhe[] = countMap.values().toArray(new Entry[countMap.size()]);
  76         Arrays.sort(fhe,
  77                 Comparator.comparingInt(Entry::getInstanceCount).reversed());
  78         return fhe;
  79     }
  80 }

  55         }
  56     }
  57 
  58     // Method below is called by VM and VM expect certain
  59     // entry class layout.
  60 
  61     static Entry[] getFinalizerHistogram() {
  62         Map<String, Entry> countMap = new HashMap<>();
  63         ReferenceQueue<Object> queue = Finalizer.getQueue();
  64         queue.forEach(r -> {
  65             Object referent = r.get();
  66             if (referent != null) {
  67                 countMap.computeIfAbsent(
  68                     referent.getClass().getName(), Entry::new).increment();
  69                 /* Clear stack slot containing this variable, to decrease
  70                    the chances of false retention with a conservative GC */
  71                 referent = null;
  72             }
  73         });
  74 
  75         Entry[] fhe = countMap.values().toArray(new Entry[countMap.size()]);
  76         Arrays.sort(fhe,
  77                 Comparator.comparingInt(Entry::getInstanceCount).reversed());
  78         return fhe;
  79     }
  80 }