src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/tools/HeapSummary.java

rev 50281 : 8195097: Make it possible to process StringTable outside safepoint
Reviewed-by:

*** 127,137 ****
        } else {
           throw new RuntimeException("unknown CollectedHeap type : " + heap.getClass());
        }
  
        System.out.println();
-       printInternStringStatistics();
     }
  
     // Helper methods
  
     private void printGCAlgorithm(Map flagMap) {
--- 127,136 ----
*** 256,298 ****
           }
        } else {
           return -1;
        }
     }
- 
-    private void printInternStringStatistics() {
-       class StringStat implements StringTable.StringVisitor {
-          private int count;
-          private long size;
-          private OopField stringValueField;
- 
-          StringStat() {
-             VM vm = VM.getVM();
-             SystemDictionary sysDict = vm.getSystemDictionary();
-             InstanceKlass strKlass = sysDict.getStringKlass();
-             // String has a field named 'value' of type 'byte[]'.
-             stringValueField = (OopField) strKlass.findField("value", "[B");
-          }
- 
-          private long stringSize(Instance instance) {
-             // We include String content in size calculation.
-             return instance.getObjectSize() +
-                    stringValueField.getValue(instance).getObjectSize();
-          }
- 
-          public void visit(Instance str) {
-             count++;
-             size += stringSize(str);
-          }
- 
-          public void print() {
-             System.out.println(count +
-                   " interned Strings occupying " + size + " bytes.");
-          }
-       }
- 
-       StringStat stat = new StringStat();
-       StringTable strTable = VM.getVM().getStringTable();
-       strTable.stringsDo(stat);
-       stat.print();
-    }
  }
--- 255,260 ----