src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/oops/Klass.java

*** 1,7 ****
  /*
!  * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
--- 1,7 ----
  /*
!  * Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
*** 59,78 ****
--- 59,80 ----
        traceIDField  = type.getField("_trace_id");
      } catch(Exception e) {
      }
      subklass     = new MetadataField(type.getAddressField("_subklass"), 0);
      nextSibling  = new MetadataField(type.getAddressField("_next_sibling"), 0);
+     vtableLen    = new CIntField(type.getCIntegerField("_vtable_len"), 0);
  
      LH_INSTANCE_SLOW_PATH_BIT  = db.lookupIntConstant("Klass::_lh_instance_slow_path_bit").intValue();
      LH_LOG2_ELEMENT_SIZE_SHIFT = db.lookupIntConstant("Klass::_lh_log2_element_size_shift").intValue();
      LH_ELEMENT_TYPE_SHIFT      = db.lookupIntConstant("Klass::_lh_element_type_shift").intValue();
      LH_HEADER_SIZE_SHIFT       = db.lookupIntConstant("Klass::_lh_header_size_shift").intValue();
      LH_ARRAY_TAG_SHIFT         = db.lookupIntConstant("Klass::_lh_array_tag_shift").intValue();
      LH_ARRAY_TAG_TYPE_VALUE    = db.lookupIntConstant("Klass::_lh_array_tag_type_value").intValue();
      LH_ARRAY_TAG_OBJ_VALUE     = db.lookupIntConstant("Klass::_lh_array_tag_obj_value").intValue();
    }
  
+ 
    public Klass(Address addr) {
      super(addr);
    }
  
    // jvmdi support - see also class_status in VM code
*** 89,98 ****
--- 91,101 ----
    private static AddressField  name;
    private static CIntField accessFlags;
    private static MetadataField  subklass;
    private static MetadataField  nextSibling;
    private static sun.jvm.hotspot.types.Field traceIDField;
+   private static CIntField vtableLen;
  
    private Address getValue(AddressField field) {
      return addr.getAddressAt(field.getOffset());
    }
  
*** 109,118 ****
--- 112,122 ----
    public long     getAccessFlags()      { return            accessFlags.getValue(this);  }
    // Convenience routine
    public AccessFlags getAccessFlagsObj(){ return new AccessFlags(getAccessFlags());      }
    public Klass    getSubklassKlass()    { return (Klass)    subklass.getValue(this);     }
    public Klass    getNextSiblingKlass() { return (Klass)    nextSibling.getValue(this);  }
+   public long     getVtableLen()        { return            vtableLen.getValue(this); }
  
    public long traceID() {
      if (traceIDField == null) return 0;
      return traceIDField.getJLong(addr);
    }
*** 177,186 ****
--- 181,191 ----
        visitor.doInt(layoutHelper, true);
        // visitor.doOop(name, true);
        visitor.doCInt(accessFlags, true);
      visitor.doMetadata(subklass, true);
      visitor.doMetadata(nextSibling, true);
+     visitor.doCInt(vtableLen, true);
      }
  
    public long getObjectSize() {
      throw new RuntimeException("should not reach here");
    }