17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #ifndef SHARE_VM_JFR_LEAKPROFILER_CHAINS_DFSCLOSURE_HPP
  26 #define SHARE_VM_JFR_LEAKPROFILER_CHAINS_DFSCLOSURE_HPP
  27 
  28 #include "memory/iterator.hpp"
  29 #include "oops/oop.hpp"
  30 
  31 class BitSet;
  32 class Edge;
  33 class EdgeStore;
  34 class EdgeQueue;
  35 
  36 // Class responsible for iterating the heap depth-first
  37 class DFSClosure: public ExtendedOopClosure {
  38  private:
  39   static EdgeStore* _edge_store;
  40   static BitSet*    _mark_bits;
  41   static const Edge*_start_edge;
  42   static size_t _max_depth;
  43   static bool _ignore_root_set;
  44   DFSClosure* _parent;
  45   const oop* _reference;
  46   size_t _depth;
  47 
  48   void add_chain();
  49   void closure_impl(const oop* reference, const oop pointee);
  50 
  51   DFSClosure* parent() const { return _parent; }
  52   const oop* reference() const { return _reference; }
  53 
  54   DFSClosure(DFSClosure* parent, size_t depth);
  55   DFSClosure();
  56 
  57  public:

  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #ifndef SHARE_VM_JFR_LEAKPROFILER_CHAINS_DFSCLOSURE_HPP
  26 #define SHARE_VM_JFR_LEAKPROFILER_CHAINS_DFSCLOSURE_HPP
  27 
  28 #include "memory/iterator.hpp"
  29 #include "oops/oop.hpp"
  30 
  31 class BitSet;
  32 class Edge;
  33 class EdgeStore;
  34 class EdgeQueue;
  35 
  36 // Class responsible for iterating the heap depth-first
  37 class DFSClosure: public BasicOopIterateClosure {
  38  private:
  39   static EdgeStore* _edge_store;
  40   static BitSet*    _mark_bits;
  41   static const Edge*_start_edge;
  42   static size_t _max_depth;
  43   static bool _ignore_root_set;
  44   DFSClosure* _parent;
  45   const oop* _reference;
  46   size_t _depth;
  47 
  48   void add_chain();
  49   void closure_impl(const oop* reference, const oop pointee);
  50 
  51   DFSClosure* parent() const { return _parent; }
  52   const oop* reference() const { return _reference; }
  53 
  54   DFSClosure(DFSClosure* parent, size_t depth);
  55   DFSClosure();
  56 
  57  public: