9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  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 { // XXX 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:
  58   static void find_leaks_from_edge(EdgeStore* edge_store, BitSet* mark_bits, const Edge* start_edge);
  59   static void find_leaks_from_root_set(EdgeStore* edge_store, BitSet* mark_bits);

  60 
  61   virtual void do_oop(oop* ref);
  62   virtual void do_oop(narrowOop* ref);
  63 };
  64 
  65 #endif // SHARE_VM_JFR_LEAKPROFILER_CHAINS_DFSCLOSURE_HPP

   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  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 
  30 class BitSet;
  31 class Edge;
  32 class EdgeStore;
  33 class EdgeQueue;
  34 
  35 // Class responsible for iterating the heap depth-first
  36 class DFSClosure : public ExtendedOopClosure { // XXX BasicOopIterateClosure
  37  private:
  38   static EdgeStore* _edge_store;
  39   static BitSet*    _mark_bits;
  40   static const Edge*_start_edge;
  41   static size_t _max_depth;
  42   static bool _ignore_root_set;
  43   DFSClosure* _parent;
  44   const oop* _reference;
  45   size_t _depth;
  46 
  47   void add_chain();
  48   void closure_impl(const oop* reference, const oop pointee);
  49 
  50   DFSClosure* parent() const { return _parent; }
  51   const oop* reference() const { return _reference; }
  52 
  53   DFSClosure(DFSClosure* parent, size_t depth);
  54   DFSClosure();
  55 
  56  public:
  57   static void find_leaks_from_edge(EdgeStore* edge_store, BitSet* mark_bits, const Edge* start_edge);
  58   static void find_leaks_from_root_set(EdgeStore* edge_store, BitSet* mark_bits);
  59   void do_root(const oop* ref);
  60 
  61   virtual void do_oop(oop* ref);
  62   virtual void do_oop(narrowOop* ref);
  63 };
  64 
  65 #endif // SHARE_VM_JFR_LEAKPROFILER_CHAINS_DFSCLOSURE_HPP