/*

 * Copyright (c) 2014, 2019, 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.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 */

#ifndef SHARE_JFR_LEAKPROFILER_CHAINS_EDGE_HPP

#define SHARE_JFR_LEAKPROFILER_CHAINS_EDGE_HPP

#include "memory/allocation.hpp"

#include "oops/oopsHierarchy.hpp"

class Edge {

  const Edge* _parent;

  const oop* _reference;

 public:

  Edge();

  Edge(const Edge* parent, const oop* reference);

  const oop* reference() const {

    return _reference;

  }

  const Edge* parent() const {

    return _parent;

  }

  bool is_root() const {

    return _parent == NULL;

  }

  const oop pointee() const;

  const Klass* pointee_klass() const;

  const oop reference_owner() const;

  const Klass* reference_owner_klass() const;

  size_t distance_to_root() const;

  void* operator new (size_t sz, void* here) {

    return here;

  }

};

#endif // SHARE_JFR_LEAKPROFILER_CHAINS_EDGE_HPP