--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/jfr/leakprofiler/chains/edge.hpp	Tue May 15 20:24:34 2018 +0200
@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 2014, 2018, 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
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#ifndef SHARE_VM_JFR_LEAKPROFILER_CHAINS_EDGE_HPP
+#define SHARE_VM_JFR_LEAKPROFILER_CHAINS_EDGE_HPP
+
+#include "memory/allocation.hpp"
+#include "oops/oopsHierarchy.hpp"
+
+class Edge {
+ private:
+  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_VM_JFR_LEAKPROFILER_CHAINS_EDGE_HPP