1 /* 2 * Copyright (c) 2014, 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 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_EDGE_HPP 26 #define SHARE_VM_JFR_LEAKPROFILER_CHAINS_EDGE_HPP 27 28 #include "memory/allocation.hpp" 29 #include "oops/oopsHierarchy.hpp" 30 31 class Edge { 32 private: 33 const Edge* _parent; 34 const oop* _reference; 35 public: 36 Edge(); 37 Edge(const Edge* parent, const oop* reference); 38 39 const oop* reference() const { 40 return _reference; 41 } 42 const Edge* parent() const { 43 return _parent; 44 } 45 bool is_root() const { 46 return _parent == NULL; 47 } 48 const oop pointee() const; 49 const Klass* pointee_klass() const; 50 const oop reference_owner() const; 51 const Klass* reference_owner_klass() const; 52 size_t distance_to_root() const; 53 54 void* operator new (size_t sz, void* here) { 55 return here; 56 } 57 }; 58 59 #endif // SHARE_VM_JFR_LEAKPROFILER_CHAINS_EDGE_HPP