| /* |
| * 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_DFSCLOSURE_HPP |
| #define SHARE_VM_JFR_LEAKPROFILER_CHAINS_DFSCLOSURE_HPP |
| |
| #include "memory/iterator.hpp" |
| #include "oops/oop.hpp" |
| |
| class BitSet; |
| class Edge; |
| class EdgeStore; |
| class EdgeQueue; |
| |
| // Class responsible for iterating the heap depth-first |
| class DFSClosure: public ExtendedOopClosure { |
| private: |
| static EdgeStore* _edge_store; |
| static BitSet* _mark_bits; |
| static const Edge*_start_edge; |
| static size_t _max_depth; |
| static bool _ignore_root_set; |
| DFSClosure* _parent; |
| const oop* _reference; |
| size_t _depth; |
| |
| void add_chain(); |
| void closure_impl(const oop* reference, const oop pointee); |
| |
| DFSClosure* parent() const { return _parent; } |
| const oop* reference() const { return _reference; } |
| |
| DFSClosure(DFSClosure* parent, size_t depth); |
| DFSClosure(); |
| |
| public: |
| static void find_leaks_from_edge(EdgeStore* edge_store, BitSet* mark_bits, const Edge* start_edge); |
| static void find_leaks_from_root_set(EdgeStore* edge_store, BitSet* mark_bits); |
| |
| virtual void do_oop(oop* ref); |
| virtual void do_oop(narrowOop* ref); |
| }; |
| |
| #endif // SHARE_VM_JFR_LEAKPROFILER_CHAINS_DFSCLOSURE_HPP |