1/*
2 * Copyright (c) 2014, 2019, 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.
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23 */
24
25#ifndef SHARE_JFR_LEAKPROFILER_CHAINS_EDGEUTILS_HPP
26#define SHARE_JFR_LEAKPROFILER_CHAINS_EDGEUTILS_HPP
27
28#include "memory/allocation.hpp"
29
30class Edge;
31class Symbol;
32
33class EdgeUtils : public AllStatic {
34 public:
35 static const size_t leak_context = 100;
36 static const size_t root_context = 100;
37 static const size_t max_ref_chain_depth = leak_context + root_context;
38
39 static bool is_leak_edge(const Edge& edge);
40 static const Edge* root(const Edge& edge);
41 static const Edge* ancestor(const Edge& edge, size_t distance);
42
43 static bool is_array_element(const Edge& edge);
44 static int array_index(const Edge& edge);
45 static int array_size(const Edge& edge);
46
47 static const Symbol* field_name_symbol(const Edge& edge);
48 static jshort field_modifiers(const Edge& edge);
49};
50
51#endif // SHARE_JFR_LEAKPROFILER_CHAINS_EDGEUTILS_HPP
52