1/*
2 * Copyright (c) 2018, 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.
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
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23 */
24
25#ifndef SHARE_GC_SHARED_GCBEHAVIOURS_HPP
26#define SHARE_GC_SHARED_GCBEHAVIOURS_HPP
27
28#include "memory/iterator.hpp"
29#include "oops/oopsHierarchy.hpp"
30
31// This is the behaviour for checking if a CompiledMethod is unloading
32// or has unloaded due to having phantomly dead oops in it after a GC.
33class IsUnloadingBehaviour {
34 static IsUnloadingBehaviour* _current;
35
36public:
37 virtual bool is_unloading(CompiledMethod* cm) const = 0;
38 static IsUnloadingBehaviour* current() { return _current; }
39 static void set_current(IsUnloadingBehaviour* current) { _current = current; }
40};
41
42class ClosureIsUnloadingBehaviour: public IsUnloadingBehaviour {
43 BoolObjectClosure *const _cl;
44
45public:
46 ClosureIsUnloadingBehaviour(BoolObjectClosure* is_alive)
47 : _cl(is_alive)
48 { }
49
50 virtual bool is_unloading(CompiledMethod* cm) const;
51};
52
53#endif // SHARE_GC_SHARED_GCBEHAVIOURS_HPP
54