1/*
2 * Copyright (c) 2017, 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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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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22 */
23
24#ifndef SHARE_GC_Z_ZRELOCATIONSET_HPP
25#define SHARE_GC_Z_ZRELOCATIONSET_HPP
26
27#include "memory/allocation.hpp"
28
29class ZForwarding;
30class ZPage;
31
32class ZRelocationSet {
33 template <bool> friend class ZRelocationSetIteratorImpl;
34
35private:
36 ZForwarding** _forwardings;
37 size_t _nforwardings;
38
39public:
40 ZRelocationSet();
41
42 void populate(ZPage* const* group0, size_t ngroup0,
43 ZPage* const* group1, size_t ngroup1);
44 void reset();
45};
46
47template <bool parallel>
48class ZRelocationSetIteratorImpl : public StackObj {
49private:
50 ZRelocationSet* const _relocation_set;
51 size_t _next;
52
53public:
54 ZRelocationSetIteratorImpl(ZRelocationSet* relocation_set);
55
56 bool next(ZForwarding** forwarding);
57};
58
59// Iterator types
60#define ZRELOCATIONSET_SERIAL false
61#define ZRELOCATIONSET_PARALLEL true
62
63class ZRelocationSetIterator : public ZRelocationSetIteratorImpl<ZRELOCATIONSET_SERIAL> {
64public:
65 ZRelocationSetIterator(ZRelocationSet* relocation_set) :
66 ZRelocationSetIteratorImpl<ZRELOCATIONSET_SERIAL>(relocation_set) {}
67};
68
69class ZRelocationSetParallelIterator : public ZRelocationSetIteratorImpl<ZRELOCATIONSET_PARALLEL> {
70public:
71 ZRelocationSetParallelIterator(ZRelocationSet* relocation_set) :
72 ZRelocationSetIteratorImpl<ZRELOCATIONSET_PARALLEL>(relocation_set) {}
73};
74
75#endif // SHARE_GC_Z_ZRELOCATIONSET_HPP
76