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.
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#ifndef SHARE_GC_Z_ZRELOCATIONSET_INLINE_HPP
25#define SHARE_GC_Z_ZRELOCATIONSET_INLINE_HPP
26
27#include "gc/z/zRelocationSet.hpp"
28#include "runtime/atomic.hpp"
29
30template <bool parallel>
31inline ZRelocationSetIteratorImpl<parallel>::ZRelocationSetIteratorImpl(ZRelocationSet* relocation_set) :
32 _relocation_set(relocation_set),
33 _next(0) {}
34
35template <bool parallel>
36inline bool ZRelocationSetIteratorImpl<parallel>::next(ZForwarding** forwarding) {
37 const size_t nforwardings = _relocation_set->_nforwardings;
38
39 if (parallel) {
40 if (_next < nforwardings) {
41 const size_t next = Atomic::add(1u, &_next) - 1u;
42 if (next < nforwardings) {
43 *forwarding = _relocation_set->_forwardings[next];
44 return true;
45 }
46 }
47 } else {
48 if (_next < nforwardings) {
49 *forwarding = _relocation_set->_forwardings[_next++];
50 return true;
51 }
52 }
53
54 return false;
55}
56
57#endif // SHARE_GC_Z_ZRELOCATIONSET_INLINE_HPP
58