1/*
2 * Copyright (c) 2015, 2017, 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_ZARRAY_HPP
25#define SHARE_GC_Z_ZARRAY_HPP
26
27#include "memory/allocation.hpp"
28
29template <typename T>
30class ZArray {
31private:
32 static const size_t initial_capacity = 32;
33
34 T* _array;
35 size_t _size;
36 size_t _capacity;
37
38 // Copy and assignment are not allowed
39 ZArray(const ZArray<T>& array);
40 ZArray<T>& operator=(const ZArray<T>& array);
41
42 void expand(size_t new_capacity);
43
44public:
45 ZArray();
46 ~ZArray();
47
48 size_t size() const;
49 bool is_empty() const;
50
51 T at(size_t index) const;
52
53 void add(T value);
54 void transfer(ZArray<T>* from);
55 void clear();
56};
57
58template <typename T, bool parallel>
59class ZArrayIteratorImpl : public StackObj {
60private:
61 ZArray<T>* const _array;
62 size_t _next;
63
64public:
65 ZArrayIteratorImpl(ZArray<T>* array);
66
67 bool next(T* elem);
68};
69
70// Iterator types
71#define ZARRAY_SERIAL false
72#define ZARRAY_PARALLEL true
73
74template <typename T>
75class ZArrayIterator : public ZArrayIteratorImpl<T, ZARRAY_SERIAL> {
76public:
77 ZArrayIterator(ZArray<T>* array) :
78 ZArrayIteratorImpl<T, ZARRAY_SERIAL>(array) {}
79};
80
81template <typename T>
82class ZArrayParallelIterator : public ZArrayIteratorImpl<T, ZARRAY_PARALLEL> {
83public:
84 ZArrayParallelIterator(ZArray<T>* array) :
85 ZArrayIteratorImpl<T, ZARRAY_PARALLEL>(array) {}
86};
87
88#endif // SHARE_GC_Z_ZARRAY_HPP
89