1/*
2 * Copyright (c) 2016, 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
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23 */
24
25#ifndef SHARE_JFR_WRITERS_JFRPOSITION_HPP
26#define SHARE_JFR_WRITERS_JFRPOSITION_HPP
27
28#include "utilities/debug.hpp"
29#include "utilities/globalDefinitions.hpp"
30
31template <typename AP> // AllocationPolicy
32class Position : public AP {
33 private:
34 const u1* _start_pos; // logical start
35 u1* _current_pos;
36 const u1* _end_pos;
37
38 protected:
39 const u1* start_pos() const;
40 void set_start_pos(const u1* position);
41 u1* current_pos();
42 void set_current_pos(const u1* new_position);
43 void set_current_pos(size_t size);
44 const u1* end_pos() const;
45 void set_end_pos(const u1* position);
46 Position(const u1* start_pos, size_t size);
47 Position();
48
49 public:
50 size_t available_size() const;
51 int64_t used_offset() const;
52 int64_t current_offset() const;
53 size_t used_size() const;
54 void reset();
55};
56
57#endif // SHARE_JFR_WRITERS_JFRPOSITION_HPP
58