1/*
2 * Copyright (c) 2012, 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.
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23 */
24
25#ifndef SHARE_JFR_RECORDER_STORAGE_JFRSTORAGECONTROL_HPP
26#define SHARE_JFR_RECORDER_STORAGE_JFRSTORAGECONTROL_HPP
27
28#include "jfr/utilities/jfrAllocation.hpp"
29
30class JfrStorageControl : public JfrCHeapObj {
31 private:
32 size_t _global_count_total;
33 size_t _full_count;
34 volatile size_t _global_lease_count;
35 volatile size_t _dead_count;
36 size_t _to_disk_threshold;
37 size_t _in_memory_discard_threshold;
38 size_t _global_lease_threshold;
39 size_t _scavenge_threshold;
40 bool _to_disk;
41
42 public:
43 JfrStorageControl(size_t global_count_total, size_t in_memory_discard_threshold);
44
45 void set_to_disk(bool enable);
46 bool to_disk() const;
47
48 size_t full_count() const;
49 size_t increment_full();
50 size_t decrement_full();
51 void reset_full();
52 bool should_post_buffer_full_message() const;
53 bool should_discard() const;
54
55 size_t global_lease_count() const;
56 size_t increment_leased();
57 size_t decrement_leased();
58 bool is_global_lease_allowed() const;
59
60 size_t dead_count() const;
61 size_t increment_dead();
62 size_t decrement_dead();
63
64 void set_scavenge_threshold(size_t number_of_dead_buffers);
65 bool should_scavenge() const;
66};
67
68#endif // SHARE_JFR_RECORDER_STORAGE_JFRSTORAGECONTROL_HPP
69