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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24
25#ifndef SHARE_JFR_RECORDER_CHECKPOINT_JFRCHECKPOINTBLOB_HPP
26#define SHARE_JFR_RECORDER_CHECKPOINT_JFRCHECKPOINTBLOB_HPP
27
28#include "jfr/utilities/jfrAllocation.hpp"
29#include "jfr/utilities/jfrRefCountPointer.hpp"
30
31class JfrCheckpointBlob;
32class JfrCheckpointWriter;
33
34typedef RefCountPointer<JfrCheckpointBlob, MultiThreadedRefCounter> JfrCheckpointBlobReference;
35typedef RefCountHandle<JfrCheckpointBlobReference> JfrCheckpointBlobHandle;
36
37class JfrCheckpointBlob : public JfrCHeapObj {
38 template <typename, typename>
39 friend class RefCountPointer;
40 private:
41 const u1* _checkpoint;
42 const size_t _size;
43 JfrCheckpointBlobHandle _next;
44 mutable bool _written;
45
46 JfrCheckpointBlob(const u1* checkpoint, size_t size);
47 ~JfrCheckpointBlob();
48 const JfrCheckpointBlobHandle& next() const;
49 void write_this(JfrCheckpointWriter& writer) const;
50
51 public:
52 void write(JfrCheckpointWriter& writer) const;
53 void exclusive_write(JfrCheckpointWriter& writer) const;
54 void reset_write_state() const;
55 void set_next(const JfrCheckpointBlobHandle& ref);
56 static JfrCheckpointBlobHandle make(const u1* checkpoint, size_t size);
57};
58
59#endif // SHARE_JFR_RECORDER_CHECKPOINT_JFRCHECKPOINTBLOB_HPP
60