1/*
2 * Copyright (c) 2017, 2018, 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
25#include "precompiled.hpp"
26#include "jfr/recorder/checkpoint/jfrCheckpointBlob.hpp"
27#include "jfr/recorder/checkpoint/jfrCheckpointWriter.hpp"
28
29JfrCheckpointBlob::JfrCheckpointBlob(const u1* checkpoint, size_t size) :
30 _checkpoint(JfrCHeapObj::new_array<u1>(size)),
31 _size(size),
32 _next(),
33 _written(false) {
34 assert(checkpoint != NULL, "invariant");
35 assert(_checkpoint != NULL, "invariant");
36 memcpy(const_cast<u1*>(_checkpoint), checkpoint, size);
37}
38
39JfrCheckpointBlob::~JfrCheckpointBlob() {
40 JfrCHeapObj::free(const_cast<u1*>(_checkpoint), _size);
41}
42
43const JfrCheckpointBlobHandle& JfrCheckpointBlob::next() const {
44 return _next;
45}
46
47void JfrCheckpointBlob::write_this(JfrCheckpointWriter& writer) const {
48 writer.bytes(_checkpoint, _size);
49}
50
51void JfrCheckpointBlob::exclusive_write(JfrCheckpointWriter& writer) const {
52 if (!_written) {
53 write_this(writer);
54 _written = true;
55 }
56 if (_next.valid()) {
57 _next->exclusive_write(writer);
58 }
59}
60
61void JfrCheckpointBlob::write(JfrCheckpointWriter& writer) const {
62 write_this(writer);
63 if (_next.valid()) {
64 _next->write(writer);
65 }
66}
67
68void JfrCheckpointBlob::reset_write_state() const {
69 if (_written) {
70 _written = false;
71 }
72 if (_next.valid()) {
73 _next->reset_write_state();
74 }
75}
76
77void JfrCheckpointBlob::set_next(const JfrCheckpointBlobHandle& ref) {
78 if (_next == ref) {
79 return;
80 }
81 assert(_next != ref, "invariant");
82 if (_next.valid()) {
83 _next->set_next(ref);
84 return;
85 }
86 _next = ref;
87}
88
89JfrCheckpointBlobHandle JfrCheckpointBlob::make(const u1* checkpoint, size_t size) {
90 const JfrCheckpointBlob* cp_blob = new JfrCheckpointBlob(checkpoint, size);
91 assert(cp_blob != NULL, "invariant");
92 return JfrCheckpointBlobReference::make(cp_blob);
93}
94