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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23 */
24
25#ifndef SHARE_JFR_RECORDER_CHECKPOINT_JFRMETADATAEVENT_HPP
26#define SHARE_JFR_RECORDER_CHECKPOINT_JFRMETADATAEVENT_HPP
27
28#include "jni.h"
29#include "memory/allocation.hpp"
30
31class JfrChunkWriter;
32
33//
34// Metadata is continuously updated in Java as event classes are loaded / unloaded.
35// Using update(), Java stores a binary representation back to native.
36// This is for easy access on chunk finalization as well as having it readily available in the case of fatal error.
37//
38class JfrMetadataEvent : AllStatic {
39 public:
40 static void lock();
41 static void unlock();
42 static size_t write(JfrChunkWriter& writer, jlong metadata_offset);
43 static void update(jbyteArray metadata);
44};
45
46#endif // SHARE_JFR_RECORDER_CHECKPOINT_JFRMETADATAEVENT_HPP
47