/*

 * Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

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 */

#ifndef SHARE_VM_JFR_RECORDER_CHECKPOINT_JFRMETADATAEVENT_HPP

#define SHARE_VM_JFR_RECORDER_CHECKPOINT_JFRMETADATAEVENT_HPP

#include "jni.h"

#include "memory/allocation.hpp"

class JfrChunkWriter;

//

// Metadata is continuously updated in Java as event classes are loaded / unloaded.

// Using update(), Java stores a binary representation back to native.

// This is for easy access on chunk finalization as well as having it readily available in the case of fatal error.

//

class JfrMetadataEvent : AllStatic {

 public:

  static void lock();

  static void unlock();

  static size_t write(JfrChunkWriter& writer, jlong metadata_offset);

  static void update(jbyteArray metadata);

};

#endif // SHARE_VM_JFR_RECORDER_CHECKPOINT_JFRMETADATAEVENT_HPP