/*

 * Copyright (c) 2017, 2019, 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.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 *

 */

#include "precompiled.hpp"

#include "jfr/utilities/jfrBlob.hpp"

JfrBlob::JfrBlob(const u1* checkpoint, size_t size) :

  _data(JfrCHeapObj::new_array<u1>(size)),

  _next(),

  _size(size),

  _written(false) {

  assert(_data != NULL, "invariant");

  memcpy(const_cast<u1*>(_data), checkpoint, size);

}

JfrBlob::~JfrBlob() {

  JfrCHeapObj::free(const_cast<u1*>(_data), _size);

}

void JfrBlob::reset_write_state() const {

  if (!_written) {

    return;

  }

  _written = false;

  if (_next.valid()) {

    _next->reset_write_state();

  }

}

void JfrBlob::set_next(const JfrBlobHandle& ref) {

  if (_next == ref) {

    return;

  }

  assert(_next != ref, "invariant");

  if (_next.valid()) {

    _next->set_next(ref);

    return;

  }

  _next = ref;

}

JfrBlobHandle JfrBlob::make(const u1* data, size_t size) {

  const JfrBlob* const blob = new JfrBlob(data, size);

  assert(blob != NULL, "invariant");

  return JfrBlobReference::make(blob);

}