/*

 * Copyright (c) 2018, 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

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 * questions.

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 */

#ifndef SHARE_CLASSFILE_CLASSLOADERDATAGRAPH_INLINE_HPP

#define SHARE_CLASSFILE_CLASSLOADERDATAGRAPH_INLINE_HPP

#include "classfile/classLoaderDataGraph.hpp"

#include "classfile/javaClasses.hpp"

#include "oops/oop.inline.hpp"

#include "runtime/atomic.hpp"

inline ClassLoaderData *ClassLoaderDataGraph::find_or_create(Handle loader) {

  guarantee(loader() != NULL && oopDesc::is_oop(loader()), "Loader must be oop");

  // Gets the class loader data out of the java/lang/ClassLoader object, if non-null

  // it's already in the loader_data, so no need to add

  ClassLoaderData* loader_data = java_lang_ClassLoader::loader_data_acquire(loader());

  if (loader_data) {

     return loader_data;

  }

  return ClassLoaderDataGraph::add(loader, false);

}

size_t ClassLoaderDataGraph::num_instance_classes() {

  return _num_instance_classes;

}

size_t ClassLoaderDataGraph::num_array_classes() {

  return _num_array_classes;

}

void ClassLoaderDataGraph::inc_instance_classes(size_t count) {

  Atomic::add(count, &_num_instance_classes);

}

void ClassLoaderDataGraph::dec_instance_classes(size_t count) {

  assert(count <= _num_instance_classes, "Sanity");

  Atomic::sub(count, &_num_instance_classes);

}

void ClassLoaderDataGraph::inc_array_classes(size_t count) {

  Atomic::add(count, &_num_array_classes);

}

void ClassLoaderDataGraph::dec_array_classes(size_t count) {

  assert(count <= _num_array_classes, "Sanity");

  Atomic::sub(count, &_num_array_classes);

}

bool ClassLoaderDataGraph::should_clean_metaspaces_and_reset() {

  // Only clean metaspaces after full GC.

  bool do_cleaning = _safepoint_cleanup_needed;

#if INCLUDE_JVMTI

  do_cleaning = do_cleaning && (_should_clean_deallocate_lists || InstanceKlass::has_previous_versions());

#else

  do_cleaning = do_cleaning && _should_clean_deallocate_lists;

#endif

  _safepoint_cleanup_needed = false;  // reset

  return do_cleaning;

}

#endif // SHARE_CLASSFILE_CLASSLOADERDATAGRAPH_INLINE_HPP