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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 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_MEMORY_METASPACE_CHUNKMANAGER_HPP
#define SHARE_MEMORY_METASPACE_CHUNKMANAGER_HPP

#include "memory/allocation.hpp"
#include "memory/metaspace/metaspaceCommon.hpp"
#include "memory/metaspace/spaceManager.hpp"

namespace metaspace {


class ClassLoaderMetaspace : public CHeapObj<mtClass> {

  // The CLD lock.
  Mutex* const _lock;

  const Metaspace::MetaspaceType _space_type;

  metaspace::SpaceManager* _non_class_space_manager;
  metaspace::SpaceManager* _class_space_manager;

  Mutex* lock() const                                       { return _lock; }
  metaspace::SpaceManager* non_class_space_manager() const  { return _non_class_space_manager; }
  metaspace::SpaceManager* class_space_manager() const      { return _class_space_manager; }

  metaspace::SpaceManager* get_space_manager(bool is_class) {
    return is_class ? class_space_manager() : non_class_space_manager();
  }

public:

  ClassLoaderMetaspace(Mutex* lock, Metaspace::MetaspaceType space_type);

  ~ClassLoaderMetaspace();

  // Allocate word_size words from Metaspace.
  MetaWord* allocate(size_t word_size, bool is_class);

  // Attempt to expand the GC threshold to be good for at least another word_size words
  // and allocate. Returns NULL if failure. Used during Metaspace GC.
  MetaWord* expand_GC_threshold_and_allocate(size_t word_size, bool is_class);

  // Prematurely returns a metaspace allocation to the _block_freelists
  // because it is not needed anymore.
  void deallocate(MetaWord* ptr, size_t word_size, bool is_class);


  DEBUG_ONLY(void verify(bool slow) const;)

};

} // namespace metaspace

#endif // SHARE_MEMORY_METASPACE_CHUNKMANAGER_HPP