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#ifndef SHARE_MEMORY_METASPACE_METASPACESETTINGS_HPP
#define SHARE_MEMORY_METASPACE_METASPACESETTINGS_HPP

#include "memory/allStatic.hpp"
#include "memory/metaspace/chunklevel.hpp"
#include "utilities/globalDefinitions.hpp"

namespace metaspace {

class Settings : public AllStatic {

  // Granularity, in bytes, metaspace is committed with.
  static constexpr size_t _commit_granule_bytes = 64 * K;

  // Granularity, in words, metaspace is committed with.
  static constexpr size_t _commit_granule_words = _commit_granule_bytes / BytesPerWord;

  // The default size of a VirtualSpaceNode, unless created with an explicitly specified size.
  //  Must be a multiple of the root chunk size.
  // This value only affects the process virtual size, and there only the granularity with which it
  //  increases. Matters mostly for 32bit platforms due to limited address space.
  // Note that this only affects the non-class metaspace. Class space ignores this size (it is one
  //  single large mapping).
  static const size_t _virtual_space_node_default_word_size =
      chunklevel::MAX_CHUNK_WORD_SIZE * NOT_LP64(1) LP64_ONLY(4); // 16MB (32-bit) / 64MB (64-bit)

  // Alignment of the base address of a virtual space node
  static const size_t _virtual_space_node_reserve_alignment_words = chunklevel::MAX_CHUNK_WORD_SIZE;

  // When allocating from a chunk, if the remaining area in the chunk is too small to hold
  // the requested size, we attempt to double the chunk size in place...
  static const bool _enlarge_chunks_in_place = true;

public:

  static size_t commit_granule_bytes()                        { return _commit_granule_bytes; }
  static size_t commit_granule_words()                        { return _commit_granule_words; }
  static size_t virtual_space_node_default_word_size()        { return _virtual_space_node_default_word_size; }
  static size_t virtual_space_node_reserve_alignment_words()  { return _virtual_space_node_reserve_alignment_words; }
  static bool enlarge_chunks_in_place()                       { return _enlarge_chunks_in_place; }

  static void ergo_initialize();

  static void print_on(outputStream* st);

};

} // namespace metaspace

#endif // SHARE_MEMORY_METASPACE_METASPACESETTINGS_HPP