/*

 * Copyright (c) 2019, SAP SE. All rights reserved.

 * Copyright (c) 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 <memory/metaspace/settings.hpp>

#include "precompiled.hpp"

#include "memory/metaspace/chunkLevel.hpp"

#include "utilities/debug.hpp"

#include "utilities/globalDefinitions.hpp"

#include "utilities/ostream.hpp"

namespace metaspace {

chklvl_t chklvl::level_fitting_word_size(size_t word_size) {

  assert(chklvl::MAX_CHUNK_WORD_SIZE >= word_size,

         "too large allocation size (" SIZE_FORMAT ")", word_size * BytesPerWord);

  // TODO: This can be done much better.

  chklvl_t l = chklvl::HIGHEST_CHUNK_LEVEL;

  while (l >= chklvl::LOWEST_CHUNK_LEVEL &&

         word_size > chklvl::word_size_for_level(l)) {

    l --;

  }

  return l;

}

void chklvl::print_chunk_size(outputStream* st, chklvl_t lvl) {

  if (chklvl::is_valid_level(lvl)) {

    const size_t s = chklvl::word_size_for_level(lvl) * BytesPerWord;

    if (s < 1 * M) {

      st->print("%3uk", (unsigned)(s / K));

    } else {

      st->print("%3um", (unsigned)(s / M));

    }

  } else {

    st->print("?-?");

  }

}

} // namespace metaspace