/*

 * Copyright (c) 2001, 2015, 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 "gc/shared/cardTableRS.hpp"

#include "gc/shared/generationSpec.hpp"

#include "memory/binaryTreeDictionary.hpp"

#include "memory/filemap.hpp"

#include "runtime/java.hpp"

#include "utilities/macros.hpp"

#include "gc/cms/concurrentMarkSweepGeneration.hpp"

#include "gc/cms/parNewGeneration.hpp"

Generation* GenerationSpec::init(ReservedSpace rs, CardTableRS* remset) {

  switch (name()) {

    case Generation::DefNew:

      return new DefNewGeneration(rs, init_size());

    case Generation::MarkSweepCompact:

      return new TenuredGeneration(rs, init_size(), remset);

    case Generation::ParNew:

      return new ParNewGeneration(rs, init_size());

    case Generation::ConcurrentMarkSweep: {

      assert(UseConcMarkSweepGC, "UseConcMarkSweepGC should be set");

      if (remset == NULL) {

        vm_exit_during_initialization("Rem set incompatibility.");

      }

      // Otherwise

      // The constructor creates the CMSCollector if needed,

      // else registers with an existing CMSCollector

      ConcurrentMarkSweepGeneration* g = NULL;

      g = new ConcurrentMarkSweepGeneration(rs, init_size(), remset);

      g->initialize_performance_counters();

      return g;

    }

    default:

      guarantee(false, "unrecognized GenerationName");

      return NULL;

  }

}