alvinalexander.com | career | drupal | java | mac | mysql | perl | scala | uml | unix  

Java example source code file (generationSpec.cpp)

This example Java source code file (generationSpec.cpp) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

asconcurrentmarksweepgeneration, cardtablers, freeblockdictionary, generation\:\:asconcurrentmarksweep, generation\:\:concurrentmarksweep, generation\:\:parnew, generationname, generationspec\:\:init, include_all_gcs, null, rem, tenuredgeneration, usecmsadaptivefreelists, useconcmarksweepgc

The generationSpec.cpp Java example source code

/*
 * Copyright (c) 2001, 2013, 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 "memory/binaryTreeDictionary.hpp"
#include "memory/defNewGeneration.hpp"
#include "memory/filemap.hpp"
#include "memory/genRemSet.hpp"
#include "memory/generationSpec.hpp"
#include "memory/tenuredGeneration.hpp"
#include "runtime/java.hpp"
#include "utilities/macros.hpp"
#if INCLUDE_ALL_GCS
#include "gc_implementation/parNew/asParNewGeneration.hpp"
#include "gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.hpp"
#include "gc_implementation/parNew/parNewGeneration.hpp"
#endif // INCLUDE_ALL_GCS

Generation* GenerationSpec::init(ReservedSpace rs, int level,
                                 GenRemSet* remset) {
  switch (name()) {
    case Generation::DefNew:
      return new DefNewGeneration(rs, init_size(), level);

    case Generation::MarkSweepCompact:
      return new TenuredGeneration(rs, init_size(), level, remset);

#if INCLUDE_ALL_GCS
    case Generation::ParNew:
      return new ParNewGeneration(rs, init_size(), level);

    case Generation::ASParNew:
      return new ASParNewGeneration(rs,
                                    init_size(),
                                    init_size() /* min size */,
                                    level);

    case Generation::ConcurrentMarkSweep: {
      assert(UseConcMarkSweepGC, "UseConcMarkSweepGC should be set");
      CardTableRS* ctrs = remset->as_CardTableRS();
      if (ctrs == 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(), level, ctrs, UseCMSAdaptiveFreeLists,
                 (FreeBlockDictionary<FreeChunk>::DictionaryChoice)CMSDictionaryChoice);

      g->initialize_performance_counters();

      return g;
    }

    case Generation::ASConcurrentMarkSweep: {
      assert(UseConcMarkSweepGC, "UseConcMarkSweepGC should be set");
      CardTableRS* ctrs = remset->as_CardTableRS();
      if (ctrs == NULL) {
        vm_exit_during_initialization("Rem set incompatibility.");
      }
      // Otherwise
      // The constructor creates the CMSCollector if needed,
      // else registers with an existing CMSCollector

      ASConcurrentMarkSweepGeneration* g = NULL;
      g = new ASConcurrentMarkSweepGeneration(rs,
                 init_size(), level, ctrs, UseCMSAdaptiveFreeLists,
                 (FreeBlockDictionary<FreeChunk>::DictionaryChoice)CMSDictionaryChoice);

      g->initialize_performance_counters();

      return g;
    }
#endif // INCLUDE_ALL_GCS

    default:
      guarantee(false, "unrecognized GenerationName");
      return NULL;
  }
}

Other Java examples (source code examples)

Here is a short list of links related to this Java generationSpec.cpp source code file:

... this post is sponsored by my books ...

#1 New Release!

FP Best Seller

 

new blog posts

 

Copyright 1998-2021 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.