1 /*
   2  * Copyright (c) 2001, 2015, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #include "precompiled.hpp"
  26 #include "gc/serial/defNewGeneration.hpp"
  27 #include "gc/serial/tenuredGeneration.hpp"
  28 #include "gc/shared/cardTableRS.hpp"
  29 #include "gc/shared/generationSpec.hpp"
  30 #include "memory/binaryTreeDictionary.hpp"
  31 #include "memory/filemap.hpp"
  32 #include "runtime/java.hpp"
  33 #include "utilities/macros.hpp"
  34 #if INCLUDE_ALL_GCS
  35 #include "gc/cms/concurrentMarkSweepGeneration.hpp"
  36 #include "gc/cms/parNewGeneration.hpp"
  37 #endif // INCLUDE_ALL_GCS
  38 
  39 Generation* GenerationSpec::init(ReservedSpace rs, CardTableRS* remset) {
  40   switch (name()) {
  41     case Generation::DefNew:
  42       return new DefNewGeneration(rs, init_size());
  43 
  44     case Generation::MarkSweepCompact:
  45       return new TenuredGeneration(rs, init_size(), remset);
  46 
  47 #if INCLUDE_ALL_GCS
  48     case Generation::ParNew:
  49       return new ParNewGeneration(rs, init_size());
  50 
  51     case Generation::ConcurrentMarkSweep: {
  52       assert(UseConcMarkSweepGC, "UseConcMarkSweepGC should be set");
  53       if (remset == NULL) {
  54         vm_exit_during_initialization("Rem set incompatibility.");
  55       }
  56       // Otherwise
  57       // The constructor creates the CMSCollector if needed,
  58       // else registers with an existing CMSCollector
  59 
  60       ConcurrentMarkSweepGeneration* g = NULL;
  61       g = new ConcurrentMarkSweepGeneration(rs, init_size(), remset);
  62 
  63       g->initialize_performance_counters();
  64 
  65       return g;
  66     }
  67 #endif // INCLUDE_ALL_GCS
  68 
  69     default:
  70       guarantee(false, "unrecognized GenerationName");
  71       return NULL;
  72   }
  73 }