generationSpec.cpp revision 8413:92457dfb91bd 
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.
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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
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23 */
24
25#include "precompiled.hpp"
26#include "gc/serial/defNewGeneration.hpp"
27#include "gc/serial/tenuredGeneration.hpp"
28#include "gc/shared/genRemSet.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
39Generation* GenerationSpec::init(ReservedSpace rs, int level,
40                                 GenRemSet* remset) {
41  switch (name()) {
42    case Generation::DefNew:
43      return new DefNewGeneration(rs, init_size(), level);
44
45    case Generation::MarkSweepCompact:
46      return new TenuredGeneration(rs, init_size(), level, remset);
47
48#if INCLUDE_ALL_GCS
49    case Generation::ParNew:
50      return new ParNewGeneration(rs, init_size(), level);
51
52    case Generation::ConcurrentMarkSweep: {
53      assert(UseConcMarkSweepGC, "UseConcMarkSweepGC should be set");
54      CardTableRS* ctrs = remset->as_CardTableRS();
55      if (ctrs == NULL) {
56        vm_exit_during_initialization("Rem set incompatibility.");
57      }
58      // Otherwise
59      // The constructor creates the CMSCollector if needed,
60      // else registers with an existing CMSCollector
61
62      ConcurrentMarkSweepGeneration* g = NULL;
63      g = new ConcurrentMarkSweepGeneration(rs,
64                 init_size(), level, ctrs, UseCMSAdaptiveFreeLists,
65                 (FreeBlockDictionary<FreeChunk>::DictionaryChoice)CMSDictionaryChoice);
66
67      g->initialize_performance_counters();
68
69      return g;
70    }
71#endif // INCLUDE_ALL_GCS
72
73    default:
74      guarantee(false, "unrecognized GenerationName");
75      return NULL;
76  }
77}
78