cmsCollectorPolicy.cpp revision 10123:f71b5a8a78b6 
1/*
2 * Copyright (c) 2007, 2016, 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/cms/cmsCollectorPolicy.hpp"
27#include "gc/cms/parNewGeneration.hpp"
28#include "gc/shared/adaptiveSizePolicy.hpp"
29#include "gc/shared/cardTableRS.hpp"
30#include "gc/shared/collectorPolicy.hpp"
31#include "gc/shared/gcLocker.inline.hpp"
32#include "gc/shared/gcPolicyCounters.hpp"
33#include "gc/shared/genCollectedHeap.hpp"
34#include "gc/shared/generationSpec.hpp"
35#include "gc/shared/space.hpp"
36#include "gc/shared/vmGCOperations.hpp"
37#include "memory/universe.hpp"
38#include "oops/oop.inline.hpp"
39#include "runtime/arguments.hpp"
40#include "runtime/globals_extension.hpp"
41#include "runtime/handles.inline.hpp"
42#include "runtime/java.hpp"
43#include "runtime/thread.inline.hpp"
44#include "runtime/vmThread.hpp"
45
46//
47// ConcurrentMarkSweepPolicy methods
48//
49
50void ConcurrentMarkSweepPolicy::initialize_alignments() {
51  _space_alignment = _gen_alignment = (uintx)Generation::GenGrain;
52  _heap_alignment = compute_heap_alignment();
53}
54
55void ConcurrentMarkSweepPolicy::initialize_generations() {
56  _young_gen_spec = new GenerationSpec(Generation::ParNew, _initial_young_size,
57                                       _max_young_size, _gen_alignment);
58  _old_gen_spec   = new GenerationSpec(Generation::ConcurrentMarkSweep,
59                                       _initial_old_size, _max_old_size, _gen_alignment);
60}
61
62void ConcurrentMarkSweepPolicy::initialize_size_policy(size_t init_eden_size,
63                                               size_t init_promo_size,
64                                               size_t init_survivor_size) {
65  double max_gc_pause_sec = ((double) MaxGCPauseMillis)/1000.0;
66  _size_policy = new AdaptiveSizePolicy(init_eden_size,
67                                        init_promo_size,
68                                        init_survivor_size,
69                                        max_gc_pause_sec,
70                                        GCTimeRatio);
71}
72
73void ConcurrentMarkSweepPolicy::initialize_gc_policy_counters() {
74  // initialize the policy counters - 2 collectors, 3 generations
75  _gc_policy_counters = new GCPolicyCounters("ParNew:CMS", 2, 3);
76}
77