1 /*
2 * Copyright (c) 2007, 2012, 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_implementation/concurrentMarkSweep/cmsAdaptiveSizePolicy.hpp"
27 #include "gc_implementation/concurrentMarkSweep/cmsCollectorPolicy.hpp"
28 #include "gc_implementation/concurrentMarkSweep/cmsGCAdaptivePolicyCounters.hpp"
29 #include "gc_implementation/parNew/parNewGeneration.hpp"
30 #include "gc_implementation/shared/gcPolicyCounters.hpp"
31 #include "gc_implementation/shared/vmGCOperations.hpp"
32 #include "memory/cardTableRS.hpp"
33 #include "memory/collectorPolicy.hpp"
34 #include "memory/gcLocker.inline.hpp"
35 #include "memory/genCollectedHeap.hpp"
36 #include "memory/generationSpec.hpp"
37 #include "memory/space.hpp"
38 #include "memory/universe.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
50 ConcurrentMarkSweepPolicy::ConcurrentMarkSweepPolicy() {
51 initialize_all();
52 }
53
54 void ConcurrentMarkSweepPolicy::initialize_generations() {
55 _generations = new GenerationSpecPtr[number_of_generations()];
56 if (_generations == NULL)
57 vm_exit_during_initialization("Unable to allocate gen spec");
58
59 if (ParNewGeneration::in_use()) {
60 if (UseAdaptiveSizePolicy) {
61 _generations[0] = new GenerationSpec(Generation::ASParNew,
62 _initial_gen0_size, _max_gen0_size);
63 } else {
64 _generations[0] = new GenerationSpec(Generation::ParNew,
65 _initial_gen0_size, _max_gen0_size);
66 }
67 } else {
68 _generations[0] = new GenerationSpec(Generation::DefNew,
69 _initial_gen0_size, _max_gen0_size);
70 }
71 if (UseAdaptiveSizePolicy) {
72 _generations[1] = new GenerationSpec(Generation::ASConcurrentMarkSweep,
73 _initial_gen1_size, _max_gen1_size);
74 } else {
75 _generations[1] = new GenerationSpec(Generation::ConcurrentMarkSweep,
76 _initial_gen1_size, _max_gen1_size);
77 }
78
79 if (_generations[0] == NULL || _generations[1] == NULL) {
80 vm_exit_during_initialization("Unable to allocate gen spec");
81 }
82 }
83
84 void ConcurrentMarkSweepPolicy::initialize_size_policy(size_t init_eden_size,
85 size_t init_promo_size,
86 size_t init_survivor_size) {
87 double max_gc_minor_pause_sec = ((double) MaxGCMinorPauseMillis)/1000.0;
88 double max_gc_pause_sec = ((double) MaxGCPauseMillis)/1000.0;
89 _size_policy = new CMSAdaptiveSizePolicy(init_eden_size,
90 init_promo_size,
91 init_survivor_size,
92 max_gc_minor_pause_sec,
93 max_gc_pause_sec,
94 GCTimeRatio);
95 }
96
97 void ConcurrentMarkSweepPolicy::initialize_gc_policy_counters() {
98 // initialize the policy counters - 2 collectors, 3 generations
99 if (ParNewGeneration::in_use()) {
100 _gc_policy_counters = new GCPolicyCounters("ParNew:CMS", 2, 3);
101 }
102 else {
103 _gc_policy_counters = new GCPolicyCounters("Copy:CMS", 2, 3);
104 }
105 }
106
107 // Returns true if the incremental mode is enabled.
108 bool ConcurrentMarkSweepPolicy::has_soft_ended_eden()
109 {
110 return CMSIncrementalMode;
111 }
112
113
114 //
115 // ASConcurrentMarkSweepPolicy methods
116 //
117
118 void ASConcurrentMarkSweepPolicy::initialize_gc_policy_counters() {
119
120 assert(size_policy() != NULL, "A size policy is required");
121 // initialize the policy counters - 2 collectors, 3 generations
122 if (ParNewGeneration::in_use()) {
123 _gc_policy_counters = new CMSGCAdaptivePolicyCounters("ParNew:CMS", 2, 3,
124 size_policy());
125 }
126 else {
127 _gc_policy_counters = new CMSGCAdaptivePolicyCounters("Copy:CMS", 2, 3,
128 size_policy());
129 }
130 }