1 /*
2 * Copyright (c) 2007, 2010, 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/vmThread.hpp"
44 #ifdef TARGET_OS_FAMILY_linux
45 # include "thread_linux.inline.hpp"
46 #endif
47 #ifdef TARGET_OS_FAMILY_solaris
48 # include "thread_solaris.inline.hpp"
49 #endif
50 #ifdef TARGET_OS_FAMILY_windows
51 # include "thread_windows.inline.hpp"
52 #endif
53
54 //
55 // ConcurrentMarkSweepPolicy methods
56 //
57
58 ConcurrentMarkSweepPolicy::ConcurrentMarkSweepPolicy() {
59 initialize_all();
60 }
61
62 void ConcurrentMarkSweepPolicy::initialize_generations() {
63 initialize_perm_generation(PermGen::ConcurrentMarkSweep);
64 _generations = new GenerationSpecPtr[number_of_generations()];
65 if (_generations == NULL)
66 vm_exit_during_initialization("Unable to allocate gen spec");
67
68 if (ParNewGeneration::in_use()) {
69 if (UseAdaptiveSizePolicy) {
70 _generations[0] = new GenerationSpec(Generation::ASParNew,
71 _initial_gen0_size, _max_gen0_size);
72 } else {
73 _generations[0] = new GenerationSpec(Generation::ParNew,
74 _initial_gen0_size, _max_gen0_size);
75 }
76 } else {
77 _generations[0] = new GenerationSpec(Generation::DefNew,
78 _initial_gen0_size, _max_gen0_size);
79 }
80 if (UseAdaptiveSizePolicy) {
81 _generations[1] = new GenerationSpec(Generation::ASConcurrentMarkSweep,
82 _initial_gen1_size, _max_gen1_size);
83 } else {
84 _generations[1] = new GenerationSpec(Generation::ConcurrentMarkSweep,
85 _initial_gen1_size, _max_gen1_size);
86 }
87
88 if (_generations[0] == NULL || _generations[1] == NULL) {
89 vm_exit_during_initialization("Unable to allocate gen spec");
90 }
91 }
92
93 void ConcurrentMarkSweepPolicy::initialize_size_policy(size_t init_eden_size,
94 size_t init_promo_size,
95 size_t init_survivor_size) {
96 double max_gc_minor_pause_sec = ((double) MaxGCMinorPauseMillis)/1000.0;
97 double max_gc_pause_sec = ((double) MaxGCPauseMillis)/1000.0;
98 _size_policy = new CMSAdaptiveSizePolicy(init_eden_size,
99 init_promo_size,
100 init_survivor_size,
101 max_gc_minor_pause_sec,
102 max_gc_pause_sec,
103 GCTimeRatio);
104 }
105
106 void ConcurrentMarkSweepPolicy::initialize_gc_policy_counters() {
107 // initialize the policy counters - 2 collectors, 3 generations
108 if (ParNewGeneration::in_use()) {
109 _gc_policy_counters = new GCPolicyCounters("ParNew:CMS", 2, 3);
110 }
111 else {
112 _gc_policy_counters = new GCPolicyCounters("Copy:CMS", 2, 3);
113 }
114 }
115
116 // Returns true if the incremental mode is enabled.
117 bool ConcurrentMarkSweepPolicy::has_soft_ended_eden()
118 {
119 return CMSIncrementalMode;
120 }
121
122
123 //
124 // ASConcurrentMarkSweepPolicy methods
125 //
126
127 void ASConcurrentMarkSweepPolicy::initialize_gc_policy_counters() {
128
129 assert(size_policy() != NULL, "A size policy is required");
130 // initialize the policy counters - 2 collectors, 3 generations
131 if (ParNewGeneration::in_use()) {
132 _gc_policy_counters = new CMSGCAdaptivePolicyCounters("ParNew:CMS", 2, 3,
133 size_policy());
134 }
135 else {
136 _gc_policy_counters = new CMSGCAdaptivePolicyCounters("Copy:CMS", 2, 3,
137 size_policy());
138 }
139 }