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comparison src/share/vm/gc_implementation/concurrentMarkSweep/cmsCollectorPolicy.cpp @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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1 /*
2 * Copyright (c) 2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 # include "incls/_precompiled.incl"
26 # include "incls/_cmsCollectorPolicy.cpp.incl"
27
28 //
29 // ConcurrentMarkSweepPolicy methods
30 //
31
32 ConcurrentMarkSweepPolicy::ConcurrentMarkSweepPolicy() {
33 initialize_all();
34 }
35
36 void ConcurrentMarkSweepPolicy::initialize_generations() {
37 initialize_perm_generation(PermGen::ConcurrentMarkSweep);
38 _generations = new GenerationSpecPtr[number_of_generations()];
39 if (_generations == NULL)
40 vm_exit_during_initialization("Unable to allocate gen spec");
41
42 if (UseParNewGC && ParallelGCThreads > 0) {
43 if (UseAdaptiveSizePolicy) {
44 _generations[0] = new GenerationSpec(Generation::ASParNew,
45 _initial_gen0_size, _max_gen0_size);
46 } else {
47 _generations[0] = new GenerationSpec(Generation::ParNew,
48 _initial_gen0_size, _max_gen0_size);
49 }
50 } else {
51 _generations[0] = new GenerationSpec(Generation::DefNew,
52 _initial_gen0_size, _max_gen0_size);
53 }
54 if (UseAdaptiveSizePolicy) {
55 _generations[1] = new GenerationSpec(Generation::ASConcurrentMarkSweep,
56 _initial_gen1_size, _max_gen1_size);
57 } else {
58 _generations[1] = new GenerationSpec(Generation::ConcurrentMarkSweep,
59 _initial_gen1_size, _max_gen1_size);
60 }
61
62 if (_generations[0] == NULL || _generations[1] == NULL) {
63 vm_exit_during_initialization("Unable to allocate gen spec");
64 }
65 }
66
67 void ConcurrentMarkSweepPolicy::initialize_size_policy(size_t init_eden_size,
68 size_t init_promo_size,
69 size_t init_survivor_size) {
70 double max_gc_minor_pause_sec = ((double) MaxGCMinorPauseMillis)/1000.0;
71 double max_gc_pause_sec = ((double) MaxGCPauseMillis)/1000.0;
72 _size_policy = new CMSAdaptiveSizePolicy(init_eden_size,
73 init_promo_size,
74 init_survivor_size,
75 max_gc_minor_pause_sec,
76 max_gc_pause_sec,
77 GCTimeRatio);
78 }
79
80 void ConcurrentMarkSweepPolicy::initialize_gc_policy_counters() {
81 // initialize the policy counters - 2 collectors, 3 generations
82 if (UseParNewGC && ParallelGCThreads > 0) {
83 _gc_policy_counters = new GCPolicyCounters("ParNew:CMS", 2, 3);
84 }
85 else {
86 _gc_policy_counters = new GCPolicyCounters("Copy:CMS", 2, 3);
87 }
88 }
89
90 // Returns true if the incremental mode is enabled.
91 bool ConcurrentMarkSweepPolicy::has_soft_ended_eden()
92 {
93 return CMSIncrementalMode;
94 }
95
96
97 //
98 // ASConcurrentMarkSweepPolicy methods
99 //
100
101 void ASConcurrentMarkSweepPolicy::initialize_gc_policy_counters() {
102
103 assert(size_policy() != NULL, "A size policy is required");
104 // initialize the policy counters - 2 collectors, 3 generations
105 if (UseParNewGC && ParallelGCThreads > 0) {
106 _gc_policy_counters = new CMSGCAdaptivePolicyCounters("ParNew:CMS", 2, 3,
107 size_policy());
108 }
109 else {
110 _gc_policy_counters = new CMSGCAdaptivePolicyCounters("Copy:CMS", 2, 3,
111 size_policy());
112 }
113 }