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1 /*
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2 * Copyright (c) 2007 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 # include "incls/_precompiled.incl"
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26 # include "incls/_cmsCollectorPolicy.cpp.incl"
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27
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28 //
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29 // ConcurrentMarkSweepPolicy methods
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30 //
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31
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32 ConcurrentMarkSweepPolicy::ConcurrentMarkSweepPolicy() {
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33 initialize_all();
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34 }
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35
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36 void ConcurrentMarkSweepPolicy::initialize_generations() {
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37 initialize_perm_generation(PermGen::ConcurrentMarkSweep);
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38 _generations = new GenerationSpecPtr[number_of_generations()];
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39 if (_generations == NULL)
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40 vm_exit_during_initialization("Unable to allocate gen spec");
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41
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42 if (UseParNewGC && ParallelGCThreads > 0) {
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43 if (UseAdaptiveSizePolicy) {
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44 _generations[0] = new GenerationSpec(Generation::ASParNew,
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45 _initial_gen0_size, _max_gen0_size);
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46 } else {
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47 _generations[0] = new GenerationSpec(Generation::ParNew,
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48 _initial_gen0_size, _max_gen0_size);
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49 }
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50 } else {
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51 _generations[0] = new GenerationSpec(Generation::DefNew,
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52 _initial_gen0_size, _max_gen0_size);
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53 }
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54 if (UseAdaptiveSizePolicy) {
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55 _generations[1] = new GenerationSpec(Generation::ASConcurrentMarkSweep,
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56 _initial_gen1_size, _max_gen1_size);
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57 } else {
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58 _generations[1] = new GenerationSpec(Generation::ConcurrentMarkSweep,
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59 _initial_gen1_size, _max_gen1_size);
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60 }
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61
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62 if (_generations[0] == NULL || _generations[1] == NULL) {
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63 vm_exit_during_initialization("Unable to allocate gen spec");
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64 }
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65 }
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66
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67 void ConcurrentMarkSweepPolicy::initialize_size_policy(size_t init_eden_size,
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68 size_t init_promo_size,
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69 size_t init_survivor_size) {
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70 double max_gc_minor_pause_sec = ((double) MaxGCMinorPauseMillis)/1000.0;
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71 double max_gc_pause_sec = ((double) MaxGCPauseMillis)/1000.0;
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72 _size_policy = new CMSAdaptiveSizePolicy(init_eden_size,
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73 init_promo_size,
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74 init_survivor_size,
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75 max_gc_minor_pause_sec,
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76 max_gc_pause_sec,
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77 GCTimeRatio);
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78 }
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79
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80 void ConcurrentMarkSweepPolicy::initialize_gc_policy_counters() {
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81 // initialize the policy counters - 2 collectors, 3 generations
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82 if (UseParNewGC && ParallelGCThreads > 0) {
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83 _gc_policy_counters = new GCPolicyCounters("ParNew:CMS", 2, 3);
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84 }
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85 else {
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86 _gc_policy_counters = new GCPolicyCounters("Copy:CMS", 2, 3);
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87 }
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88 }
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89
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90 // Returns true if the incremental mode is enabled.
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91 bool ConcurrentMarkSweepPolicy::has_soft_ended_eden()
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92 {
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93 return CMSIncrementalMode;
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94 }
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95
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96
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97 //
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98 // ASConcurrentMarkSweepPolicy methods
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99 //
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100
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101 void ASConcurrentMarkSweepPolicy::initialize_gc_policy_counters() {
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102
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103 assert(size_policy() != NULL, "A size policy is required");
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104 // initialize the policy counters - 2 collectors, 3 generations
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105 if (UseParNewGC && ParallelGCThreads > 0) {
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106 _gc_policy_counters = new CMSGCAdaptivePolicyCounters("ParNew:CMS", 2, 3,
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107 size_policy());
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108 }
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109 else {
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110 _gc_policy_counters = new CMSGCAdaptivePolicyCounters("Copy:CMS", 2, 3,
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111 size_policy());
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112 }
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113 }
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