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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 } |