Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/g1/g1RemSetSummary.cpp @ 13037:c8fc12209830
8027616: Off by one error in putback for compressed oops nashorn performance improvement
Summary: Should compare bounds greater than or equal 4G when deciding if shift is needed or CDS area + compressed class space are within 4G of each other.
Reviewed-by: stefank, hseigel, zgu
author | coleenp |
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date | Thu, 31 Oct 2013 14:11:02 -0400 |
parents | c7f403b05168 |
children | c02ec279b062 |
rev | line source |
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1 /* |
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2 * Copyright (c) 2013, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 * |
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23 */ |
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24 |
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25 #include "precompiled.hpp" |
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26 #include "gc_implementation/g1/concurrentG1Refine.hpp" |
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27 #include "gc_implementation/g1/concurrentG1RefineThread.hpp" |
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28 #include "gc_implementation/g1/heapRegion.hpp" |
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29 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp" |
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30 #include "gc_implementation/g1/g1RemSet.inline.hpp" |
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31 #include "gc_implementation/g1/g1RemSetSummary.hpp" |
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32 #include "gc_implementation/g1/heapRegionRemSet.hpp" |
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33 #include "runtime/thread.inline.hpp" |
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34 |
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35 class GetRSThreadVTimeClosure : public ThreadClosure { |
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36 private: |
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37 G1RemSetSummary* _summary; |
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38 uint _counter; |
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39 |
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40 public: |
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41 GetRSThreadVTimeClosure(G1RemSetSummary * summary) : ThreadClosure(), _summary(summary), _counter(0) { |
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42 assert(_summary != NULL, "just checking"); |
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43 } |
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44 |
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45 virtual void do_thread(Thread* t) { |
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46 ConcurrentG1RefineThread* crt = (ConcurrentG1RefineThread*) t; |
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47 _summary->set_rs_thread_vtime(_counter, crt->vtime_accum()); |
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48 _counter++; |
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49 } |
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50 }; |
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51 |
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52 void G1RemSetSummary::update() { |
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53 _num_refined_cards = remset()->conc_refine_cards(); |
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54 DirtyCardQueueSet& dcqs = JavaThread::dirty_card_queue_set(); |
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55 _num_processed_buf_mutator = dcqs.processed_buffers_mut(); |
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56 _num_processed_buf_rs_threads = dcqs.processed_buffers_rs_thread(); |
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57 |
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58 _num_coarsenings = HeapRegionRemSet::n_coarsenings(); |
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59 |
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60 ConcurrentG1Refine * cg1r = G1CollectedHeap::heap()->concurrent_g1_refine(); |
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61 if (_rs_threads_vtimes != NULL) { |
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62 GetRSThreadVTimeClosure p(this); |
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63 cg1r->worker_threads_do(&p); |
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64 } |
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65 set_sampling_thread_vtime(cg1r->sampling_thread()->vtime_accum()); |
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66 } |
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67 |
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68 void G1RemSetSummary::set_rs_thread_vtime(uint thread, double value) { |
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69 assert(_rs_threads_vtimes != NULL, "just checking"); |
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70 assert(thread < _num_vtimes, "just checking"); |
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71 _rs_threads_vtimes[thread] = value; |
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72 } |
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73 |
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74 double G1RemSetSummary::rs_thread_vtime(uint thread) const { |
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75 assert(_rs_threads_vtimes != NULL, "just checking"); |
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76 assert(thread < _num_vtimes, "just checking"); |
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77 return _rs_threads_vtimes[thread]; |
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78 } |
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79 |
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80 void G1RemSetSummary::initialize(G1RemSet* remset) { |
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81 assert(_rs_threads_vtimes == NULL, "just checking"); |
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82 assert(remset != NULL, "just checking"); |
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83 |
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84 _remset = remset; |
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85 _num_vtimes = ConcurrentG1Refine::thread_num(); |
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86 _rs_threads_vtimes = NEW_C_HEAP_ARRAY(double, _num_vtimes, mtGC); |
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87 memset(_rs_threads_vtimes, 0, sizeof(double) * _num_vtimes); |
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88 |
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89 update(); |
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90 } |
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91 |
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92 void G1RemSetSummary::set(G1RemSetSummary* other) { |
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93 assert(other != NULL, "just checking"); |
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94 assert(remset() == other->remset(), "just checking"); |
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95 assert(_num_vtimes == other->_num_vtimes, "just checking"); |
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96 |
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97 _num_refined_cards = other->num_concurrent_refined_cards(); |
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98 |
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99 _num_processed_buf_mutator = other->num_processed_buf_mutator(); |
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100 _num_processed_buf_rs_threads = other->num_processed_buf_rs_threads(); |
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101 |
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102 _num_coarsenings = other->_num_coarsenings; |
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103 |
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104 memcpy(_rs_threads_vtimes, other->_rs_threads_vtimes, sizeof(double) * _num_vtimes); |
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105 |
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106 set_sampling_thread_vtime(other->sampling_thread_vtime()); |
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107 } |
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108 |
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109 void G1RemSetSummary::subtract_from(G1RemSetSummary* other) { |
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110 assert(other != NULL, "just checking"); |
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111 assert(remset() == other->remset(), "just checking"); |
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112 assert(_num_vtimes == other->_num_vtimes, "just checking"); |
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113 |
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114 _num_refined_cards = other->num_concurrent_refined_cards() - _num_refined_cards; |
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115 |
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116 _num_processed_buf_mutator = other->num_processed_buf_mutator() - _num_processed_buf_mutator; |
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117 _num_processed_buf_rs_threads = other->num_processed_buf_rs_threads() - _num_processed_buf_rs_threads; |
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118 |
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119 _num_coarsenings = other->num_coarsenings() - _num_coarsenings; |
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120 |
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121 for (uint i = 0; i < _num_vtimes; i++) { |
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122 set_rs_thread_vtime(i, other->rs_thread_vtime(i) - rs_thread_vtime(i)); |
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123 } |
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124 |
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125 _sampling_thread_vtime = other->sampling_thread_vtime() - _sampling_thread_vtime; |
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126 } |
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127 |
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128 static double percent_of(size_t numerator, size_t denominator) { |
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129 if (denominator != 0) { |
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130 return (double)numerator / denominator * 100.0f; |
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131 } else { |
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132 return 0.0f; |
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133 } |
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134 } |
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135 |
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136 static size_t round_to_K(size_t value) { |
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137 return value / K; |
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138 } |
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139 |
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140 class RegionTypeCounter VALUE_OBJ_CLASS_SPEC { |
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141 private: |
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142 const char* _name; |
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143 |
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144 size_t _rs_mem_size; |
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145 size_t _cards_occupied; |
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146 size_t _amount; |
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147 |
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148 size_t _code_root_mem_size; |
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149 size_t _code_root_elems; |
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150 |
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151 double rs_mem_size_percent_of(size_t total) { |
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152 return percent_of(_rs_mem_size, total); |
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153 } |
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154 |
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155 double cards_occupied_percent_of(size_t total) { |
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156 return percent_of(_cards_occupied, total); |
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157 } |
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158 |
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159 double code_root_mem_size_percent_of(size_t total) { |
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160 return percent_of(_code_root_mem_size, total); |
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161 } |
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162 |
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163 double code_root_elems_percent_of(size_t total) { |
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164 return percent_of(_code_root_elems, total); |
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165 } |
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166 |
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167 size_t amount() const { return _amount; } |
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168 |
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169 public: |
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170 |
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171 RegionTypeCounter(const char* name) : _name(name), _rs_mem_size(0), _cards_occupied(0), |
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172 _amount(0), _code_root_mem_size(0), _code_root_elems(0) { } |
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173 |
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174 void add(size_t rs_mem_size, size_t cards_occupied, size_t code_root_mem_size, |
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175 size_t code_root_elems) { |
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176 _rs_mem_size += rs_mem_size; |
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177 _cards_occupied += cards_occupied; |
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178 _code_root_mem_size += code_root_mem_size; |
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179 _code_root_elems += code_root_elems; |
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180 _amount++; |
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181 } |
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182 |
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183 size_t rs_mem_size() const { return _rs_mem_size; } |
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184 size_t cards_occupied() const { return _cards_occupied; } |
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185 |
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186 size_t code_root_mem_size() const { return _code_root_mem_size; } |
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187 size_t code_root_elems() const { return _code_root_elems; } |
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188 |
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189 void print_rs_mem_info_on(outputStream * out, size_t total) { |
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190 out->print_cr(" "SIZE_FORMAT_W(8)"K (%5.1f%%) by "SIZE_FORMAT" %s regions", |
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191 round_to_K(rs_mem_size()), rs_mem_size_percent_of(total), amount(), _name); |
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192 } |
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193 |
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194 void print_cards_occupied_info_on(outputStream * out, size_t total) { |
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195 out->print_cr(" "SIZE_FORMAT_W(8)" (%5.1f%%) entries by "SIZE_FORMAT" %s regions", |
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196 cards_occupied(), cards_occupied_percent_of(total), amount(), _name); |
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197 } |
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198 |
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199 void print_code_root_mem_info_on(outputStream * out, size_t total) { |
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200 out->print_cr(" "SIZE_FORMAT_W(8)"K (%5.1f%%) by "SIZE_FORMAT" %s regions", |
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201 round_to_K(code_root_mem_size()), code_root_mem_size_percent_of(total), amount(), _name); |
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202 } |
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203 |
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204 void print_code_root_elems_info_on(outputStream * out, size_t total) { |
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205 out->print_cr(" "SIZE_FORMAT_W(8)" (%5.1f%%) elements by "SIZE_FORMAT" %s regions", |
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206 code_root_elems(), code_root_elems_percent_of(total), amount(), _name); |
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207 } |
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208 }; |
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209 |
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210 |
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211 class HRRSStatsIter: public HeapRegionClosure { |
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212 private: |
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213 RegionTypeCounter _young; |
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214 RegionTypeCounter _humonguous; |
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215 RegionTypeCounter _free; |
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216 RegionTypeCounter _old; |
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217 RegionTypeCounter _all; |
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219 size_t _max_rs_mem_sz; | |
220 HeapRegion* _max_rs_mem_sz_region; | |
221 | |
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222 size_t total_rs_mem_sz() const { return _all.rs_mem_size(); } |
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223 size_t total_cards_occupied() const { return _all.cards_occupied(); } |
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224 |
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225 size_t max_rs_mem_sz() const { return _max_rs_mem_sz; } |
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226 HeapRegion* max_rs_mem_sz_region() const { return _max_rs_mem_sz_region; } |
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227 |
12080 | 228 size_t _max_code_root_mem_sz; |
229 HeapRegion* _max_code_root_mem_sz_region; | |
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230 |
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231 size_t total_code_root_mem_sz() const { return _all.code_root_mem_size(); } |
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232 size_t total_code_root_elems() const { return _all.code_root_elems(); } |
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233 |
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234 size_t max_code_root_mem_sz() const { return _max_code_root_mem_sz; } |
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235 HeapRegion* max_code_root_mem_sz_region() const { return _max_code_root_mem_sz_region; } |
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236 |
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237 public: |
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238 HRRSStatsIter() : _all("All"), _young("Young"), _humonguous("Humonguous"), |
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239 _free("Free"), _old("Old"), _max_code_root_mem_sz_region(NULL), _max_rs_mem_sz_region(NULL), |
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240 _max_rs_mem_sz(0), _max_code_root_mem_sz(0) |
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241 {} |
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242 |
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243 bool doHeapRegion(HeapRegion* r) { |
12080 | 244 HeapRegionRemSet* hrrs = r->rem_set(); |
245 | |
246 // HeapRegionRemSet::mem_size() includes the | |
247 // size of the strong code roots | |
248 size_t rs_mem_sz = hrrs->mem_size(); | |
249 if (rs_mem_sz > _max_rs_mem_sz) { | |
250 _max_rs_mem_sz = rs_mem_sz; | |
251 _max_rs_mem_sz_region = r; | |
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252 } |
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253 size_t occupied_cards = hrrs->occupied(); |
12080 | 254 size_t code_root_mem_sz = hrrs->strong_code_roots_mem_size(); |
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255 if (code_root_mem_sz > max_code_root_mem_sz()) { |
12080 | 256 _max_code_root_mem_sz_region = r; |
257 } | |
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258 size_t code_root_elems = hrrs->strong_code_roots_list_length(); |
12080 | 259 |
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260 RegionTypeCounter* current = NULL; |
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261 if (r->is_young()) { |
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262 current = &_young; |
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263 } else if (r->isHumongous()) { |
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264 current = &_humonguous; |
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265 } else if (r->is_empty()) { |
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266 current = &_free; |
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267 } else { |
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268 current = &_old; |
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269 } |
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270 current->add(rs_mem_sz, occupied_cards, code_root_mem_sz, code_root_elems); |
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271 _all.add(rs_mem_sz, occupied_cards, code_root_mem_sz, code_root_elems); |
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272 |
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273 return false; |
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274 } |
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275 |
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276 void print_summary_on(outputStream* out) { |
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277 RegionTypeCounter* counters[] = { &_young, &_humonguous, &_free, &_old, NULL }; |
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278 |
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279 out->print_cr("\n Current rem set statistics"); |
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280 out->print_cr(" Total per region rem sets sizes = "SIZE_FORMAT"K." |
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281 " Max = "SIZE_FORMAT"K.", |
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282 round_to_K(total_rs_mem_sz()), round_to_K(max_rs_mem_sz())); |
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283 for (RegionTypeCounter** current = &counters[0]; *current != NULL; current++) { |
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284 (*current)->print_rs_mem_info_on(out, total_rs_mem_sz()); |
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285 } |
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286 |
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287 out->print_cr(" Static structures = "SIZE_FORMAT"K," |
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288 " free_lists = "SIZE_FORMAT"K.", |
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289 round_to_K(HeapRegionRemSet::static_mem_size()), |
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290 round_to_K(HeapRegionRemSet::fl_mem_size())); |
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291 |
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292 out->print_cr(" "SIZE_FORMAT" occupied cards represented.", |
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293 total_cards_occupied()); |
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294 for (RegionTypeCounter** current = &counters[0]; *current != NULL; current++) { |
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295 (*current)->print_cards_occupied_info_on(out, total_cards_occupied()); |
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296 } |
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297 |
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298 // Largest sized rem set region statistics |
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299 HeapRegionRemSet* rem_set = max_rs_mem_sz_region()->rem_set(); |
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300 out->print_cr(" Region with largest rem set = "HR_FORMAT", " |
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301 "size = "SIZE_FORMAT "K, occupied = "SIZE_FORMAT"K.", |
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302 HR_FORMAT_PARAMS(max_rs_mem_sz_region()), |
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303 round_to_K(rem_set->mem_size()), |
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304 round_to_K(rem_set->occupied())); |
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305 |
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306 // Strong code root statistics |
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307 HeapRegionRemSet* max_code_root_rem_set = max_code_root_mem_sz_region()->rem_set(); |
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308 out->print_cr(" Total heap region code root sets sizes = "SIZE_FORMAT"K." |
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309 " Max = "SIZE_FORMAT"K.", |
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310 round_to_K(total_code_root_mem_sz()), |
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311 round_to_K(max_code_root_rem_set->strong_code_roots_mem_size())); |
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312 for (RegionTypeCounter** current = &counters[0]; *current != NULL; current++) { |
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313 (*current)->print_code_root_mem_info_on(out, total_code_root_mem_sz()); |
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314 } |
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315 |
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316 out->print_cr(" "SIZE_FORMAT" code roots represented.", |
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317 total_code_root_elems()); |
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318 for (RegionTypeCounter** current = &counters[0]; *current != NULL; current++) { |
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319 (*current)->print_code_root_elems_info_on(out, total_code_root_elems()); |
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320 } |
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321 |
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322 out->print_cr(" Region with largest amount of code roots = "HR_FORMAT", " |
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323 "size = "SIZE_FORMAT "K, num_elems = "SIZE_FORMAT".", |
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324 HR_FORMAT_PARAMS(max_code_root_mem_sz_region()), |
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325 round_to_K(max_code_root_rem_set->strong_code_roots_mem_size()), |
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326 round_to_K(max_code_root_rem_set->strong_code_roots_list_length())); |
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327 } |
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328 }; |
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329 |
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330 void G1RemSetSummary::print_on(outputStream* out) { |
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331 out->print_cr("\n Recent concurrent refinement statistics"); |
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332 out->print_cr(" Processed "SIZE_FORMAT" cards", |
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333 num_concurrent_refined_cards()); |
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334 out->print_cr(" Of "SIZE_FORMAT" completed buffers:", num_processed_buf_total()); |
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335 out->print_cr(" "SIZE_FORMAT_W(8)" (%5.1f%%) by concurrent RS threads.", |
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336 num_processed_buf_total(), |
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337 percent_of(num_processed_buf_rs_threads(), num_processed_buf_total())); |
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338 out->print_cr(" "SIZE_FORMAT_W(8)" (%5.1f%%) by mutator threads.", |
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339 num_processed_buf_mutator(), |
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340 percent_of(num_processed_buf_mutator(), num_processed_buf_total())); |
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341 out->print_cr(" Did "SIZE_FORMAT" coarsenings.", num_coarsenings()); |
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342 out->print_cr(" Concurrent RS threads times (s)"); |
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343 out->print(" "); |
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344 for (uint i = 0; i < _num_vtimes; i++) { |
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345 out->print(" %5.2f", rs_thread_vtime(i)); |
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346 } |
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347 out->cr(); |
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348 out->print_cr(" Concurrent sampling threads times (s)"); |
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349 out->print_cr(" %5.2f", sampling_thread_vtime()); |
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350 |
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351 HRRSStatsIter blk; |
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352 G1CollectedHeap::heap()->heap_region_iterate(&blk); |
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353 blk.print_summary_on(out); |
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354 } |