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annotate src/share/vm/gc_implementation/g1/g1GCPhaseTimes.hpp @ 6219:922993931b3d

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7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause Summary: Also reviewed by: vitalyd@gmail.com. Move the timing out of G1CollectorPolicy into the G1GCPhaseTimes class Reviewed-by: johnc
author brutisso
date Wed, 11 Jul 2012 22:47:38 +0200
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children 3a431b605145
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6219
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1 /*
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2 * Copyright (c) 2012, 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 #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_G1GCPHASETIMESLOG_HPP
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26 #define SHARE_VM_GC_IMPLEMENTATION_G1_G1GCPHASETIMESLOG_HPP
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27
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28 #include "memory/allocation.hpp"
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29 #include "gc_interface/gcCause.hpp"
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30
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31 class G1GCPhaseTimes : public CHeapObj {
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32 friend class G1CollectorPolicy;
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33 friend class TraceGen0TimeData;
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34
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35 private:
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36 uint _active_gc_threads;
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37 uint _max_gc_threads;
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38
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39 GCCause::Cause _gc_cause;
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40 bool _is_young_gc;
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41 bool _is_initial_mark_gc;
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42
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43 double _pause_start_time_sec;
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44
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45 double* _par_last_gc_worker_start_times_ms;
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46 double* _par_last_ext_root_scan_times_ms;
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47 double* _par_last_satb_filtering_times_ms;
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48 double* _par_last_update_rs_times_ms;
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49 double* _par_last_update_rs_processed_buffers;
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50 double* _par_last_scan_rs_times_ms;
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51 double* _par_last_obj_copy_times_ms;
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52 double* _par_last_termination_times_ms;
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53 double* _par_last_termination_attempts;
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54 double* _par_last_gc_worker_end_times_ms;
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55 double* _par_last_gc_worker_times_ms;
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56 double* _par_last_gc_worker_other_times_ms;
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57
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58 double _cur_collection_par_time_ms;
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59
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60 double _cur_collection_code_root_fixup_time_ms;
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61
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62 double _cur_clear_ct_time_ms;
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63 double _cur_ref_proc_time_ms;
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64 double _cur_ref_enq_time_ms;
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65
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66 // Helper methods for detailed logging
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67 void print_par_stats(int level, const char* str, double* data, bool showDecimals = true);
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68 void print_stats(int level, const char* str, double value);
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69 void print_stats(int level, const char* str, double value, int workers);
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70 void print_stats(int level, const char* str, int value);
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71 double avg_value(double* data);
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72 double max_value(double* data);
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73 double sum_of_values(double* data);
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74 double max_sum(double* data1, double* data2);
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75 double accounted_time_ms();
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76
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77 // Card Table Count Cache stats
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78 double _min_clear_cc_time_ms; // min
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79 double _max_clear_cc_time_ms; // max
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80 double _cur_clear_cc_time_ms; // clearing time during current pause
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81 double _cum_clear_cc_time_ms; // cummulative clearing time
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82 jlong _num_cc_clears; // number of times the card count cache has been cleared
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83
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84 // The following insance variables are directly accessed by G1CollectorPolicy
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85 // and TraceGen0TimeData. This is why those classes are declared friends.
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86 // An alternative is to add getters and setters for all of these fields.
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87 // It might also be possible to restructure the code to reduce these
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88 // dependencies.
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89 double _ext_root_scan_time;
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90 double _satb_filtering_time;
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91 double _update_rs_time;
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92 double _update_rs_processed_buffers;
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93 double _scan_rs_time;
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94 double _obj_copy_time;
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95 double _termination_time;
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96
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97 double _cur_collection_start_sec;
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98 double _root_region_scan_wait_time_ms;
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99
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100 double _recorded_young_cset_choice_time_ms;
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101 double _recorded_non_young_cset_choice_time_ms;
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102
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103 double _recorded_young_free_cset_time_ms;
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104 double _recorded_non_young_free_cset_time_ms;
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105
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106 void print(double pause_time_ms);
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107
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108 public:
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109 G1GCPhaseTimes(uint max_gc_threads);
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110 void note_gc_start(double pause_start_time_sec, uint active_gc_threads,
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111 bool is_young_gc, bool is_initial_mark_gc, GCCause::Cause gc_cause);
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112 void note_gc_end(double pause_end_time_sec);
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113 void collapse_par_times();
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114
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115 void record_gc_worker_start_time(uint worker_i, double ms) {
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116 assert(worker_i >= 0, "worker index must be > 0");
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117 assert(worker_i < _active_gc_threads, "worker index out of bounds");
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118 _par_last_gc_worker_start_times_ms[worker_i] = ms;
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119 }
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120
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121 void record_ext_root_scan_time(uint worker_i, double ms) {
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122 assert(worker_i >= 0, "worker index must be > 0");
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123 assert(worker_i < _active_gc_threads, "worker index out of bounds");
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124 _par_last_ext_root_scan_times_ms[worker_i] = ms;
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125 }
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126
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127 void record_satb_filtering_time(uint worker_i, double ms) {
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128 assert(worker_i >= 0, "worker index must be > 0");
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129 assert(worker_i < _active_gc_threads, "worker index out of bounds");
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130 _par_last_satb_filtering_times_ms[worker_i] = ms;
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131 }
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132
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133 void record_update_rs_time(uint worker_i, double ms) {
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134 assert(worker_i >= 0, "worker index must be > 0");
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135 assert(worker_i < _active_gc_threads, "worker index out of bounds");
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136 _par_last_update_rs_times_ms[worker_i] = ms;
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137 }
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138
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139 void record_update_rs_processed_buffers (uint worker_i,
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140 double processed_buffers) {
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141 assert(worker_i >= 0, "worker index must be > 0");
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142 assert(worker_i < _active_gc_threads, "worker index out of bounds");
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143 _par_last_update_rs_processed_buffers[worker_i] = processed_buffers;
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144 }
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145
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146 void record_scan_rs_time(uint worker_i, double ms) {
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147 assert(worker_i >= 0, "worker index must be > 0");
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148 assert(worker_i < _active_gc_threads, "worker index out of bounds");
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149 _par_last_scan_rs_times_ms[worker_i] = ms;
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150 }
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151
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152 void reset_obj_copy_time(uint worker_i) {
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153 assert(worker_i >= 0, "worker index must be > 0");
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154 assert(worker_i < _active_gc_threads, "worker index out of bounds");
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155 _par_last_obj_copy_times_ms[worker_i] = 0.0;
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156 }
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157
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158 void reset_obj_copy_time() {
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159 reset_obj_copy_time(0);
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160 }
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161
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162 void record_obj_copy_time(uint worker_i, double ms) {
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163 assert(worker_i >= 0, "worker index must be > 0");
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164 assert(worker_i < _active_gc_threads, "worker index out of bounds");
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165 _par_last_obj_copy_times_ms[worker_i] += ms;
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166 }
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167
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168 void record_termination(uint worker_i, double ms, size_t attempts) {
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169 assert(worker_i >= 0, "worker index must be > 0");
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170 assert(worker_i < _active_gc_threads, "worker index out of bounds");
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171 _par_last_termination_times_ms[worker_i] = ms;
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172 _par_last_termination_attempts[worker_i] = (double) attempts;
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173 }
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174
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175 void record_gc_worker_end_time(uint worker_i, double ms) {
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176 assert(worker_i >= 0, "worker index must be > 0");
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177 assert(worker_i < _active_gc_threads, "worker index out of bounds");
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178 _par_last_gc_worker_end_times_ms[worker_i] = ms;
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179 }
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180
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181 void record_clear_ct_time(double ms) {
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182 _cur_clear_ct_time_ms = ms;
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183 }
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184
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185 void record_par_time(double ms) {
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186 _cur_collection_par_time_ms = ms;
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187 }
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188
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189 void record_code_root_fixup_time(double ms) {
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190 _cur_collection_code_root_fixup_time_ms = ms;
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191 }
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192
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193 void record_ref_proc_time(double ms) {
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194 _cur_ref_proc_time_ms = ms;
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195 }
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196
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197 void record_ref_enq_time(double ms) {
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198 _cur_ref_enq_time_ms = ms;
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199 }
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200
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201 void record_root_region_scan_wait_time(double time_ms) {
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202 _root_region_scan_wait_time_ms = time_ms;
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203 }
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204
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205 void record_cc_clear_time_ms(double ms);
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206
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207 void record_young_free_cset_time_ms(double time_ms) {
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208 _recorded_young_free_cset_time_ms = time_ms;
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209 }
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210
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211 void record_non_young_free_cset_time_ms(double time_ms) {
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212 _recorded_non_young_free_cset_time_ms = time_ms;
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213 }
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214 };
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215
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216 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1GCPHASETIMESLOG_HPP