annotate src/share/vm/gc_implementation/parallelScavenge/psGCAdaptivePolicyCounters.hpp @ 14909:4ca6dc0799b6

Backout jdk9 merge
author Gilles Duboscq <duboscq@ssw.jku.at>
date Tue, 01 Apr 2014 13:57:07 +0200
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1 /*
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2 * Copyright (c) 2003, 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 #ifndef SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSGCADAPTIVEPOLICYCOUNTERS_HPP
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26 #define SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSGCADAPTIVEPOLICYCOUNTERS_HPP
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27
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28 #include "gc_implementation/parallelScavenge/psAdaptiveSizePolicy.hpp"
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29 #include "gc_implementation/shared/gcAdaptivePolicyCounters.hpp"
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30 #include "gc_implementation/shared/gcPolicyCounters.hpp"
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31
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32 // PSGCAdaptivePolicyCounters is a holder class for performance counters
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33 // that track the data and decisions for the ergonomics policy for the
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34 // parallel scavenge collector.
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35
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36 class PSGCAdaptivePolicyCounters : public GCAdaptivePolicyCounters {
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37 friend class VMStructs;
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38
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39 private:
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40 // survivor space vs. tenuring threshold
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41 PerfVariable* _old_promo_size;
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42 PerfVariable* _old_eden_size;
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43 PerfVariable* _avg_promoted_avg_counter;
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44 PerfVariable* _avg_promoted_dev_counter;
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45 PerfVariable* _avg_promoted_padded_avg_counter;
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46 PerfVariable* _avg_pretenured_padded_avg;
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47
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48 // young gen vs. old gen sizing
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49 PerfVariable* _avg_major_pause;
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50 PerfVariable* _avg_major_interval;
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51 PerfVariable* _live_space;
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52 PerfVariable* _free_space;
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53 PerfVariable* _avg_base_footprint;
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54 PerfVariable* _gc_overhead_limit_exceeded_counter;
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55 PerfVariable* _live_at_last_full_gc_counter;
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56 PerfVariable* _old_capacity;
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57 PerfVariable* _boundary_moved;
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58
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59 PerfVariable* _change_old_gen_for_min_pauses;
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60 PerfVariable* _change_young_gen_for_maj_pauses_counter;
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61
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62 PerfVariable* _major_pause_old_slope;
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63 PerfVariable* _minor_pause_old_slope;
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64 PerfVariable* _major_pause_young_slope;
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65
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66 PerfVariable* _scavenge_skipped;
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67 PerfVariable* _full_follows_scavenge;
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68
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69 // Use this time stamp if the gc time stamp is not available.
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70 TimeStamp _counter_time_stamp;
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71
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72 protected:
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73 PSAdaptiveSizePolicy* ps_size_policy() {
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74 return (PSAdaptiveSizePolicy*)_size_policy;
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75 }
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76
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77 public:
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78 PSGCAdaptivePolicyCounters(const char* name, int collectors, int generations,
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79 PSAdaptiveSizePolicy* size_policy);
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80 inline void update_old_capacity(size_t size_in_bytes) {
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81 _old_capacity->set_value(size_in_bytes);
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82 }
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83 inline void update_old_eden_size(size_t old_size) {
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84 _old_eden_size->set_value(old_size);
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85 }
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86 inline void update_old_promo_size(size_t old_size) {
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87 _old_promo_size->set_value(old_size);
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88 }
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89 inline void update_boundary_moved(int size_in_bytes) {
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90 _boundary_moved->set_value(size_in_bytes);
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91 }
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92 inline void update_avg_promoted_avg() {
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93 _avg_promoted_avg_counter->set_value(
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94 (jlong)(ps_size_policy()->avg_promoted()->average())
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95 );
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96 }
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97 inline void update_avg_promoted_dev() {
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98 _avg_promoted_dev_counter->set_value(
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99 (jlong)(ps_size_policy()->avg_promoted()->deviation())
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100 );
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101 }
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102 inline void update_avg_promoted_padded_avg() {
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103 _avg_promoted_padded_avg_counter->set_value(
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104 (jlong)(ps_size_policy()->avg_promoted()->padded_average())
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105 );
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106 }
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107
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108 inline void update_avg_pretenured_padded_avg() {
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109 _avg_pretenured_padded_avg->set_value(
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110 (jlong)(ps_size_policy()->_avg_pretenured->padded_average())
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111 );
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112 }
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113 inline void update_change_young_gen_for_maj_pauses() {
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114 _change_young_gen_for_maj_pauses_counter->set_value(
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115 ps_size_policy()->change_young_gen_for_maj_pauses());
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116 }
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117 inline void update_change_old_gen_for_min_pauses() {
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118 _change_old_gen_for_min_pauses->set_value(
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119 ps_size_policy()->change_old_gen_for_min_pauses());
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120 }
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121
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122 // compute_generations_free_space() statistics
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123
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124 inline void update_avg_major_pause() {
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125 _avg_major_pause->set_value(
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126 (jlong)(ps_size_policy()->_avg_major_pause->average() * 1000.0)
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127 );
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128 }
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129 inline void update_avg_major_interval() {
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130 _avg_major_interval->set_value(
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131 (jlong)(ps_size_policy()->_avg_major_interval->average() * 1000.0)
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132 );
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133 }
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134
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135 inline void update_major_gc_cost_counter() {
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136 _major_gc_cost_counter->set_value(
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137 (jlong)(ps_size_policy()->major_gc_cost() * 100.0)
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138 );
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139 }
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140 inline void update_mutator_cost_counter() {
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141 _mutator_cost_counter->set_value(
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142 (jlong)(ps_size_policy()->mutator_cost() * 100.0)
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143 );
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144 }
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145
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146 inline void update_live_space() {
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147 _live_space->set_value(ps_size_policy()->live_space());
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148 }
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149 inline void update_free_space() {
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150 _free_space->set_value(ps_size_policy()->free_space());
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151 }
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152
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153 inline void update_avg_base_footprint() {
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154 _avg_base_footprint->set_value(
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155 (jlong)(ps_size_policy()->avg_base_footprint()->average())
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156 );
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157 }
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158 inline void update_avg_old_live() {
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159 _avg_old_live_counter->set_value(
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160 (jlong)(ps_size_policy()->avg_old_live()->average())
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161 );
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162 }
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163 // Scale up all the slopes
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164 inline void update_major_pause_old_slope() {
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165 _major_pause_old_slope->set_value(
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166 (jlong)(ps_size_policy()->major_pause_old_slope() * 1000)
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167 );
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168 }
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169 inline void update_minor_pause_old_slope() {
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170 _minor_pause_old_slope->set_value(
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171 (jlong)(ps_size_policy()->minor_pause_old_slope() * 1000)
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172 );
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173 }
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174 inline void update_major_pause_young_slope() {
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175 _major_pause_young_slope->set_value(
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176 (jlong)(ps_size_policy()->major_pause_young_slope() * 1000)
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177 );
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178 }
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179 inline void update_gc_overhead_limit_exceeded_counter() {
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180 _gc_overhead_limit_exceeded_counter->set_value(
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181 (jlong) ps_size_policy()->gc_overhead_limit_exceeded());
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182 }
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183 inline void update_live_at_last_full_gc_counter() {
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184 _live_at_last_full_gc_counter->set_value(
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185 (jlong)(ps_size_policy()->live_at_last_full_gc()));
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186 }
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187
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188 inline void update_scavenge_skipped(int cause) {
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189 _scavenge_skipped->set_value(cause);
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190 }
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191
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192 inline void update_full_follows_scavenge(int event) {
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193 _full_follows_scavenge->set_value(event);
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194 }
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195
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196 // Update all the counters that can be updated from the size policy.
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197 // This should be called after all policy changes have been made
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198 // and reflected internall in the size policy.
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199 void update_counters_from_policy();
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200
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201 // Update counters that can be updated from fields internal to the
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202 // counter or from globals. This is distinguished from counters
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203 // that are updated via input parameters.
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204 void update_counters();
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205
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206 virtual GCPolicyCounters::Name kind() const {
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207 return GCPolicyCounters::PSGCAdaptivePolicyCountersKind;
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208 }
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209 };
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210
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211 #endif // SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSGCADAPTIVEPOLICYCOUNTERS_HPP