Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/g1/g1GCPhaseTimes.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 | 5888334c9c24 |
children | 191174b49bec |
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 |
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26 #include "precompiled.hpp" |
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27 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp" |
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28 #include "gc_implementation/g1/g1GCPhaseTimes.hpp" |
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29 #include "gc_implementation/g1/g1Log.hpp" |
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30 |
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31 // Helper class for avoiding interleaved logging |
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32 class LineBuffer: public StackObj { |
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33 |
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34 private: |
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35 static const int BUFFER_LEN = 1024; |
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36 static const int INDENT_CHARS = 3; |
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37 char _buffer[BUFFER_LEN]; |
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38 int _indent_level; |
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39 int _cur; |
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40 |
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41 void vappend(const char* format, va_list ap) { |
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42 int res = vsnprintf(&_buffer[_cur], BUFFER_LEN - _cur, format, ap); |
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43 if (res != -1) { |
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44 _cur += res; |
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45 } else { |
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46 DEBUG_ONLY(warning("buffer too small in LineBuffer");) |
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47 _buffer[BUFFER_LEN -1] = 0; |
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48 _cur = BUFFER_LEN; // vsnprintf above should not add to _buffer if we are called again |
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49 } |
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50 } |
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51 |
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52 public: |
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53 explicit LineBuffer(int indent_level): _indent_level(indent_level), _cur(0) { |
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54 for (; (_cur < BUFFER_LEN && _cur < (_indent_level * INDENT_CHARS)); _cur++) { |
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55 _buffer[_cur] = ' '; |
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56 } |
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57 } |
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58 |
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59 #ifndef PRODUCT |
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60 ~LineBuffer() { |
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61 assert(_cur == _indent_level * INDENT_CHARS, "pending data in buffer - append_and_print_cr() not called?"); |
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62 } |
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63 #endif |
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64 |
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65 void append(const char* format, ...) { |
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66 va_list ap; |
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67 va_start(ap, format); |
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68 vappend(format, ap); |
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69 va_end(ap); |
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70 } |
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71 |
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72 void append_and_print_cr(const char* format, ...) { |
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73 va_list ap; |
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74 va_start(ap, format); |
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75 vappend(format, ap); |
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76 va_end(ap); |
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77 gclog_or_tty->print_cr("%s", _buffer); |
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78 _cur = _indent_level * INDENT_CHARS; |
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79 } |
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80 }; |
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81 |
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82 template <class T> |
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83 void WorkerDataArray<T>::print(int level, const char* title) { |
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84 if (_length == 1) { |
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85 // No need for min, max, average and sum for only one worker |
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86 LineBuffer buf(level); |
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87 buf.append("[%s: ", title); |
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88 buf.append(_print_format, _data[0]); |
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89 buf.append_and_print_cr("]"); |
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90 return; |
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91 } |
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92 |
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93 T min = _data[0]; |
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94 T max = _data[0]; |
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95 T sum = 0; |
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96 |
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97 LineBuffer buf(level); |
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98 buf.append("[%s:", title); |
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99 for (uint i = 0; i < _length; ++i) { |
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100 T val = _data[i]; |
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101 min = MIN2(val, min); |
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102 max = MAX2(val, max); |
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103 sum += val; |
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104 if (G1Log::finest()) { |
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105 buf.append(" "); |
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106 buf.append(_print_format, val); |
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107 } |
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108 } |
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109 |
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110 if (G1Log::finest()) { |
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111 buf.append_and_print_cr(""); |
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112 } |
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113 |
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114 double avg = (double)sum / (double)_length; |
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115 buf.append(" Min: "); |
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116 buf.append(_print_format, min); |
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117 buf.append(", Avg: "); |
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118 buf.append("%.1lf", avg); // Always print average as a double |
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119 buf.append(", Max: "); |
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120 buf.append(_print_format, max); |
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121 buf.append(", Diff: "); |
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122 buf.append(_print_format, max - min); |
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123 if (_print_sum) { |
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124 // for things like the start and end times the sum is not |
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125 // that relevant |
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126 buf.append(", Sum: "); |
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127 buf.append(_print_format, sum); |
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128 } |
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129 buf.append_and_print_cr("]"); |
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130 } |
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131 |
6786 | 132 #ifndef PRODUCT |
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133 |
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134 template <> const int WorkerDataArray<int>::_uninitialized = -1; |
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135 template <> const double WorkerDataArray<double>::_uninitialized = -1.0; |
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136 template <> const size_t WorkerDataArray<size_t>::_uninitialized = (size_t)-1; |
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137 |
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138 template <class T> |
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139 void WorkerDataArray<T>::reset() { |
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140 for (uint i = 0; i < _length; i++) { |
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141 _data[i] = (T)_uninitialized; |
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142 } |
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143 } |
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144 |
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145 template <class T> |
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146 void WorkerDataArray<T>::verify() { |
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147 for (uint i = 0; i < _length; i++) { |
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148 assert(_data[i] != _uninitialized, |
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149 err_msg("Invalid data for worker " UINT32_FORMAT ", data: %lf, uninitialized: %lf", |
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150 i, (double)_data[i], (double)_uninitialized)); |
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151 } |
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152 } |
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153 |
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154 #endif |
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155 |
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156 G1GCPhaseTimes::G1GCPhaseTimes(uint max_gc_threads) : |
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157 _max_gc_threads(max_gc_threads), |
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158 _last_gc_worker_start_times_ms(_max_gc_threads, "%.1lf", false), |
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159 _last_ext_root_scan_times_ms(_max_gc_threads, "%.1lf"), |
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160 _last_satb_filtering_times_ms(_max_gc_threads, "%.1lf"), |
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161 _last_update_rs_times_ms(_max_gc_threads, "%.1lf"), |
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162 _last_update_rs_processed_buffers(_max_gc_threads, "%d"), |
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163 _last_scan_rs_times_ms(_max_gc_threads, "%.1lf"), |
12080 | 164 _last_strong_code_root_scan_times_ms(_max_gc_threads, "%.1lf"), |
165 _last_strong_code_root_mark_times_ms(_max_gc_threads, "%.1lf"), | |
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166 _last_obj_copy_times_ms(_max_gc_threads, "%.1lf"), |
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167 _last_termination_times_ms(_max_gc_threads, "%.1lf"), |
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168 _last_termination_attempts(_max_gc_threads, SIZE_FORMAT), |
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169 _last_gc_worker_end_times_ms(_max_gc_threads, "%.1lf", false), |
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170 _last_gc_worker_times_ms(_max_gc_threads, "%.1lf"), |
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171 _last_gc_worker_other_times_ms(_max_gc_threads, "%.1lf") |
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172 { |
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173 assert(max_gc_threads > 0, "Must have some GC threads"); |
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174 } |
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175 |
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176 void G1GCPhaseTimes::note_gc_start(uint active_gc_threads) { |
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177 assert(active_gc_threads > 0, "The number of threads must be > 0"); |
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178 assert(active_gc_threads <= _max_gc_threads, "The number of active threads must be <= the max nubmer of threads"); |
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179 _active_gc_threads = active_gc_threads; |
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180 |
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181 _last_gc_worker_start_times_ms.reset(); |
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182 _last_ext_root_scan_times_ms.reset(); |
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183 _last_satb_filtering_times_ms.reset(); |
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184 _last_update_rs_times_ms.reset(); |
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185 _last_update_rs_processed_buffers.reset(); |
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186 _last_scan_rs_times_ms.reset(); |
12080 | 187 _last_strong_code_root_scan_times_ms.reset(); |
188 _last_strong_code_root_mark_times_ms.reset(); | |
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189 _last_obj_copy_times_ms.reset(); |
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190 _last_termination_times_ms.reset(); |
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191 _last_termination_attempts.reset(); |
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192 _last_gc_worker_end_times_ms.reset(); |
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193 _last_gc_worker_times_ms.reset(); |
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194 _last_gc_worker_other_times_ms.reset(); |
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195 } |
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196 |
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197 void G1GCPhaseTimes::note_gc_end() { |
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198 _last_gc_worker_start_times_ms.verify(); |
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199 _last_ext_root_scan_times_ms.verify(); |
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200 _last_satb_filtering_times_ms.verify(); |
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201 _last_update_rs_times_ms.verify(); |
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202 _last_update_rs_processed_buffers.verify(); |
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203 _last_scan_rs_times_ms.verify(); |
12080 | 204 _last_strong_code_root_scan_times_ms.verify(); |
205 _last_strong_code_root_mark_times_ms.verify(); | |
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206 _last_obj_copy_times_ms.verify(); |
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207 _last_termination_times_ms.verify(); |
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208 _last_termination_attempts.verify(); |
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209 _last_gc_worker_end_times_ms.verify(); |
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210 |
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211 for (uint i = 0; i < _active_gc_threads; i++) { |
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212 double worker_time = _last_gc_worker_end_times_ms.get(i) - _last_gc_worker_start_times_ms.get(i); |
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213 _last_gc_worker_times_ms.set(i, worker_time); |
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214 |
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215 double worker_known_time = _last_ext_root_scan_times_ms.get(i) + |
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216 _last_satb_filtering_times_ms.get(i) + |
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217 _last_update_rs_times_ms.get(i) + |
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218 _last_scan_rs_times_ms.get(i) + |
12080 | 219 _last_strong_code_root_scan_times_ms.get(i) + |
220 _last_strong_code_root_mark_times_ms.get(i) + | |
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221 _last_obj_copy_times_ms.get(i) + |
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222 _last_termination_times_ms.get(i); |
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223 |
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224 double worker_other_time = worker_time - worker_known_time; |
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225 _last_gc_worker_other_times_ms.set(i, worker_other_time); |
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226 } |
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227 |
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228 _last_gc_worker_times_ms.verify(); |
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229 _last_gc_worker_other_times_ms.verify(); |
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230 } |
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231 |
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232 void G1GCPhaseTimes::print_stats(int level, const char* str, double value) { |
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233 LineBuffer(level).append_and_print_cr("[%s: %.1lf ms]", str, value); |
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234 } |
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235 |
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236 void G1GCPhaseTimes::print_stats(int level, const char* str, double value, int workers) { |
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237 LineBuffer(level).append_and_print_cr("[%s: %.1lf ms, GC Workers: %d]", str, value, workers); |
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238 } |
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239 |
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240 double G1GCPhaseTimes::accounted_time_ms() { |
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241 // Subtract the root region scanning wait time. It's initialized to |
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242 // zero at the start of the pause. |
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243 double misc_time_ms = _root_region_scan_wait_time_ms; |
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244 |
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245 misc_time_ms += _cur_collection_par_time_ms; |
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246 |
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247 // Now subtract the time taken to fix up roots in generated code |
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248 misc_time_ms += _cur_collection_code_root_fixup_time_ms; |
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249 |
12080 | 250 // Strong code root migration time |
251 misc_time_ms += _cur_strong_code_root_migration_time_ms; | |
252 | |
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253 // Subtract the time taken to clean the card table from the |
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254 // current value of "other time" |
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255 misc_time_ms += _cur_clear_ct_time_ms; |
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256 |
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257 return misc_time_ms; |
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258 } |
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259 |
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260 void G1GCPhaseTimes::print(double pause_time_sec) { |
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261 if (_root_region_scan_wait_time_ms > 0.0) { |
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262 print_stats(1, "Root Region Scan Waiting", _root_region_scan_wait_time_ms); |
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263 } |
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264 if (G1CollectedHeap::use_parallel_gc_threads()) { |
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265 print_stats(1, "Parallel Time", _cur_collection_par_time_ms, _active_gc_threads); |
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266 _last_gc_worker_start_times_ms.print(2, "GC Worker Start (ms)"); |
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267 _last_ext_root_scan_times_ms.print(2, "Ext Root Scanning (ms)"); |
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268 if (_last_satb_filtering_times_ms.sum() > 0.0) { |
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269 _last_satb_filtering_times_ms.print(2, "SATB Filtering (ms)"); |
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270 } |
12080 | 271 if (_last_strong_code_root_mark_times_ms.sum() > 0.0) { |
272 _last_strong_code_root_mark_times_ms.print(2, "Code Root Marking (ms)"); | |
273 } | |
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274 _last_update_rs_times_ms.print(2, "Update RS (ms)"); |
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275 _last_update_rs_processed_buffers.print(3, "Processed Buffers"); |
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276 _last_scan_rs_times_ms.print(2, "Scan RS (ms)"); |
12080 | 277 _last_strong_code_root_scan_times_ms.print(2, "Code Root Scanning (ms)"); |
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278 _last_obj_copy_times_ms.print(2, "Object Copy (ms)"); |
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279 _last_termination_times_ms.print(2, "Termination (ms)"); |
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280 if (G1Log::finest()) { |
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281 _last_termination_attempts.print(3, "Termination Attempts"); |
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282 } |
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283 _last_gc_worker_other_times_ms.print(2, "GC Worker Other (ms)"); |
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284 _last_gc_worker_times_ms.print(2, "GC Worker Total (ms)"); |
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285 _last_gc_worker_end_times_ms.print(2, "GC Worker End (ms)"); |
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286 } else { |
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287 _last_ext_root_scan_times_ms.print(1, "Ext Root Scanning (ms)"); |
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288 if (_last_satb_filtering_times_ms.sum() > 0.0) { |
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289 _last_satb_filtering_times_ms.print(1, "SATB Filtering (ms)"); |
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290 } |
12080 | 291 if (_last_strong_code_root_mark_times_ms.sum() > 0.0) { |
292 _last_strong_code_root_mark_times_ms.print(1, "Code Root Marking (ms)"); | |
293 } | |
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294 _last_update_rs_times_ms.print(1, "Update RS (ms)"); |
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295 _last_update_rs_processed_buffers.print(2, "Processed Buffers"); |
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296 _last_scan_rs_times_ms.print(1, "Scan RS (ms)"); |
12080 | 297 _last_strong_code_root_scan_times_ms.print(1, "Code Root Scanning (ms)"); |
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298 _last_obj_copy_times_ms.print(1, "Object Copy (ms)"); |
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299 } |
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300 print_stats(1, "Code Root Fixup", _cur_collection_code_root_fixup_time_ms); |
12080 | 301 print_stats(1, "Code Root Migration", _cur_strong_code_root_migration_time_ms); |
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302 print_stats(1, "Clear CT", _cur_clear_ct_time_ms); |
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303 double misc_time_ms = pause_time_sec * MILLIUNITS - accounted_time_ms(); |
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304 print_stats(1, "Other", misc_time_ms); |
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305 if (_cur_verify_before_time_ms > 0.0) { |
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306 print_stats(2, "Verify Before", _cur_verify_before_time_ms); |
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307 } |
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308 print_stats(2, "Choose CSet", |
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309 (_recorded_young_cset_choice_time_ms + |
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310 _recorded_non_young_cset_choice_time_ms)); |
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311 print_stats(2, "Ref Proc", _cur_ref_proc_time_ms); |
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312 print_stats(2, "Ref Enq", _cur_ref_enq_time_ms); |
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313 print_stats(2, "Free CSet", |
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314 (_recorded_young_free_cset_time_ms + |
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315 _recorded_non_young_free_cset_time_ms)); |
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316 if (_cur_verify_after_time_ms > 0.0) { |
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317 print_stats(2, "Verify After", _cur_verify_after_time_ms); |
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318 } |
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319 } |