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1 /* |
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2 * Copyright (c) 2016, 2018, 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 "classfile/javaClasses.hpp" |
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27 #include "code/codeBlob.hpp" |
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28 #include "code/codeCache.hpp" |
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29 #include "gc_interface/gcCause.hpp" |
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30 #include "gc_interface/gcName.hpp" |
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31 #include "gc_implementation/shared/gcTrace.hpp" |
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32 #include "gc_implementation/shared/gcWhen.hpp" |
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33 #include "jfr/leakprofiler/checkpoint/objectSampleCheckpoint.hpp" |
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34 #include "jfr/leakprofiler/leakProfiler.hpp" |
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35 #include "jfr/recorder/checkpoint/jfrCheckpointManager.hpp" |
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36 #include "jfr/recorder/checkpoint/types/jfrType.hpp" |
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37 #include "jfr/recorder/jfrRecorder.hpp" |
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38 #include "jfr/recorder/checkpoint/types/jfrThreadGroup.hpp" |
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39 #include "jfr/recorder/checkpoint/types/jfrThreadState.hpp" |
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40 #include "jfr/recorder/checkpoint/types/jfrTypeSet.hpp" |
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41 #include "jfr/support/jfrThreadLocal.hpp" |
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42 #include "jfr/writers/jfrJavaEventWriter.hpp" |
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43 #include "memory/metaspaceGCThresholdUpdater.hpp" |
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44 #include "memory/referenceType.hpp" |
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45 #include "memory/universe.hpp" |
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46 #include "runtime/mutexLocker.hpp" |
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47 #include "runtime/osThread.hpp" |
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48 #include "runtime/safepoint.hpp" |
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49 #include "runtime/synchronizer.hpp" |
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50 #include "runtime/thread.inline.hpp" |
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51 #include "runtime/vm_operations.hpp" |
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52 |
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53 #ifdef COMPILER2 |
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54 #include "opto/compile.hpp" |
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55 #include "opto/node.hpp" |
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56 #endif |
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57 #if INCLUDE_ALL_GCS |
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58 //#include "gc_implementation/g1/g1HeapRegionTraceType.hpp" |
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59 #include "gc_implementation/g1/g1YCTypes.hpp" |
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60 #endif |
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61 |
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62 // Requires a ResourceMark for get_thread_name/as_utf8 |
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63 class JfrCheckpointThreadClosure : public ThreadClosure { |
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64 private: |
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65 JfrCheckpointWriter& _writer; |
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66 JfrCheckpointContext _ctx; |
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67 const intptr_t _count_position; |
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68 Thread* const _curthread; |
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69 u4 _count; |
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70 |
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71 public: |
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72 JfrCheckpointThreadClosure(JfrCheckpointWriter& writer) : _writer(writer), |
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73 _ctx(writer.context()), |
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74 _count_position(writer.reserve(sizeof(u4))), |
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75 _curthread(Thread::current()), |
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76 _count(0) { |
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77 } |
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78 |
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79 ~JfrCheckpointThreadClosure() { |
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80 if (_count == 0) { |
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81 // restore |
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82 _writer.set_context(_ctx); |
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83 return; |
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84 } |
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85 _writer.write_count(_count, _count_position); |
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86 } |
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87 |
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88 void do_thread(Thread* t); |
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89 }; |
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90 |
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91 // Requires a ResourceMark for get_thread_name/as_utf8 |
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92 void JfrCheckpointThreadClosure::do_thread(Thread* t) { |
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93 assert(t != NULL, "invariant"); |
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94 assert_locked_or_safepoint(Threads_lock); |
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95 const JfrThreadLocal* const tl = t->jfr_thread_local(); |
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96 assert(tl != NULL, "invariant"); |
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97 if (tl->is_dead()) { |
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98 return; |
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99 } |
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100 ++_count; |
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101 _writer.write_key(tl->thread_id()); |
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102 _writer.write(t->name()); |
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103 const OSThread* const os_thread = t->osthread(); |
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104 _writer.write<traceid>(os_thread != NULL ? os_thread->thread_id() : 0); |
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105 if (t->is_Java_thread()) { |
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106 JavaThread* const jt = (JavaThread*)t; |
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107 _writer.write(jt->name()); |
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108 _writer.write(java_lang_Thread::thread_id(jt->threadObj())); |
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109 _writer.write(JfrThreadGroup::thread_group_id(jt, _curthread)); |
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110 // since we are iterating threads during a safepoint, also issue notification |
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111 JfrJavaEventWriter::notify(jt); |
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112 return; |
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113 } |
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114 _writer.write((const char*)NULL); // java name |
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115 _writer.write((traceid)0); // java thread id |
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116 _writer.write((traceid)0); // java thread group |
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117 } |
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118 |
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119 void JfrThreadConstantSet::serialize(JfrCheckpointWriter& writer) { |
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120 assert(SafepointSynchronize::is_at_safepoint(), "invariant"); |
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121 JfrCheckpointThreadClosure tc(writer); |
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122 Threads::threads_do(&tc); |
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123 } |
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124 |
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125 void JfrThreadGroupConstant::serialize(JfrCheckpointWriter& writer) { |
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126 assert(SafepointSynchronize::is_at_safepoint(), "invariant"); |
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127 JfrThreadGroup::serialize(writer); |
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128 } |
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129 |
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130 static const char* flag_value_origin_to_string(Flag::Flags origin) { |
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131 switch (origin) { |
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132 case Flag::DEFAULT: return "Default"; |
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133 case Flag::COMMAND_LINE: return "Command line"; |
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134 case Flag::ENVIRON_VAR: return "Environment variable"; |
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135 case Flag::CONFIG_FILE: return "Config file"; |
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136 case Flag::MANAGEMENT: return "Management"; |
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137 case Flag::ERGONOMIC: return "Ergonomic"; |
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138 case Flag::ATTACH_ON_DEMAND: return "Attach on demand"; |
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139 case Flag::INTERNAL: return "Internal"; |
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140 default: ShouldNotReachHere(); return ""; |
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141 } |
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142 } |
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143 |
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144 void FlagValueOriginConstant::serialize(JfrCheckpointWriter& writer) { |
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145 static const u4 nof_entries = Flag::LAST_VALUE_ORIGIN + 1; |
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146 writer.write_count(nof_entries); |
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147 for (u4 i = 0; i < nof_entries; ++i) { |
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148 writer.write_key(i); |
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149 writer.write(flag_value_origin_to_string((Flag::Flags)i)); |
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150 } |
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151 } |
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152 |
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153 void MonitorInflateCauseConstant::serialize(JfrCheckpointWriter& writer) { |
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154 // XXX no such counters. implement? |
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155 // static const u4 nof_entries = ObjectSynchronizer::inflate_cause_nof; |
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156 // writer.write_count(nof_entries); |
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157 // for (u4 i = 0; i < nof_entries; ++i) { |
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158 // writer.write_key(i); |
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159 // writer.write(ObjectSynchronizer::inflate_cause_name((ObjectSynchronizer::InflateCause)i)); |
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160 // } |
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161 } |
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162 |
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163 void GCCauseConstant::serialize(JfrCheckpointWriter& writer) { |
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164 static const u4 nof_entries = GCCause::_last_gc_cause; |
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165 writer.write_count(nof_entries); |
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166 for (u4 i = 0; i < nof_entries; ++i) { |
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167 writer.write_key(i); |
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168 writer.write(GCCause::to_string((GCCause::Cause)i)); |
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169 } |
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170 } |
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171 |
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172 void GCNameConstant::serialize(JfrCheckpointWriter& writer) { |
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173 static const u4 nof_entries = GCNameEndSentinel; |
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174 writer.write_count(nof_entries); |
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175 for (u4 i = 0; i < nof_entries; ++i) { |
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176 writer.write_key(i); |
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177 writer.write(GCNameHelper::to_string((GCName)i)); |
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178 } |
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179 } |
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180 |
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181 void GCWhenConstant::serialize(JfrCheckpointWriter& writer) { |
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182 static const u4 nof_entries = GCWhen::GCWhenEndSentinel; |
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183 writer.write_count(nof_entries); |
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184 for (u4 i = 0; i < nof_entries; ++i) { |
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185 writer.write_key(i); |
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186 writer.write(GCWhen::to_string((GCWhen::Type)i)); |
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187 } |
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188 } |
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189 |
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190 void G1HeapRegionTypeConstant::serialize(JfrCheckpointWriter& writer) { |
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191 // XXX TODO? |
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192 // static const u4 nof_entries = G1HeapRegionTraceType::G1HeapRegionTypeEndSentinel; |
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193 // writer.write_count(nof_entries); |
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194 // for (u4 i = 0; i < nof_entries; ++i) { |
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195 // writer.write_key(i); |
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196 // writer.write(G1HeapRegionTraceType::to_string((G1HeapRegionTraceType::Type)i)); |
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197 // } |
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198 } |
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199 |
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200 void GCThresholdUpdaterConstant::serialize(JfrCheckpointWriter& writer) { |
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201 static const u4 nof_entries = MetaspaceGCThresholdUpdater::Last; |
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202 writer.write_count(nof_entries); |
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203 for (u4 i = 0; i < nof_entries; ++i) { |
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204 writer.write_key(i); |
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205 writer.write(MetaspaceGCThresholdUpdater::to_string((MetaspaceGCThresholdUpdater::Type)i)); |
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206 } |
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207 } |
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208 |
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209 void MetadataTypeConstant::serialize(JfrCheckpointWriter& writer) { |
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210 static const u4 nof_entries = Metaspace::MetadataTypeCount; |
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211 writer.write_count(nof_entries); |
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212 for (u4 i = 0; i < nof_entries; ++i) { |
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213 writer.write_key(i); |
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214 writer.write(Metaspace::metadata_type_name((Metaspace::MetadataType)i)); |
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215 } |
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216 } |
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217 |
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218 void MetaspaceObjectTypeConstant::serialize(JfrCheckpointWriter& writer) { |
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219 static const u4 nof_entries = MetaspaceObj::_number_of_types; |
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220 writer.write_count(nof_entries); |
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221 for (u4 i = 0; i < nof_entries; ++i) { |
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222 writer.write_key(i); |
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223 writer.write(MetaspaceObj::type_name((MetaspaceObj::Type)i)); |
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224 } |
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225 } |
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226 |
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227 void G1YCTypeConstant::serialize(JfrCheckpointWriter& writer) { |
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228 #if INCLUDE_ALL_GCS |
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229 static const u4 nof_entries = G1YCTypeEndSentinel; |
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230 writer.write_count(nof_entries); |
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231 for (u4 i = 0; i < nof_entries; ++i) { |
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232 writer.write_key(i); |
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233 writer.write(G1YCTypeHelper::to_string((G1YCType)i)); |
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234 } |
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235 #endif |
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236 } |
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237 |
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238 static const char* reference_type_to_string(ReferenceType rt) { |
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239 switch (rt) { |
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240 case REF_NONE: return "None reference"; |
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241 case REF_OTHER: return "Other reference"; |
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242 case REF_SOFT: return "Soft reference"; |
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243 case REF_WEAK: return "Weak reference"; |
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244 case REF_FINAL: return "Final reference"; |
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245 case REF_PHANTOM: return "Phantom reference"; |
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246 default: |
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247 ShouldNotReachHere(); |
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248 return NULL; |
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249 } |
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250 } |
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251 |
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252 void ReferenceTypeConstant::serialize(JfrCheckpointWriter& writer) { |
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253 static const u4 nof_entries = REF_PHANTOM + 1; |
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254 writer.write_count(nof_entries); |
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255 for (u4 i = 0; i < nof_entries; ++i) { |
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256 writer.write_key(i); |
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257 writer.write(reference_type_to_string((ReferenceType)i)); |
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258 } |
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259 } |
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260 |
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261 void NarrowOopModeConstant::serialize(JfrCheckpointWriter& writer) { |
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262 static const u4 nof_entries = Universe::HeapBasedNarrowOop + 1; |
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263 writer.write_count(nof_entries); |
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264 for (u4 i = 0; i < nof_entries; ++i) { |
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265 writer.write_key(i); |
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266 writer.write(Universe::narrow_oop_mode_to_string((Universe::NARROW_OOP_MODE)i)); |
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267 } |
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268 } |
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269 |
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270 void CompilerPhaseTypeConstant::serialize(JfrCheckpointWriter& writer) { |
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271 #ifdef COMPILER2 |
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272 static const u4 nof_entries = PHASE_NUM_TYPES; |
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273 writer.write_count(nof_entries); |
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274 for (u4 i = 0; i < nof_entries; ++i) { |
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275 writer.write_key(i); |
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276 writer.write(CompilerPhaseTypeHelper::to_string((CompilerPhaseType)i)); |
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277 } |
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278 #endif |
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279 } |
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280 |
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281 void CodeBlobTypeConstant::serialize(JfrCheckpointWriter& writer) { |
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282 // XXX no code blob types. need to send any stub value? |
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283 // static const u4 nof_entries = CodeBlobType::NumTypes; |
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284 // writer.write_count(nof_entries); |
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285 // for (u4 i = 0; i < nof_entries; ++i) { |
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286 // writer.write_key(i); |
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287 // writer.write(CodeCache::get_code_heap_name(i)); |
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288 // } |
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289 }; |
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290 |
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291 void VMOperationTypeConstant::serialize(JfrCheckpointWriter& writer) { |
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292 static const u4 nof_entries = VM_Operation::VMOp_Terminating; |
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293 writer.write_count(nof_entries); |
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294 for (u4 i = 0; i < nof_entries; ++i) { |
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295 writer.write_key(i); |
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296 writer.write(VM_Operation::name(VM_Operation::VMOp_Type(i))); |
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297 } |
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298 } |
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299 |
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300 class TypeSetSerialization { |
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301 private: |
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302 bool _class_unload; |
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303 public: |
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304 explicit TypeSetSerialization(bool class_unload) : _class_unload(class_unload) {} |
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305 void write(JfrCheckpointWriter& writer, JfrCheckpointWriter* leakp_writer) { |
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306 JfrTypeSet::serialize(&writer, leakp_writer, _class_unload); |
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307 } |
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308 }; |
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309 |
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310 void ClassUnloadTypeSet::serialize(JfrCheckpointWriter& writer) { |
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311 TypeSetSerialization type_set(true); |
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312 if (LeakProfiler::is_running()) { |
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313 JfrCheckpointWriter leakp_writer(false, true, Thread::current()); |
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314 type_set.write(writer, &leakp_writer); |
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315 ObjectSampleCheckpoint::install(leakp_writer, true, true); |
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316 return; |
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317 } |
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318 type_set.write(writer, NULL); |
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319 }; |
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320 |
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321 void TypeSet::serialize(JfrCheckpointWriter& writer) { |
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322 TypeSetSerialization type_set(false); |
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323 if (LeakProfiler::is_suspended()) { |
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324 JfrCheckpointWriter leakp_writer(false, true, Thread::current()); |
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325 type_set.write(writer, &leakp_writer); |
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326 ObjectSampleCheckpoint::install(leakp_writer, false, true); |
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327 return; |
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328 } |
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329 type_set.write(writer, NULL); |
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330 }; |
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331 |
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332 void ThreadStateConstant::serialize(JfrCheckpointWriter& writer) { |
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333 JfrThreadState::serialize(writer); |
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334 } |
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335 |
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336 void JfrThreadConstant::serialize(JfrCheckpointWriter& writer) { |
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337 assert(_thread != NULL, "invariant"); |
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338 assert(_thread == Thread::current(), "invariant"); |
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339 assert(_thread->is_Java_thread(), "invariant"); |
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340 assert(!_thread->jfr_thread_local()->has_thread_checkpoint(), "invariant"); |
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341 ResourceMark rm(_thread); |
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342 const oop threadObj = _thread->threadObj(); |
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343 assert(threadObj != NULL, "invariant"); |
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344 const u8 java_lang_thread_id = java_lang_Thread::thread_id(threadObj); |
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345 const char* const thread_name = _thread->name(); |
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346 const traceid thread_group_id = JfrThreadGroup::thread_group_id(_thread); |
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347 writer.write_count(1); |
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348 writer.write_key(_thread->jfr_thread_local()->thread_id()); |
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349 writer.write(thread_name); |
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350 writer.write((traceid)_thread->osthread()->thread_id()); |
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351 writer.write(thread_name); |
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352 writer.write(java_lang_thread_id); |
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353 writer.write(thread_group_id); |
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354 JfrThreadGroup::serialize(&writer, thread_group_id); |
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355 } |