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10405
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1 /*
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2 * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 *
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23 */
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24
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25 #include "precompiled.hpp"
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26 #include "gc_implementation/shared/gcHeapSummary.hpp"
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27 #include "gc_implementation/shared/gcTimer.hpp"
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28 #include "gc_implementation/shared/gcTrace.hpp"
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29 #include "gc_implementation/shared/copyFailedInfo.hpp"
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30 #include "memory/heapInspection.hpp"
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31 #include "memory/referenceProcessorStats.hpp"
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32 #include "utilities/globalDefinitions.hpp"
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33
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34 #if INCLUDE_ALL_GCS
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35 #include "gc_implementation/g1/evacuationInfo.hpp"
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36 #endif
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37
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38 #define assert_unset_gc_id() assert(_shared_gc_info.id() == SharedGCInfo::UNSET_GCID, "GC already started?")
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39 #define assert_set_gc_id() assert(_shared_gc_info.id() != SharedGCInfo::UNSET_GCID, "GC not started?")
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40
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41 static jlong GCTracer_next_gc_id = 0;
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42 static GCId create_new_gc_id() {
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43 return GCTracer_next_gc_id++;
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44 }
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45
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46 void GCTracer::report_gc_start_impl(GCCause::Cause cause, jlong timestamp) {
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47 assert_unset_gc_id();
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48
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49 GCId gc_id = create_new_gc_id();
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50 _shared_gc_info.set_id(gc_id);
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51 _shared_gc_info.set_cause(cause);
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52 _shared_gc_info.set_start_timestamp(timestamp);
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53 }
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54
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55 void GCTracer::report_gc_start(GCCause::Cause cause, jlong timestamp) {
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56 assert_unset_gc_id();
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57
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58 report_gc_start_impl(cause, timestamp);
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59 }
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60
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61 bool GCTracer::has_reported_gc_start() const {
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62 return _shared_gc_info.id() != SharedGCInfo::UNSET_GCID;
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63 }
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64
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65 void GCTracer::report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions) {
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66 assert_set_gc_id();
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67
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68 _shared_gc_info.set_sum_of_pauses(time_partitions->sum_of_pauses());
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69 _shared_gc_info.set_longest_pause(time_partitions->longest_pause());
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70 _shared_gc_info.set_end_timestamp(timestamp);
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71
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72 send_phase_events(time_partitions);
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73 send_garbage_collection_event();
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74 }
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75
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76 void GCTracer::report_gc_end(jlong timestamp, TimePartitions* time_partitions) {
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77 assert_set_gc_id();
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78
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79 report_gc_end_impl(timestamp, time_partitions);
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80
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81 _shared_gc_info.set_id(SharedGCInfo::UNSET_GCID);
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82 }
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83
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84 void GCTracer::report_gc_reference_stats(const ReferenceProcessorStats& rps) const {
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85 assert_set_gc_id();
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86
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87 send_reference_stats_event(REF_SOFT, rps.soft_count());
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88 send_reference_stats_event(REF_WEAK, rps.weak_count());
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89 send_reference_stats_event(REF_FINAL, rps.final_count());
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90 send_reference_stats_event(REF_PHANTOM, rps.phantom_count());
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91 }
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92
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93 #if INCLUDE_SERVICES
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94 void ObjectCountEventSenderClosure::do_cinfo(KlassInfoEntry* entry) {
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95 if (should_send_event(entry)) {
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96 send_event(entry);
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97 }
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98 }
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99
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100 void ObjectCountEventSenderClosure::send_event(KlassInfoEntry* entry) {
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101 _gc_tracer->send_object_count_after_gc_event(entry->klass(), entry->count(),
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102 entry->words() * BytesPerWord);
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103 }
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104
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105 bool ObjectCountEventSenderClosure::should_send_event(KlassInfoEntry* entry) const {
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106 double percentage_of_heap = ((double) entry->words()) / _total_size_in_words;
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107 return percentage_of_heap > _size_threshold_percentage;
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108 }
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109
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110 void GCTracer::report_object_count_after_gc(BoolObjectClosure* is_alive_cl) {
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111 assert_set_gc_id();
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112
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113 if (should_send_object_count_after_gc_event()) {
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114 ResourceMark rm;
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115
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116 KlassInfoTable cit(false);
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117 if (!cit.allocation_failed()) {
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118 HeapInspection hi(false, false, false, NULL);
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119 hi.populate_table(&cit, is_alive_cl);
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120
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121 ObjectCountEventSenderClosure event_sender(this, cit.size_of_instances_in_words());
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122 cit.iterate(&event_sender);
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123 }
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124 }
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125 }
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126 #endif
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127
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128 void GCTracer::report_gc_heap_summary(GCWhen::Type when, const GCHeapSummary& heap_summary, const MetaspaceSummary& meta_space_summary) const {
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129 assert_set_gc_id();
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130
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131 send_gc_heap_summary_event(when, heap_summary);
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132 send_meta_space_summary_event(when, meta_space_summary);
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133 }
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134
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135 void YoungGCTracer::report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions) {
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136 assert_set_gc_id();
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137 assert(_tenuring_threshold != UNSET_TENURING_THRESHOLD, "Tenuring threshold has not been reported");
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138
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139 GCTracer::report_gc_end_impl(timestamp, time_partitions);
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140 send_young_gc_event();
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141
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142 _tenuring_threshold = UNSET_TENURING_THRESHOLD;
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143 }
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144
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145 void YoungGCTracer::report_promotion_failed(const PromotionFailedInfo& pf_info) {
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146 assert_set_gc_id();
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147
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148 send_promotion_failed_event(pf_info);
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149 }
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150
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151 void YoungGCTracer::report_tenuring_threshold(const uint tenuring_threshold) {
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152 _tenuring_threshold = tenuring_threshold;
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153 }
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154
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155 void OldGCTracer::report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions) {
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156 assert_set_gc_id();
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157
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158 GCTracer::report_gc_end_impl(timestamp, time_partitions);
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159 send_old_gc_event();
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160 }
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161
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162 void ParallelOldTracer::report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions) {
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163 assert_set_gc_id();
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164
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165 OldGCTracer::report_gc_end_impl(timestamp, time_partitions);
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166 send_parallel_old_event();
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167 }
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168
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169 void ParallelOldTracer::report_dense_prefix(void* dense_prefix) {
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170 assert_set_gc_id();
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171
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172 _parallel_old_gc_info.report_dense_prefix(dense_prefix);
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173 }
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174
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175 void OldGCTracer::report_concurrent_mode_failure() {
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176 assert_set_gc_id();
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177
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178 send_concurrent_mode_failure_event();
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179 }
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180
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181 #if INCLUDE_ALL_GCS
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182 void G1NewTracer::report_yc_type(G1YCType type) {
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183 assert_set_gc_id();
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184
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185 _g1_young_gc_info.set_type(type);
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186 }
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187
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188 void G1NewTracer::report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions) {
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189 assert_set_gc_id();
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190
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191 YoungGCTracer::report_gc_end_impl(timestamp, time_partitions);
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192 send_g1_young_gc_event();
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193 }
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194
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195 void G1NewTracer::report_evacuation_info(EvacuationInfo* info) {
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196 assert_set_gc_id();
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197
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198 send_evacuation_info_event(info);
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199 }
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200
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201 void G1NewTracer::report_evacuation_failed(EvacuationFailedInfo& ef_info) {
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202 assert_set_gc_id();
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203
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204 send_evacuation_failed_event(ef_info);
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205 ef_info.reset();
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206 }
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207 #endif
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