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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 #ifndef SHARE_VM_GC_IMPLEMENTATION_SHARED_GCTRACE_HPP
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26 #define SHARE_VM_GC_IMPLEMENTATION_SHARED_GCTRACE_HPP
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27
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28 #include "gc_interface/gcCause.hpp"
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29 #include "gc_interface/gcName.hpp"
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30 #include "gc_implementation/shared/gcWhen.hpp"
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31 #include "gc_implementation/shared/copyFailedInfo.hpp"
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32 #include "memory/allocation.hpp"
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33 #include "memory/klassInfoClosure.hpp"
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34 #include "memory/referenceType.hpp"
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35 #if INCLUDE_ALL_GCS
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36 #include "gc_implementation/g1/g1YCTypes.hpp"
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37 #endif
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38 #include "utilities/macros.hpp"
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39
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40 typedef uint GCId;
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41
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42 class EvacuationInfo;
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43 class GCHeapSummary;
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44 class MetaspaceSummary;
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45 class PSHeapSummary;
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46 class ReferenceProcessorStats;
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47 class TimePartitions;
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48 class BoolObjectClosure;
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49
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50 class SharedGCInfo VALUE_OBJ_CLASS_SPEC {
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51 static const jlong UNSET_TIMESTAMP = -1;
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52
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53 public:
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54 static const GCId UNSET_GCID = (GCId)-1;
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55
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56 private:
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57 GCId _id;
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58 GCName _name;
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59 GCCause::Cause _cause;
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60 jlong _start_timestamp;
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61 jlong _end_timestamp;
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62 jlong _sum_of_pauses;
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63 jlong _longest_pause;
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64
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65 public:
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66 SharedGCInfo(GCName name) : _id(UNSET_GCID), _name(name), _cause(GCCause::_last_gc_cause),
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67 _start_timestamp(UNSET_TIMESTAMP), _end_timestamp(UNSET_TIMESTAMP), _sum_of_pauses(0), _longest_pause(0) {}
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68
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69 void set_id(GCId id) { _id = id; }
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70 GCId id() const { return _id; }
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71
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72 void set_start_timestamp(jlong timestamp) { _start_timestamp = timestamp; }
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73 jlong start_timestamp() const { return _start_timestamp; }
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74
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75 void set_end_timestamp(jlong timestamp) { _end_timestamp = timestamp; }
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76 jlong end_timestamp() const { return _end_timestamp; }
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77
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78 void set_name(GCName name) { _name = name; }
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79 GCName name() const { return _name; }
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80
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81 void set_cause(GCCause::Cause cause) { _cause = cause; }
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82 GCCause::Cause cause() const { return _cause; }
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83
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84 void set_sum_of_pauses(jlong duration) { _sum_of_pauses = duration; }
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85 jlong sum_of_pauses() const { return _sum_of_pauses; }
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86
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87 void set_longest_pause(jlong duration) { _longest_pause = duration; }
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88 jlong longest_pause() const { return _longest_pause; }
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89 };
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90
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91 class ParallelOldGCInfo VALUE_OBJ_CLASS_SPEC {
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92 void* _dense_prefix;
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93 public:
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94 ParallelOldGCInfo() : _dense_prefix(NULL) {}
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95 void report_dense_prefix(void* addr) {
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96 _dense_prefix = addr;
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97 }
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98 void* dense_prefix() const { return _dense_prefix; }
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99 };
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100
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101 #if INCLUDE_ALL_GCS
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102
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103 class G1YoungGCInfo VALUE_OBJ_CLASS_SPEC {
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104 G1YCType _type;
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105 public:
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106 G1YoungGCInfo() : _type(G1YCTypeEndSentinel) {}
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107 void set_type(G1YCType type) {
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108 _type = type;
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109 }
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110 G1YCType type() const { return _type; }
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111 };
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112
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113 #endif // INCLUDE_ALL_GCS
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114
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115 class GCTracer : public ResourceObj {
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116 friend class ObjectCountEventSenderClosure;
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117 protected:
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118 SharedGCInfo _shared_gc_info;
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119
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120 public:
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121 void report_gc_start(GCCause::Cause cause, jlong timestamp);
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122 void report_gc_end(jlong timestamp, TimePartitions* time_partitions);
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123 void report_gc_heap_summary(GCWhen::Type when, const GCHeapSummary& heap_summary, const MetaspaceSummary& meta_space_summary) const;
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124 void report_gc_reference_stats(const ReferenceProcessorStats& rp) const;
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125 void report_object_count_after_gc(BoolObjectClosure* object_filter) NOT_SERVICES_RETURN;
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126
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127 bool has_reported_gc_start() const;
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128
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129 protected:
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130 GCTracer(GCName name) : _shared_gc_info(name) {}
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131 virtual void report_gc_start_impl(GCCause::Cause cause, jlong timestamp);
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132 virtual void report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions);
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133
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134 private:
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135 void send_garbage_collection_event() const;
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136 void send_gc_heap_summary_event(GCWhen::Type when, const GCHeapSummary& heap_summary) const;
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137 void send_meta_space_summary_event(GCWhen::Type when, const MetaspaceSummary& meta_space_summary) const;
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138 void send_reference_stats_event(ReferenceType type, size_t count) const;
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139 void send_phase_events(TimePartitions* time_partitions) const;
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140 void send_object_count_after_gc_event(Klass* klass, jlong count, julong total_size) const NOT_SERVICES_RETURN;
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141 bool should_send_object_count_after_gc_event() const;
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142 };
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143
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144 class ObjectCountEventSenderClosure : public KlassInfoClosure {
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145 GCTracer* _gc_tracer;
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146 const double _size_threshold_percentage;
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147 const size_t _total_size_in_words;
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148 public:
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149 ObjectCountEventSenderClosure(GCTracer* gc_tracer, size_t total_size_in_words) :
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150 _gc_tracer(gc_tracer),
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151 _size_threshold_percentage(ObjectCountCutOffPercent / 100),
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152 _total_size_in_words(total_size_in_words)
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153 {}
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154 virtual void do_cinfo(KlassInfoEntry* entry);
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155 protected:
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156 virtual void send_event(KlassInfoEntry* entry);
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157 private:
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158 bool should_send_event(KlassInfoEntry* entry) const;
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159 };
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160
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161 class YoungGCTracer : public GCTracer {
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162 static const uint UNSET_TENURING_THRESHOLD = (uint) -1;
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163
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164 uint _tenuring_threshold;
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165
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166 protected:
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167 YoungGCTracer(GCName name) : GCTracer(name), _tenuring_threshold(UNSET_TENURING_THRESHOLD) {}
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168 virtual void report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions);
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169
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170 public:
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171 void report_promotion_failed(const PromotionFailedInfo& pf_info);
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172 void report_tenuring_threshold(const uint tenuring_threshold);
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173
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174 private:
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175 void send_young_gc_event() const;
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176 void send_promotion_failed_event(const PromotionFailedInfo& pf_info) const;
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177 };
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178
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179 class OldGCTracer : public GCTracer {
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180 protected:
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181 OldGCTracer(GCName name) : GCTracer(name) {}
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182 virtual void report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions);
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183
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184 public:
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185 void report_concurrent_mode_failure();
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186
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187 private:
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188 void send_old_gc_event() const;
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189 void send_concurrent_mode_failure_event();
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190 };
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191
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192 class ParallelOldTracer : public OldGCTracer {
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193 ParallelOldGCInfo _parallel_old_gc_info;
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194
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195 public:
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196 ParallelOldTracer() : OldGCTracer(ParallelOld) {}
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197 void report_dense_prefix(void* dense_prefix);
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198
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199 protected:
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200 void report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions);
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201
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202 private:
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203 void send_parallel_old_event() const;
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204 };
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205
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206 class SerialOldTracer : public OldGCTracer {
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207 public:
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208 SerialOldTracer() : OldGCTracer(SerialOld) {}
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209 };
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210
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211 class ParallelScavengeTracer : public YoungGCTracer {
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212 public:
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213 ParallelScavengeTracer() : YoungGCTracer(ParallelScavenge) {}
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214 };
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215
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216 class DefNewTracer : public YoungGCTracer {
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217 public:
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218 DefNewTracer() : YoungGCTracer(DefNew) {}
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219 };
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220
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221 class ParNewTracer : public YoungGCTracer {
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222 public:
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223 ParNewTracer() : YoungGCTracer(ParNew) {}
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224 };
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225
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226 #if INCLUDE_ALL_GCS
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227 class G1NewTracer : public YoungGCTracer {
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228 G1YoungGCInfo _g1_young_gc_info;
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229
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230 public:
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231 G1NewTracer() : YoungGCTracer(G1New) {}
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232
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233 void report_yc_type(G1YCType type);
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234 void report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions);
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235 void report_evacuation_info(EvacuationInfo* info);
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236 void report_evacuation_failed(EvacuationFailedInfo& ef_info);
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237
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238 private:
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239 void send_g1_young_gc_event();
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240 void send_evacuation_info_event(EvacuationInfo* info);
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241 void send_evacuation_failed_event(const EvacuationFailedInfo& ef_info) const;
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242 };
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243 #endif
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244
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245 class CMSTracer : public OldGCTracer {
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246 public:
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247 CMSTracer() : OldGCTracer(ConcurrentMarkSweep) {}
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248 };
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249
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250 class G1OldTracer : public OldGCTracer {
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251 public:
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252 G1OldTracer() : OldGCTracer(G1Old) {}
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253 };
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254
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255 #endif // SHARE_VM_GC_IMPLEMENTATION_SHARED_GCTRACE_HPP
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