1 /*
2 * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "gc/g1/g1EvacuationInfo.hpp"
27 #include "gc/g1/g1HeapRegionTraceType.hpp"
28 #include "gc/g1/g1Trace.hpp"
29 #include "gc/g1/g1YCTypes.hpp"
30 #include "gc/shared/gcHeapSummary.hpp"
31 #include "jfr/jfrEvents.hpp"
32 #if INCLUDE_JFR
33 #include "jfr/metadata/jfrSerializer.hpp"
34 #endif
35
36 #if INCLUDE_JFR
37 class G1HeapRegionTypeConstant : public JfrSerializer {
38 public:
39 void serialize(JfrCheckpointWriter& writer) {
40 static const u4 nof_entries = G1HeapRegionTraceType::G1HeapRegionTypeEndSentinel;
41 writer.write_count(nof_entries);
42 for (u4 i = 0; i < nof_entries; ++i) {
43 writer.write_key(i);
44 writer.write(G1HeapRegionTraceType::to_string((G1HeapRegionTraceType::Type)i));
45 }
46 }
47 };
48
49 class G1YCTypeConstant : public JfrSerializer {
50 public:
51 void serialize(JfrCheckpointWriter& writer) {
52 static const u4 nof_entries = G1YCTypeEndSentinel;
53 writer.write_count(nof_entries);
54 for (u4 i = 0; i < nof_entries; ++i) {
55 writer.write_key(i);
56 writer.write(G1YCTypeHelper::to_string((G1YCType)i));
57 }
58 }
59 };
60
61 static void register_jfr_type_constants() {
62 JfrSerializer::register_serializer(TYPE_G1HEAPREGIONTYPE, true,
63 new G1HeapRegionTypeConstant());
64
65 JfrSerializer::register_serializer(TYPE_G1YCTYPE, true,
66 new G1YCTypeConstant());
67 }
68
69 #endif
70
71 void G1NewTracer::initialize() {
72 JFR_ONLY(register_jfr_type_constants());
73 }
74
75 void G1NewTracer::report_yc_type(G1YCType type) {
76 _g1_young_gc_info.set_type(type);
77 }
78
79 void G1NewTracer::report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions) {
80 YoungGCTracer::report_gc_end_impl(timestamp, time_partitions);
81 send_g1_young_gc_event();
82 }
83
84 void G1NewTracer::report_evacuation_info(G1EvacuationInfo* info) {
85 send_evacuation_info_event(info);
86 }
87
88 void G1NewTracer::report_evacuation_failed(EvacuationFailedInfo& ef_info) {
89 send_evacuation_failed_event(ef_info);
90 ef_info.reset();
91 }
92
93 void G1NewTracer::report_evacuation_statistics(const G1EvacSummary& young_summary, const G1EvacSummary& old_summary) const {
94 send_young_evacuation_statistics(young_summary);
95 send_old_evacuation_statistics(old_summary);
96 }
97
98 void G1NewTracer::report_basic_ihop_statistics(size_t threshold,
99 size_t target_ccupancy,
100 size_t current_occupancy,
101 size_t last_allocation_size,
102 double last_allocation_duration,
103 double last_marking_length) {
104 send_basic_ihop_statistics(threshold,
105 target_ccupancy,
106 current_occupancy,
107 last_allocation_size,
108 last_allocation_duration,
109 last_marking_length);
110 }
111
112 void G1NewTracer::report_adaptive_ihop_statistics(size_t threshold,
113 size_t internal_target_occupancy,
114 size_t current_occupancy,
115 size_t additional_buffer_size,
116 double predicted_allocation_rate,
117 double predicted_marking_length,
118 bool prediction_active) {
119 send_adaptive_ihop_statistics(threshold,
120 internal_target_occupancy,
121 additional_buffer_size,
122 current_occupancy,
123 predicted_allocation_rate,
124 predicted_marking_length,
125 prediction_active);
126 }
127
128 void G1NewTracer::send_g1_young_gc_event() {
129 EventG1GarbageCollection e(UNTIMED);
130 if (e.should_commit()) {
131 e.set_gcId(GCId::current());
132 e.set_type(_g1_young_gc_info.type());
133 e.set_starttime(_shared_gc_info.start_timestamp());
134 e.set_endtime(_shared_gc_info.end_timestamp());
135 e.commit();
136 }
137 }
138
139 void G1NewTracer::send_evacuation_info_event(G1EvacuationInfo* info) {
140 EventEvacuationInformation e;
141 if (e.should_commit()) {
142 e.set_gcId(GCId::current());
143 e.set_cSetRegions(info->collectionset_regions());
144 e.set_cSetUsedBefore(info->collectionset_used_before());
145 e.set_cSetUsedAfter(info->collectionset_used_after());
146 e.set_allocationRegions(info->allocation_regions());
147 e.set_allocationRegionsUsedBefore(info->alloc_regions_used_before());
148 e.set_allocationRegionsUsedAfter(info->alloc_regions_used_before() + info->bytes_used());
149 e.set_bytesCopied(info->bytes_used());
150 e.set_regionsFreed(info->regions_freed());
151 e.commit();
152 }
153 }
154
155 void G1NewTracer::send_evacuation_failed_event(const EvacuationFailedInfo& ef_info) const {
156 EventEvacuationFailed e;
157 if (e.should_commit()) {
158 // Create JFR structured failure data
159 JfrStructCopyFailed evac_failed;
160 evac_failed.set_objectCount(ef_info.failed_count());
161 evac_failed.set_firstSize(ef_info.first_size());
162 evac_failed.set_smallestSize(ef_info.smallest_size());
163 evac_failed.set_totalSize(ef_info.total_size());
164 // Add to the event
165 e.set_gcId(GCId::current());
166 e.set_evacuationFailed(evac_failed);
167 e.commit();
168 }
169 }
170
171 static JfrStructG1EvacuationStatistics
172 create_g1_evacstats(unsigned gcid, const G1EvacSummary& summary) {
173 JfrStructG1EvacuationStatistics s;
174 s.set_gcId(gcid);
175 s.set_allocated(summary.allocated() * HeapWordSize);
176 s.set_wasted(summary.wasted() * HeapWordSize);
177 s.set_used(summary.used() * HeapWordSize);
178 s.set_undoWaste(summary.undo_wasted() * HeapWordSize);
179 s.set_regionEndWaste(summary.region_end_waste() * HeapWordSize);
180 s.set_regionsRefilled(summary.regions_filled());
181 s.set_directAllocated(summary.direct_allocated() * HeapWordSize);
182 s.set_failureUsed(summary.failure_used() * HeapWordSize);
183 s.set_failureWaste(summary.failure_waste() * HeapWordSize);
184 return s;
185 }
186
187 void G1NewTracer::send_young_evacuation_statistics(const G1EvacSummary& summary) const {
188 EventG1EvacuationYoungStatistics surv_evt;
189 if (surv_evt.should_commit()) {
190 surv_evt.set_statistics(create_g1_evacstats(GCId::current(), summary));
191 surv_evt.commit();
192 }
193 }
194
195 void G1NewTracer::send_old_evacuation_statistics(const G1EvacSummary& summary) const {
196 EventG1EvacuationOldStatistics old_evt;
197 if (old_evt.should_commit()) {
198 old_evt.set_statistics(create_g1_evacstats(GCId::current(), summary));
199 old_evt.commit();
200 }
201 }
202
203 void G1NewTracer::send_basic_ihop_statistics(size_t threshold,
204 size_t target_occupancy,
205 size_t current_occupancy,
206 size_t last_allocation_size,
207 double last_allocation_duration,
208 double last_marking_length) {
209 EventG1BasicIHOP evt;
210 if (evt.should_commit()) {
211 evt.set_gcId(GCId::current());
212 evt.set_threshold(threshold);
213 evt.set_targetOccupancy(target_occupancy);
214 evt.set_thresholdPercentage(target_occupancy > 0 ? ((double)threshold / target_occupancy) : 0.0);
215 evt.set_currentOccupancy(current_occupancy);
216 evt.set_recentMutatorAllocationSize(last_allocation_size);
217 evt.set_recentMutatorDuration(last_allocation_duration * MILLIUNITS);
218 evt.set_recentAllocationRate(last_allocation_duration != 0.0 ? last_allocation_size / last_allocation_duration : 0.0);
219 evt.set_lastMarkingDuration(last_marking_length * MILLIUNITS);
220 evt.commit();
221 }
222 }
223
224 void G1NewTracer::send_adaptive_ihop_statistics(size_t threshold,
225 size_t internal_target_occupancy,
226 size_t current_occupancy,
227 size_t additional_buffer_size,
228 double predicted_allocation_rate,
229 double predicted_marking_length,
230 bool prediction_active) {
231 EventG1AdaptiveIHOP evt;
232 if (evt.should_commit()) {
233 evt.set_gcId(GCId::current());
234 evt.set_threshold(threshold);
235 evt.set_thresholdPercentage(internal_target_occupancy > 0 ? ((double)threshold / internal_target_occupancy) : 0.0);
236 evt.set_ihopTargetOccupancy(internal_target_occupancy);
237 evt.set_currentOccupancy(current_occupancy);
238 evt.set_additionalBufferSize(additional_buffer_size);
239 evt.set_predictedAllocationRate(predicted_allocation_rate);
240 evt.set_predictedMarkingDuration(predicted_marking_length * MILLIUNITS);
241 evt.set_predictionActive(prediction_active);
242 evt.commit();
243 }
244 }
245
246 void G1OldTracer::report_gc_start_impl(GCCause::Cause cause, const Ticks& timestamp) {
247 _shared_gc_info.set_start_timestamp(timestamp);
248 }
249
250 void G1OldTracer::set_gc_cause(GCCause::Cause cause) {
251 _shared_gc_info.set_cause(cause);
252 }
253
254 void G1MMUTracer::report_mmu(double time_slice_sec, double gc_time_sec, double max_time_sec) {
255 send_g1_mmu_event(time_slice_sec * MILLIUNITS,
256 gc_time_sec * MILLIUNITS,
257 max_time_sec * MILLIUNITS);
258 }
259
260 void G1MMUTracer::send_g1_mmu_event(double time_slice_ms, double gc_time_ms, double max_time_ms) {
261 EventG1MMU e;
262 if (e.should_commit()) {
263 e.set_gcId(GCId::current());
264 e.set_timeSlice(time_slice_ms);
265 e.set_gcTime(gc_time_ms);
266 e.set_pauseTarget(max_time_ms);
267 e.commit();
268 }
269 }