1 /*
2 * Copyright (c) 2012, 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_implementation/shared/gcHeapSummary.hpp"
27 #include "gc_implementation/shared/gcTimer.hpp"
28 #include "gc_implementation/shared/gcTrace.hpp"
29 #include "gc_implementation/shared/gcWhen.hpp"
30 #include "gc_implementation/shared/copyFailedInfo.hpp"
31 #include "runtime/os.hpp"
32 #include "trace/tracing.hpp"
33 #include "trace/traceBackend.hpp"
34 #if INCLUDE_ALL_GCS
35 #include "gc_implementation/g1/evacuationInfo.hpp"
36 #include "gc_implementation/g1/g1YCTypes.hpp"
37 #include "tracefiles/traceEventClasses.hpp"
38 #endif
39
40 // All GC dependencies against the trace framework is contained within this file.
41
42 typedef uintptr_t TraceAddress;
43
44 void GCTracer::send_garbage_collection_event() const {
45 EventGarbageCollection event(UNTIMED);
46 if (event.should_commit()) {
47 event.set_gcId(_shared_gc_info.gc_id().id());
48 event.set_name(_shared_gc_info.name());
49 event.set_cause((u2) _shared_gc_info.cause());
50 event.set_sumOfPauses(_shared_gc_info.sum_of_pauses());
51 event.set_longestPause(_shared_gc_info.longest_pause());
52 event.set_starttime(_shared_gc_info.start_timestamp());
53 event.set_endtime(_shared_gc_info.end_timestamp());
54 event.commit();
55 }
56 }
57
58 void GCTracer::send_reference_stats_event(ReferenceType type, size_t count) const {
59 EventGCReferenceStatistics e;
60 if (e.should_commit()) {
61 e.set_gcId(_shared_gc_info.gc_id().id());
62 e.set_type((u1)type);
63 e.set_count(count);
64 e.commit();
65 }
66 }
67
68 void GCTracer::send_metaspace_chunk_free_list_summary(GCWhen::Type when, Metaspace::MetadataType mdtype,
69 const MetaspaceChunkFreeListSummary& summary) const {
70 EventMetaspaceChunkFreeListSummary e;
71 if (e.should_commit()) {
72 e.set_gcId(_shared_gc_info.gc_id().id());
73 e.set_when(when);
74 e.set_metadataType(mdtype);
75
76 e.set_specializedChunks(summary.num_specialized_chunks());
77 e.set_specializedChunksTotalSize(summary.specialized_chunks_size_in_bytes());
78
79 e.set_smallChunks(summary.num_small_chunks());
80 e.set_smallChunksTotalSize(summary.small_chunks_size_in_bytes());
81
82 e.set_mediumChunks(summary.num_medium_chunks());
83 e.set_mediumChunksTotalSize(summary.medium_chunks_size_in_bytes());
84
85 e.set_humongousChunks(summary.num_humongous_chunks());
86 e.set_humongousChunksTotalSize(summary.humongous_chunks_size_in_bytes());
87
88 e.commit();
89 }
90 }
91
92 void ParallelOldTracer::send_parallel_old_event() const {
93 EventParallelOldGarbageCollection e(UNTIMED);
94 if (e.should_commit()) {
95 e.set_gcId(_shared_gc_info.gc_id().id());
96 e.set_densePrefix((TraceAddress)_parallel_old_gc_info.dense_prefix());
97 e.set_starttime(_shared_gc_info.start_timestamp());
98 e.set_endtime(_shared_gc_info.end_timestamp());
99 e.commit();
100 }
101 }
102
103 void YoungGCTracer::send_young_gc_event() const {
104 EventYoungGarbageCollection e(UNTIMED);
105 if (e.should_commit()) {
106 e.set_gcId(_shared_gc_info.gc_id().id());
107 e.set_tenuringThreshold(_tenuring_threshold);
108 e.set_starttime(_shared_gc_info.start_timestamp());
109 e.set_endtime(_shared_gc_info.end_timestamp());
110 e.commit();
111 }
112 }
113
114 bool YoungGCTracer::should_send_promotion_in_new_plab_event() const {
115 return EventPromoteObjectInNewPLAB::is_enabled();
116 }
117
118 bool YoungGCTracer::should_send_promotion_outside_plab_event() const {
119 return EventPromoteObjectOutsidePLAB::is_enabled();
120 }
121
122 void YoungGCTracer::send_promotion_in_new_plab_event(Klass* klass, size_t obj_size,
123 uint age, bool tenured,
124 size_t plab_size) const {
125
126 EventPromoteObjectInNewPLAB event;
127 if (event.should_commit()) {
128 event.set_gcId(_shared_gc_info.gc_id().id());
129 event.set_objectClass(klass);
130 event.set_objectSize(obj_size);
131 event.set_tenured(tenured);
132 event.set_tenuringAge(age);
133 event.set_plabSize(plab_size);
134 event.commit();
135 }
136 }
137
138 void YoungGCTracer::send_promotion_outside_plab_event(Klass* klass, size_t obj_size,
139 uint age, bool tenured) const {
140
141 EventPromoteObjectOutsidePLAB event;
142 if (event.should_commit()) {
143 event.set_gcId(_shared_gc_info.gc_id().id());
144 event.set_gcId(GCId::peek().id() - 1);
145 event.set_objectClass(klass);
146 event.set_objectSize(obj_size);
147 event.set_tenured(tenured);
148 event.set_tenuringAge(age);
149 event.commit();
150 }
151 }
152
153
154 void OldGCTracer::send_old_gc_event() const {
155 EventOldGarbageCollection e(UNTIMED);
156 if (e.should_commit()) {
157 e.set_gcId(_shared_gc_info.gc_id().id());
158 e.set_starttime(_shared_gc_info.start_timestamp());
159 e.set_endtime(_shared_gc_info.end_timestamp());
160 e.commit();
161 }
162 }
163
164 static TraceStructCopyFailed to_trace_struct(const CopyFailedInfo& cf_info) {
165 TraceStructCopyFailed failed_info;
166 failed_info.set_objectCount(cf_info.failed_count());
167 failed_info.set_firstSize(cf_info.first_size());
168 failed_info.set_smallestSize(cf_info.smallest_size());
169 failed_info.set_totalSize(cf_info.total_size());
170 return failed_info;
171 }
172
173 void YoungGCTracer::send_promotion_failed_event(const PromotionFailedInfo& pf_info) const {
174 EventPromotionFailed e;
175 if (e.should_commit()) {
176 e.set_gcId(_shared_gc_info.gc_id().id());
177 e.set_promotionFailed(to_trace_struct(pf_info));
178 e.set_thread(pf_info.thread()->thread_id());
179 e.commit();
180 }
181 }
182
183 // Common to CMS and G1
184 void OldGCTracer::send_concurrent_mode_failure_event() {
185 EventConcurrentModeFailure e;
186 if (e.should_commit()) {
187 e.set_gcId(_shared_gc_info.gc_id().id());
188 e.commit();
189 }
190 }
191
192 #if INCLUDE_ALL_GCS
193 void G1NewTracer::send_g1_young_gc_event() {
194 EventG1GarbageCollection e(UNTIMED);
195 if (e.should_commit()) {
196 e.set_gcId(_shared_gc_info.gc_id().id());
197 e.set_type(_g1_young_gc_info.type());
198 e.set_starttime(_shared_gc_info.start_timestamp());
199 e.set_endtime(_shared_gc_info.end_timestamp());
200 e.commit();
201 }
202 }
203
204 void G1MMUTracer::send_g1_mmu_event(double time_slice_ms, double gc_time_ms, double max_time_ms, bool gc_thread) {
205 EventG1MMU e;
206 if (e.should_commit()) {
207 if (gc_thread) {
208 e.set_gcId(G1CollectedHeap::heap()->gc_tracer_cm()->gc_id().id());
209 } else {
210 e.set_gcId(G1CollectedHeap::heap()->gc_tracer_stw()->gc_id().id());
211 }
212 e.set_timeSlice(time_slice_ms);
213 e.set_gcTime(gc_time_ms);
214 e.set_pauseTarget(max_time_ms);
215 e.commit();
216 }
217 }
218
219 void G1NewTracer::send_evacuation_info_event(EvacuationInfo* info) {
220 EventEvacuationInformation e;
221 if (e.should_commit()) {
222 e.set_gcId(_shared_gc_info.gc_id().id());
223 e.set_cSetRegions(info->collectionset_regions());
224 e.set_cSetUsedBefore(info->collectionset_used_before());
225 e.set_cSetUsedAfter(info->collectionset_used_after());
226 e.set_allocationRegions(info->allocation_regions());
227 e.set_allocationRegionsUsedBefore(info->alloc_regions_used_before());
228 e.set_allocationRegionsUsedAfter(info->alloc_regions_used_before() + info->bytes_copied());
229 e.set_bytesCopied(info->bytes_copied());
230 e.set_regionsFreed(info->regions_freed());
231 e.commit();
232 }
233 }
234
235 void G1NewTracer::send_evacuation_failed_event(const EvacuationFailedInfo& ef_info) const {
236 EventEvacuationFailed e;
237 if (e.should_commit()) {
238 e.set_gcId(_shared_gc_info.gc_id().id());
239 e.set_evacuationFailed(to_trace_struct(ef_info));
240 e.commit();
241 }
242 }
243
244 void G1NewTracer::send_basic_ihop_statistics(size_t threshold,
245 size_t target_occupancy,
246 size_t current_occupancy,
247 size_t last_allocation_size,
248 double last_allocation_duration,
249 double last_marking_length) {
250 EventG1BasicIHOP evt;
251 if (evt.should_commit()) {
252 evt.set_gcId(_shared_gc_info.gc_id().id());
253 evt.set_threshold(threshold);
254 evt.set_targetOccupancy(target_occupancy);
255 evt.set_thresholdPercentage(target_occupancy > 0 ? ((double)threshold / target_occupancy) : 0.0);
256 evt.set_currentOccupancy(current_occupancy);
257 evt.set_recentMutatorAllocationSize(last_allocation_size);
258 evt.set_recentMutatorDuration(last_allocation_duration * MILLIUNITS);
259 evt.set_recentAllocationRate(last_allocation_duration != 0.0 ? last_allocation_size / last_allocation_duration : 0.0);
260 evt.set_lastMarkingDuration(last_marking_length * MILLIUNITS);
261 evt.commit();
262 }
263 }
264 #endif
265
266 static TraceStructVirtualSpace to_trace_struct(const VirtualSpaceSummary& summary) {
267 TraceStructVirtualSpace space;
268 space.set_start((TraceAddress)summary.start());
269 space.set_committedEnd((TraceAddress)summary.committed_end());
270 space.set_committedSize(summary.committed_size());
271 space.set_reservedEnd((TraceAddress)summary.reserved_end());
272 space.set_reservedSize(summary.reserved_size());
273 return space;
274 }
275
276 static TraceStructObjectSpace to_trace_struct(const SpaceSummary& summary) {
277 TraceStructObjectSpace space;
278 space.set_start((TraceAddress)summary.start());
279 space.set_end((TraceAddress)summary.end());
280 space.set_used(summary.used());
281 space.set_size(summary.size());
282 return space;
283 }
284
285 class GCHeapSummaryEventSender : public GCHeapSummaryVisitor {
286 GCId _gc_id;
287 GCWhen::Type _when;
288 public:
289 GCHeapSummaryEventSender(GCId gc_id, GCWhen::Type when) : _gc_id(gc_id), _when(when) {}
290
291 void visit(const GCHeapSummary* heap_summary) const {
292 const VirtualSpaceSummary& heap_space = heap_summary->heap();
293
294 EventGCHeapSummary e;
295 if (e.should_commit()) {
296 e.set_gcId(_gc_id.id());
297 e.set_when((u1)_when);
298 e.set_heapSpace(to_trace_struct(heap_space));
299 e.set_heapUsed(heap_summary->used());
300 e.commit();
301 }
302 }
303
304 void visit(const G1HeapSummary* g1_heap_summary) const {
305 visit((GCHeapSummary*)g1_heap_summary);
306 EventG1HeapSummary e;
307 if (e.should_commit()) {
308 e.set_gcId(_gc_id.id());
309 e.set_when((u1)_when);
310 e.set_edenUsedSize(g1_heap_summary->edenUsed());
311 e.set_edenTotalSize(g1_heap_summary->edenCapacity());
312 e.set_survivorUsedSize(g1_heap_summary->survivorUsed());
313 e.set_numberOfRegions(g1_heap_summary->numberOfRegions());
314 e.commit();
315 }
316 }
317
318 void visit(const PSHeapSummary* ps_heap_summary) const {
319 visit((GCHeapSummary*)ps_heap_summary);
320
321 const VirtualSpaceSummary& old_summary = ps_heap_summary->old();
322 const SpaceSummary& old_space = ps_heap_summary->old_space();
323 const VirtualSpaceSummary& young_summary = ps_heap_summary->young();
324 const SpaceSummary& eden_space = ps_heap_summary->eden();
325 const SpaceSummary& from_space = ps_heap_summary->from();
326 const SpaceSummary& to_space = ps_heap_summary->to();
327
328 EventPSHeapSummary e;
329 if (e.should_commit()) {
330 e.set_gcId(_gc_id.id());
331 e.set_when((u1)_when);
332
333 e.set_oldSpace(to_trace_struct(ps_heap_summary->old()));
334 e.set_oldObjectSpace(to_trace_struct(ps_heap_summary->old_space()));
335 e.set_youngSpace(to_trace_struct(ps_heap_summary->young()));
336 e.set_edenSpace(to_trace_struct(ps_heap_summary->eden()));
337 e.set_fromSpace(to_trace_struct(ps_heap_summary->from()));
338 e.set_toSpace(to_trace_struct(ps_heap_summary->to()));
339 e.commit();
340 }
341 }
342 };
343
344 void GCTracer::send_gc_heap_summary_event(GCWhen::Type when, const GCHeapSummary& heap_summary) const {
345 GCHeapSummaryEventSender visitor(_shared_gc_info.gc_id(), when);
346 heap_summary.accept(&visitor);
347 }
348
349 static TraceStructMetaspaceSizes to_trace_struct(const MetaspaceSizes& sizes) {
350 TraceStructMetaspaceSizes meta_sizes;
351
352 meta_sizes.set_committed(sizes.committed());
353 meta_sizes.set_used(sizes.used());
354 meta_sizes.set_reserved(sizes.reserved());
355
356 return meta_sizes;
357 }
358
359 void GCTracer::send_meta_space_summary_event(GCWhen::Type when, const MetaspaceSummary& meta_space_summary) const {
360 EventMetaspaceSummary e;
361 if (e.should_commit()) {
362 e.set_gcId(_shared_gc_info.gc_id().id());
363 e.set_when((u1) when);
364 e.set_gcThreshold(meta_space_summary.capacity_until_GC());
365 e.set_metaspace(to_trace_struct(meta_space_summary.meta_space()));
366 e.set_dataSpace(to_trace_struct(meta_space_summary.data_space()));
367 e.set_classSpace(to_trace_struct(meta_space_summary.class_space()));
368 e.commit();
369 }
370 }
371
372 class PhaseSender : public PhaseVisitor {
373 GCId _gc_id;
374 public:
375 PhaseSender(GCId gc_id) : _gc_id(gc_id) {}
376
377 template<typename T>
378 void send_phase(PausePhase* pause) {
379 T event(UNTIMED);
380 if (event.should_commit()) {
381 event.set_gcId(_gc_id.id());
382 event.set_name(pause->name());
383 event.set_starttime(pause->start());
384 event.set_endtime(pause->end());
385 event.commit();
386 }
387 }
388
389 void visit(GCPhase* pause) { ShouldNotReachHere(); }
390 void visit(ConcurrentPhase* pause) { Unimplemented(); }
391 void visit(PausePhase* pause) {
392 assert(PhasesStack::PHASE_LEVELS == 5, "Need more event types");
393
394 switch (pause->level()) {
395 case 0: send_phase<EventGCPhasePause>(pause); break;
396 case 1: send_phase<EventGCPhasePauseLevel1>(pause); break;
397 case 2: send_phase<EventGCPhasePauseLevel2>(pause); break;
398 case 3: send_phase<EventGCPhasePauseLevel3>(pause); break;
399 default: /* Ignore sending this phase */ break;
400 }
401 }
402 };
403
404 void GCTracer::send_phase_events(TimePartitions* time_partitions) const {
405 PhaseSender phase_reporter(_shared_gc_info.gc_id());
406
407 TimePartitionPhasesIterator iter(time_partitions);
408 while (iter.has_next()) {
409 GCPhase* phase = iter.next();
410 phase->accept(&phase_reporter);
411 }
412 }