1 /*
2 * Copyright (c) 2012, 2015, 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/shared/copyFailedInfo.hpp"
27 #include "gc/shared/gcHeapSummary.hpp"
28 #include "gc/shared/gcTimer.hpp"
29 #include "gc/shared/gcTrace.hpp"
30 #include "gc/shared/gcWhen.hpp"
31 #include "runtime/os.hpp"
32 #include "trace/traceBackend.hpp"
33 #include "trace/tracing.hpp"
34 #include "utilities/macros.hpp"
35 #if INCLUDE_ALL_GCS
36 #include "gc/g1/evacuationInfo.hpp"
37 #include "gc/g1/g1YCTypes.hpp"
38 #include "tracefiles/traceEventClasses.hpp"
39 #endif
40
41 // All GC dependencies against the trace framework is contained within this file.
42
43 typedef uintptr_t TraceAddress;
44
45 void GCTracer::send_garbage_collection_event() const {
46 EventGCGarbageCollection event(UNTIMED);
47 if (event.should_commit()) {
48 event.set_gcId(GCId::current());
49 event.set_name(_shared_gc_info.name());
50 event.set_cause((u2) _shared_gc_info.cause());
51 event.set_sumOfPauses(_shared_gc_info.sum_of_pauses());
52 event.set_longestPause(_shared_gc_info.longest_pause());
53 event.set_starttime(_shared_gc_info.start_timestamp());
54 event.set_endtime(_shared_gc_info.end_timestamp());
55 event.commit();
56 }
57 }
58
59 void GCTracer::send_reference_stats_event(ReferenceType type, size_t count) const {
60 EventGCReferenceStatistics e;
61 if (e.should_commit()) {
62 e.set_gcId(GCId::current());
63 e.set_type((u1)type);
64 e.set_count(count);
65 e.commit();
66 }
67 }
68
69 void GCTracer::send_metaspace_chunk_free_list_summary(GCWhen::Type when, Metaspace::MetadataType mdtype,
70 const MetaspaceChunkFreeListSummary& summary) const {
71 EventMetaspaceChunkFreeListSummary e;
72 if (e.should_commit()) {
73 e.set_gcId(GCId::current());
74 e.set_when(when);
75 e.set_metadataType(mdtype);
76
77 e.set_specializedChunks(summary.num_specialized_chunks());
78 e.set_specializedChunksTotalSize(summary.specialized_chunks_size_in_bytes());
79
80 e.set_smallChunks(summary.num_small_chunks());
81 e.set_smallChunksTotalSize(summary.small_chunks_size_in_bytes());
82
83 e.set_mediumChunks(summary.num_medium_chunks());
84 e.set_mediumChunksTotalSize(summary.medium_chunks_size_in_bytes());
85
86 e.set_humongousChunks(summary.num_humongous_chunks());
87 e.set_humongousChunksTotalSize(summary.humongous_chunks_size_in_bytes());
88
89 e.commit();
90 }
91 }
92
93 void ParallelOldTracer::send_parallel_old_event() const {
94 EventGCParallelOld e(UNTIMED);
95 if (e.should_commit()) {
96 e.set_gcId(GCId::current());
97 e.set_densePrefix((TraceAddress)_parallel_old_gc_info.dense_prefix());
98 e.set_starttime(_shared_gc_info.start_timestamp());
99 e.set_endtime(_shared_gc_info.end_timestamp());
100 e.commit();
101 }
102 }
103
104 void YoungGCTracer::send_young_gc_event() const {
105 EventGCYoungGarbageCollection e(UNTIMED);
106 if (e.should_commit()) {
107 e.set_gcId(GCId::current());
108 e.set_tenuringThreshold(_tenuring_threshold);
109 e.set_starttime(_shared_gc_info.start_timestamp());
110 e.set_endtime(_shared_gc_info.end_timestamp());
111 e.commit();
112 }
113 }
114
115 bool YoungGCTracer::should_send_promotion_in_new_plab_event() const {
116 return EventPromoteObjectInNewPLAB::is_enabled();
117 }
118
119 bool YoungGCTracer::should_send_promotion_outside_plab_event() const {
120 return EventPromoteObjectOutsidePLAB::is_enabled();
121 }
122
123 void YoungGCTracer::send_promotion_in_new_plab_event(Klass* klass, size_t obj_size,
124 uint age, bool tenured,
125 size_t plab_size) const {
126
127 EventPromoteObjectInNewPLAB event;
128 if (event.should_commit()) {
129 event.set_gcId(GCId::current());
130 event.set_class(klass);
131 event.set_objectSize(obj_size);
132 event.set_tenured(tenured);
133 event.set_tenuringAge(age);
134 event.set_plabSize(plab_size);
135 event.commit();
136 }
137 }
138
139 void YoungGCTracer::send_promotion_outside_plab_event(Klass* klass, size_t obj_size,
140 uint age, bool tenured) const {
141
142 EventPromoteObjectOutsidePLAB event;
143 if (event.should_commit()) {
144 event.set_gcId(GCId::current());
145 event.set_class(klass);
146 event.set_objectSize(obj_size);
147 event.set_tenured(tenured);
148 event.set_tenuringAge(age);
149 event.commit();
150 }
151 }
152
153 void OldGCTracer::send_old_gc_event() const {
154 EventGCOldGarbageCollection e(UNTIMED);
155 if (e.should_commit()) {
156 e.set_gcId(GCId::current());
157 e.set_starttime(_shared_gc_info.start_timestamp());
158 e.set_endtime(_shared_gc_info.end_timestamp());
159 e.commit();
160 }
161 }
162
163 static TraceStructCopyFailed to_trace_struct(const CopyFailedInfo& cf_info) {
164 TraceStructCopyFailed failed_info;
165 failed_info.set_objectCount(cf_info.failed_count());
166 failed_info.set_firstSize(cf_info.first_size());
167 failed_info.set_smallestSize(cf_info.smallest_size());
168 failed_info.set_totalSize(cf_info.total_size());
169 return failed_info;
170 }
171
172 void YoungGCTracer::send_promotion_failed_event(const PromotionFailedInfo& pf_info) const {
173 EventPromotionFailed e;
174 if (e.should_commit()) {
175 e.set_gcId(GCId::current());
176 e.set_data(to_trace_struct(pf_info));
177 e.set_thread(pf_info.thread()->thread_id());
178 e.commit();
179 }
180 }
181
182 // Common to CMS and G1
183 void OldGCTracer::send_concurrent_mode_failure_event() {
184 EventConcurrentModeFailure e;
185 if (e.should_commit()) {
186 e.set_gcId(GCId::current());
187 e.commit();
188 }
189 }
190
191 #if INCLUDE_ALL_GCS
192 void G1NewTracer::send_g1_young_gc_event() {
193 EventGCG1GarbageCollection e(UNTIMED);
194 if (e.should_commit()) {
195 e.set_gcId(GCId::current());
196 e.set_type(_g1_young_gc_info.type());
197 e.set_starttime(_shared_gc_info.start_timestamp());
198 e.set_endtime(_shared_gc_info.end_timestamp());
199 e.commit();
200 }
201 }
202
203 void G1MMUTracer::send_g1_mmu_event(double timeSlice, double gcTime, double maxTime) {
204 EventGCG1MMU e;
205 if (e.should_commit()) {
206 e.set_gcId(GCId::current());
207 e.set_timeSlice(timeSlice);
208 e.set_gcTime(gcTime);
209 e.set_maxGcTime(maxTime);
210 e.commit();
211 }
212 }
213
214 void G1NewTracer::send_evacuation_info_event(EvacuationInfo* info) {
215 EventEvacuationInfo e;
216 if (e.should_commit()) {
217 e.set_gcId(GCId::current());
218 e.set_cSetRegions(info->collectionset_regions());
219 e.set_cSetUsedBefore(info->collectionset_used_before());
220 e.set_cSetUsedAfter(info->collectionset_used_after());
221 e.set_allocationRegions(info->allocation_regions());
222 e.set_allocRegionsUsedBefore(info->alloc_regions_used_before());
223 e.set_allocRegionsUsedAfter(info->alloc_regions_used_before() + info->bytes_copied());
224 e.set_bytesCopied(info->bytes_copied());
225 e.set_regionsFreed(info->regions_freed());
226 e.commit();
227 }
228 }
229
230 void G1NewTracer::send_evacuation_failed_event(const EvacuationFailedInfo& ef_info) const {
231 EventEvacuationFailed e;
232 if (e.should_commit()) {
233 e.set_gcId(GCId::current());
234 e.set_data(to_trace_struct(ef_info));
235 e.commit();
236 }
237 }
238
239 static TraceStructG1EvacStats create_g1_evacstats(unsigned gcid, const G1EvacSummary& summary) {
240 TraceStructG1EvacStats s;
241 s.set_gcId(gcid);
242 s.set_allocated(summary.allocated() * HeapWordSize);
243 s.set_wasted(summary.wasted() * HeapWordSize);
244 s.set_used(summary.used() * HeapWordSize);
245 s.set_undoWaste(summary.undo_wasted() * HeapWordSize);
246 s.set_regionEndWaste(summary.region_end_waste() * HeapWordSize);
247 s.set_regionsRefilled(summary.regions_filled());
248 s.set_directAllocated(summary.direct_allocated() * HeapWordSize);
249 s.set_failureUsed(summary.failure_used() * HeapWordSize);
250 s.set_failureWaste(summary.failure_waste() * HeapWordSize);
251 return s;
252 }
253
254 void G1NewTracer::send_young_evacuation_statistics(const G1EvacSummary& summary) const {
255 EventGCG1EvacuationYoungStatistics surv_evt;
256 if (surv_evt.should_commit()) {
257 surv_evt.set_stats(create_g1_evacstats(GCId::current(), summary));
258 surv_evt.commit();
259 }
260 }
261
262 void G1NewTracer::send_old_evacuation_statistics(const G1EvacSummary& summary) const {
263 EventGCG1EvacuationOldStatistics old_evt;
264 if (old_evt.should_commit()) {
265 old_evt.set_stats(create_g1_evacstats(GCId::current(), summary));
266 old_evt.commit();
267 }
268 }
269
270 void G1NewTracer::send_basic_ihop_statistics(size_t threshold,
271 size_t target_occupancy,
272 size_t current_occupancy,
273 size_t last_allocation_ize,
274 double last_allocation_duration,
275 double last_marking_length) {
276 EventGCG1BasicIHOP evt;
277 if (evt.should_commit()) {
278 evt.set_gcId(GCId::current());
279 evt.set_threshold(threshold);
280 evt.set_targetOccupancy(target_occupancy);
281 evt.set_thresholdPercentage(threshold * 100.0 / target_occupancy);
282 evt.set_currentOccupancy(current_occupancy);
283 evt.set_lastAllocationSize(last_allocation_ize);
284 evt.set_lastAllocationDuration(last_allocation_duration);
285 evt.set_lastAllocationRate(last_allocation_duration != 0.0 ? last_allocation_ize / last_allocation_duration : 0.0);
286 evt.set_lastMarkingLength(last_marking_length);
287 evt.commit();
288 }
289 }
290
291 void G1NewTracer::send_adaptive_ihop_statistics(size_t additional_buffer_size,
292 double predicted_allocation_rate,
293 double predicted_marking_length,
294 bool prediction_active) {
295 EventGCG1AdaptiveIHOP evt;
296 if (evt.should_commit()) {
297 evt.set_gcId(GCId::current());
298 evt.set_additionalBufferSize(additional_buffer_size);
299 evt.set_predictedAllocationRate(predicted_allocation_rate);
300 evt.set_predictedMarkingLength(predicted_marking_length);
301 evt.set_predictionActive(prediction_active);
302 evt.commit();
303 }
304 }
305
306 #endif
307
308 static TraceStructVirtualSpace to_trace_struct(const VirtualSpaceSummary& summary) {
309 TraceStructVirtualSpace space;
310 space.set_start((TraceAddress)summary.start());
311 space.set_committedEnd((TraceAddress)summary.committed_end());
312 space.set_committedSize(summary.committed_size());
313 space.set_reservedEnd((TraceAddress)summary.reserved_end());
314 space.set_reservedSize(summary.reserved_size());
315 return space;
316 }
317
318 static TraceStructObjectSpace to_trace_struct(const SpaceSummary& summary) {
319 TraceStructObjectSpace space;
320 space.set_start((TraceAddress)summary.start());
321 space.set_end((TraceAddress)summary.end());
322 space.set_used(summary.used());
323 space.set_size(summary.size());
324 return space;
325 }
326
327 class GCHeapSummaryEventSender : public GCHeapSummaryVisitor {
328 GCWhen::Type _when;
329 public:
330 GCHeapSummaryEventSender(GCWhen::Type when) : _when(when) {}
331
332 void visit(const GCHeapSummary* heap_summary) const {
333 const VirtualSpaceSummary& heap_space = heap_summary->heap();
334
335 EventGCHeapSummary e;
336 if (e.should_commit()) {
337 e.set_gcId(GCId::current());
338 e.set_when((u1)_when);
339 e.set_heapSpace(to_trace_struct(heap_space));
340 e.set_heapUsed(heap_summary->used());
341 e.commit();
342 }
343 }
344
345 void visit(const G1HeapSummary* g1_heap_summary) const {
346 visit((GCHeapSummary*)g1_heap_summary);
347
348 EventG1HeapSummary e;
349 if (e.should_commit()) {
350 e.set_gcId(GCId::current());
351 e.set_when((u1)_when);
352 e.set_edenUsedSize(g1_heap_summary->edenUsed());
353 e.set_edenTotalSize(g1_heap_summary->edenCapacity());
354 e.set_survivorUsedSize(g1_heap_summary->survivorUsed());
355 e.commit();
356 }
357 }
358
359 void visit(const PSHeapSummary* ps_heap_summary) const {
360 visit((GCHeapSummary*)ps_heap_summary);
361
362 const VirtualSpaceSummary& old_summary = ps_heap_summary->old();
363 const SpaceSummary& old_space = ps_heap_summary->old_space();
364 const VirtualSpaceSummary& young_summary = ps_heap_summary->young();
365 const SpaceSummary& eden_space = ps_heap_summary->eden();
366 const SpaceSummary& from_space = ps_heap_summary->from();
367 const SpaceSummary& to_space = ps_heap_summary->to();
368
369 EventPSHeapSummary e;
370 if (e.should_commit()) {
371 e.set_gcId(GCId::current());
372 e.set_when((u1)_when);
373
374 e.set_oldSpace(to_trace_struct(ps_heap_summary->old()));
375 e.set_oldObjectSpace(to_trace_struct(ps_heap_summary->old_space()));
376 e.set_youngSpace(to_trace_struct(ps_heap_summary->young()));
377 e.set_edenSpace(to_trace_struct(ps_heap_summary->eden()));
378 e.set_fromSpace(to_trace_struct(ps_heap_summary->from()));
379 e.set_toSpace(to_trace_struct(ps_heap_summary->to()));
380 e.commit();
381 }
382 }
383 };
384
385 void GCTracer::send_gc_heap_summary_event(GCWhen::Type when, const GCHeapSummary& heap_summary) const {
386 GCHeapSummaryEventSender visitor(when);
387 heap_summary.accept(&visitor);
388 }
389
390 static TraceStructMetaspaceSizes to_trace_struct(const MetaspaceSizes& sizes) {
391 TraceStructMetaspaceSizes meta_sizes;
392
393 meta_sizes.set_committed(sizes.committed());
394 meta_sizes.set_used(sizes.used());
395 meta_sizes.set_reserved(sizes.reserved());
396
397 return meta_sizes;
398 }
399
400 void GCTracer::send_meta_space_summary_event(GCWhen::Type when, const MetaspaceSummary& meta_space_summary) const {
401 EventMetaspaceSummary e;
402 if (e.should_commit()) {
403 e.set_gcId(GCId::current());
404 e.set_when((u1) when);
405 e.set_gcThreshold(meta_space_summary.capacity_until_GC());
406 e.set_metaspace(to_trace_struct(meta_space_summary.meta_space()));
407 e.set_dataSpace(to_trace_struct(meta_space_summary.data_space()));
408 e.set_classSpace(to_trace_struct(meta_space_summary.class_space()));
409 e.commit();
410 }
411 }
412
413 class PhaseSender : public PhaseVisitor {
414 public:
415 template<typename T>
416 void send_phase(PausePhase* pause) {
417 T event(UNTIMED);
418 if (event.should_commit()) {
419 event.set_gcId(GCId::current());
420 event.set_name(pause->name());
421 event.set_starttime(pause->start());
422 event.set_endtime(pause->end());
423 event.commit();
424 }
425 }
426
427 void visit(GCPhase* pause) { ShouldNotReachHere(); }
428 void visit(ConcurrentPhase* pause) { Unimplemented(); }
429 void visit(PausePhase* pause) {
430 assert(PhasesStack::PHASE_LEVELS == 5, "Need more event types");
431
432 switch (pause->level()) {
433 case 0: send_phase<EventGCPhasePause>(pause); break;
434 case 1: send_phase<EventGCPhasePauseLevel1>(pause); break;
435 case 2: send_phase<EventGCPhasePauseLevel2>(pause); break;
436 case 3: send_phase<EventGCPhasePauseLevel3>(pause); break;
437 default: /* Ignore sending this phase */ break;
438 }
439 }
440 };
441
442 void GCTracer::send_phase_events(TimePartitions* time_partitions) const {
443 PhaseSender phase_reporter;
444
445 TimePartitionPhasesIterator iter(time_partitions);
446 while (iter.has_next()) {
447 GCPhase* phase = iter.next();
448 phase->accept(&phase_reporter);
449 }
450 }