1 /*
2 * Copyright (c) 2013, 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 #ifndef SHARE_GC_G1_G1GCPHASETIMES_HPP
26 #define SHARE_GC_G1_G1GCPHASETIMES_HPP
27
28 #include "gc/shared/referenceProcessorPhaseTimes.hpp"
29 #include "gc/shared/weakProcessorPhaseTimes.hpp"
30 #include "jfr/jfrEvents.hpp"
31 #include "logging/logLevel.hpp"
32 #include "memory/allocation.hpp"
33 #include "utilities/macros.hpp"
34
35 class LineBuffer;
36 class G1ParScanThreadState;
37 class STWGCTimer;
38
39 template <class T> class WorkerDataArray;
40
41 class G1GCPhaseTimes : public CHeapObj<mtGC> {
42 uint _max_gc_threads;
43 jlong _gc_start_counter;
44 double _gc_pause_time_ms;
45
46 public:
47 enum GCParPhases {
48 GCWorkerStart,
49 ExtRootScan,
50 ThreadRoots,
51 UniverseRoots,
52 JNIRoots,
53 ObjectSynchronizerRoots,
54 ManagementRoots,
55 SystemDictionaryRoots,
56 CLDGRoots,
57 JVMTIRoots,
58 AOT_ONLY(AOTCodeRoots COMMA)
59 CMRefRoots,
60 MergeER,
61 MergeRS,
62 OptMergeRS,
63 MergeLB,
64 MergeHCC,
65 ScanHR,
66 OptScanHR,
67 CodeRoots,
68 OptCodeRoots,
69 ObjCopy,
70 OptObjCopy,
71 Termination,
72 OptTermination,
73 Other,
74 GCWorkerTotal,
75 GCWorkerEnd,
76 StringDedupQueueFixup,
77 StringDedupTableFixup,
78 RedirtyCards,
79 YoungFreeCSet,
80 NonYoungFreeCSet,
81 MergePSS,
82 GCParPhasesSentinel
83 };
84
85 static const GCParPhases ExtRootScanSubPhasesFirst = ThreadRoots;
86 static const GCParPhases ExtRootScanSubPhasesLast = CMRefRoots;
87
88 enum GCMergeRSWorkTimes {
89 MergeRSMergedSparse,
90 MergeRSMergedFine,
91 MergeRSMergedCoarse,
92 MergeRSDirtyCards
93 };
94
95 enum GCScanHRWorkItems {
96 ScanHRScannedCards,
97 ScanHRScannedBlocks,
98 ScanHRClaimedChunks,
99 ScanHRScannedOptRefs,
100 ScanHRUsedMemory
101 };
102
103 enum GCMergeHCCWorkItems {
104 MergeHCCDirtyCards,
105 MergeHCCSkippedCards
106 };
107
108 enum GCMergeLBWorkItems {
109 MergeLBDirtyCards,
110 MergeLBSkippedCards
111 };
112
113 enum GCMergePSSWorkItems {
114 MergePSSCopiedBytes,
115 MergePSSLABWasteBytes,
116 MergePSSLABUndoWasteBytes
117 };
118
119 private:
120 // Markers for grouping the phases in the GCPhases enum above
121 static const int GCMainParPhasesLast = GCWorkerEnd;
122
123 WorkerDataArray<double>* _gc_par_phases[GCParPhasesSentinel];
124
125 double _cur_collection_initial_evac_time_ms;
126 double _cur_optional_evac_time_ms;
127 double _cur_collection_code_root_fixup_time_ms;
128 double _cur_strong_code_root_purge_time_ms;
129
130 double _cur_evac_fail_recalc_used;
131 double _cur_evac_fail_remove_self_forwards;
132
133 double _cur_string_deduplication_time_ms;
134
135 double _cur_merge_heap_roots_time_ms;
136 double _cur_optional_merge_heap_roots_time_ms;
137
138 double _cur_prepare_merge_heap_roots_time_ms;
139 double _cur_optional_prepare_merge_heap_roots_time_ms;
140
141 double _cur_prepare_tlab_time_ms;
142 double _cur_resize_tlab_time_ms;
143
144 double _cur_derived_pointer_table_update_time_ms;
145
146 double _cur_clear_ct_time_ms;
147 double _cur_expand_heap_time_ms;
148 double _cur_ref_proc_time_ms;
149
150 double _cur_collection_start_sec;
151 double _root_region_scan_wait_time_ms;
152
153 double _external_accounted_time_ms;
154
155 double _recorded_prepare_heap_roots_time_ms;
156
157 double _recorded_clear_claimed_marks_time_ms;
158
159 double _recorded_young_cset_choice_time_ms;
160 double _recorded_non_young_cset_choice_time_ms;
161
162 double _recorded_redirty_logged_cards_time_ms;
163
164 double _recorded_preserve_cm_referents_time_ms;
165
166 double _recorded_merge_pss_time_ms;
167
168 double _recorded_start_new_cset_time_ms;
169
170 double _recorded_total_free_cset_time_ms;
171
172 double _recorded_serial_free_cset_time_ms;
173
174 double _cur_region_register_time;
175
176 double _cur_fast_reclaim_humongous_time_ms;
177 size_t _cur_fast_reclaim_humongous_total;
178 size_t _cur_fast_reclaim_humongous_candidates;
179 size_t _cur_fast_reclaim_humongous_reclaimed;
180
181 double _cur_verify_before_time_ms;
182 double _cur_verify_after_time_ms;
183
184 ReferenceProcessorPhaseTimes _ref_phase_times;
185 WeakProcessorPhaseTimes _weak_phase_times;
186
187 double worker_time(GCParPhases phase, uint worker);
188 void note_gc_end();
189 void reset();
190
191 template <class T>
192 void details(T* phase, const char* indent) const;
193
194 void log_work_items(WorkerDataArray<double>* phase, uint indent, outputStream* out) const;
195 void log_phase(WorkerDataArray<double>* phase, uint indent, outputStream* out, bool print_sum) const;
196 void debug_serial_phase(WorkerDataArray<double>* phase, uint extra_indent = 0) const;
197 void debug_phase(WorkerDataArray<double>* phase, uint extra_indent = 0) const;
198 void trace_phase(WorkerDataArray<double>* phase, bool print_sum = true) const;
199
200 void info_time(const char* name, double value) const;
201 void debug_time(const char* name, double value) const;
202 // This will print logs for both 'gc+phases' and 'gc+phases+ref'.
203 void debug_time_for_reference(const char* name, double value) const;
204 void trace_time(const char* name, double value) const;
205 void trace_count(const char* name, size_t value) const;
206
207 double print_pre_evacuate_collection_set() const;
208 double print_merge_heap_roots_time() const;
209 double print_evacuate_initial_collection_set() const;
210 double print_evacuate_optional_collection_set() const;
211 double print_post_evacuate_collection_set() const;
212 void print_other(double accounted_ms) const;
213
214 public:
215 G1GCPhaseTimes(STWGCTimer* gc_timer, uint max_gc_threads);
216 void note_gc_start();
217 void print();
218 static const char* phase_name(GCParPhases phase);
219
220 // record the time a phase took in seconds
221 void record_time_secs(GCParPhases phase, uint worker_id, double secs);
222
223 // add a number of seconds to a phase
224 void add_time_secs(GCParPhases phase, uint worker_id, double secs);
225
226 void record_or_add_time_secs(GCParPhases phase, uint worker_id, double secs);
227
228 double get_time_secs(GCParPhases phase, uint worker_id);
229
230 void record_thread_work_item(GCParPhases phase, uint worker_id, size_t count, uint index = 0);
231
232 void record_or_add_thread_work_item(GCParPhases phase, uint worker_id, size_t count, uint index = 0);
233
234 size_t get_thread_work_item(GCParPhases phase, uint worker_id, uint index = 0);
235
236 // return the average time for a phase in milliseconds
237 double average_time_ms(GCParPhases phase);
238
239 size_t sum_thread_work_items(GCParPhases phase, uint index = 0);
240
241 void record_prepare_tlab_time_ms(double ms) {
242 _cur_prepare_tlab_time_ms = ms;
243 }
244
245 void record_resize_tlab_time_ms(double ms) {
246 _cur_resize_tlab_time_ms = ms;
247 }
248
249 void record_derived_pointer_table_update_time(double ms) {
250 _cur_derived_pointer_table_update_time_ms = ms;
251 }
252
253 void record_clear_ct_time(double ms) {
254 _cur_clear_ct_time_ms = ms;
255 }
256
257 void record_expand_heap_time(double ms) {
258 _cur_expand_heap_time_ms = ms;
259 }
260
261 void record_initial_evac_time(double ms) {
262 _cur_collection_initial_evac_time_ms = ms;
263 }
264
265 void record_or_add_optional_evac_time(double ms) {
266 _cur_optional_evac_time_ms += ms;
267 }
268
269 void record_or_add_code_root_fixup_time(double ms) {
270 _cur_collection_code_root_fixup_time_ms += ms;
271 }
272
273 void record_strong_code_root_purge_time(double ms) {
274 _cur_strong_code_root_purge_time_ms = ms;
275 }
276
277 void record_merge_heap_roots_time(double ms) {
278 _cur_merge_heap_roots_time_ms += ms;
279 }
280
281 void record_or_add_optional_merge_heap_roots_time(double ms) {
282 _cur_optional_merge_heap_roots_time_ms += ms;
283 }
284
285 void record_prepare_merge_heap_roots_time(double ms) {
286 _cur_prepare_merge_heap_roots_time_ms += ms;
287 }
288
289 void record_or_add_optional_prepare_merge_heap_roots_time(double ms) {
290 _cur_optional_prepare_merge_heap_roots_time_ms += ms;
291 }
292
293 void record_evac_fail_recalc_used_time(double ms) {
294 _cur_evac_fail_recalc_used = ms;
295 }
296
297 void record_evac_fail_remove_self_forwards(double ms) {
298 _cur_evac_fail_remove_self_forwards = ms;
299 }
300
301 void record_string_deduplication_time(double ms) {
302 _cur_string_deduplication_time_ms = ms;
303 }
304
305 void record_ref_proc_time(double ms) {
306 _cur_ref_proc_time_ms = ms;
307 }
308
309 void record_root_region_scan_wait_time(double time_ms) {
310 _root_region_scan_wait_time_ms = time_ms;
311 }
312
313 void record_total_free_cset_time_ms(double time_ms) {
314 _recorded_total_free_cset_time_ms = time_ms;
315 }
316
317 void record_serial_free_cset_time_ms(double time_ms) {
318 _recorded_serial_free_cset_time_ms = time_ms;
319 }
320
321 void record_register_regions(double time_ms, size_t total, size_t candidates) {
322 _cur_region_register_time = time_ms;
323 _cur_fast_reclaim_humongous_total = total;
324 _cur_fast_reclaim_humongous_candidates = candidates;
325 }
326
327 void record_fast_reclaim_humongous_time_ms(double value, size_t reclaimed) {
328 _cur_fast_reclaim_humongous_time_ms = value;
329 _cur_fast_reclaim_humongous_reclaimed = reclaimed;
330 }
331
332 void record_young_cset_choice_time_ms(double time_ms) {
333 _recorded_young_cset_choice_time_ms = time_ms;
334 }
335
336 void record_non_young_cset_choice_time_ms(double time_ms) {
337 _recorded_non_young_cset_choice_time_ms = time_ms;
338 }
339
340 void record_redirty_logged_cards_time_ms(double time_ms) {
341 _recorded_redirty_logged_cards_time_ms = time_ms;
342 }
343
344 void record_preserve_cm_referents_time_ms(double time_ms) {
345 _recorded_preserve_cm_referents_time_ms = time_ms;
346 }
347
348 void record_start_new_cset_time_ms(double time_ms) {
349 _recorded_start_new_cset_time_ms = time_ms;
350 }
351
352 void record_cur_collection_start_sec(double time_ms) {
353 _cur_collection_start_sec = time_ms;
354 }
355
356 void record_verify_before_time_ms(double time_ms) {
357 _cur_verify_before_time_ms = time_ms;
358 }
359
360 void record_verify_after_time_ms(double time_ms) {
361 _cur_verify_after_time_ms = time_ms;
362 }
363
364 void inc_external_accounted_time_ms(double time_ms) {
365 _external_accounted_time_ms += time_ms;
366 }
367
368 void record_prepare_heap_roots_time_ms(double recorded_prepare_heap_roots_time_ms) {
369 _recorded_prepare_heap_roots_time_ms = recorded_prepare_heap_roots_time_ms;
370 }
371
372 void record_clear_claimed_marks_time_ms(double recorded_clear_claimed_marks_time_ms) {
373 _recorded_clear_claimed_marks_time_ms = recorded_clear_claimed_marks_time_ms;
374 }
375
376 double cur_collection_start_sec() {
377 return _cur_collection_start_sec;
378 }
379
380 double cur_collection_par_time_ms() {
381 return _cur_collection_initial_evac_time_ms + _cur_optional_evac_time_ms;
382 }
383
384 double cur_clear_ct_time_ms() {
385 return _cur_clear_ct_time_ms;
386 }
387
388 double cur_expand_heap_time_ms() {
389 return _cur_expand_heap_time_ms;
390 }
391
392 double root_region_scan_wait_time_ms() {
393 return _root_region_scan_wait_time_ms;
394 }
395
396 double young_cset_choice_time_ms() {
397 return _recorded_young_cset_choice_time_ms;
398 }
399
400 double total_free_cset_time_ms() {
401 return _recorded_total_free_cset_time_ms;
402 }
403
404 double non_young_cset_choice_time_ms() {
405 return _recorded_non_young_cset_choice_time_ms;
406 }
407
408 double fast_reclaim_humongous_time_ms() {
409 return _cur_fast_reclaim_humongous_time_ms;
410 }
411
412 size_t fast_reclaim_humongous_candidates() const {
413 return _cur_fast_reclaim_humongous_candidates;
414 }
415
416 ReferenceProcessorPhaseTimes* ref_phase_times() { return &_ref_phase_times; }
417
418 WeakProcessorPhaseTimes* weak_phase_times() { return &_weak_phase_times; }
419 };
420
421 class G1EvacPhaseWithTrimTimeTracker : public StackObj {
422 G1ParScanThreadState* _pss;
423 Ticks _start;
424
425 Tickspan& _total_time;
426 Tickspan& _trim_time;
427
428 bool _stopped;
429 public:
430 G1EvacPhaseWithTrimTimeTracker(G1ParScanThreadState* pss, Tickspan& total_time, Tickspan& trim_time);
431 ~G1EvacPhaseWithTrimTimeTracker();
432
433 void stop();
434 };
435
436 class G1GCParPhaseTimesTracker : public CHeapObj<mtGC> {
437 protected:
438 Ticks _start_time;
439 G1GCPhaseTimes::GCParPhases _phase;
440 G1GCPhaseTimes* _phase_times;
441 uint _worker_id;
442 EventGCPhaseParallel _event;
443 bool _must_record;
444
445 public:
446 G1GCParPhaseTimesTracker(G1GCPhaseTimes* phase_times, G1GCPhaseTimes::GCParPhases phase, uint worker_id, bool must_record = true);
447 virtual ~G1GCParPhaseTimesTracker();
448 };
449
450 class G1EvacPhaseTimesTracker : public G1GCParPhaseTimesTracker {
451 Tickspan _total_time;
452 Tickspan _trim_time;
453
454 G1EvacPhaseWithTrimTimeTracker _trim_tracker;
455 public:
456 G1EvacPhaseTimesTracker(G1GCPhaseTimes* phase_times, G1ParScanThreadState* pss, G1GCPhaseTimes::GCParPhases phase, uint worker_id);
457 virtual ~G1EvacPhaseTimesTracker();
458 };
459
460 #endif // SHARE_GC_G1_G1GCPHASETIMES_HPP