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 CMRefRoots,
59 WaitForStrongCLD,
60 WeakCLDRoots,
61 SATBFiltering,
62 UpdateRS,
63 ScanHCC,
64 ScanRS,
65 OptScanRS,
66 CodeRoots,
67 #if INCLUDE_AOT
68 AOTCodeRoots,
69 #endif
70 ObjCopy,
71 OptObjCopy,
72 Termination,
73 Other,
74 GCWorkerTotal,
75 GCWorkerEnd,
76 StringDedupQueueFixup,
77 StringDedupTableFixup,
78 RedirtyCards,
79 YoungFreeCSet,
80 NonYoungFreeCSet,
81 GCParPhasesSentinel
82 };
83
84 enum GCScanRSWorkItems {
85 ScanRSScannedCards,
86 ScanRSClaimedCards,
87 ScanRSSkippedCards
88 };
89
90 enum GCUpdateRSWorkItems {
91 UpdateRSProcessedBuffers,
92 UpdateRSScannedCards,
93 UpdateRSSkippedCards
94 };
95
96 enum GCOptCSetWorkItems {
97 OptCSetScannedCards,
98 OptCSetClaimedCards,
99 OptCSetSkippedCards,
100 OptCSetUsedMemory
101 };
102
103 private:
104 // Markers for grouping the phases in the GCPhases enum above
105 static const int GCMainParPhasesLast = GCWorkerEnd;
106
107 WorkerDataArray<double>* _gc_par_phases[GCParPhasesSentinel];
108
109 WorkerDataArray<size_t>* _update_rs_processed_buffers;
110 WorkerDataArray<size_t>* _update_rs_scanned_cards;
111 WorkerDataArray<size_t>* _update_rs_skipped_cards;
112
113 WorkerDataArray<size_t>* _scan_rs_scanned_cards;
114 WorkerDataArray<size_t>* _scan_rs_claimed_cards;
115 WorkerDataArray<size_t>* _scan_rs_skipped_cards;
116
117 WorkerDataArray<size_t>* _opt_cset_scanned_cards;
118 WorkerDataArray<size_t>* _opt_cset_claimed_cards;
119 WorkerDataArray<size_t>* _opt_cset_skipped_cards;
120 WorkerDataArray<size_t>* _opt_cset_used_memory;
121
122 WorkerDataArray<size_t>* _termination_attempts;
123
124 WorkerDataArray<size_t>* _redirtied_cards;
125
126 double _cur_collection_par_time_ms;
127 double _cur_optional_evac_ms;
128 double _cur_collection_code_root_fixup_time_ms;
129 double _cur_strong_code_root_purge_time_ms;
130
131 double _cur_evac_fail_recalc_used;
132 double _cur_evac_fail_remove_self_forwards;
133
134 double _cur_string_deduplication_time_ms;
135
136 double _cur_prepare_tlab_time_ms;
137 double _cur_resize_tlab_time_ms;
138
139 double _cur_derived_pointer_table_update_time_ms;
140
141 double _cur_clear_ct_time_ms;
142 double _cur_expand_heap_time_ms;
143 double _cur_ref_proc_time_ms;
144
145 double _cur_collection_start_sec;
146 double _root_region_scan_wait_time_ms;
147
148 double _external_accounted_time_ms;
149
150 double _recorded_clear_claimed_marks_time_ms;
151
152 double _recorded_young_cset_choice_time_ms;
153 double _recorded_non_young_cset_choice_time_ms;
154
155 double _recorded_redirty_logged_cards_time_ms;
156
157 double _recorded_preserve_cm_referents_time_ms;
158
159 double _recorded_merge_pss_time_ms;
160
161 double _recorded_start_new_cset_time_ms;
162
163 double _recorded_total_free_cset_time_ms;
164
165 double _recorded_serial_free_cset_time_ms;
166
167 double _cur_fast_reclaim_humongous_time_ms;
168 double _cur_fast_reclaim_humongous_register_time_ms;
169 size_t _cur_fast_reclaim_humongous_total;
170 size_t _cur_fast_reclaim_humongous_candidates;
171 size_t _cur_fast_reclaim_humongous_reclaimed;
172
173 double _cur_verify_before_time_ms;
174 double _cur_verify_after_time_ms;
175
176 ReferenceProcessorPhaseTimes _ref_phase_times;
177 WeakProcessorPhaseTimes _weak_phase_times;
178
179 double worker_time(GCParPhases phase, uint worker);
180 void note_gc_end();
181 void reset();
182
183 template <class T>
184 void details(T* phase, const char* indent) const;
185
186 void log_phase(WorkerDataArray<double>* phase, uint indent, outputStream* out, bool print_sum) const;
187 void debug_phase(WorkerDataArray<double>* phase, uint extra_indent = 0) const;
188 void trace_phase(WorkerDataArray<double>* phase, bool print_sum = true) const;
189
190 void info_time(const char* name, double value) const;
191 void debug_time(const char* name, double value) const;
192 // This will print logs for both 'gc+phases' and 'gc+phases+ref'.
193 void debug_time_for_reference(const char* name, double value) const;
194 void trace_time(const char* name, double value) const;
195 void trace_count(const char* name, size_t value) const;
196
197 double print_pre_evacuate_collection_set() const;
198 double print_evacuate_collection_set() const;
199 double print_evacuate_optional_collection_set() const;
200 double print_post_evacuate_collection_set() const;
201 void print_other(double accounted_ms) const;
202
203 public:
204 G1GCPhaseTimes(STWGCTimer* gc_timer, uint max_gc_threads);
205 void note_gc_start();
206 void print();
207 static const char* phase_name(GCParPhases phase);
208
209 // record the time a phase took in seconds
210 void record_time_secs(GCParPhases phase, uint worker_i, double secs);
211
212 // add a number of seconds to a phase
213 void add_time_secs(GCParPhases phase, uint worker_i, double secs);
214
215 void record_or_add_time_secs(GCParPhases phase, uint worker_i, double secs);
216
217 void record_thread_work_item(GCParPhases phase, uint worker_i, size_t count, uint index = 0);
218
219 void record_or_add_thread_work_item(GCParPhases phase, uint worker_i, size_t count, uint index = 0);
220
221 // return the average time for a phase in milliseconds
222 double average_time_ms(GCParPhases phase);
223
224 size_t sum_thread_work_items(GCParPhases phase, uint index = 0);
225
226 public:
227
228 void record_prepare_tlab_time_ms(double ms) {
229 _cur_prepare_tlab_time_ms = ms;
230 }
231
232 void record_resize_tlab_time_ms(double ms) {
233 _cur_resize_tlab_time_ms = ms;
234 }
235
236 void record_derived_pointer_table_update_time(double ms) {
237 _cur_derived_pointer_table_update_time_ms = ms;
238 }
239
240 void record_clear_ct_time(double ms) {
241 _cur_clear_ct_time_ms = ms;
242 }
243
244 void record_expand_heap_time(double ms) {
245 _cur_expand_heap_time_ms = ms;
246 }
247
248 void record_par_time(double ms) {
249 _cur_collection_par_time_ms = ms;
250 }
251
252 void record_optional_evacuation(double ms) {
253 _cur_optional_evac_ms = ms;
254 }
255
256 void record_code_root_fixup_time(double ms) {
257 _cur_collection_code_root_fixup_time_ms = ms;
258 }
259
260 void record_strong_code_root_purge_time(double ms) {
261 _cur_strong_code_root_purge_time_ms = ms;
262 }
263
264 void record_evac_fail_recalc_used_time(double ms) {
265 _cur_evac_fail_recalc_used = ms;
266 }
267
268 void record_evac_fail_remove_self_forwards(double ms) {
269 _cur_evac_fail_remove_self_forwards = ms;
270 }
271
272 void record_string_deduplication_time(double ms) {
273 _cur_string_deduplication_time_ms = ms;
274 }
275
276 void record_ref_proc_time(double ms) {
277 _cur_ref_proc_time_ms = ms;
278 }
279
280 void record_root_region_scan_wait_time(double time_ms) {
281 _root_region_scan_wait_time_ms = time_ms;
282 }
283
284 void record_total_free_cset_time_ms(double time_ms) {
285 _recorded_total_free_cset_time_ms = time_ms;
286 }
287
288 void record_serial_free_cset_time_ms(double time_ms) {
289 _recorded_serial_free_cset_time_ms = time_ms;
290 }
291
292 void record_fast_reclaim_humongous_stats(double time_ms, size_t total, size_t candidates) {
293 _cur_fast_reclaim_humongous_register_time_ms = time_ms;
294 _cur_fast_reclaim_humongous_total = total;
295 _cur_fast_reclaim_humongous_candidates = candidates;
296 }
297
298 void record_fast_reclaim_humongous_time_ms(double value, size_t reclaimed) {
299 _cur_fast_reclaim_humongous_time_ms = value;
300 _cur_fast_reclaim_humongous_reclaimed = reclaimed;
301 }
302
303 void record_young_cset_choice_time_ms(double time_ms) {
304 _recorded_young_cset_choice_time_ms = time_ms;
305 }
306
307 void record_non_young_cset_choice_time_ms(double time_ms) {
308 _recorded_non_young_cset_choice_time_ms = time_ms;
309 }
310
311 void record_redirty_logged_cards_time_ms(double time_ms) {
312 _recorded_redirty_logged_cards_time_ms = time_ms;
313 }
314
315 void record_preserve_cm_referents_time_ms(double time_ms) {
316 _recorded_preserve_cm_referents_time_ms = time_ms;
317 }
318
319 void record_merge_pss_time_ms(double time_ms) {
320 _recorded_merge_pss_time_ms = time_ms;
321 }
322
323 void record_start_new_cset_time_ms(double time_ms) {
324 _recorded_start_new_cset_time_ms = time_ms;
325 }
326
327 void record_cur_collection_start_sec(double time_ms) {
328 _cur_collection_start_sec = time_ms;
329 }
330
331 void record_verify_before_time_ms(double time_ms) {
332 _cur_verify_before_time_ms = time_ms;
333 }
334
335 void record_verify_after_time_ms(double time_ms) {
336 _cur_verify_after_time_ms = time_ms;
337 }
338
339 void inc_external_accounted_time_ms(double time_ms) {
340 _external_accounted_time_ms += time_ms;
341 }
342
343 void record_clear_claimed_marks_time_ms(double recorded_clear_claimed_marks_time_ms) {
344 _recorded_clear_claimed_marks_time_ms = recorded_clear_claimed_marks_time_ms;
345 }
346
347 double cur_collection_start_sec() {
348 return _cur_collection_start_sec;
349 }
350
351 double cur_collection_par_time_ms() {
352 return _cur_collection_par_time_ms;
353 }
354
355 double cur_clear_ct_time_ms() {
356 return _cur_clear_ct_time_ms;
357 }
358
359 double cur_expand_heap_time_ms() {
360 return _cur_expand_heap_time_ms;
361 }
362
363 double root_region_scan_wait_time_ms() {
364 return _root_region_scan_wait_time_ms;
365 }
366
367 double young_cset_choice_time_ms() {
368 return _recorded_young_cset_choice_time_ms;
369 }
370
371 double total_free_cset_time_ms() {
372 return _recorded_total_free_cset_time_ms;
373 }
374
375 double non_young_cset_choice_time_ms() {
376 return _recorded_non_young_cset_choice_time_ms;
377 }
378
379 double fast_reclaim_humongous_time_ms() {
380 return _cur_fast_reclaim_humongous_time_ms;
381 }
382
383 ReferenceProcessorPhaseTimes* ref_phase_times() { return &_ref_phase_times; }
384
385 WeakProcessorPhaseTimes* weak_phase_times() { return &_weak_phase_times; }
386 };
387
388 class G1EvacPhaseWithTrimTimeTracker : public StackObj {
389 G1ParScanThreadState* _pss;
390 Ticks _start;
391
392 Tickspan& _total_time;
393 Tickspan& _trim_time;
394
395 bool _stopped;
396 public:
397 G1EvacPhaseWithTrimTimeTracker(G1ParScanThreadState* pss, Tickspan& total_time, Tickspan& trim_time);
398 ~G1EvacPhaseWithTrimTimeTracker();
399
400 void stop();
401 };
402
403 class G1GCParPhaseTimesTracker : public CHeapObj<mtGC> {
404 protected:
405 Ticks _start_time;
406 G1GCPhaseTimes::GCParPhases _phase;
407 G1GCPhaseTimes* _phase_times;
408 uint _worker_id;
409 EventGCPhaseParallel _event;
410 public:
411 G1GCParPhaseTimesTracker(G1GCPhaseTimes* phase_times, G1GCPhaseTimes::GCParPhases phase, uint worker_id);
412 virtual ~G1GCParPhaseTimesTracker();
413 };
414
415 class G1EvacPhaseTimesTracker : public G1GCParPhaseTimesTracker {
416 Tickspan _total_time;
417 Tickspan _trim_time;
418
419 G1EvacPhaseWithTrimTimeTracker _trim_tracker;
420 public:
421 G1EvacPhaseTimesTracker(G1GCPhaseTimes* phase_times, G1ParScanThreadState* pss, G1GCPhaseTimes::GCParPhases phase, uint worker_id);
422 virtual ~G1EvacPhaseTimesTracker();
423 };
424
425 #endif // SHARE_GC_G1_G1GCPHASETIMES_HPP