1 /*
2 * Copyright (c) 2013, 2018, 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_VM_GC_G1_G1GCPHASETIMES_HPP
26 #define SHARE_VM_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 StringTableRoots,
52 UniverseRoots,
53 JNIRoots,
54 ObjectSynchronizerRoots,
55 ManagementRoots,
56 SystemDictionaryRoots,
57 CLDGRoots,
58 JVMTIRoots,
59 CMRefRoots,
60 WaitForStrongCLD,
61 WeakCLDRoots,
62 SATBFiltering,
63 UpdateRS,
64 ScanHCC,
65 ScanRS,
66 CodeRoots,
67 #if INCLUDE_AOT
68 AOTCodeRoots,
69 #endif
70 ObjCopy,
71 Termination,
72 Other,
73 GCWorkerTotal,
74 GCWorkerEnd,
75 StringDedupQueueFixup,
76 StringDedupTableFixup,
77 RedirtyCards,
78 YoungFreeCSet,
79 NonYoungFreeCSet,
80 GCParPhasesSentinel
81 };
82
83 enum GCScanRSWorkItems {
84 ScanRSScannedCards,
85 ScanRSClaimedCards,
86 ScanRSSkippedCards
87 };
88
89 enum GCUpdateRSWorkItems {
90 UpdateRSProcessedBuffers,
91 UpdateRSScannedCards,
92 UpdateRSSkippedCards
93 };
94
95 private:
96 // Markers for grouping the phases in the GCPhases enum above
97 static const int GCMainParPhasesLast = GCWorkerEnd;
98 static const int StringDedupPhasesFirst = StringDedupQueueFixup;
99 static const int StringDedupPhasesLast = StringDedupTableFixup;
100
101 WorkerDataArray<double>* _gc_par_phases[GCParPhasesSentinel];
102
103 WorkerDataArray<size_t>* _update_rs_processed_buffers;
104 WorkerDataArray<size_t>* _update_rs_scanned_cards;
105 WorkerDataArray<size_t>* _update_rs_skipped_cards;
106
107 WorkerDataArray<size_t>* _scan_rs_scanned_cards;
108 WorkerDataArray<size_t>* _scan_rs_claimed_cards;
109 WorkerDataArray<size_t>* _scan_rs_skipped_cards;
110
111 WorkerDataArray<size_t>* _termination_attempts;
112
113 WorkerDataArray<size_t>* _redirtied_cards;
114
115 double _cur_collection_par_time_ms;
116 double _cur_collection_code_root_fixup_time_ms;
117 double _cur_strong_code_root_purge_time_ms;
118
119 double _cur_evac_fail_recalc_used;
120 double _cur_evac_fail_remove_self_forwards;
121
122 double _cur_string_dedup_fixup_time_ms;
123
124 double _cur_prepare_tlab_time_ms;
125 double _cur_resize_tlab_time_ms;
126
127 double _cur_derived_pointer_table_update_time_ms;
128
129 double _cur_clear_ct_time_ms;
130 double _cur_expand_heap_time_ms;
131 double _cur_ref_proc_time_ms;
132
133 double _cur_collection_start_sec;
134 double _root_region_scan_wait_time_ms;
135
136 double _external_accounted_time_ms;
137
138 double _recorded_clear_claimed_marks_time_ms;
139
140 double _recorded_young_cset_choice_time_ms;
141 double _recorded_non_young_cset_choice_time_ms;
142
143 double _recorded_redirty_logged_cards_time_ms;
144
145 double _recorded_preserve_cm_referents_time_ms;
146
147 double _recorded_merge_pss_time_ms;
148
149 double _recorded_start_new_cset_time_ms;
150
151 double _recorded_total_free_cset_time_ms;
152
153 double _recorded_serial_free_cset_time_ms;
154
155 double _cur_fast_reclaim_humongous_time_ms;
156 double _cur_fast_reclaim_humongous_register_time_ms;
157 size_t _cur_fast_reclaim_humongous_total;
158 size_t _cur_fast_reclaim_humongous_candidates;
159 size_t _cur_fast_reclaim_humongous_reclaimed;
160
161 double _cur_verify_before_time_ms;
162 double _cur_verify_after_time_ms;
163
164 ReferenceProcessorPhaseTimes _ref_phase_times;
165 WeakProcessorPhaseTimes _weak_phase_times;
166
167 double worker_time(GCParPhases phase, uint worker);
168 void note_gc_end();
169 void reset();
170
171 template <class T>
172 void details(T* phase, const char* indent) const;
173
174 void log_phase(WorkerDataArray<double>* phase, uint indent, outputStream* out, bool print_sum) const;
175 void debug_phase(WorkerDataArray<double>* phase) const;
176 void trace_phase(WorkerDataArray<double>* phase, bool print_sum = true) const;
177
178 void info_time(const char* name, double value) const;
179 void debug_time(const char* name, double value) const;
180 // This will print logs for both 'gc+phases' and 'gc+phases+ref'.
181 void debug_time_for_reference(const char* name, double value) const;
182 void trace_time(const char* name, double value) const;
183 void trace_count(const char* name, size_t value) const;
184
185 double print_pre_evacuate_collection_set() const;
186 double print_evacuate_collection_set() const;
187 double print_post_evacuate_collection_set() const;
188 void print_other(double accounted_ms) const;
189
190 public:
191 G1GCPhaseTimes(STWGCTimer* gc_timer, uint max_gc_threads);
192 void note_gc_start();
193 void print();
194 static const char* phase_name(GCParPhases phase);
195
196 // record the time a phase took in seconds
197 void record_time_secs(GCParPhases phase, uint worker_i, double secs);
198
199 // add a number of seconds to a phase
200 void add_time_secs(GCParPhases phase, uint worker_i, double secs);
201
202 void record_or_add_objcopy_time_secs(uint worker_i, double secs);
203
204 void record_thread_work_item(GCParPhases phase, uint worker_i, size_t count, uint index = 0);
205
206 // return the average time for a phase in milliseconds
207 double average_time_ms(GCParPhases phase);
208
209 size_t sum_thread_work_items(GCParPhases phase, uint index = 0);
210
211 public:
212
213 void record_prepare_tlab_time_ms(double ms) {
214 _cur_prepare_tlab_time_ms = ms;
215 }
216
217 void record_resize_tlab_time_ms(double ms) {
218 _cur_resize_tlab_time_ms = ms;
219 }
220
221 void record_derived_pointer_table_update_time(double ms) {
222 _cur_derived_pointer_table_update_time_ms = ms;
223 }
224
225 void record_clear_ct_time(double ms) {
226 _cur_clear_ct_time_ms = ms;
227 }
228
229 void record_expand_heap_time(double ms) {
230 _cur_expand_heap_time_ms = ms;
231 }
232
233 void record_par_time(double ms) {
234 _cur_collection_par_time_ms = ms;
235 }
236
237 void record_code_root_fixup_time(double ms) {
238 _cur_collection_code_root_fixup_time_ms = ms;
239 }
240
241 void record_strong_code_root_purge_time(double ms) {
242 _cur_strong_code_root_purge_time_ms = ms;
243 }
244
245 void record_evac_fail_recalc_used_time(double ms) {
246 _cur_evac_fail_recalc_used = ms;
247 }
248
249 void record_evac_fail_remove_self_forwards(double ms) {
250 _cur_evac_fail_remove_self_forwards = ms;
251 }
252
253 void record_string_dedup_fixup_time(double ms) {
254 _cur_string_dedup_fixup_time_ms = ms;
255 }
256
257 void record_ref_proc_time(double ms) {
258 _cur_ref_proc_time_ms = ms;
259 }
260
261 void record_root_region_scan_wait_time(double time_ms) {
262 _root_region_scan_wait_time_ms = time_ms;
263 }
264
265 void record_total_free_cset_time_ms(double time_ms) {
266 _recorded_total_free_cset_time_ms = time_ms;
267 }
268
269 void record_serial_free_cset_time_ms(double time_ms) {
270 _recorded_serial_free_cset_time_ms = time_ms;
271 }
272
273 void record_fast_reclaim_humongous_stats(double time_ms, size_t total, size_t candidates) {
274 _cur_fast_reclaim_humongous_register_time_ms = time_ms;
275 _cur_fast_reclaim_humongous_total = total;
276 _cur_fast_reclaim_humongous_candidates = candidates;
277 }
278
279 void record_fast_reclaim_humongous_time_ms(double value, size_t reclaimed) {
280 _cur_fast_reclaim_humongous_time_ms = value;
281 _cur_fast_reclaim_humongous_reclaimed = reclaimed;
282 }
283
284 void record_young_cset_choice_time_ms(double time_ms) {
285 _recorded_young_cset_choice_time_ms = time_ms;
286 }
287
288 void record_non_young_cset_choice_time_ms(double time_ms) {
289 _recorded_non_young_cset_choice_time_ms = time_ms;
290 }
291
292 void record_redirty_logged_cards_time_ms(double time_ms) {
293 _recorded_redirty_logged_cards_time_ms = time_ms;
294 }
295
296 void record_preserve_cm_referents_time_ms(double time_ms) {
297 _recorded_preserve_cm_referents_time_ms = time_ms;
298 }
299
300 void record_merge_pss_time_ms(double time_ms) {
301 _recorded_merge_pss_time_ms = time_ms;
302 }
303
304 void record_start_new_cset_time_ms(double time_ms) {
305 _recorded_start_new_cset_time_ms = time_ms;
306 }
307
308 void record_cur_collection_start_sec(double time_ms) {
309 _cur_collection_start_sec = time_ms;
310 }
311
312 void record_verify_before_time_ms(double time_ms) {
313 _cur_verify_before_time_ms = time_ms;
314 }
315
316 void record_verify_after_time_ms(double time_ms) {
317 _cur_verify_after_time_ms = time_ms;
318 }
319
320 void inc_external_accounted_time_ms(double time_ms) {
321 _external_accounted_time_ms += time_ms;
322 }
323
324 void record_clear_claimed_marks_time_ms(double recorded_clear_claimed_marks_time_ms) {
325 _recorded_clear_claimed_marks_time_ms = recorded_clear_claimed_marks_time_ms;
326 }
327
328 double cur_collection_start_sec() {
329 return _cur_collection_start_sec;
330 }
331
332 double cur_collection_par_time_ms() {
333 return _cur_collection_par_time_ms;
334 }
335
336 double cur_clear_ct_time_ms() {
337 return _cur_clear_ct_time_ms;
338 }
339
340 double cur_expand_heap_time_ms() {
341 return _cur_expand_heap_time_ms;
342 }
343
344 double root_region_scan_wait_time_ms() {
345 return _root_region_scan_wait_time_ms;
346 }
347
348 double young_cset_choice_time_ms() {
349 return _recorded_young_cset_choice_time_ms;
350 }
351
352 double total_free_cset_time_ms() {
353 return _recorded_total_free_cset_time_ms;
354 }
355
356 double non_young_cset_choice_time_ms() {
357 return _recorded_non_young_cset_choice_time_ms;
358 }
359
360 double fast_reclaim_humongous_time_ms() {
361 return _cur_fast_reclaim_humongous_time_ms;
362 }
363
364 ReferenceProcessorPhaseTimes* ref_phase_times() { return &_ref_phase_times; }
365
366 WeakProcessorPhaseTimes* weak_phase_times() { return &_weak_phase_times; }
367 };
368
369 class G1EvacPhaseWithTrimTimeTracker : public StackObj {
370 G1ParScanThreadState* _pss;
371 Ticks _start;
372
373 Tickspan& _total_time;
374 Tickspan& _trim_time;
375
376 bool _stopped;
377 public:
378 G1EvacPhaseWithTrimTimeTracker(G1ParScanThreadState* pss, Tickspan& total_time, Tickspan& trim_time);
379 ~G1EvacPhaseWithTrimTimeTracker();
380
381 void stop();
382 };
383
384 class G1GCParPhaseTimesTracker : public CHeapObj<mtGC> {
385 protected:
386 Ticks _start_time;
387 G1GCPhaseTimes::GCParPhases _phase;
388 G1GCPhaseTimes* _phase_times;
389 uint _worker_id;
390 EventGCPhaseParallel _event;
391 public:
392 G1GCParPhaseTimesTracker(G1GCPhaseTimes* phase_times, G1GCPhaseTimes::GCParPhases phase, uint worker_id);
393 virtual ~G1GCParPhaseTimesTracker();
394 };
395
396 class G1EvacPhaseTimesTracker : public G1GCParPhaseTimesTracker {
397 Tickspan _total_time;
398 Tickspan _trim_time;
399
400 G1EvacPhaseWithTrimTimeTracker _trim_tracker;
401 public:
402 G1EvacPhaseTimesTracker(G1GCPhaseTimes* phase_times, G1ParScanThreadState* pss, G1GCPhaseTimes::GCParPhases phase, uint worker_id);
403 virtual ~G1EvacPhaseTimesTracker();
404 };
405
406 #endif // SHARE_VM_GC_G1_G1GCPHASETIMES_HPP