1 /*
2 * Copyright (c) 2013, 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 #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_G1GCPHASETIMESLOG_HPP
26 #define SHARE_VM_GC_IMPLEMENTATION_G1_G1GCPHASETIMESLOG_HPP
27
28 #include "memory/allocation.hpp"
29 #include "gc_interface/gcCause.hpp"
30
31 template <class T>
32 class WorkerDataArray : public CHeapObj<mtGC> {
33 T* _data;
34 uint _length;
35 const char* _print_format;
36 bool _print_sum;
37
38 NOT_PRODUCT(static const T _uninitialized;)
39
40 // We are caching the sum and average to only have to calculate them once.
41 // This is not done in an MT-safe way. It is intended to allow single
42 // threaded code to call sum() and average() multiple times in any order
43 // without having to worry about the cost.
44 bool _has_new_data;
45 T _sum;
46 double _average;
47
48 public:
49 WorkerDataArray(uint length, const char* print_format, bool print_sum = true) :
50 _length(length), _print_format(print_format), _print_sum(print_sum), _has_new_data(true) {
51 assert(length > 0, "Must have some workers to store data for");
52 _data = NEW_C_HEAP_ARRAY(T, _length, mtGC);
53 }
54
55 ~WorkerDataArray() {
56 FREE_C_HEAP_ARRAY(T, _data);
57 }
58
59 void set(uint worker_i, T value) {
60 assert(worker_i < _length, err_msg("Worker %d is greater than max: %d", worker_i, _length));
61 assert(_data[worker_i] == (T)-1, err_msg("Overwriting data for worker %d", worker_i));
62 _data[worker_i] = value;
63 _has_new_data = true;
64 }
65
66 T get(uint worker_i) {
67 assert(worker_i < _length, err_msg("Worker %d is greater than max: %d", worker_i, _length));
68 assert(_data[worker_i] != (T)-1, err_msg("No data to add to for worker %d", worker_i));
69 return _data[worker_i];
70 }
71
72 void add(uint worker_i, T value) {
73 assert(worker_i < _length, err_msg("Worker %d is greater than max: %d", worker_i, _length));
74 assert(_data[worker_i] != (T)-1, err_msg("No data to add to for worker %d", worker_i));
75 _data[worker_i] += value;
76 _has_new_data = true;
77 }
78
79 double average(){
80 if (_has_new_data) {
81 calculate_totals();
82 }
83 return _average;
84 }
85
86 T sum() {
87 if (_has_new_data) {
88 calculate_totals();
89 }
90 return _sum;
91 }
92
93 void print(int level, const char* title);
94
95 void reset() PRODUCT_RETURN;
96 void verify() PRODUCT_RETURN;
97
98 private:
99
100 void calculate_totals(){
101 _sum = (T)0;
102 for (uint i = 0; i < _length; ++i) {
103 _sum += _data[i];
104 }
105 _average = (double)_sum / (double)_length;
106 _has_new_data = false;
107 }
108 };
109
110 class GCPhaseTimeData : public PhaseTimeData {
111 private:
112 WorkerDataArray<double>** _data;
113 uint _num_phases;
114 uint _worker_id;
115 public:
116 GCPhaseTimeData(WorkerDataArray<double>** data, uint num_phases, uint worker_id) :
117 _data(data), _num_phases(num_phases), _worker_id(worker_id) { }
118
119 virtual bool active() const { return _num_phases > 0; }
120
121 virtual void set_value(uint phase, double value) {
122 assert(_data != NULL, "just checking");
123 _data[phase]->set(_worker_id, value);
124 }
125 };
126
127 class G1GCPhaseTimes : public CHeapObj<mtGC> {
128
129 private:
130 uint _active_gc_threads;
131 uint _max_gc_threads;
132 uint _num_ext_root_scan_phases;
133
134 bool track_ext_root_scan_phases() const { return _num_ext_root_scan_phases > 0; }
135
136 WorkerDataArray<double> _last_gc_worker_start_times_ms;
137 WorkerDataArray<double> _last_ext_root_scan_times_ms;
138 WorkerDataArray<double>** _last_ext_root_scan_phase_times_ms;
139 WorkerDataArray<double> _last_satb_filtering_times_ms;
140 WorkerDataArray<double> _last_update_rs_times_ms;
141 WorkerDataArray<int> _last_update_rs_processed_buffers;
142 WorkerDataArray<double> _last_scan_rs_times_ms;
143 WorkerDataArray<double> _last_strong_code_root_scan_times_ms;
144 WorkerDataArray<double> _last_obj_copy_times_ms;
145 WorkerDataArray<double> _last_termination_times_ms;
146 WorkerDataArray<size_t> _last_termination_attempts;
147 WorkerDataArray<double> _last_gc_worker_end_times_ms;
148 WorkerDataArray<double> _last_gc_worker_times_ms;
149 WorkerDataArray<double> _last_gc_worker_other_times_ms;
150
151 double _cur_collection_par_time_ms;
152 double _cur_collection_code_root_fixup_time_ms;
153 double _cur_strong_code_root_purge_time_ms;
154
155 double _cur_evac_fail_recalc_used;
156 double _cur_evac_fail_restore_remsets;
157 double _cur_evac_fail_remove_self_forwards;
158
159 double _cur_string_dedup_fixup_time_ms;
160 WorkerDataArray<double> _cur_string_dedup_queue_fixup_worker_times_ms;
161 WorkerDataArray<double> _cur_string_dedup_table_fixup_worker_times_ms;
162
163 double _cur_clear_ct_time_ms;
164 double _cur_ref_proc_time_ms;
165 double _cur_ref_enq_time_ms;
166
167 double _cur_collection_start_sec;
168 double _root_region_scan_wait_time_ms;
169
170 double _recorded_young_cset_choice_time_ms;
171 double _recorded_non_young_cset_choice_time_ms;
172
173 WorkerDataArray<double> _last_redirty_logged_cards_time_ms;
174 WorkerDataArray<size_t> _last_redirty_logged_cards_processed_cards;
175 double _recorded_redirty_logged_cards_time_ms;
176
177 double _recorded_young_free_cset_time_ms;
178 double _recorded_non_young_free_cset_time_ms;
179
180 double _cur_fast_reclaim_humongous_time_ms;
181 double _cur_fast_reclaim_humongous_register_time_ms;
182 size_t _cur_fast_reclaim_humongous_total;
183 size_t _cur_fast_reclaim_humongous_candidates;
184 size_t _cur_fast_reclaim_humongous_reclaimed;
185
186 double _cur_verify_before_time_ms;
187 double _cur_verify_after_time_ms;
188
189 // Helper methods for detailed logging
190 void print_stats(int level, const char* str, double value);
191 void print_stats(int level, const char* str, size_t value);
192 void print_stats(int level, const char* str, double value, uint workers);
193
194 public:
195 G1GCPhaseTimes(uint max_gc_threads, uint num_ext_root_scan_phases);
196 virtual ~G1GCPhaseTimes();
197
198 WorkerDataArray<double>** get_ext_root_scan_phase_times() const { return _last_ext_root_scan_phase_times_ms; }
199 uint num_ext_root_scan_phases() const { return _num_ext_root_scan_phases; }
200
201 void note_gc_start(uint active_gc_threads);
202 void note_gc_end();
203 void print(double pause_time_sec);
204
205 void record_gc_worker_start_time(uint worker_i, double ms) {
206 _last_gc_worker_start_times_ms.set(worker_i, ms);
207 }
208
209 void record_ext_root_scan_time(uint worker_i, double ms) {
210 _last_ext_root_scan_times_ms.set(worker_i, ms);
211 }
212
213 void record_satb_filtering_time(uint worker_i, double ms) {
214 _last_satb_filtering_times_ms.set(worker_i, ms);
215 }
216
217 void record_update_rs_time(uint worker_i, double ms) {
218 _last_update_rs_times_ms.set(worker_i, ms);
219 }
220
221 void record_update_rs_processed_buffers(uint worker_i, int processed_buffers) {
222 _last_update_rs_processed_buffers.set(worker_i, processed_buffers);
223 }
224
225 void record_scan_rs_time(uint worker_i, double ms) {
226 _last_scan_rs_times_ms.set(worker_i, ms);
227 }
228
229 void record_strong_code_root_scan_time(uint worker_i, double ms) {
230 _last_strong_code_root_scan_times_ms.set(worker_i, ms);
231 }
232
233 void record_obj_copy_time(uint worker_i, double ms) {
234 _last_obj_copy_times_ms.set(worker_i, ms);
235 }
236
237 void add_obj_copy_time(uint worker_i, double ms) {
238 _last_obj_copy_times_ms.add(worker_i, ms);
239 }
240
241 void record_termination(uint worker_i, double ms, size_t attempts) {
242 _last_termination_times_ms.set(worker_i, ms);
243 _last_termination_attempts.set(worker_i, attempts);
244 }
245
246 void record_gc_worker_end_time(uint worker_i, double ms) {
247 _last_gc_worker_end_times_ms.set(worker_i, ms);
248 }
249
250 void record_clear_ct_time(double ms) {
251 _cur_clear_ct_time_ms = ms;
252 }
253
254 void record_par_time(double ms) {
255 _cur_collection_par_time_ms = ms;
256 }
257
258 void record_code_root_fixup_time(double ms) {
259 _cur_collection_code_root_fixup_time_ms = ms;
260 }
261
262 void record_strong_code_root_purge_time(double ms) {
263 _cur_strong_code_root_purge_time_ms = ms;
264 }
265
266 void record_evac_fail_recalc_used_time(double ms) {
267 _cur_evac_fail_recalc_used = ms;
268 }
269
270 void record_evac_fail_restore_remsets(double ms) {
271 _cur_evac_fail_restore_remsets = ms;
272 }
273
274 void record_evac_fail_remove_self_forwards(double ms) {
275 _cur_evac_fail_remove_self_forwards = ms;
276 }
277
278 void note_string_dedup_fixup_start();
279 void note_string_dedup_fixup_end();
280
281 void record_string_dedup_fixup_time(double ms) {
282 _cur_string_dedup_fixup_time_ms = ms;
283 }
284
285 void record_string_dedup_queue_fixup_worker_time(uint worker_id, double ms) {
286 _cur_string_dedup_queue_fixup_worker_times_ms.set(worker_id, ms);
287 }
288
289 void record_string_dedup_table_fixup_worker_time(uint worker_id, double ms) {
290 _cur_string_dedup_table_fixup_worker_times_ms.set(worker_id, ms);
291 }
292
293 void record_ref_proc_time(double ms) {
294 _cur_ref_proc_time_ms = ms;
295 }
296
297 void record_ref_enq_time(double ms) {
298 _cur_ref_enq_time_ms = ms;
299 }
300
301 void record_root_region_scan_wait_time(double time_ms) {
302 _root_region_scan_wait_time_ms = time_ms;
303 }
304
305 void record_young_free_cset_time_ms(double time_ms) {
306 _recorded_young_free_cset_time_ms = time_ms;
307 }
308
309 void record_non_young_free_cset_time_ms(double time_ms) {
310 _recorded_non_young_free_cset_time_ms = time_ms;
311 }
312
313 void record_fast_reclaim_humongous_stats(double time_ms, size_t total, size_t candidates) {
314 _cur_fast_reclaim_humongous_register_time_ms = time_ms;
315 _cur_fast_reclaim_humongous_total = total;
316 _cur_fast_reclaim_humongous_candidates = candidates;
317 }
318
319 void record_fast_reclaim_humongous_time_ms(double value, size_t reclaimed) {
320 _cur_fast_reclaim_humongous_time_ms = value;
321 _cur_fast_reclaim_humongous_reclaimed = reclaimed;
322 }
323
324 void record_young_cset_choice_time_ms(double time_ms) {
325 _recorded_young_cset_choice_time_ms = time_ms;
326 }
327
328 void record_non_young_cset_choice_time_ms(double time_ms) {
329 _recorded_non_young_cset_choice_time_ms = time_ms;
330 }
331
332 void record_redirty_logged_cards_time_ms(uint worker_i, double time_ms) {
333 _last_redirty_logged_cards_time_ms.set(worker_i, time_ms);
334 }
335
336 void record_redirty_logged_cards_processed_cards(uint worker_i, size_t processed_buffers) {
337 _last_redirty_logged_cards_processed_cards.set(worker_i, processed_buffers);
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_cur_collection_start_sec(double time_ms) {
345 _cur_collection_start_sec = time_ms;
346 }
347
348 void record_verify_before_time_ms(double time_ms) {
349 _cur_verify_before_time_ms = time_ms;
350 }
351
352 void record_verify_after_time_ms(double time_ms) {
353 _cur_verify_after_time_ms = time_ms;
354 }
355
356 double accounted_time_ms();
357
358 double cur_collection_start_sec() {
359 return _cur_collection_start_sec;
360 }
361
362 double cur_collection_par_time_ms() {
363 return _cur_collection_par_time_ms;
364 }
365
366 double cur_clear_ct_time_ms() {
367 return _cur_clear_ct_time_ms;
368 }
369
370 double root_region_scan_wait_time_ms() {
371 return _root_region_scan_wait_time_ms;
372 }
373
374 double young_cset_choice_time_ms() {
375 return _recorded_young_cset_choice_time_ms;
376 }
377
378 double young_free_cset_time_ms() {
379 return _recorded_young_free_cset_time_ms;
380 }
381
382 double non_young_cset_choice_time_ms() {
383 return _recorded_non_young_cset_choice_time_ms;
384 }
385
386 double non_young_free_cset_time_ms() {
387 return _recorded_non_young_free_cset_time_ms;
388 }
389
390 double fast_reclaim_humongous_time_ms() {
391 return _cur_fast_reclaim_humongous_time_ms;
392 }
393
394 double average_last_update_rs_time() {
395 return _last_update_rs_times_ms.average();
396 }
397
398 int sum_last_update_rs_processed_buffers() {
399 return _last_update_rs_processed_buffers.sum();
400 }
401
402 double average_last_scan_rs_time(){
403 return _last_scan_rs_times_ms.average();
404 }
405
406 double average_last_strong_code_root_scan_time(){
407 return _last_strong_code_root_scan_times_ms.average();
408 }
409
410 double average_last_obj_copy_time() {
411 return _last_obj_copy_times_ms.average();
412 }
413
414 double average_last_termination_time() {
415 return _last_termination_times_ms.average();
416 }
417
418 double average_last_ext_root_scan_time() {
419 return _last_ext_root_scan_times_ms.average();
420 }
421
422 double average_last_satb_filtering_times_ms() {
423 return _last_satb_filtering_times_ms.average();
424 }
425 };
426
427 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1GCPHASETIMESLOG_HPP