1 /*
2 * Copyright (c) 2013, 2014 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 GCPhaseTimeTracker VALUE_OBJ_CLASS_SPEC {
111 private:
112 friend class G1GCPhaseTimes;
113
114 WorkerDataArray<double>** _data;
115 uint _num_phases;
116 uint _worker_id;
117 public:
118 GCPhaseTimeTracker(WorkerDataArray<double>** data, uint num_phases, uint worker_id) :
119 _data(data), _num_phases(num_phases), _worker_id(worker_id) { }
120
121 bool active() const { return _num_phases > 0; }
122
123 void set_value(uint phase, double value) {
124 assert(_data != NULL, "just checking");
125 _data[phase]->set(_worker_id, value);
126 }
127 };
128
129 class G1GCPhaseTimes : public CHeapObj<mtGC> {
130
131 private:
132 uint _active_gc_threads;
133 uint _max_gc_threads;
134 uint _num_ext_root_scan_phases;
135
136 bool track_ext_root_scan_phases() const { return _num_ext_root_scan_phases > 0; }
137
138 WorkerDataArray<double> _last_gc_worker_start_times_ms;
139 WorkerDataArray<double> _last_ext_root_scan_times_ms;
140 WorkerDataArray<double>** _last_ext_root_scan_phase_times_ms;
141 WorkerDataArray<double> _last_satb_filtering_times_ms;
142 WorkerDataArray<double> _last_update_rs_times_ms;
143 WorkerDataArray<int> _last_update_rs_processed_buffers;
144 WorkerDataArray<double> _last_scan_rs_times_ms;
145 WorkerDataArray<double> _last_strong_code_root_scan_times_ms;
146 WorkerDataArray<double> _last_obj_copy_times_ms;
147 WorkerDataArray<double> _last_termination_times_ms;
148 WorkerDataArray<size_t> _last_termination_attempts;
149 WorkerDataArray<double> _last_gc_worker_end_times_ms;
150 WorkerDataArray<double> _last_gc_worker_times_ms;
151 WorkerDataArray<double> _last_gc_worker_other_times_ms;
152
153 double _cur_collection_par_time_ms;
154 double _cur_collection_code_root_fixup_time_ms;
155 double _cur_strong_code_root_purge_time_ms;
156
157 double _cur_evac_fail_recalc_used;
158 double _cur_evac_fail_restore_remsets;
159 double _cur_evac_fail_remove_self_forwards;
160
161 double _cur_string_dedup_fixup_time_ms;
162 WorkerDataArray<double> _cur_string_dedup_queue_fixup_worker_times_ms;
163 WorkerDataArray<double> _cur_string_dedup_table_fixup_worker_times_ms;
164
165 double _cur_clear_ct_time_ms;
166 double _cur_ref_proc_time_ms;
167 double _cur_ref_enq_time_ms;
168
169 double _cur_collection_start_sec;
170 double _root_region_scan_wait_time_ms;
171
172 double _recorded_young_cset_choice_time_ms;
173 double _recorded_non_young_cset_choice_time_ms;
174
175 WorkerDataArray<double> _last_redirty_logged_cards_time_ms;
176 WorkerDataArray<size_t> _last_redirty_logged_cards_processed_cards;
177 double _recorded_redirty_logged_cards_time_ms;
178
179 double _recorded_young_free_cset_time_ms;
180 double _recorded_non_young_free_cset_time_ms;
181
182 double _cur_fast_reclaim_humongous_time_ms;
183 double _cur_fast_reclaim_humongous_register_time_ms;
184 size_t _cur_fast_reclaim_humongous_total;
185 size_t _cur_fast_reclaim_humongous_candidates;
186 size_t _cur_fast_reclaim_humongous_reclaimed;
187
188 double _cur_verify_before_time_ms;
189 double _cur_verify_after_time_ms;
190
191 // Helper methods for detailed logging
192 void print_stats(int level, const char* str, double value);
193 void print_stats(int level, const char* str, size_t value);
194 void print_stats(int level, const char* str, double value, uint workers);
195
196 public:
197 G1GCPhaseTimes(uint max_gc_threads, uint num_ext_root_scan_phases);
198 virtual ~G1GCPhaseTimes();
199
200 WorkerDataArray<double>** get_ext_root_scan_phase_times() const { return _last_ext_root_scan_phase_times_ms; }
201 uint num_ext_root_scan_phases() const { return _num_ext_root_scan_phases; }
202
203 void note_gc_start(uint active_gc_threads);
204 void note_gc_end();
205 void print(double pause_time_sec);
206
207 void record_gc_worker_start_time(uint worker_i, double ms) {
208 _last_gc_worker_start_times_ms.set(worker_i, ms);
209 }
210
211 void record_ext_root_scan_time(uint worker_i, double ms) {
212 _last_ext_root_scan_times_ms.set(worker_i, ms);
213 }
214
215 void record_satb_filtering_time(uint worker_i, double ms) {
216 _last_satb_filtering_times_ms.set(worker_i, ms);
217 }
218
219 void record_update_rs_time(uint worker_i, double ms) {
220 _last_update_rs_times_ms.set(worker_i, ms);
221 }
222
223 void record_update_rs_processed_buffers(uint worker_i, int processed_buffers) {
224 _last_update_rs_processed_buffers.set(worker_i, processed_buffers);
225 }
226
227 void record_scan_rs_time(uint worker_i, double ms) {
228 _last_scan_rs_times_ms.set(worker_i, ms);
229 }
230
231 void record_strong_code_root_scan_time(uint worker_i, double ms) {
232 _last_strong_code_root_scan_times_ms.set(worker_i, ms);
233 }
234
235 void record_obj_copy_time(uint worker_i, double ms) {
236 _last_obj_copy_times_ms.set(worker_i, ms);
237 }
238
239 void add_obj_copy_time(uint worker_i, double ms) {
240 _last_obj_copy_times_ms.add(worker_i, ms);
241 }
242
243 void record_termination(uint worker_i, double ms, size_t attempts) {
244 _last_termination_times_ms.set(worker_i, ms);
245 _last_termination_attempts.set(worker_i, attempts);
246 }
247
248 void record_gc_worker_end_time(uint worker_i, double ms) {
249 _last_gc_worker_end_times_ms.set(worker_i, ms);
250 }
251
252 void record_clear_ct_time(double ms) {
253 _cur_clear_ct_time_ms = ms;
254 }
255
256 void record_par_time(double ms) {
257 _cur_collection_par_time_ms = ms;
258 }
259
260 void record_code_root_fixup_time(double ms) {
261 _cur_collection_code_root_fixup_time_ms = ms;
262 }
263
264 void record_strong_code_root_purge_time(double ms) {
265 _cur_strong_code_root_purge_time_ms = ms;
266 }
267
268 void record_evac_fail_recalc_used_time(double ms) {
269 _cur_evac_fail_recalc_used = ms;
270 }
271
272 void record_evac_fail_restore_remsets(double ms) {
273 _cur_evac_fail_restore_remsets = ms;
274 }
275
276 void record_evac_fail_remove_self_forwards(double ms) {
277 _cur_evac_fail_remove_self_forwards = ms;
278 }
279
280 void note_string_dedup_fixup_start();
281 void note_string_dedup_fixup_end();
282
283 void record_string_dedup_fixup_time(double ms) {
284 _cur_string_dedup_fixup_time_ms = ms;
285 }
286
287 void record_string_dedup_queue_fixup_worker_time(uint worker_id, double ms) {
288 _cur_string_dedup_queue_fixup_worker_times_ms.set(worker_id, ms);
289 }
290
291 void record_string_dedup_table_fixup_worker_time(uint worker_id, double ms) {
292 _cur_string_dedup_table_fixup_worker_times_ms.set(worker_id, ms);
293 }
294
295 void record_ref_proc_time(double ms) {
296 _cur_ref_proc_time_ms = ms;
297 }
298
299 void record_ref_enq_time(double ms) {
300 _cur_ref_enq_time_ms = ms;
301 }
302
303 void record_root_region_scan_wait_time(double time_ms) {
304 _root_region_scan_wait_time_ms = time_ms;
305 }
306
307 void record_young_free_cset_time_ms(double time_ms) {
308 _recorded_young_free_cset_time_ms = time_ms;
309 }
310
311 void record_non_young_free_cset_time_ms(double time_ms) {
312 _recorded_non_young_free_cset_time_ms = time_ms;
313 }
314
315 void record_fast_reclaim_humongous_stats(double time_ms, size_t total, size_t candidates) {
316 _cur_fast_reclaim_humongous_register_time_ms = time_ms;
317 _cur_fast_reclaim_humongous_total = total;
318 _cur_fast_reclaim_humongous_candidates = candidates;
319 }
320
321 void record_fast_reclaim_humongous_time_ms(double value, size_t reclaimed) {
322 _cur_fast_reclaim_humongous_time_ms = value;
323 _cur_fast_reclaim_humongous_reclaimed = reclaimed;
324 }
325
326 void record_young_cset_choice_time_ms(double time_ms) {
327 _recorded_young_cset_choice_time_ms = time_ms;
328 }
329
330 void record_non_young_cset_choice_time_ms(double time_ms) {
331 _recorded_non_young_cset_choice_time_ms = time_ms;
332 }
333
334 void record_redirty_logged_cards_time_ms(uint worker_i, double time_ms) {
335 _last_redirty_logged_cards_time_ms.set(worker_i, time_ms);
336 }
337
338 void record_redirty_logged_cards_processed_cards(uint worker_i, size_t processed_buffers) {
339 _last_redirty_logged_cards_processed_cards.set(worker_i, processed_buffers);
340 }
341
342 void record_redirty_logged_cards_time_ms(double time_ms) {
343 _recorded_redirty_logged_cards_time_ms = time_ms;
344 }
345
346 void record_cur_collection_start_sec(double time_ms) {
347 _cur_collection_start_sec = time_ms;
348 }
349
350 void record_verify_before_time_ms(double time_ms) {
351 _cur_verify_before_time_ms = time_ms;
352 }
353
354 void record_verify_after_time_ms(double time_ms) {
355 _cur_verify_after_time_ms = time_ms;
356 }
357
358 double accounted_time_ms();
359
360 double cur_collection_start_sec() {
361 return _cur_collection_start_sec;
362 }
363
364 double cur_collection_par_time_ms() {
365 return _cur_collection_par_time_ms;
366 }
367
368 double cur_clear_ct_time_ms() {
369 return _cur_clear_ct_time_ms;
370 }
371
372 double root_region_scan_wait_time_ms() {
373 return _root_region_scan_wait_time_ms;
374 }
375
376 double young_cset_choice_time_ms() {
377 return _recorded_young_cset_choice_time_ms;
378 }
379
380 double young_free_cset_time_ms() {
381 return _recorded_young_free_cset_time_ms;
382 }
383
384 double non_young_cset_choice_time_ms() {
385 return _recorded_non_young_cset_choice_time_ms;
386 }
387
388 double non_young_free_cset_time_ms() {
389 return _recorded_non_young_free_cset_time_ms;
390 }
391
392 double fast_reclaim_humongous_time_ms() {
393 return _cur_fast_reclaim_humongous_time_ms;
394 }
395
396 double average_last_update_rs_time() {
397 return _last_update_rs_times_ms.average();
398 }
399
400 int sum_last_update_rs_processed_buffers() {
401 return _last_update_rs_processed_buffers.sum();
402 }
403
404 double average_last_scan_rs_time(){
405 return _last_scan_rs_times_ms.average();
406 }
407
408 double average_last_strong_code_root_scan_time(){
409 return _last_strong_code_root_scan_times_ms.average();
410 }
411
412 double average_last_obj_copy_time() {
413 return _last_obj_copy_times_ms.average();
414 }
415
416 double average_last_termination_time() {
417 return _last_termination_times_ms.average();
418 }
419
420 double average_last_ext_root_scan_time() {
421 return _last_ext_root_scan_times_ms.average();
422 }
423
424 double average_last_satb_filtering_times_ms() {
425 return _last_satb_filtering_times_ms.average();
426 }
427 };
428
429 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1GCPHASETIMESLOG_HPP