1 /*
2 * Copyright (c) 2013, 2016, 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 "memory/allocation.hpp"
29
30 class LineBuffer;
31
32 template <class T> class WorkerDataArray;
33
34 class G1GCPhaseTimes : public CHeapObj<mtGC> {
35 friend class G1GCParPhasePrinter;
36
37 uint _active_gc_threads;
38 uint _max_gc_threads;
39 jlong _gc_start_counter;
40 double _gc_pause_time_ms;
41
42 public:
43 enum GCParPhases {
44 GCWorkerStart,
45 ExtRootScan,
46 ThreadRoots,
47 StringTableRoots,
48 UniverseRoots,
49 JNIRoots,
50 ObjectSynchronizerRoots,
51 FlatProfilerRoots,
52 ManagementRoots,
53 SystemDictionaryRoots,
54 CLDGRoots,
55 JVMTIRoots,
56 CMRefRoots,
57 WaitForStrongCLD,
58 WeakCLDRoots,
59 SATBFiltering,
60 UpdateRS,
61 ScanHCC,
62 ScanRS,
63 CodeRoots,
64 ObjCopy,
65 Termination,
66 Other,
67 GCWorkerTotal,
68 GCWorkerEnd,
69 StringDedupQueueFixup,
70 StringDedupTableFixup,
71 RedirtyCards,
72 PreserveCMReferents,
73 GCParPhasesSentinel
74 };
75
76 private:
77 // Markers for grouping the phases in the GCPhases enum above
78 static const int GCMainParPhasesLast = GCWorkerEnd;
79 static const int StringDedupPhasesFirst = StringDedupQueueFixup;
80 static const int StringDedupPhasesLast = StringDedupTableFixup;
81
82 WorkerDataArray<double>* _gc_par_phases[GCParPhasesSentinel];
83 WorkerDataArray<size_t>* _update_rs_processed_buffers;
84 WorkerDataArray<size_t>* _termination_attempts;
85 WorkerDataArray<size_t>* _redirtied_cards;
86
87 double _cur_collection_par_time_ms;
88 double _cur_collection_code_root_fixup_time_ms;
89 double _cur_strong_code_root_purge_time_ms;
90
91 double _cur_evac_fail_recalc_used;
92 double _cur_evac_fail_restore_remsets;
93 double _cur_evac_fail_remove_self_forwards;
94
95 double _cur_string_dedup_fixup_time_ms;
96
97 double _cur_clear_ct_time_ms;
98 double _cur_expand_heap_time_ms;
99 double _cur_ref_proc_time_ms;
100 double _cur_ref_enq_time_ms;
101
102 double _cur_collection_start_sec;
103 double _root_region_scan_wait_time_ms;
104
105 double _external_accounted_time_ms;
106
107 double _recorded_young_cset_choice_time_ms;
108 double _recorded_non_young_cset_choice_time_ms;
109
110 double _recorded_redirty_logged_cards_time_ms;
111
112 double _recorded_preserve_cm_referents_time_ms;
113
114 double _recorded_merge_pss_time_ms;
115
116 double _recorded_young_free_cset_time_ms;
117 double _recorded_non_young_free_cset_time_ms;
118
119 double _cur_fast_reclaim_humongous_time_ms;
120 double _cur_fast_reclaim_humongous_register_time_ms;
121 size_t _cur_fast_reclaim_humongous_total;
122 size_t _cur_fast_reclaim_humongous_candidates;
123 size_t _cur_fast_reclaim_humongous_reclaimed;
124
125 double _cur_verify_before_time_ms;
126 double _cur_verify_after_time_ms;
127
128 // Helper methods for detailed logging
129 void print_stats(const char*, const char* str, double value);
130
131 void note_gc_end();
132
133 public:
134 G1GCPhaseTimes(uint max_gc_threads);
135 void note_gc_start(uint active_gc_threads);
136 void print();
137
138 // record the time a phase took in seconds
139 void record_time_secs(GCParPhases phase, uint worker_i, double secs);
140
141 // add a number of seconds to a phase
142 void add_time_secs(GCParPhases phase, uint worker_i, double secs);
143
144 void record_thread_work_item(GCParPhases phase, uint worker_i, size_t count);
145
146 // return the average time for a phase in milliseconds
147 double average_time_ms(GCParPhases phase);
148
149 size_t sum_thread_work_items(GCParPhases phase);
150
151 private:
152 double get_time_ms(GCParPhases phase, uint worker_i);
153 double sum_time_ms(GCParPhases phase);
154 double min_time_ms(GCParPhases phase);
155 double max_time_ms(GCParPhases phase);
156 size_t get_thread_work_item(GCParPhases phase, uint worker_i);
157 double average_thread_work_items(GCParPhases phase);
158 size_t min_thread_work_items(GCParPhases phase);
159 size_t max_thread_work_items(GCParPhases phase);
160
161 public:
162
163 void record_clear_ct_time(double ms) {
164 _cur_clear_ct_time_ms = ms;
165 }
166
167 void record_expand_heap_time(double ms) {
168 _cur_expand_heap_time_ms = ms;
169 }
170
171 void record_par_time(double ms) {
172 _cur_collection_par_time_ms = ms;
173 }
174
175 void record_code_root_fixup_time(double ms) {
176 _cur_collection_code_root_fixup_time_ms = ms;
177 }
178
179 void record_strong_code_root_purge_time(double ms) {
180 _cur_strong_code_root_purge_time_ms = ms;
181 }
182
183 void record_evac_fail_recalc_used_time(double ms) {
184 _cur_evac_fail_recalc_used = ms;
185 }
186
187 void record_evac_fail_restore_remsets(double ms) {
188 _cur_evac_fail_restore_remsets = ms;
189 }
190
191 void record_evac_fail_remove_self_forwards(double ms) {
192 _cur_evac_fail_remove_self_forwards = ms;
193 }
194
195 void record_string_dedup_fixup_time(double ms) {
196 _cur_string_dedup_fixup_time_ms = ms;
197 }
198
199 void record_ref_proc_time(double ms) {
200 _cur_ref_proc_time_ms = ms;
201 }
202
203 void record_ref_enq_time(double ms) {
204 _cur_ref_enq_time_ms = ms;
205 }
206
207 void record_root_region_scan_wait_time(double time_ms) {
208 _root_region_scan_wait_time_ms = time_ms;
209 }
210
211 void record_young_free_cset_time_ms(double time_ms) {
212 _recorded_young_free_cset_time_ms = time_ms;
213 }
214
215 void record_non_young_free_cset_time_ms(double time_ms) {
216 _recorded_non_young_free_cset_time_ms = time_ms;
217 }
218
219 void record_fast_reclaim_humongous_stats(double time_ms, size_t total, size_t candidates) {
220 _cur_fast_reclaim_humongous_register_time_ms = time_ms;
221 _cur_fast_reclaim_humongous_total = total;
222 _cur_fast_reclaim_humongous_candidates = candidates;
223 }
224
225 void record_fast_reclaim_humongous_time_ms(double value, size_t reclaimed) {
226 _cur_fast_reclaim_humongous_time_ms = value;
227 _cur_fast_reclaim_humongous_reclaimed = reclaimed;
228 }
229
230 void record_young_cset_choice_time_ms(double time_ms) {
231 _recorded_young_cset_choice_time_ms = time_ms;
232 }
233
234 void record_non_young_cset_choice_time_ms(double time_ms) {
235 _recorded_non_young_cset_choice_time_ms = time_ms;
236 }
237
238 void record_redirty_logged_cards_time_ms(double time_ms) {
239 _recorded_redirty_logged_cards_time_ms = time_ms;
240 }
241
242 void record_preserve_cm_referents_time_ms(double time_ms) {
243 _recorded_preserve_cm_referents_time_ms = time_ms;
244 }
245
246 void record_merge_pss_time_ms(double time_ms) {
247 _recorded_merge_pss_time_ms = time_ms;
248 }
249
250 void record_cur_collection_start_sec(double time_ms) {
251 _cur_collection_start_sec = time_ms;
252 }
253
254 void record_verify_before_time_ms(double time_ms) {
255 _cur_verify_before_time_ms = time_ms;
256 }
257
258 void record_verify_after_time_ms(double time_ms) {
259 _cur_verify_after_time_ms = time_ms;
260 }
261
262 void inc_external_accounted_time_ms(double time_ms) {
263 _external_accounted_time_ms += time_ms;
264 }
265
266 double accounted_time_ms();
267
268 double cur_collection_start_sec() {
269 return _cur_collection_start_sec;
270 }
271
272 double cur_collection_par_time_ms() {
273 return _cur_collection_par_time_ms;
274 }
275
276 double cur_clear_ct_time_ms() {
277 return _cur_clear_ct_time_ms;
278 }
279
280 double cur_expand_heap_time_ms() {
281 return _cur_expand_heap_time_ms;
282 }
283
284 double root_region_scan_wait_time_ms() {
285 return _root_region_scan_wait_time_ms;
286 }
287
288 double young_cset_choice_time_ms() {
289 return _recorded_young_cset_choice_time_ms;
290 }
291
292 double young_free_cset_time_ms() {
293 return _recorded_young_free_cset_time_ms;
294 }
295
296 double non_young_cset_choice_time_ms() {
297 return _recorded_non_young_cset_choice_time_ms;
298 }
299
300 double non_young_free_cset_time_ms() {
301 return _recorded_non_young_free_cset_time_ms;
302 }
303
304 double fast_reclaim_humongous_time_ms() {
305 return _cur_fast_reclaim_humongous_time_ms;
306 }
307 };
308
309 class G1GCParPhaseTimesTracker : public StackObj {
310 double _start_time;
311 G1GCPhaseTimes::GCParPhases _phase;
312 G1GCPhaseTimes* _phase_times;
313 uint _worker_id;
314 public:
315 G1GCParPhaseTimesTracker(G1GCPhaseTimes* phase_times, G1GCPhaseTimes::GCParPhases phase, uint worker_id);
316 ~G1GCParPhaseTimesTracker();
317 };
318
319 #endif // SHARE_VM_GC_G1_G1GCPHASETIMES_HPP