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_young_free_cset_time_ms;
115 double _recorded_non_young_free_cset_time_ms;
116
117 double _cur_fast_reclaim_humongous_time_ms;
118 double _cur_fast_reclaim_humongous_register_time_ms;
119 size_t _cur_fast_reclaim_humongous_total;
120 size_t _cur_fast_reclaim_humongous_candidates;
121 size_t _cur_fast_reclaim_humongous_reclaimed;
122
123 double _cur_verify_before_time_ms;
124 double _cur_verify_after_time_ms;
125
126 // Helper methods for detailed logging
127 void print_stats(const char*, const char* str, double value);
128
129 void note_gc_end();
130
131 public:
132 G1GCPhaseTimes(uint max_gc_threads);
133 void note_gc_start(uint active_gc_threads);
134 void print();
135
136 // record the time a phase took in seconds
137 void record_time_secs(GCParPhases phase, uint worker_i, double secs);
138
139 // add a number of seconds to a phase
140 void add_time_secs(GCParPhases phase, uint worker_i, double secs);
141
142 void record_thread_work_item(GCParPhases phase, uint worker_i, size_t count);
143
144 // return the average time for a phase in milliseconds
145 double average_time_ms(GCParPhases phase);
146
147 size_t sum_thread_work_items(GCParPhases phase);
148
149 private:
150 double get_time_ms(GCParPhases phase, uint worker_i);
151 double sum_time_ms(GCParPhases phase);
152 double min_time_ms(GCParPhases phase);
153 double max_time_ms(GCParPhases phase);
154 size_t get_thread_work_item(GCParPhases phase, uint worker_i);
155 double average_thread_work_items(GCParPhases phase);
156 size_t min_thread_work_items(GCParPhases phase);
157 size_t max_thread_work_items(GCParPhases phase);
158
159 public:
160
161 void record_clear_ct_time(double ms) {
162 _cur_clear_ct_time_ms = ms;
163 }
164
165 void record_expand_heap_time(double ms) {
166 _cur_expand_heap_time_ms = ms;
167 }
168
169 void record_par_time(double ms) {
170 _cur_collection_par_time_ms = ms;
171 }
172
173 void record_code_root_fixup_time(double ms) {
174 _cur_collection_code_root_fixup_time_ms = ms;
175 }
176
177 void record_strong_code_root_purge_time(double ms) {
178 _cur_strong_code_root_purge_time_ms = ms;
179 }
180
181 void record_evac_fail_recalc_used_time(double ms) {
182 _cur_evac_fail_recalc_used = ms;
183 }
184
185 void record_evac_fail_restore_remsets(double ms) {
186 _cur_evac_fail_restore_remsets = ms;
187 }
188
189 void record_evac_fail_remove_self_forwards(double ms) {
190 _cur_evac_fail_remove_self_forwards = ms;
191 }
192
193 void record_string_dedup_fixup_time(double ms) {
194 _cur_string_dedup_fixup_time_ms = ms;
195 }
196
197 void record_ref_proc_time(double ms) {
198 _cur_ref_proc_time_ms = ms;
199 }
200
201 void record_ref_enq_time(double ms) {
202 _cur_ref_enq_time_ms = ms;
203 }
204
205 void record_root_region_scan_wait_time(double time_ms) {
206 _root_region_scan_wait_time_ms = time_ms;
207 }
208
209 void record_young_free_cset_time_ms(double time_ms) {
210 _recorded_young_free_cset_time_ms = time_ms;
211 }
212
213 void record_non_young_free_cset_time_ms(double time_ms) {
214 _recorded_non_young_free_cset_time_ms = time_ms;
215 }
216
217 void record_fast_reclaim_humongous_stats(double time_ms, size_t total, size_t candidates) {
218 _cur_fast_reclaim_humongous_register_time_ms = time_ms;
219 _cur_fast_reclaim_humongous_total = total;
220 _cur_fast_reclaim_humongous_candidates = candidates;
221 }
222
223 void record_fast_reclaim_humongous_time_ms(double value, size_t reclaimed) {
224 _cur_fast_reclaim_humongous_time_ms = value;
225 _cur_fast_reclaim_humongous_reclaimed = reclaimed;
226 }
227
228 void record_young_cset_choice_time_ms(double time_ms) {
229 _recorded_young_cset_choice_time_ms = time_ms;
230 }
231
232 void record_non_young_cset_choice_time_ms(double time_ms) {
233 _recorded_non_young_cset_choice_time_ms = time_ms;
234 }
235
236 void record_redirty_logged_cards_time_ms(double time_ms) {
237 _recorded_redirty_logged_cards_time_ms = time_ms;
238 }
239
240 void record_preserve_cm_referents_time_ms(double time_ms) {
241 _recorded_preserve_cm_referents_time_ms = time_ms;
242 }
243
244 void record_cur_collection_start_sec(double time_ms) {
245 _cur_collection_start_sec = time_ms;
246 }
247
248 void record_verify_before_time_ms(double time_ms) {
249 _cur_verify_before_time_ms = time_ms;
250 }
251
252 void record_verify_after_time_ms(double time_ms) {
253 _cur_verify_after_time_ms = time_ms;
254 }
255
256 void inc_external_accounted_time_ms(double time_ms) {
257 _external_accounted_time_ms += time_ms;
258 }
259
260 double accounted_time_ms();
261
262 double cur_collection_start_sec() {
263 return _cur_collection_start_sec;
264 }
265
266 double cur_collection_par_time_ms() {
267 return _cur_collection_par_time_ms;
268 }
269
270 double cur_clear_ct_time_ms() {
271 return _cur_clear_ct_time_ms;
272 }
273
274 double cur_expand_heap_time_ms() {
275 return _cur_expand_heap_time_ms;
276 }
277
278 double root_region_scan_wait_time_ms() {
279 return _root_region_scan_wait_time_ms;
280 }
281
282 double young_cset_choice_time_ms() {
283 return _recorded_young_cset_choice_time_ms;
284 }
285
286 double young_free_cset_time_ms() {
287 return _recorded_young_free_cset_time_ms;
288 }
289
290 double non_young_cset_choice_time_ms() {
291 return _recorded_non_young_cset_choice_time_ms;
292 }
293
294 double non_young_free_cset_time_ms() {
295 return _recorded_non_young_free_cset_time_ms;
296 }
297
298 double fast_reclaim_humongous_time_ms() {
299 return _cur_fast_reclaim_humongous_time_ms;
300 }
301 };
302
303 class G1GCParPhaseTimesTracker : public StackObj {
304 double _start_time;
305 G1GCPhaseTimes::GCParPhases _phase;
306 G1GCPhaseTimes* _phase_times;
307 uint _worker_id;
308 public:
309 G1GCParPhaseTimesTracker(G1GCPhaseTimes* phase_times, G1GCPhaseTimes::GCParPhases phase, uint worker_id);
310 ~G1GCParPhaseTimesTracker();
311 };
312
313 #endif // SHARE_VM_GC_G1_G1GCPHASETIMES_HPP