1 /*
2 * Copyright (c) 2017, 2019, Red Hat, Inc. 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_GC_SHENANDOAH_SHENANDOAHPHASETIMINGS_HPP
26 #define SHARE_GC_SHENANDOAH_SHENANDOAHPHASETIMINGS_HPP
27
28 #include "gc/shenandoah/shenandoahNumberSeq.hpp"
29 #include "gc/shared/workerDataArray.hpp"
30 #include "memory/allocation.hpp"
31
32 class ShenandoahCollectorPolicy;
33 class ShenandoahWorkerTimings;
34 class outputStream;
35
36 #define SHENANDOAH_GC_PHASE_DO(f) \
37 f(total_pause_gross, "Total Pauses (G)") \
38 f(total_pause, "Total Pauses (N)") \
39 f(init_mark_gross, "Pause Init Mark (G)") \
40 f(init_mark, "Pause Init Mark (N)") \
41 f(make_parsable, " Make Parsable") \
42 f(clear_liveness, " Clear Liveness") \
43 \
44 /* Per-thread timer block, should have "roots" counters in consistent order */ \
45 f(scan_roots, " Scan Roots") \
46 f(scan_thread_roots, " S: Thread Roots") \
47 f(scan_code_roots, " S: Code Cache Roots") \
48 f(scan_universe_roots, " S: Universe Roots") \
49 f(scan_jni_roots, " S: JNI Roots") \
50 f(scan_jvmti_weak_roots, " S: JVMTI Weak Roots") \
51 f(scan_jfr_weak_roots, " S: JFR Weak Roots") \
52 f(scan_jni_weak_roots, " S: JNI Weak Roots") \
53 f(scan_stringtable_roots, " S: String Table Roots") \
54 f(scan_resolved_method_table_roots, " S: Resolved Table Roots") \
55 f(scan_vm_global_roots, " S: VM Global Roots") \
56 f(scan_vm_weak_roots, " S: VM Weak Roots") \
57 f(scan_synchronizer_roots, " S: Synchronizer Roots") \
58 f(scan_management_roots, " S: Management Roots") \
59 f(scan_system_dictionary_roots, " S: System Dict Roots") \
60 f(scan_cldg_roots, " S: CLDG Roots") \
61 f(scan_jvmti_roots, " S: JVMTI Roots") \
62 f(scan_string_dedup_table_roots, " S: Dedup Table Roots") \
63 f(scan_string_dedup_queue_roots, " S: Dedup Queue Roots") \
64 f(scan_finish_queues, " S: Finish Queues" ) \
65 \
66 f(resize_tlabs, " Resize TLABs") \
67 \
68 f(final_mark_gross, "Pause Final Mark (G)") \
69 f(final_mark, "Pause Final Mark (N)") \
70 \
71 /* Per-thread timer block, should have "roots" counters in consistent order */ \
72 f(update_roots, " Update Roots") \
73 f(update_thread_roots, " U: Thread Roots") \
74 f(update_code_roots, " U: Code Cache Roots") \
75 f(update_universe_roots, " U: Universe Roots") \
76 f(update_jni_roots, " U: JNI Roots") \
77 f(update_jvmti_weak_roots, " U: JVMTI Weak Roots") \
78 f(update_jfr_weak_roots, " U: JFR Weak Roots") \
79 f(update_jni_weak_roots, " U: JNI Weak Roots") \
80 f(update_stringtable_roots, " U: String Table Roots") \
81 f(update_resolved_method_table_roots, " U: Resolved Table Roots") \
82 f(update_vm_global_roots, " U: VM Global Roots") \
83 f(update_vm_weak_roots, " U: VM Weak Roots") \
84 f(update_synchronizer_roots, " U: Synchronizer Roots") \
85 f(update_management_roots, " U: Management Roots") \
86 f(update_system_dictionary_roots, " U: System Dict Roots") \
87 f(update_cldg_roots, " U: CLDG Roots") \
88 f(update_jvmti_roots, " U: JVMTI Roots") \
89 f(update_string_dedup_table_roots, " U: Dedup Table Roots") \
90 f(update_string_dedup_queue_roots, " U: Dedup Queue Roots") \
91 f(update_finish_queues, " U: Finish Queues") \
92 \
93 f(finish_queues, " Finish Queues") \
94 f(weakrefs, " Weak References") \
95 f(weakrefs_process, " Process") \
96 f(purge, " System Purge") \
97 f(purge_class_unload, " Unload Classes") \
98 f(purge_par, " Parallel Cleanup") \
99 f(purge_cldg, " CLDG") \
100 f(complete_liveness, " Complete Liveness") \
101 f(retire_tlabs, " Retire TLABs") \
102 f(sync_pinned, " Sync Pinned") \
103 f(trash_cset, " Trash CSet") \
104 f(prepare_evac, " Prepare Evacuation") \
105 \
106 /* Per-thread timer block, should have "roots" counters in consistent order */ \
107 f(init_evac, " Initial Evacuation") \
108 f(evac_thread_roots, " E: Thread Roots") \
109 f(evac_code_roots, " E: Code Cache Roots") \
110 f(evac_universe_roots, " E: Universe Roots") \
111 f(evac_jni_roots, " E: JNI Roots") \
112 f(evac_jvmti_weak_roots, " E: JVMTI Weak Roots") \
113 f(evac_jfr_weak_roots, " E: JFR Weak Roots") \
114 f(evac_jni_weak_roots, " E: JNI Weak Roots") \
115 f(evac_stringtable_roots, " E: String Table Roots") \
116 f(evac_resolved_method_table_roots, " E: Resolved Table Roots") \
117 f(evac_vm_global_roots, " E: VM Global Roots") \
118 f(evac_vm_weak_roots, " E: VM Weak Roots") \
119 f(evac_synchronizer_roots, " E: Synchronizer Roots") \
120 f(evac_management_roots, " E: Management Roots") \
121 f(evac_system_dictionary_roots, " E: System Dict Roots") \
122 f(evac_cldg_roots, " E: CLDG Roots") \
123 f(evac_jvmti_roots, " E: JVMTI Roots") \
124 f(evac_string_dedup_table_roots, " E: String Dedup Table Roots") \
125 f(evac_string_dedup_queue_roots, " E: String Dedup Queue Roots") \
126 f(evac_finish_queues, " E: Finish Queues") \
127 \
128 f(final_evac_gross, "Pause Final Evac (G)") \
129 f(final_evac, "Pause Final Evac (N)") \
130 f(final_evac_retire_gclabs, " Retire GCLABs") \
131 \
132 f(init_update_refs_gross, "Pause Init Update Refs (G)") \
133 f(init_update_refs, "Pause Init Update Refs (N)") \
134 f(init_update_refs_retire_gclabs, " Retire GCLABs") \
135 f(init_update_refs_prepare, " Prepare") \
136 \
137 f(final_update_refs_gross, "Pause Final Update Refs (G)") \
138 f(final_update_refs, "Pause Final Update Refs (N)") \
139 f(final_update_refs_finish_work, " Finish Work") \
140 \
141 /* Per-thread timer block, should have "roots" counters in consistent order */ \
142 f(final_update_refs_roots, " Update Roots") \
143 f(final_update_refs_thread_roots, " UR: Thread Roots") \
144 f(final_update_refs_code_roots, " UR: Code Cache Roots") \
145 f(final_update_refs_universe_roots, " UR: Universe Roots") \
146 f(final_update_refs_jni_roots, " UR: JNI Roots") \
147 f(final_update_jvmti_weak_roots, " UR: JVMTI Weak Roots") \
148 f(final_update_jfr_weak_roots, " UR: JFR Weak Roots") \
149 f(final_update_jni_weak_roots, " UR: JNI Weak Roots") \
150 f(final_update_stringtable_roots, " UR: String Table Roots") \
151 f(final_update_resolved_method_table_roots, " UR: Resolved Table Roots") \
152 f(final_update_vm_global_roots, " UR: VM Global Roots") \
153 f(final_update_vm_weak_roots, " UR: VM Weak Roots") \
154 f(final_update_refs_synchronizer_roots, " UR: Synchronizer Roots") \
155 f(final_update_refs_management_roots, " UR: Management Roots") \
156 f(final_update_refs_system_dict_roots, " UR: System Dict Roots") \
157 f(final_update_refs_cldg_roots, " UR: CLDG Roots") \
158 f(final_update_refs_jvmti_roots, " UR: JVMTI Roots") \
159 f(final_update_refs_string_dedup_table_roots, " UR: Dedup Table Roots") \
160 f(final_update_refs_string_dedup_queue_roots, " UR: Dedup Queue Roots") \
161 f(final_update_refs_finish_queues, " UR: Finish Queues") \
162 \
163 f(final_update_refs_sync_pinned, " Sync Pinned") \
164 f(final_update_refs_trash_cset, " Trash CSet") \
165 \
166 f(degen_gc_gross, "Pause Degenerated GC (G)") \
167 f(degen_gc, "Pause Degenerated GC (N)") \
168 \
169 /* Per-thread timer block, should have "roots" counters in consistent order */ \
170 f(degen_gc_update_roots, " Degen Update Roots") \
171 f(degen_gc_update_thread_roots, " DU: Thread Roots") \
172 f(degen_gc_update_code_roots, " DU: Code Cache Roots") \
173 f(degen_gc_update_universe_roots, " DU: Universe Roots") \
174 f(degen_gc_update_jni_roots, " DU: JNI Roots") \
175 f(degen_gc_update_jvmti_weak_roots, " DU: JVMTI Weak Roots") \
176 f(degen_gc_update_jfr_weak_roots, " DU: JFR Weak Roots") \
177 f(degen_gc_update_jni_weak_roots, " DU: JNI Weak Roots") \
178 f(degen_gc_update_stringtable_roots, " DU: String Table Roots") \
179 f(degen_gc_update_resolved_method_table_roots, " DU: Resolved Table Roots") \
180 f(degen_gc_update_vm_global_roots, " DU: VM Global Roots") \
181 f(degen_gc_update_vm_weak_roots, " DU: VM Weak Roots") \
182 f(degen_gc_update_synchronizer_roots, " DU: Synchronizer Roots") \
183 f(degen_gc_update_management_roots, " DU: Management Roots") \
184 f(degen_gc_update_system_dict_roots, " DU: System Dict Roots") \
185 f(degen_gc_update_cldg_roots, " DU: CLDG Roots") \
186 f(degen_gc_update_jvmti_roots, " DU: JVMTI Roots") \
187 f(degen_gc_update_string_dedup_table_roots, " DU: Dedup Table Roots") \
188 f(degen_gc_update_string_dedup_queue_roots, " DU: Dedup Queue Roots") \
189 f(degen_gc_update_finish_queues, " DU: Finish Queues") \
190 \
191 f(init_traversal_gc_gross, "Pause Init Traversal (G)") \
192 f(init_traversal_gc, "Pause Init Traversal (N)") \
193 f(traversal_gc_prepare, " Prepare") \
194 f(traversal_gc_make_parsable, " Make Parsable") \
195 f(traversal_gc_resize_tlabs, " Resize TLABs") \
196 f(traversal_gc_prepare_sync_pinned, " Sync Pinned") \
197 \
198 /* Per-thread timer block, should have "roots" counters in consistent order */ \
199 f(init_traversal_gc_work, " Work") \
200 f(init_traversal_gc_thread_roots, " TI: Thread Roots") \
201 f(init_traversal_gc_code_roots, " TI: Code Cache Roots") \
202 f(init_traversal_gc_universe_roots, " TI: Universe Roots") \
203 f(init_traversal_gc_jni_roots, " TI: JNI Roots") \
204 f(init_traversal_gc_jvmti_weak_roots, " TI: JVMTI Weak Roots") \
205 f(init_traversal_gc_jfr_weak_roots, " TI: JFR Weak Roots") \
206 f(init_traversal_gc_jni_weak_roots, " TI: JNI Weak Roots") \
207 f(init_traversal_gc_stringtable_roots, " TI: String Table Roots") \
208 f(init_traversal_gc_resolved_method_table_roots, " TI: Resolved Table Roots") \
209 f(init_traversal_gc_vm_global_roots, " TI: VM Global Roots") \
210 f(init_traversal_gc_vm_weak_roots, " TI: VM Weak Roots") \
211 f(init_traversal_gc_synchronizer_roots, " TI: Synchronizer Roots") \
212 f(init_traversal_gc_management_roots, " TI: Management Roots") \
213 f(init_traversal_gc_system_dict_roots, " TI: System Dict Roots") \
214 f(init_traversal_gc_cldg_roots, " TI: CLDG Roots") \
215 f(init_traversal_gc_jvmti_roots, " TI: JVMTI Roots") \
216 f(init_traversal_gc_string_dedup_table_roots, " TI: Dedup Table Roots") \
217 f(init_traversal_gc_string_dedup_queue_roots, " TI: Dedup Queue Roots") \
218 f(init_traversal_gc_finish_queues, " TI: Finish Queues") \
219 \
220 f(final_traversal_gc_gross, "Pause Final Traversal (G)") \
221 f(final_traversal_gc, "Pause Final Traversal (N)") \
222 \
223 /* Per-thread timer block, should have "roots" counters in consistent order */ \
224 f(final_traversal_gc_work, " Work") \
225 f(final_traversal_gc_thread_roots, " TF: Thread Roots") \
226 f(final_traversal_gc_code_roots, " TF: Code Cache Roots") \
227 f(final_traversal_gc_universe_roots, " TF: Universe Roots") \
228 f(final_traversal_gc_jni_roots, " TF: JNI Roots") \
229 f(final_traversal_gc_jvmti_weak_roots, " TF: JVMTI Weak Roots") \
230 f(final_traversal_gc_jfr_weak_roots, " TF: JFR Weak Roots") \
231 f(final_traversal_gc_jni_weak_roots, " TF: JNI Weak Roots") \
232 f(final_traversal_gc_stringtable_roots, " TF: String Table Roots") \
233 f(final_traversal_gc_resolved_method_table_roots, " TF: Resolved Table Roots") \
234 f(final_traversal_gc_vm_global_roots, " TF: VM Global Roots") \
235 f(final_traversal_gc_vm_weak_roots, " TF: VM Weak Roots") \
236 f(final_traversal_gc_synchronizer_roots, " TF: Synchronizer Roots") \
237 f(final_traversal_gc_management_roots, " TF: Management Roots") \
238 f(final_traversal_gc_system_dict_roots, " TF: System Dict Roots") \
239 f(final_traversal_gc_cldg_roots, " TF: CLDG Roots") \
240 f(final_traversal_gc_jvmti_roots, " TF: JVMTI Roots") \
241 f(final_traversal_gc_string_dedup_table_roots, " TF: Dedup Table Roots") \
242 f(final_traversal_gc_string_dedup_queue_roots, " TF: Dedup Queue Roots") \
243 f(final_traversal_gc_finish_queues, " TF: Finish Queues") \
244 \
245 /* Per-thread timer block, should have "roots" counters in consistent order */ \
246 f(final_traversal_update_roots, " Update Roots") \
247 f(final_traversal_update_thread_roots, " TU: Thread Roots") \
248 f(final_traversal_update_code_roots, " TU: Code Cache Roots") \
249 f(final_traversal_update_universe_roots, " TU: Universe Roots") \
250 f(final_traversal_update_jni_roots, " TU: JNI Roots") \
251 f(final_traversal_update_jvmti_weak_roots, " TU: JVMTI Weak Roots") \
252 f(final_traversal_update_jfr_weak_roots, " TU: JFR Weak Roots") \
253 f(final_traversal_update_jni_weak_roots, " TU: JNI Weak Roots") \
254 f(final_traversal_update_stringtable_roots, " TU: String Table Roots") \
255 f(final_traversal_update_resolved_method_table_roots, " TU: Resolved Table Roots") \
256 f(final_traversal_update_vm_global_roots, " TU: VM Global Roots") \
257 f(final_traversal_update_vm_weak_roots, " TU: VM Weak Roots") \
258 f(final_traversal_update_synchronizer_roots, " TU: Synchronizer Roots") \
259 f(final_traversal_update_management_roots, " TU: Management Roots") \
260 f(final_traversal_update_system_dict_roots, " TU: System Dict Roots") \
261 f(final_traversal_update_cldg_roots, " TU: CLDG Roots") \
262 f(final_traversal_update_jvmti_roots, " TU: JVMTI Roots") \
263 f(final_traversal_update_string_dedup_table_roots, " TU: Dedup Table Roots") \
264 f(final_traversal_update_string_dedup_queue_roots, " TU: Dedup Queue Roots") \
265 f(final_traversal_update_finish_queues, " TU: Finish Queues") \
266 \
267 f(traversal_gc_sync_pinned, " Sync Pinned") \
268 f(traversal_gc_cleanup, " Cleanup") \
269 \
270 f(full_gc_gross, "Pause Full GC (G)") \
271 f(full_gc, "Pause Full GC (N)") \
272 f(full_gc_heapdumps, " Heap Dumps") \
273 f(full_gc_prepare, " Prepare") \
274 \
275 /* Per-thread timer block, should have "roots" counters in consistent order */ \
276 f(full_gc_roots, " Roots") \
277 f(full_gc_thread_roots, " F: Thread Roots") \
278 f(full_gc_code_roots, " F: Code Cache Roots") \
279 f(full_gc_universe_roots, " F: Universe Roots") \
280 f(full_gc_jni_roots, " F: JNI Roots") \
281 f(full_gc_jvmti_weak_roots, " F: JVMTI Weak Roots") \
282 f(full_gc_jfr_weak_roots, " F: JFR Weak Roots") \
283 f(full_gc_jni_weak_roots, " F: JNI Weak Roots") \
284 f(full_gc_stringtable_roots, " F: String Table Roots") \
285 f(full_gc_resolved_method_table_roots, " F: Resolved Table Roots") \
286 f(full_gc_vm_global_roots, " F: VM Global Roots") \
287 f(full_gc_vm_weak_roots, " F: VM Weak Roots") \
288 f(full_gc_synchronizer_roots, " F: Synchronizer Roots") \
289 f(full_gc_management_roots, " F: Management Roots") \
290 f(full_gc_system_dictionary_roots, " F: System Dict Roots") \
291 f(full_gc_cldg_roots, " F: CLDG Roots") \
292 f(full_gc_jvmti_roots, " F: JVMTI Roots") \
293 f(full_gc_string_dedup_table_roots, " F: Dedup Table Roots") \
294 f(full_gc_string_dedup_queue_roots, " F: Dedup Queue Roots") \
295 f(full_gc_finish_queues, " F: Finish Queues") \
296 \
297 f(full_gc_mark, " Mark") \
298 f(full_gc_mark_finish_queues, " Finish Queues") \
299 f(full_gc_weakrefs, " Weak References") \
300 f(full_gc_weakrefs_process, " Process") \
301 f(full_gc_purge, " System Purge") \
302 f(full_gc_purge_class_unload, " Unload Classes") \
303 f(full_gc_purge_par, " Parallel Cleanup") \
304 f(full_gc_purge_cldg, " CLDG") \
305 f(full_gc_calculate_addresses, " Calculate Addresses") \
306 f(full_gc_calculate_addresses_regular, " Regular Objects") \
307 f(full_gc_calculate_addresses_humong, " Humongous Objects") \
308 f(full_gc_adjust_pointers, " Adjust Pointers") \
309 f(full_gc_copy_objects, " Copy Objects") \
310 f(full_gc_copy_objects_regular, " Regular Objects") \
311 f(full_gc_copy_objects_humong, " Humongous Objects") \
312 f(full_gc_copy_objects_reset_complete, " Reset Complete Bitmap") \
313 f(full_gc_copy_objects_rebuild, " Rebuild Region Sets") \
314 f(full_gc_resize_tlabs, " Resize TLABs") \
315 \
316 /* Longer concurrent phases at the end */ \
317 f(conc_reset, "Concurrent Reset") \
318 f(conc_mark, "Concurrent Marking") \
319 f(conc_preclean, "Concurrent Precleaning") \
320 f(conc_roots, "Concurrent Roots") \
321 f(conc_evac, "Concurrent Evacuation") \
322 f(conc_update_refs, "Concurrent Update Refs") \
323 f(conc_cleanup, "Concurrent Cleanup") \
324 f(conc_traversal, "Concurrent Traversal") \
325 \
326 f(conc_uncommit, "Concurrent Uncommit") \
327 \
328 /* Unclassified */ \
329 f(pause_other, "Pause Other") \
330 f(conc_other, "Concurrent Other") \
331 // end
332
333 #define SHENANDOAH_GC_PAR_PHASE_DO(f) \
334 f(ThreadRoots, "Thread Roots (ms):") \
335 f(CodeCacheRoots, "CodeCache Roots (ms):") \
336 f(UniverseRoots, "Universe Roots (ms):") \
337 f(JNIRoots, "JNI Handles Roots (ms):") \
338 f(JVMTIWeakRoots, "JVMTI Weak Roots (ms):") \
339 f(JFRWeakRoots, "JFR Weak Roots (ms):") \
340 f(JNIWeakRoots, "JNI Weak Roots (ms):") \
341 f(StringTableRoots, "StringTable Roots(ms):") \
342 f(ResolvedMethodTableRoots, "Resolved Table Roots(ms):") \
343 f(VMGlobalRoots, "VM Global Roots(ms)") \
344 f(VMWeakRoots, "VM Weak Roots(ms)") \
345 f(ObjectSynchronizerRoots, "ObjectSynchronizer Roots (ms):") \
346 f(ManagementRoots, "Management Roots (ms):") \
347 f(SystemDictionaryRoots, "SystemDictionary Roots (ms):") \
348 f(CLDGRoots, "CLDG Roots (ms):") \
349 f(JVMTIRoots, "JVMTI Roots (ms):") \
350 f(StringDedupTableRoots, "String Dedup Table Roots (ms):") \
351 f(StringDedupQueueRoots, "String Dedup Queue Roots (ms):") \
352 f(FinishQueues, "Finish Queues (ms):") \
353 // end
354
355 class ShenandoahPhaseTimings : public CHeapObj<mtGC> {
356 public:
357 #define GC_PHASE_DECLARE_ENUM(type, title) type,
358
359 enum Phase {
360 SHENANDOAH_GC_PHASE_DO(GC_PHASE_DECLARE_ENUM)
361 _num_phases
362 };
363
364 // These are the subphases of GC phases (scan_roots, update_roots,
365 // init_evac, final_update_refs_roots and full_gc_roots).
366 // Make sure they are following this order.
367 enum GCParPhases {
368 SHENANDOAH_GC_PAR_PHASE_DO(GC_PHASE_DECLARE_ENUM)
369 GCParPhasesSentinel
370 };
371
372 #undef GC_PHASE_DECLARE_ENUM
373
374 private:
375 struct TimingData {
376 HdrSeq _secs;
377 double _start;
378 };
379
380 private:
381 TimingData _timing_data[_num_phases];
382 static const char* _phase_names[_num_phases];
383
384 ShenandoahWorkerTimings* _worker_times;
385
386 ShenandoahCollectorPolicy* _policy;
387
388 public:
389 ShenandoahPhaseTimings();
390
391 ShenandoahWorkerTimings* const worker_times() const { return _worker_times; }
392
393 // record phase start
394 void record_phase_start(Phase phase);
395 // record phase end and return elapsed time in seconds for the phase
396 void record_phase_end(Phase phase);
397 // record an elapsed time for the phase
398 void record_phase_time(Phase phase, double time);
399
400 void record_workers_start(Phase phase);
401 void record_workers_end(Phase phase);
402
403 static const char* phase_name(Phase phase) {
404 assert(phase >= 0 && phase < _num_phases, "Out of bound");
405 return _phase_names[phase];
406 }
407
408 void print_on(outputStream* out) const;
409
410 private:
411 void init_phase_names();
412 void print_summary_sd(outputStream* out, const char* str, const HdrSeq* seq) const;
413 };
414
415 class ShenandoahWorkerTimings : public CHeapObj<mtGC> {
416 private:
417 uint _max_gc_threads;
418 WorkerDataArray<double>* _gc_par_phases[ShenandoahPhaseTimings::GCParPhasesSentinel];
419
420 public:
421 ShenandoahWorkerTimings(uint max_gc_threads);
422
423 // record the time a phase took in seconds
424 void record_time_secs(ShenandoahPhaseTimings::GCParPhases phase, uint worker_i, double secs);
425
426 double average(uint i) const;
427 void reset(uint i);
428 void print() const;
429 };
430
431 #endif // SHARE_GC_SHENANDOAH_SHENANDOAHPHASETIMINGS_HPP