1 /*
2 * Copyright (c) 2013, 2019, 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 #include "precompiled.hpp"
26 #include "gc/g1/g1CollectedHeap.inline.hpp"
27 #include "gc/g1/g1GCPhaseTimes.hpp"
28 #include "gc/g1/g1HotCardCache.hpp"
29 #include "gc/g1/g1ParScanThreadState.inline.hpp"
30 #include "gc/g1/g1StringDedup.hpp"
31 #include "gc/shared/gcTimer.hpp"
32 #include "gc/shared/workerDataArray.inline.hpp"
33 #include "memory/resourceArea.hpp"
34 #include "logging/log.hpp"
35 #include "logging/logStream.hpp"
36 #include "runtime/timer.hpp"
37 #include "runtime/os.hpp"
38 #include "utilities/macros.hpp"
39
40 static const char* Indents[5] = {"", " ", " ", " ", " "};
41
42 G1GCPhaseTimes::G1GCPhaseTimes(STWGCTimer* gc_timer, uint max_gc_threads) :
43 _max_gc_threads(max_gc_threads),
44 _gc_start_counter(0),
45 _gc_pause_time_ms(0.0),
46 _ref_phase_times(gc_timer, max_gc_threads),
47 _weak_phase_times(max_gc_threads)
48 {
49 assert(max_gc_threads > 0, "Must have some GC threads");
50
51 _gc_par_phases[GCWorkerStart] = new WorkerDataArray<double>(max_gc_threads, "GC Worker Start (ms):");
52 _gc_par_phases[ExtRootScan] = new WorkerDataArray<double>(max_gc_threads, "Ext Root Scanning (ms):");
53
54 // Root scanning phases
55 _gc_par_phases[ThreadRoots] = new WorkerDataArray<double>(max_gc_threads, "Thread Roots (ms):");
56 _gc_par_phases[UniverseRoots] = new WorkerDataArray<double>(max_gc_threads, "Universe Roots (ms):");
57 _gc_par_phases[JNIRoots] = new WorkerDataArray<double>(max_gc_threads, "JNI Handles Roots (ms):");
58 _gc_par_phases[ObjectSynchronizerRoots] = new WorkerDataArray<double>(max_gc_threads, "ObjectSynchronizer Roots (ms):");
59 _gc_par_phases[ManagementRoots] = new WorkerDataArray<double>(max_gc_threads, "Management Roots (ms):");
60 _gc_par_phases[SystemDictionaryRoots] = new WorkerDataArray<double>(max_gc_threads, "SystemDictionary Roots (ms):");
61 _gc_par_phases[CLDGRoots] = new WorkerDataArray<double>(max_gc_threads, "CLDG Roots (ms):");
62 _gc_par_phases[JVMTIRoots] = new WorkerDataArray<double>(max_gc_threads, "JVMTI Roots (ms):");
63 AOT_ONLY(_gc_par_phases[AOTCodeRoots] = new WorkerDataArray<double>(max_gc_threads, "AOT Root Scan (ms):");)
64 _gc_par_phases[CMRefRoots] = new WorkerDataArray<double>(max_gc_threads, "CM RefProcessor Roots (ms):");
65 _gc_par_phases[WaitForStrongCLD] = new WorkerDataArray<double>(max_gc_threads, "Wait For Strong CLD (ms):");
66 _gc_par_phases[WeakCLDRoots] = new WorkerDataArray<double>(max_gc_threads, "Weak CLD Roots (ms):");
67
68 _gc_par_phases[MergeER] = new WorkerDataArray<double>(max_gc_threads, "Eager Reclaim (ms):");
69
70 _gc_par_phases[MergeRS] = new WorkerDataArray<double>(max_gc_threads, "Remembered Sets (ms):");
71 _merge_rs_merged_sparse = new WorkerDataArray<size_t>(max_gc_threads, "Merged Sparse:");
72 _gc_par_phases[MergeRS]->link_thread_work_items(_merge_rs_merged_sparse, MergeRSMergedSparse);
73 _merge_rs_merged_fine = new WorkerDataArray<size_t>(max_gc_threads, "Merged Fine:");
74 _gc_par_phases[MergeRS]->link_thread_work_items(_merge_rs_merged_fine, MergeRSMergedFine);
75 _merge_rs_merged_coarse = new WorkerDataArray<size_t>(max_gc_threads, "Merged Coarse:");
76 _gc_par_phases[MergeRS]->link_thread_work_items(_merge_rs_merged_coarse, MergeRSMergedCoarse);
77
78 _gc_par_phases[OptMergeRS] = new WorkerDataArray<double>(max_gc_threads, "Optional Remembered Sets (ms):");
79 _opt_merge_rs_merged_sparse = new WorkerDataArray<size_t>(max_gc_threads, "Merged Sparse:");
80 _gc_par_phases[OptMergeRS]->link_thread_work_items(_opt_merge_rs_merged_sparse, MergeRSMergedSparse);
81 _opt_merge_rs_merged_fine = new WorkerDataArray<size_t>(max_gc_threads, "Merged Fine:");
82 _gc_par_phases[OptMergeRS]->link_thread_work_items(_opt_merge_rs_merged_fine, MergeRSMergedFine);
83 _opt_merge_rs_merged_coarse = new WorkerDataArray<size_t>(max_gc_threads, "Merged Coarse:");
84 _gc_par_phases[OptMergeRS]->link_thread_work_items(_opt_merge_rs_merged_coarse, MergeRSMergedCoarse);
85
86 _gc_par_phases[MergeLB] = new WorkerDataArray<double>(max_gc_threads, "Log Buffers (ms):");
87 if (G1HotCardCache::default_use_cache()) {
88 _gc_par_phases[MergeHCC] = new WorkerDataArray<double>(max_gc_threads, "Hot Card Cache (ms):");
89 _merge_hcc_dirty_cards = new WorkerDataArray<size_t>(max_gc_threads, "Dirty Cards:");
90 _gc_par_phases[MergeHCC]->link_thread_work_items(_merge_hcc_dirty_cards, MergeHCCDirtyCards);
91 _merge_hcc_skipped_cards = new WorkerDataArray<size_t>(max_gc_threads, "Skipped Cards:");
92 _gc_par_phases[MergeHCC]->link_thread_work_items(_merge_hcc_skipped_cards, MergeHCCSkippedCards);
93 } else {
94 _gc_par_phases[MergeHCC] = NULL;
95 _merge_hcc_dirty_cards = NULL;
96 _merge_hcc_skipped_cards = NULL;
97 }
98 _gc_par_phases[ScanHR] = new WorkerDataArray<double>(max_gc_threads, "Scan Heap Roots (ms):");
99 _gc_par_phases[OptScanHR] = new WorkerDataArray<double>(max_gc_threads, "Optional Scan Heap Roots (ms):");
100 _gc_par_phases[CodeRoots] = new WorkerDataArray<double>(max_gc_threads, "Code Root Scan (ms):");
101 _gc_par_phases[OptCodeRoots] = new WorkerDataArray<double>(max_gc_threads, "Optional Code Root Scan (ms):");
102 _gc_par_phases[ObjCopy] = new WorkerDataArray<double>(max_gc_threads, "Object Copy (ms):");
103 _gc_par_phases[OptObjCopy] = new WorkerDataArray<double>(max_gc_threads, "Optional Object Copy (ms):");
104 _gc_par_phases[Termination] = new WorkerDataArray<double>(max_gc_threads, "Termination (ms):");
105 _gc_par_phases[OptTermination] = new WorkerDataArray<double>(max_gc_threads, "Optional Termination (ms):");
106 _gc_par_phases[GCWorkerTotal] = new WorkerDataArray<double>(max_gc_threads, "GC Worker Total (ms):");
107 _gc_par_phases[GCWorkerEnd] = new WorkerDataArray<double>(max_gc_threads, "GC Worker End (ms):");
108 _gc_par_phases[Other] = new WorkerDataArray<double>(max_gc_threads, "GC Worker Other (ms):");
109
110 _scan_hr_scanned_cards = new WorkerDataArray<size_t>(max_gc_threads, "Scanned Cards:");
111 _gc_par_phases[ScanHR]->link_thread_work_items(_scan_hr_scanned_cards, ScanHRScannedCards);
112 _scan_hr_scanned_blocks = new WorkerDataArray<size_t>(max_gc_threads, "Scanned Blocks:");
113 _gc_par_phases[ScanHR]->link_thread_work_items(_scan_hr_scanned_blocks, ScanHRScannedBlocks);
114 _scan_hr_claimed_chunks = new WorkerDataArray<size_t>(max_gc_threads, "Claimed Chunks:");
115 _gc_par_phases[ScanHR]->link_thread_work_items(_scan_hr_claimed_chunks, ScanHRClaimedChunks);
116
117 _opt_scan_hr_scanned_cards = new WorkerDataArray<size_t>(max_gc_threads, "Scanned Cards:");
118 _gc_par_phases[OptScanHR]->link_thread_work_items(_opt_scan_hr_scanned_cards, ScanHRScannedCards);
119 _opt_scan_hr_scanned_blocks = new WorkerDataArray<size_t>(max_gc_threads, "Scanned Blocks:");
120 _gc_par_phases[OptScanHR]->link_thread_work_items(_opt_scan_hr_scanned_blocks, ScanHRScannedBlocks);
121 _opt_scan_hr_claimed_chunks = new WorkerDataArray<size_t>(max_gc_threads, "Claimed Chunks:");
122 _gc_par_phases[OptScanHR]->link_thread_work_items(_opt_scan_hr_claimed_chunks, ScanHRClaimedChunks);
123 _opt_scan_hr_scanned_opt_refs = new WorkerDataArray<size_t>(max_gc_threads, "Scanned Refs:");
124 _gc_par_phases[OptScanHR]->link_thread_work_items(_opt_scan_hr_scanned_opt_refs, ScanHRScannedOptRefs);
125 _opt_scan_hr_used_memory = new WorkerDataArray<size_t>(max_gc_threads, "Used Memory:");
126 _gc_par_phases[OptScanHR]->link_thread_work_items(_opt_scan_hr_used_memory, ScanHRUsedMemory);
127
128 _merge_lb_dirty_cards = new WorkerDataArray<size_t>(max_gc_threads, "Dirty Cards:");
129 _gc_par_phases[MergeLB]->link_thread_work_items(_merge_lb_dirty_cards, MergeLBDirtyCards);
130 _merge_lb_skipped_cards = new WorkerDataArray<size_t>(max_gc_threads, "Skipped Cards:");
131 _gc_par_phases[MergeLB]->link_thread_work_items(_merge_lb_skipped_cards, MergeLBSkippedCards);
132
133 _obj_copy_lab_waste = new WorkerDataArray<size_t>(max_gc_threads, "LAB Waste");
134 _gc_par_phases[ObjCopy]->link_thread_work_items(_obj_copy_lab_waste, ObjCopyLABWaste);
135 _obj_copy_lab_undo_waste = new WorkerDataArray<size_t>(max_gc_threads, "LAB Undo Waste");
136 _gc_par_phases[ObjCopy]->link_thread_work_items(_obj_copy_lab_undo_waste, ObjCopyLABUndoWaste);
137
138 _opt_obj_copy_lab_waste = new WorkerDataArray<size_t>(max_gc_threads, "LAB Waste");
139 _gc_par_phases[OptObjCopy]->link_thread_work_items(_obj_copy_lab_waste, ObjCopyLABWaste);
140 _opt_obj_copy_lab_undo_waste = new WorkerDataArray<size_t>(max_gc_threads, "LAB Undo Waste");
141 _gc_par_phases[OptObjCopy]->link_thread_work_items(_obj_copy_lab_undo_waste, ObjCopyLABUndoWaste);
142
143 _termination_attempts = new WorkerDataArray<size_t>(max_gc_threads, "Termination Attempts:");
144 _gc_par_phases[Termination]->link_thread_work_items(_termination_attempts);
145
146 _opt_termination_attempts = new WorkerDataArray<size_t>(max_gc_threads, "Optional Termination Attempts:");
147 _gc_par_phases[OptTermination]->link_thread_work_items(_opt_termination_attempts);
148
149 if (UseStringDeduplication) {
150 _gc_par_phases[StringDedupQueueFixup] = new WorkerDataArray<double>(max_gc_threads, "Queue Fixup (ms):");
151 _gc_par_phases[StringDedupTableFixup] = new WorkerDataArray<double>(max_gc_threads, "Table Fixup (ms):");
152 } else {
153 _gc_par_phases[StringDedupQueueFixup] = NULL;
154 _gc_par_phases[StringDedupTableFixup] = NULL;
155 }
156
157 _gc_par_phases[RedirtyCards] = new WorkerDataArray<double>(max_gc_threads, "Parallel Redirty (ms):");
158 _redirtied_cards = new WorkerDataArray<size_t>(max_gc_threads, "Redirtied Cards:");
159 _gc_par_phases[RedirtyCards]->link_thread_work_items(_redirtied_cards);
160
161 _gc_par_phases[YoungFreeCSet] = new WorkerDataArray<double>(max_gc_threads, "Young Free Collection Set (ms):");
162 _gc_par_phases[NonYoungFreeCSet] = new WorkerDataArray<double>(max_gc_threads, "Non-Young Free Collection Set (ms):");
163
164 reset();
165 }
166
167 void G1GCPhaseTimes::reset() {
168 _cur_collection_initial_evac_time_ms = 0.0;
169 _cur_optional_evac_ms = 0.0;
170 _cur_collection_code_root_fixup_time_ms = 0.0;
171 _cur_strong_code_root_purge_time_ms = 0.0;
172 _cur_merge_heap_roots_time_ms = 0.0;
173 _cur_optional_merge_heap_roots_time_ms = 0.0;
174 _cur_prepare_merge_heap_roots_time_ms = 0.0;
175 _cur_optional_prepare_merge_heap_roots_time_ms = 0.0;
176 _cur_evac_fail_recalc_used = 0.0;
177 _cur_evac_fail_remove_self_forwards = 0.0;
178 _cur_string_deduplication_time_ms = 0.0;
179 _cur_prepare_tlab_time_ms = 0.0;
180 _cur_resize_tlab_time_ms = 0.0;
181 _cur_derived_pointer_table_update_time_ms = 0.0;
182 _cur_clear_ct_time_ms = 0.0;
183 _cur_expand_heap_time_ms = 0.0;
184 _cur_ref_proc_time_ms = 0.0;
185 _cur_collection_start_sec = 0.0;
186 _root_region_scan_wait_time_ms = 0.0;
187 _external_accounted_time_ms = 0.0;
188 _recorded_prepare_heap_roots_time_ms = 0.0;
189 _recorded_clear_claimed_marks_time_ms = 0.0;
190 _recorded_young_cset_choice_time_ms = 0.0;
191 _recorded_non_young_cset_choice_time_ms = 0.0;
192 _recorded_redirty_logged_cards_time_ms = 0.0;
193 _recorded_preserve_cm_referents_time_ms = 0.0;
194 _recorded_merge_pss_time_ms = 0.0;
195 _recorded_start_new_cset_time_ms = 0.0;
196 _recorded_total_free_cset_time_ms = 0.0;
197 _recorded_serial_free_cset_time_ms = 0.0;
198 _cur_fast_reclaim_humongous_time_ms = 0.0;
199 _cur_region_register_time = 0.0;
200 _cur_fast_reclaim_humongous_total = 0;
201 _cur_fast_reclaim_humongous_candidates = 0;
202 _cur_fast_reclaim_humongous_reclaimed = 0;
203 _cur_verify_before_time_ms = 0.0;
204 _cur_verify_after_time_ms = 0.0;
205
206 for (int i = 0; i < GCParPhasesSentinel; i++) {
207 if (_gc_par_phases[i] != NULL) {
208 _gc_par_phases[i]->reset();
209 }
210 }
211
212 _ref_phase_times.reset();
213 _weak_phase_times.reset();
214 }
215
216 void G1GCPhaseTimes::note_gc_start() {
217 _gc_start_counter = os::elapsed_counter();
218 reset();
219 }
220
221 #define ASSERT_PHASE_UNINITIALIZED(phase) \
222 assert(_gc_par_phases[phase] == NULL || _gc_par_phases[phase]->get(i) == uninitialized, "Phase " #phase " reported for thread that was not started");
223
224 double G1GCPhaseTimes::worker_time(GCParPhases phase, uint worker) {
225 if (_gc_par_phases[phase] == NULL) {
226 return 0.0;
227 }
228 double value = _gc_par_phases[phase]->get(worker);
229 if (value != WorkerDataArray<double>::uninitialized()) {
230 return value;
231 }
232 return 0.0;
233 }
234
235 void G1GCPhaseTimes::note_gc_end() {
236 _gc_pause_time_ms = TimeHelper::counter_to_millis(os::elapsed_counter() - _gc_start_counter);
237
238 double uninitialized = WorkerDataArray<double>::uninitialized();
239
240 for (uint i = 0; i < _max_gc_threads; i++) {
241 double worker_start = _gc_par_phases[GCWorkerStart]->get(i);
242 if (worker_start != uninitialized) {
243 assert(_gc_par_phases[GCWorkerEnd]->get(i) != uninitialized, "Worker started but not ended.");
244 double total_worker_time = _gc_par_phases[GCWorkerEnd]->get(i) - _gc_par_phases[GCWorkerStart]->get(i);
245 record_time_secs(GCWorkerTotal, i , total_worker_time);
246
247 double worker_known_time = worker_time(ExtRootScan, i) +
248 worker_time(ScanHR, i) +
249 worker_time(CodeRoots, i) +
250 worker_time(ObjCopy, i) +
251 worker_time(Termination, i);
252
253 record_time_secs(Other, i, total_worker_time - worker_known_time);
254 } else {
255 // Make sure all slots are uninitialized since this thread did not seem to have been started
256 ASSERT_PHASE_UNINITIALIZED(GCWorkerEnd);
257 ASSERT_PHASE_UNINITIALIZED(ExtRootScan);
258 ASSERT_PHASE_UNINITIALIZED(MergeER);
259 ASSERT_PHASE_UNINITIALIZED(MergeRS);
260 ASSERT_PHASE_UNINITIALIZED(OptMergeRS);
261 ASSERT_PHASE_UNINITIALIZED(MergeHCC);
262 ASSERT_PHASE_UNINITIALIZED(MergeLB);
263 ASSERT_PHASE_UNINITIALIZED(ScanHR);
264 ASSERT_PHASE_UNINITIALIZED(CodeRoots);
265 ASSERT_PHASE_UNINITIALIZED(OptCodeRoots);
266 ASSERT_PHASE_UNINITIALIZED(ObjCopy);
267 ASSERT_PHASE_UNINITIALIZED(OptObjCopy);
268 ASSERT_PHASE_UNINITIALIZED(Termination);
269 }
270 }
271 }
272
273 #undef ASSERT_PHASE_UNINITIALIZED
274
275 // record the time a phase took in seconds
276 void G1GCPhaseTimes::record_time_secs(GCParPhases phase, uint worker_i, double secs) {
277 _gc_par_phases[phase]->set(worker_i, secs);
278 }
279
280 // add a number of seconds to a phase
281 void G1GCPhaseTimes::add_time_secs(GCParPhases phase, uint worker_i, double secs) {
282 _gc_par_phases[phase]->add(worker_i, secs);
283 }
284
285 void G1GCPhaseTimes::record_or_add_time_secs(GCParPhases phase, uint worker_i, double secs) {
286 if (_gc_par_phases[phase]->get(worker_i) == _gc_par_phases[phase]->uninitialized()) {
287 record_time_secs(phase, worker_i, secs);
288 } else {
289 add_time_secs(phase, worker_i, secs);
290 }
291 }
292
293 double G1GCPhaseTimes::get_time_secs(GCParPhases phase, uint worker_i) {
294 return _gc_par_phases[phase]->get(worker_i);
295 }
296
297 void G1GCPhaseTimes::record_thread_work_item(GCParPhases phase, uint worker_i, size_t count, uint index) {
298 _gc_par_phases[phase]->set_thread_work_item(worker_i, count, index);
299 }
300
301 void G1GCPhaseTimes::record_or_add_thread_work_item(GCParPhases phase, uint worker_i, size_t count, uint index) {
302 _gc_par_phases[phase]->set_or_add_thread_work_item(worker_i, count, index);
303 }
304
305 size_t G1GCPhaseTimes::get_thread_work_item(GCParPhases phase, uint worker_i, uint index) {
306 return _gc_par_phases[phase]->get_thread_work_item(worker_i, index);
307 }
308
309 // return the average time for a phase in milliseconds
310 double G1GCPhaseTimes::average_time_ms(GCParPhases phase) {
311 return _gc_par_phases[phase]->average() * 1000.0;
312 }
313
314 size_t G1GCPhaseTimes::sum_thread_work_items(GCParPhases phase, uint index) {
315 assert(_gc_par_phases[phase]->thread_work_items(index) != NULL, "No sub count");
316 return _gc_par_phases[phase]->thread_work_items(index)->sum();
317 }
318
319 template <class T>
320 void G1GCPhaseTimes::details(T* phase, const char* indent) const {
321 LogTarget(Trace, gc, phases, task) lt;
322 if (lt.is_enabled()) {
323 LogStream ls(lt);
324 ls.print("%s", indent);
325 phase->print_details_on(&ls);
326 }
327 }
328
329 void G1GCPhaseTimes::log_phase(WorkerDataArray<double>* phase, uint indent, outputStream* out, bool print_sum) const {
330 out->print("%s", Indents[indent]);
331 phase->print_summary_on(out, print_sum);
332 details(phase, Indents[indent]);
333
334 for (uint i = 0; i < phase->MaxThreadWorkItems; i++) {
335 WorkerDataArray<size_t>* work_items = phase->thread_work_items(i);
336 if (work_items != NULL) {
337 out->print("%s", Indents[indent + 1]);
338 work_items->print_summary_on(out, true);
339 details(work_items, Indents[indent + 1]);
340 }
341 }
342 }
343
344 void G1GCPhaseTimes::debug_phase(WorkerDataArray<double>* phase, uint extra_indent) const {
345 LogTarget(Debug, gc, phases) lt;
346 if (lt.is_enabled()) {
347 ResourceMark rm;
348 LogStream ls(lt);
349 log_phase(phase, 2 + extra_indent, &ls, true);
350 }
351 }
352
353 void G1GCPhaseTimes::trace_phase(WorkerDataArray<double>* phase, bool print_sum) const {
354 LogTarget(Trace, gc, phases) lt;
355 if (lt.is_enabled()) {
356 LogStream ls(lt);
357 log_phase(phase, 3, &ls, print_sum);
358 }
359 }
360
361 #define TIME_FORMAT "%.1lfms"
362
363 void G1GCPhaseTimes::info_time(const char* name, double value) const {
364 log_info(gc, phases)("%s%s: " TIME_FORMAT, Indents[1], name, value);
365 }
366
367 void G1GCPhaseTimes::debug_time(const char* name, double value) const {
368 log_debug(gc, phases)("%s%s: " TIME_FORMAT, Indents[2], name, value);
369 }
370
371 void G1GCPhaseTimes::debug_time_for_reference(const char* name, double value) const {
372 LogTarget(Debug, gc, phases) lt;
373 LogTarget(Debug, gc, phases, ref) lt2;
374
375 if (lt.is_enabled()) {
376 LogStream ls(lt);
377 ls.print_cr("%s%s: " TIME_FORMAT, Indents[2], name, value);
378 } else if (lt2.is_enabled()) {
379 LogStream ls(lt2);
380 ls.print_cr("%s%s: " TIME_FORMAT, Indents[2], name, value);
381 }
382 }
383
384 void G1GCPhaseTimes::trace_time(const char* name, double value) const {
385 log_trace(gc, phases)("%s%s: " TIME_FORMAT, Indents[3], name, value);
386 }
387
388 void G1GCPhaseTimes::trace_count(const char* name, size_t value) const {
389 log_trace(gc, phases)("%s%s: " SIZE_FORMAT, Indents[3], name, value);
390 }
391
392 double G1GCPhaseTimes::print_pre_evacuate_collection_set() const {
393 const double sum_ms = _root_region_scan_wait_time_ms +
394 _recorded_young_cset_choice_time_ms +
395 _recorded_non_young_cset_choice_time_ms +
396 _cur_region_register_time +
397 _recorded_prepare_heap_roots_time_ms +
398 _recorded_clear_claimed_marks_time_ms;
399
400 info_time("Pre Evacuate Collection Set", sum_ms);
401
402 if (_root_region_scan_wait_time_ms > 0.0) {
403 debug_time("Root Region Scan Waiting", _root_region_scan_wait_time_ms);
404 }
405 debug_time("Prepare TLABs", _cur_prepare_tlab_time_ms);
406 debug_time("Choose Collection Set", (_recorded_young_cset_choice_time_ms + _recorded_non_young_cset_choice_time_ms));
407 debug_time("Region Register", _cur_region_register_time);
408 if (G1EagerReclaimHumongousObjects) {
409 trace_count("Humongous Total", _cur_fast_reclaim_humongous_total);
410 trace_count("Humongous Candidate", _cur_fast_reclaim_humongous_candidates);
411 }
412
413 debug_time("Prepare Heap Roots", _recorded_prepare_heap_roots_time_ms);
414 if (_recorded_clear_claimed_marks_time_ms > 0.0) {
415 debug_time("Clear Claimed Marks", _recorded_clear_claimed_marks_time_ms);
416 }
417 return sum_ms;
418 }
419
420 double G1GCPhaseTimes::print_evacuate_optional_collection_set() const {
421 const double sum_ms = _cur_optional_evac_ms + _cur_optional_merge_heap_roots_time_ms;
422 if (sum_ms > 0) {
423 info_time("Merge Optional Heap Roots", _cur_optional_merge_heap_roots_time_ms);
424
425 debug_time("Prepare Optional Merge Heap Roots", _cur_optional_prepare_merge_heap_roots_time_ms);
426 debug_phase(_gc_par_phases[OptMergeRS]);
427
428 info_time("Evacuate Optional Collection Set", _cur_optional_evac_ms);
429 debug_phase(_gc_par_phases[OptScanHR]);
430 debug_phase(_gc_par_phases[OptObjCopy]);
431 debug_phase(_gc_par_phases[OptCodeRoots]);
432 debug_phase(_gc_par_phases[OptTermination]);
433 }
434 return sum_ms;
435 }
436
437 double G1GCPhaseTimes::print_evacuate_initial_collection_set() const {
438 info_time("Merge Heap Roots", _cur_merge_heap_roots_time_ms);
439
440 debug_time("Prepare Merge Heap Roots", _cur_prepare_merge_heap_roots_time_ms);
441 debug_phase(_gc_par_phases[MergeER]);
442 debug_phase(_gc_par_phases[MergeRS]);
443 if (G1HotCardCache::default_use_cache()) {
444 debug_phase(_gc_par_phases[MergeHCC]);
445 }
446 debug_phase(_gc_par_phases[MergeLB]);
447
448 info_time("Evacuate Collection Set", _cur_collection_initial_evac_time_ms);
449
450 trace_phase(_gc_par_phases[GCWorkerStart], false);
451 debug_phase(_gc_par_phases[ExtRootScan]);
452 for (int i = ExtRootScanSubPhasesFirst; i <= ExtRootScanSubPhasesLast; i++) {
453 trace_phase(_gc_par_phases[i]);
454 }
455 debug_phase(_gc_par_phases[ScanHR]);
456 debug_phase(_gc_par_phases[CodeRoots]);
457 debug_phase(_gc_par_phases[ObjCopy]);
458 debug_phase(_gc_par_phases[Termination]);
459 debug_phase(_gc_par_phases[Other]);
460 debug_phase(_gc_par_phases[GCWorkerTotal]);
461 trace_phase(_gc_par_phases[GCWorkerEnd], false);
462
463 return _cur_collection_initial_evac_time_ms + _cur_merge_heap_roots_time_ms;
464 }
465
466 double G1GCPhaseTimes::print_post_evacuate_collection_set() const {
467 const double evac_fail_handling = _cur_evac_fail_recalc_used +
468 _cur_evac_fail_remove_self_forwards;
469 const double sum_ms = evac_fail_handling +
470 _cur_collection_code_root_fixup_time_ms +
471 _recorded_preserve_cm_referents_time_ms +
472 _cur_ref_proc_time_ms +
473 (_weak_phase_times.total_time_sec() * MILLIUNITS) +
474 _cur_clear_ct_time_ms +
475 _recorded_merge_pss_time_ms +
476 _cur_strong_code_root_purge_time_ms +
477 _recorded_redirty_logged_cards_time_ms +
478 _recorded_total_free_cset_time_ms +
479 _cur_fast_reclaim_humongous_time_ms +
480 _cur_expand_heap_time_ms +
481 _cur_string_deduplication_time_ms;
482
483 info_time("Post Evacuate Collection Set", sum_ms);
484
485 debug_time("Code Roots Fixup", _cur_collection_code_root_fixup_time_ms);
486
487 debug_time("Clear Card Table", _cur_clear_ct_time_ms);
488
489 debug_time_for_reference("Reference Processing", _cur_ref_proc_time_ms);
490 _ref_phase_times.print_all_references(2, false);
491 _weak_phase_times.log_print(2);
492
493 if (G1StringDedup::is_enabled()) {
494 debug_time("String Deduplication", _cur_string_deduplication_time_ms);
495 debug_phase(_gc_par_phases[StringDedupQueueFixup], 1);
496 debug_phase(_gc_par_phases[StringDedupTableFixup], 1);
497 }
498
499 if (G1CollectedHeap::heap()->evacuation_failed()) {
500 debug_time("Evacuation Failure", evac_fail_handling);
501 trace_time("Recalculate Used", _cur_evac_fail_recalc_used);
502 trace_time("Remove Self Forwards",_cur_evac_fail_remove_self_forwards);
503 }
504
505 debug_time("Merge Per-Thread State", _recorded_merge_pss_time_ms);
506 debug_time("Code Roots Purge", _cur_strong_code_root_purge_time_ms);
507
508 debug_time("Redirty Cards", _recorded_redirty_logged_cards_time_ms);
509 trace_phase(_gc_par_phases[RedirtyCards]);
510 #if COMPILER2_OR_JVMCI
511 debug_time("DerivedPointerTable Update", _cur_derived_pointer_table_update_time_ms);
512 #endif
513
514 debug_time("Free Collection Set", _recorded_total_free_cset_time_ms);
515 trace_time("Free Collection Set Serial", _recorded_serial_free_cset_time_ms);
516 trace_phase(_gc_par_phases[YoungFreeCSet]);
517 trace_phase(_gc_par_phases[NonYoungFreeCSet]);
518
519 if (G1EagerReclaimHumongousObjects) {
520 debug_time("Humongous Reclaim", _cur_fast_reclaim_humongous_time_ms);
521 trace_count("Humongous Reclaimed", _cur_fast_reclaim_humongous_reclaimed);
522 }
523 debug_time("Start New Collection Set", _recorded_start_new_cset_time_ms);
524 if (UseTLAB && ResizeTLAB) {
525 debug_time("Resize TLABs", _cur_resize_tlab_time_ms);
526 }
527 debug_time("Expand Heap After Collection", _cur_expand_heap_time_ms);
528
529
530 return sum_ms;
531 }
532
533 void G1GCPhaseTimes::print_other(double accounted_ms) const {
534 info_time("Other", _gc_pause_time_ms - accounted_ms);
535 }
536
537 void G1GCPhaseTimes::print() {
538 note_gc_end();
539
540 if (_cur_verify_before_time_ms > 0.0) {
541 debug_time("Verify Before", _cur_verify_before_time_ms);
542 }
543
544 double accounted_ms = 0.0;
545 accounted_ms += print_pre_evacuate_collection_set();
546 accounted_ms += print_evacuate_initial_collection_set();
547 accounted_ms += print_evacuate_optional_collection_set();
548 accounted_ms += print_post_evacuate_collection_set();
549 print_other(accounted_ms);
550
551 if (_cur_verify_after_time_ms > 0.0) {
552 debug_time("Verify After", _cur_verify_after_time_ms);
553 }
554 }
555
556 const char* G1GCPhaseTimes::phase_name(GCParPhases phase) {
557 static const char* names[] = {
558 "GCWorkerStart",
559 "ExtRootScan",
560 "ThreadRoots",
561 "UniverseRoots",
562 "JNIRoots",
563 "ObjectSynchronizerRoots",
564 "ManagementRoots",
565 "SystemDictionaryRoots",
566 "CLDGRoots",
567 "JVMTIRoots",
568 AOT_ONLY("AOTCodeRoots" COMMA)
569 "CMRefRoots",
570 "WaitForStrongCLD",
571 "WeakCLDRoots",
572 "MergeER",
573 "MergeRS",
574 "OptMergeRS",
575 "MergeLB",
576 "MergeHCC",
577 "ScanHR",
578 "OptScanHR",
579 "CodeRoots",
580 "OptCodeRoots",
581 "ObjCopy",
582 "OptObjCopy",
583 "Termination",
584 "OptTermination",
585 "Other",
586 "GCWorkerTotal",
587 "GCWorkerEnd",
588 "StringDedupQueueFixup",
589 "StringDedupTableFixup",
590 "RedirtyCards",
591 "YoungFreeCSet",
592 "NonYoungFreeCSet"
593 //GCParPhasesSentinel only used to tell end of enum
594 };
595
596 STATIC_ASSERT(ARRAY_SIZE(names) == G1GCPhaseTimes::GCParPhasesSentinel); // GCParPhases enum and corresponding string array should have the same "length", this tries to assert it
597
598 return names[phase];
599 }
600
601 G1EvacPhaseWithTrimTimeTracker::G1EvacPhaseWithTrimTimeTracker(G1ParScanThreadState* pss, Tickspan& total_time, Tickspan& trim_time) :
602 _pss(pss),
603 _start(Ticks::now()),
604 _total_time(total_time),
605 _trim_time(trim_time),
606 _stopped(false) {
607
608 assert(_pss->trim_ticks().value() == 0, "Possibly remaining trim ticks left over from previous use");
609 }
610
611 G1EvacPhaseWithTrimTimeTracker::~G1EvacPhaseWithTrimTimeTracker() {
612 if (!_stopped) {
613 stop();
614 }
615 }
616
617 void G1EvacPhaseWithTrimTimeTracker::stop() {
618 assert(!_stopped, "Should only be called once");
619 _total_time += (Ticks::now() - _start) - _pss->trim_ticks();
620 _trim_time += _pss->trim_ticks();
621 _pss->reset_trim_ticks();
622 _stopped = true;
623 }
624
625 G1GCParPhaseTimesTracker::G1GCParPhaseTimesTracker(G1GCPhaseTimes* phase_times, G1GCPhaseTimes::GCParPhases phase, uint worker_id, bool must_record) :
626 _start_time(), _phase(phase), _phase_times(phase_times), _worker_id(worker_id), _event(), _must_record(must_record) {
627 if (_phase_times != NULL) {
628 _start_time = Ticks::now();
629 }
630 }
631
632 G1GCParPhaseTimesTracker::~G1GCParPhaseTimesTracker() {
633 if (_phase_times != NULL) {
634 if (_must_record) {
635 _phase_times->record_time_secs(_phase, _worker_id, (Ticks::now() - _start_time).seconds());
636 } else {
637 _phase_times->record_or_add_time_secs(_phase, _worker_id, (Ticks::now() - _start_time).seconds());
638 }
639 _event.commit(GCId::current(), _worker_id, G1GCPhaseTimes::phase_name(_phase));
640 }
641 }
642
643 G1EvacPhaseTimesTracker::G1EvacPhaseTimesTracker(G1GCPhaseTimes* phase_times,
644 G1ParScanThreadState* pss,
645 G1GCPhaseTimes::GCParPhases phase,
646 uint worker_id) :
647 G1GCParPhaseTimesTracker(phase_times, phase, worker_id),
648 _total_time(),
649 _trim_time(),
650 _trim_tracker(pss, _total_time, _trim_time) {
651 }
652
653 G1EvacPhaseTimesTracker::~G1EvacPhaseTimesTracker() {
654 if (_phase_times != NULL) {
655 // Explicitly stop the trim tracker since it's not yet destructed.
656 _trim_tracker.stop();
657 // Exclude trim time by increasing the start time.
658 _start_time += _trim_time;
659 _phase_times->record_or_add_time_secs(G1GCPhaseTimes::ObjCopy, _worker_id, _trim_time.seconds());
660 }
661 }
662