1 /*
2 * Copyright (c) 2017, 2021, Red Hat, Inc. All rights reserved.
3 * Copyright Amazon.com Inc. or its affiliates. All Rights Reserved.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 #ifndef SHARE_GC_SHENANDOAH_SHENANDOAHPHASETIMINGS_HPP
27 #define SHARE_GC_SHENANDOAH_SHENANDOAHPHASETIMINGS_HPP
28
29 #include "jfr/jfrEvents.hpp"
30 #include "gc/shenandoah/shenandoahNumberSeq.hpp"
31 #include "gc/shared/workerDataArray.hpp"
32 #include "memory/allocation.hpp"
33
34 class ShenandoahCollectorPolicy;
35 class outputStream;
36
37 #define SHENANDOAH_PAR_PHASE_DO(CNT_PREFIX, DESC_PREFIX, f) \
38 f(CNT_PREFIX ## TotalWork, DESC_PREFIX "<total>") \
39 f(CNT_PREFIX ## ThreadRoots, DESC_PREFIX "Thread Roots") \
40 f(CNT_PREFIX ## CodeCacheRoots, DESC_PREFIX "Code Cache Roots") \
41 f(CNT_PREFIX ## VMStrongRoots, DESC_PREFIX "VM Strong Roots") \
42 f(CNT_PREFIX ## VMWeakRoots, DESC_PREFIX "VM Weak Roots") \
43 f(CNT_PREFIX ## CLDGRoots, DESC_PREFIX "CLDG Roots") \
44 f(CNT_PREFIX ## CodeCacheUnload, DESC_PREFIX "Unload Code Caches") \
45 f(CNT_PREFIX ## CLDUnlink, DESC_PREFIX "Unlink CLDs") \
46 f(CNT_PREFIX ## WeakRefProc, DESC_PREFIX "Weak References") \
47 f(CNT_PREFIX ## ParallelMark, DESC_PREFIX "Parallel Mark") \
48 f(CNT_PREFIX ## ScanClusters, DESC_PREFIX "Scan Clusters") \
49 // end
50
51 #define SHENANDOAH_PHASE_DO(f) \
52 f(conc_reset, "Concurrent Reset") \
53 f(conc_reset_old, "Concurrent Reset (OLD)") \
54 f(init_mark_gross, "Pause Init Mark (G)") \
55 f(init_mark, "Pause Init Mark (N)") \
56 f(init_manage_tlabs, " Manage TLABs") \
57 f(init_swap_rset, " Swap Remembered Set") \
58 f(init_transfer_satb, " Transfer Old From SATB") \
59 f(init_update_region_states, " Update Region States") \
60 \
61 f(init_scan_rset, "Concurrent Scan Remembered Set") \
62 SHENANDOAH_PAR_PHASE_DO(init_scan_rset_, " RS: ", f) \
63 \
64 f(conc_mark_roots, "Concurrent Mark Roots ") \
65 SHENANDOAH_PAR_PHASE_DO(conc_mark_roots, " CMR: ", f) \
66 f(conc_mark, "Concurrent Marking") \
67 SHENANDOAH_PAR_PHASE_DO(conc_mark, " CM: ", f) \
68 \
69 f(final_mark_gross, "Pause Final Mark (G)") \
70 f(final_mark, "Pause Final Mark (N)") \
71 f(finish_mark, " Finish Mark") \
72 SHENANDOAH_PAR_PHASE_DO(finish_mark_, " FM: ", f) \
73 f(purge, " System Purge") \
74 SHENANDOAH_PAR_PHASE_DO(purge_cu_par_, " CU: ", f) \
75 f(purge_weak_par, " Weak Roots") \
76 SHENANDOAH_PAR_PHASE_DO(purge_weak_par_, " WR: ", f) \
77 f(final_update_region_states, " Update Region States") \
78 f(final_manage_labs, " Manage GC/TLABs") \
79 f(choose_cset, " Choose Collection Set") \
80 f(final_rebuild_freeset, " Rebuild Free Set") \
81 f(init_evac, " Initial Evacuation") \
82 SHENANDOAH_PAR_PHASE_DO(evac_, " E: ", f) \
83 \
84 f(conc_thread_roots, "Concurrent Thread Roots") \
85 SHENANDOAH_PAR_PHASE_DO(conc_thread_roots_, " CTR: ", f) \
86 f(conc_weak_refs, "Concurrent Weak References") \
87 SHENANDOAH_PAR_PHASE_DO(conc_weak_refs_, " CWRF: ", f) \
88 f(conc_weak_roots, "Concurrent Weak Roots") \
89 f(conc_weak_roots_work, " Roots") \
90 SHENANDOAH_PAR_PHASE_DO(conc_weak_roots_work_, " CWR: ", f) \
91 f(conc_weak_roots_rendezvous, " Rendezvous") \
92 f(conc_cleanup_early, "Concurrent Cleanup") \
93 f(conc_class_unload, "Concurrent Class Unloading") \
94 f(conc_class_unload_unlink, " Unlink Stale") \
95 f(conc_class_unload_unlink_sd, " System Dictionary") \
96 f(conc_class_unload_unlink_weak_klass, " Weak Class Links") \
97 f(conc_class_unload_unlink_code_roots, " Code Roots") \
98 f(conc_class_unload_rendezvous, " Rendezvous") \
99 f(conc_class_unload_purge, " Purge Unlinked") \
100 f(conc_class_unload_purge_coderoots, " Code Roots") \
101 f(conc_class_unload_purge_cldg, " CLDG") \
102 f(conc_class_unload_purge_ec, " Exception Caches") \
103 f(conc_strong_roots, "Concurrent Strong Roots") \
104 SHENANDOAH_PAR_PHASE_DO(conc_strong_roots_, " CSR: ", f) \
105 f(conc_evac, "Concurrent Evacuation") \
106 \
107 f(final_roots_gross, "Pause Final Roots (G)") \
108 f(final_roots, "Pause Final Roots (N)") \
109 \
110 f(init_update_refs_gross, "Pause Init Update Refs (G)") \
111 f(init_update_refs, "Pause Init Update Refs (N)") \
112 f(init_update_refs_manage_gclabs, " Manage GCLABs") \
113 \
114 f(conc_update_refs, "Concurrent Update Refs") \
115 f(conc_update_thread_roots, "Concurrent Update Thread Roots") \
116 \
117 f(final_update_refs_gross, "Pause Final Update Refs (G)") \
118 f(final_update_refs, "Pause Final Update Refs (N)") \
119 f(final_update_refs_finish_work, " Finish Work") \
120 f(final_update_refs_update_region_states, " Update Region States") \
121 f(final_update_refs_trash_cset, " Trash Collection Set") \
122 f(final_update_refs_rebuild_freeset, " Rebuild Free Set") \
123 \
124 f(conc_cleanup_complete, "Concurrent Cleanup") \
125 f(conc_coalesce_and_fill, "Concurrent Coalesce and Fill") \
126 SHENANDOAH_PAR_PHASE_DO(conc_coalesce_, " CC&F: ", f) \
127 \
128 f(degen_gc_gross, "Pause Degenerated GC (G)") \
129 f(degen_gc, "Pause Degenerated GC (N)") \
130 f(degen_gc_stw_mark, " Degen STW Mark") \
131 SHENANDOAH_PAR_PHASE_DO(degen_gc_stw_mark_, " DSM: ", f) \
132 f(degen_gc_mark, " Degen Mark") \
133 SHENANDOAH_PAR_PHASE_DO(degen_gc_mark_, " DM: ", f) \
134 f(degen_gc_purge, " System Purge") \
135 f(degen_gc_weakrefs, " Weak References") \
136 SHENANDOAH_PAR_PHASE_DO(degen_gc_weakrefs_p_, " WRP: ", f) \
137 f(degen_gc_purge_class_unload, " Unload Classes") \
138 SHENANDOAH_PAR_PHASE_DO(degen_gc_purge_cu_par_, " DCU: ", f) \
139 f(degen_gc_purge_weak_par, " Weak Roots") \
140 SHENANDOAH_PAR_PHASE_DO(degen_gc_purge_weak_p_, " DWR: ", f) \
141 f(degen_gc_purge_cldg, " CLDG") \
142 f(degen_gc_final_update_region_states, " Update Region States") \
143 f(degen_gc_final_manage_labs, " Manage GC/TLABs") \
144 f(degen_gc_choose_cset, " Choose Collection Set") \
145 f(degen_gc_final_rebuild_freeset, " Rebuild Free Set") \
146 f(degen_gc_stw_evac, " Evacuation") \
147 f(degen_gc_init_update_refs_manage_gclabs, " Manage GCLABs") \
148 f(degen_gc_updaterefs, " Update References") \
149 f(degen_gc_final_update_refs_finish_work, " Finish Work") \
150 f(degen_gc_final_update_refs_update_region_states," Update Region States") \
151 f(degen_gc_final_update_refs_trash_cset, " Trash Collection Set") \
152 f(degen_gc_final_update_refs_rebuild_freeset, " Rebuild Free Set") \
153 f(degen_gc_update_roots, " Degen Update Roots") \
154 SHENANDOAH_PAR_PHASE_DO(degen_gc_update_, " DU: ", f) \
155 f(degen_gc_cleanup_complete, " Cleanup") \
156 f(degen_gc_coalesce_and_fill, " Degen Coalesce and Fill") \
157 SHENANDOAH_PAR_PHASE_DO(degen_coalesce_, " DC&F", f) \
158 \
159 f(full_gc_gross, "Pause Full GC (G)") \
160 f(full_gc, "Pause Full GC (N)") \
161 f(full_gc_heapdump_pre, " Pre Heap Dump") \
162 f(full_gc_prepare, " Prepare") \
163 f(full_gc_update_roots, " Update Roots") \
164 SHENANDOAH_PAR_PHASE_DO(full_gc_update_roots_, " FU: ", f) \
165 f(full_gc_mark, " Mark") \
166 SHENANDOAH_PAR_PHASE_DO(full_gc_mark_, " FM: ", f) \
167 f(full_gc_purge, " System Purge") \
168 f(full_gc_weakrefs, " Weak References") \
169 SHENANDOAH_PAR_PHASE_DO(full_gc_weakrefs_p_, " WRP: ", f) \
170 f(full_gc_purge_class_unload, " Unload Classes") \
171 SHENANDOAH_PAR_PHASE_DO(full_gc_purge_cu_par_, " CU: ", f) \
172 f(full_gc_purge_weak_par, " Weak Roots") \
173 SHENANDOAH_PAR_PHASE_DO(full_gc_purge_weak_p_, " WR: ", f) \
174 f(full_gc_purge_cldg, " CLDG") \
175 f(full_gc_calculate_addresses, " Calculate Addresses") \
176 f(full_gc_calculate_addresses_regular, " Regular Objects") \
177 f(full_gc_calculate_addresses_humong, " Humongous Objects") \
178 f(full_gc_adjust_pointers, " Adjust Pointers") \
179 f(full_gc_adjust_roots, " Adjust Roots") \
180 SHENANDOAH_PAR_PHASE_DO(full_gc_adjust_roots_, " FA: ", f) \
181 f(full_gc_copy_objects, " Copy Objects") \
182 f(full_gc_copy_objects_regular, " Regular Objects") \
183 f(full_gc_copy_objects_humong, " Humongous Objects") \
184 f(full_gc_recompute_generation_usage, " Recompute generation usage") \
185 f(full_gc_copy_objects_reset_complete, " Reset Complete Bitmap") \
186 f(full_gc_copy_objects_rebuild, " Rebuild Region Sets") \
187 f(full_gc_reconstruct_remembered_set, " Reconstruct Remembered Set") \
188 f(full_gc_heapdump_post, " Post Heap Dump") \
189 \
190 f(conc_uncommit, "Concurrent Uncommit") \
191 f(pacing, "Pacing") \
192 \
193 f(heap_iteration_roots, "Heap Iteration") \
194 SHENANDOAH_PAR_PHASE_DO(heap_iteration_roots_, " HI: ", f) \
195 // end
196
197 typedef WorkerDataArray<double> ShenandoahWorkerData;
198
199 class ShenandoahPhaseTimings : public CHeapObj<mtGC> {
200 friend class ShenandoahGCPhase;
201 friend class ShenandoahWorkerTimingsTracker;
202 public:
203 #define SHENANDOAH_PHASE_DECLARE_ENUM(type, title) type,
204
205 enum Phase {
206 SHENANDOAH_PHASE_DO(SHENANDOAH_PHASE_DECLARE_ENUM)
207 _num_phases,
208 _invalid_phase = _num_phases
209 };
210
211 enum ParPhase {
212 SHENANDOAH_PAR_PHASE_DO(,, SHENANDOAH_PHASE_DECLARE_ENUM)
213 _num_par_phases
214 };
215
216 #undef SHENANDOAH_PHASE_DECLARE_ENUM
217
218 private:
219 uint _max_workers;
220 double _cycle_data[_num_phases];
221 HdrSeq _global_data[_num_phases];
222 static const char* _phase_names[_num_phases];
223
224 ShenandoahWorkerData* _worker_data[_num_phases];
225 ShenandoahCollectorPolicy* _policy;
226
227 static bool is_worker_phase(Phase phase);
228 static bool is_root_work_phase(Phase phase);
229
230 ShenandoahWorkerData* worker_data(Phase phase, ParPhase par_phase);
231 Phase worker_par_phase(Phase phase, ParPhase par_phase);
232
233 void set_cycle_data(Phase phase, double time);
234 static double uninitialized() { return -1; }
235
236 public:
237 ShenandoahPhaseTimings(uint max_workers);
238
239 void record_phase_time(Phase phase, double time);
240
241 void record_workers_start(Phase phase);
242 void record_workers_end(Phase phase);
243
244 void flush_par_workers_to_cycle();
245 void flush_cycle_to_global();
246
247 static const char* phase_name(Phase phase) {
248 assert(phase >= 0 && phase < _num_phases, "Out of bound");
249 return _phase_names[phase];
250 }
251
252 void print_cycle_on(outputStream* out) const;
253 void print_global_on(outputStream* out) const;
254 };
255
256 class ShenandoahWorkerTimingsTracker : public StackObj {
257 private:
258 ShenandoahPhaseTimings* const _timings;
259 ShenandoahPhaseTimings::Phase const _phase;
260 ShenandoahPhaseTimings::ParPhase const _par_phase;
261 uint const _worker_id;
262
263 double _start_time;
264 EventGCPhaseParallel _event;
265 public:
266 ShenandoahWorkerTimingsTracker(ShenandoahPhaseTimings::Phase phase,
267 ShenandoahPhaseTimings::ParPhase par_phase,
268 uint worker_id,
269 bool cumulative = false);
270 ~ShenandoahWorkerTimingsTracker();
271 };
272
273 #endif // SHARE_GC_SHENANDOAH_SHENANDOAHPHASETIMINGS_HPP