1 /*
2 * Copyright (c) 2017, 2020, 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 "jfr/jfrEvents.hpp"
29 #include "gc/shenandoah/shenandoahNumberSeq.hpp"
30 #include "gc/shared/workerDataArray.hpp"
31 #include "memory/allocation.hpp"
32
33 class ShenandoahCollectorPolicy;
34 class outputStream;
35
36 #define SHENANDOAH_PAR_PHASE_DO(CNT_PREFIX, DESC_PREFIX, f) \
37 f(CNT_PREFIX ## TotalWork, DESC_PREFIX "<total>") \
38 f(CNT_PREFIX ## ThreadRoots, DESC_PREFIX "Thread Roots") \
39 f(CNT_PREFIX ## CodeCacheRoots, DESC_PREFIX "Code Cache Roots") \
40 f(CNT_PREFIX ## UniverseRoots, DESC_PREFIX "Universe Roots") \
41 f(CNT_PREFIX ## JNIRoots, DESC_PREFIX "JNI Handles Roots") \
42 f(CNT_PREFIX ## JVMTIWeakRoots, DESC_PREFIX "JVMTI Weak Roots") \
43 f(CNT_PREFIX ## JFRWeakRoots, DESC_PREFIX "JFR Weak Roots") \
44 f(CNT_PREFIX ## JNIWeakRoots, DESC_PREFIX "JNI Weak Roots") \
45 f(CNT_PREFIX ## StringTableRoots, DESC_PREFIX "String Table Roots") \
46 f(CNT_PREFIX ## ResolvedMethodTableRoots, DESC_PREFIX "Resolved Table Roots") \
47 f(CNT_PREFIX ## VMGlobalRoots, DESC_PREFIX "VM Global Roots") \
48 f(CNT_PREFIX ## VMWeakRoots, DESC_PREFIX "VM Weak Roots") \
49 f(CNT_PREFIX ## ObjectSynchronizerRoots, DESC_PREFIX "Synchronizer Roots") \
50 f(CNT_PREFIX ## ManagementRoots, DESC_PREFIX "Management Roots") \
51 f(CNT_PREFIX ## SystemDictionaryRoots, DESC_PREFIX "System Dict Roots") \
52 f(CNT_PREFIX ## CLDGRoots, DESC_PREFIX "CLDG Roots") \
53 f(CNT_PREFIX ## JVMTIRoots, DESC_PREFIX "JVMTI Roots") \
54 f(CNT_PREFIX ## StringDedupTableRoots, DESC_PREFIX "Dedup Table Roots") \
55 f(CNT_PREFIX ## StringDedupQueueRoots, DESC_PREFIX "Dedup Queue Roots") \
56 f(CNT_PREFIX ## FinishQueues, DESC_PREFIX "Finish Queues") \
57 // end
58
59 #define SHENANDOAH_PHASE_DO(f) \
60 f(conc_reset, "Concurrent Reset") \
61 \
62 f(init_mark_gross, "Pause Init Mark (G)") \
63 f(init_mark, "Pause Init Mark (N)") \
64 f(make_parsable, " Make Parsable") \
65 f(init_update_region_states, " Update Region States") \
66 f(scan_roots, " Scan Roots") \
67 SHENANDOAH_PAR_PHASE_DO(scan_, " S: ", f) \
68 f(resize_tlabs, " Resize TLABs") \
69 \
70 f(conc_mark, "Concurrent Marking") \
71 f(conc_preclean, "Concurrent Precleaning") \
72 \
73 f(final_mark_gross, "Pause Final Mark (G)") \
74 f(final_mark, "Pause Final Mark (N)") \
75 f(update_roots, " Update Roots") \
76 SHENANDOAH_PAR_PHASE_DO(update_, " U: ", f) \
77 f(finish_queues, " Finish Queues") \
78 f(weakrefs, " Weak References") \
79 f(weakrefs_process, " Process") \
80 f(purge, " System Purge") \
81 f(purge_class_unload, " Unload Classes") \
82 SHENANDOAH_PAR_PHASE_DO(purge_cu_par_, " CU: ", f) \
83 f(purge_weak_par, " Weak Roots") \
84 SHENANDOAH_PAR_PHASE_DO(purge_weak_par_, " WR: ", f) \
85 f(purge_cldg, " CLDG") \
86 f(final_update_region_states, " Update Region States") \
87 f(retire_tlabs, " Retire TLABs") \
88 f(choose_cset, " Choose Collection Set") \
89 f(final_rebuild_freeset, " Rebuild Free Set") \
90 f(init_evac, " Initial Evacuation") \
91 SHENANDOAH_PAR_PHASE_DO(evac_, " E: ", f) \
92 \
93 f(conc_weak_roots, "Concurrent Weak Roots") \
94 f(conc_weak_roots_work, " Roots") \
95 SHENANDOAH_PAR_PHASE_DO(conc_weak_roots_work_, " CWR: ", f) \
96 f(conc_weak_roots_rendezvous, " Rendezvous") \
97 f(conc_cleanup_early, "Concurrent Cleanup") \
98 f(conc_class_unload, "Concurrent Class Unloading") \
99 f(conc_class_unload_unlink, " Unlink Stale") \
100 f(conc_class_unload_unlink_sd, " System Dictionary") \
101 f(conc_class_unload_unlink_weak_klass, " Weak Class Links") \
102 f(conc_class_unload_unlink_code_roots, " Code Roots") \
103 f(conc_class_unload_rendezvous, " Rendezvous") \
104 f(conc_class_unload_purge, " Purge Unlinked") \
105 f(conc_class_unload_purge_coderoots, " Code Roots") \
106 f(conc_class_unload_purge_cldg, " CLDG") \
107 f(conc_class_unload_purge_ec, " Exception Caches") \
108 f(conc_strong_roots, "Concurrent Strong Roots") \
109 SHENANDOAH_PAR_PHASE_DO(conc_strong_roots_, " CSR: ", f) \
110 f(conc_evac, "Concurrent Evacuation") \
111 \
112 f(init_update_refs_gross, "Pause Init Update Refs (G)") \
113 f(init_update_refs, "Pause Init Update Refs (N)") \
114 f(init_update_refs_retire_gclabs, " Retire GCLABs") \
115 \
116 f(conc_update_refs, "Concurrent Update Refs") \
117 \
118 f(final_update_refs_gross, "Pause Final Update Refs (G)") \
119 f(final_update_refs, "Pause Final Update Refs (N)") \
120 f(final_update_refs_finish_work, " Finish Work") \
121 f(final_update_refs_roots, " Update Roots") \
122 SHENANDOAH_PAR_PHASE_DO(final_update_, " UR: ", f) \
123 f(final_update_refs_update_region_states, " Update Region States") \
124 f(final_update_refs_trash_cset, " Trash Collection Set") \
125 f(final_update_refs_rebuild_freeset, " Rebuild Free Set") \
126 \
127 f(conc_cleanup_complete, "Concurrent Cleanup") \
128 \
129 f(degen_gc_gross, "Pause Degenerated GC (G)") \
130 f(degen_gc, "Pause Degenerated GC (N)") \
131 f(degen_gc_update_roots, " Degen Update Roots") \
132 SHENANDOAH_PAR_PHASE_DO(degen_gc_update_, " DU: ", f) \
133 \
134 f(full_gc_gross, "Pause Full GC (G)") \
135 f(full_gc, "Pause Full GC (N)") \
136 f(full_gc_heapdump_pre, " Pre Heap Dump") \
137 f(full_gc_prepare, " Prepare") \
138 f(full_gc_scan_roots, " Scan Roots") \
139 SHENANDOAH_PAR_PHASE_DO(full_gc_scan_roots_, " FS: ", f) \
140 f(full_gc_update_roots, " Update Roots") \
141 SHENANDOAH_PAR_PHASE_DO(full_gc_update_roots_, " FU: ", f) \
142 f(full_gc_mark, " Mark") \
143 f(full_gc_mark_finish_queues, " Finish Queues") \
144 f(full_gc_weakrefs, " Weak References") \
145 f(full_gc_weakrefs_process, " Process") \
146 f(full_gc_purge, " System Purge") \
147 f(full_gc_purge_class_unload, " Unload Classes") \
148 SHENANDOAH_PAR_PHASE_DO(full_gc_purge_cu_par_, " CU: ", f) \
149 f(full_gc_purge_weak_par, " Weak Roots") \
150 SHENANDOAH_PAR_PHASE_DO(full_gc_purge_weak_p_, " WR: ", f) \
151 f(full_gc_purge_cldg, " CLDG") \
152 f(full_gc_calculate_addresses, " Calculate Addresses") \
153 f(full_gc_calculate_addresses_regular, " Regular Objects") \
154 f(full_gc_calculate_addresses_humong, " Humongous Objects") \
155 f(full_gc_adjust_pointers, " Adjust Pointers") \
156 f(full_gc_adjust_roots, " Adjust Roots") \
157 SHENANDOAH_PAR_PHASE_DO(full_gc_adjust_roots_, " FA: ", f) \
158 f(full_gc_copy_objects, " Copy Objects") \
159 f(full_gc_copy_objects_regular, " Regular Objects") \
160 f(full_gc_copy_objects_humong, " Humongous Objects") \
161 f(full_gc_copy_objects_reset_complete, " Reset Complete Bitmap") \
162 f(full_gc_copy_objects_rebuild, " Rebuild Region Sets") \
163 f(full_gc_resize_tlabs, " Resize TLABs") \
164 f(full_gc_heapdump_post, " Post Heap Dump") \
165 \
166 f(conc_uncommit, "Concurrent Uncommit") \
167 \
168 f(heap_iteration_roots, "Heap Iteration") \
169 SHENANDOAH_PAR_PHASE_DO(heap_iteration_roots_, " HI: ", f) \
170 // end
171
172 typedef WorkerDataArray<double> ShenandoahWorkerData;
173
174 class ShenandoahPhaseTimings : public CHeapObj<mtGC> {
175 friend class ShenandoahGCPhase;
176 friend class ShenandoahWorkerTimingsTracker;
177 public:
178 #define SHENANDOAH_PHASE_DECLARE_ENUM(type, title) type,
179
180 enum Phase {
181 SHENANDOAH_PHASE_DO(SHENANDOAH_PHASE_DECLARE_ENUM)
182 _num_phases,
183 _invalid_phase = _num_phases
184 };
185
186 enum ParPhase {
187 SHENANDOAH_PAR_PHASE_DO(,, SHENANDOAH_PHASE_DECLARE_ENUM)
188 _num_par_phases
189 };
190
191 #undef SHENANDOAH_PHASE_DECLARE_ENUM
192
193 private:
194 uint _max_workers;
195 double _cycle_data[_num_phases];
196 HdrSeq _global_data[_num_phases];
197 static const char* _phase_names[_num_phases];
198
199 ShenandoahWorkerData* _worker_data[_num_phases];
200 ShenandoahCollectorPolicy* _policy;
201
202 static bool is_worker_phase(Phase phase);
203 static bool is_root_work_phase(Phase phase);
204
205 ShenandoahWorkerData* worker_data(Phase phase, ParPhase par_phase);
206 Phase worker_par_phase(Phase phase, ParPhase par_phase);
207
208 void set_cycle_data(Phase phase, double time);
209 static double uninitialized() { return -1; }
210
211 public:
212 ShenandoahPhaseTimings(uint max_workers);
213
214 void record_phase_time(Phase phase, double time);
215
216 void record_workers_start(Phase phase);
217 void record_workers_end(Phase phase);
218
219 void flush_par_workers_to_cycle();
220 void flush_cycle_to_global();
221
222 static const char* phase_name(Phase phase) {
223 assert(phase >= 0 && phase < _num_phases, "Out of bound");
224 return _phase_names[phase];
225 }
226
227 void print_cycle_on(outputStream* out) const;
228 void print_global_on(outputStream* out) const;
229 };
230
231 class ShenandoahWorkerTimingsTracker : public StackObj {
232 private:
233 ShenandoahPhaseTimings* const _timings;
234 ShenandoahPhaseTimings::Phase const _phase;
235 ShenandoahPhaseTimings::ParPhase const _par_phase;
236 uint const _worker_id;
237
238 double _start_time;
239 EventGCPhaseParallel _event;
240 public:
241 ShenandoahWorkerTimingsTracker(ShenandoahPhaseTimings::Phase phase, ShenandoahPhaseTimings::ParPhase par_phase, uint worker_id);
242 ~ShenandoahWorkerTimingsTracker();
243 };
244
245 #endif // SHARE_GC_SHENANDOAH_SHENANDOAHPHASETIMINGS_HPP