1 /*
2 * Copyright (c) 2012, 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_IMPLEMENTATION_G1_G1GCPHASETIMESLOG_HPP
26 #define SHARE_VM_GC_IMPLEMENTATION_G1_G1GCPHASETIMESLOG_HPP
27
28 #include "memory/allocation.hpp"
29 #include "gc_interface/gcCause.hpp"
30
31 class G1GCPhaseTimes : public CHeapObj<mtGC> {
32 friend class G1CollectorPolicy;
33 friend class TraceGen0TimeData;
34
35 private:
36 uint _active_gc_threads;
37 uint _max_gc_threads;
38
39 GCCause::Cause _gc_cause;
40 bool _is_young_gc;
41 bool _is_initial_mark_gc;
42
43 double _pause_start_time_sec;
44
45 double* _par_last_gc_worker_start_times_ms;
46 double* _par_last_ext_root_scan_times_ms;
47 double* _par_last_satb_filtering_times_ms;
48 double* _par_last_update_rs_times_ms;
49 double* _par_last_update_rs_processed_buffers;
50 double* _par_last_scan_rs_times_ms;
51 double* _par_last_obj_copy_times_ms;
52 double* _par_last_termination_times_ms;
53 double* _par_last_termination_attempts;
54 double* _par_last_gc_worker_end_times_ms;
55 double* _par_last_gc_worker_times_ms;
56 double* _par_last_gc_worker_other_times_ms;
57
58 double _cur_collection_par_time_ms;
59
60 double _cur_collection_code_root_fixup_time_ms;
61
62 double _cur_clear_ct_time_ms;
63 double _cur_ref_proc_time_ms;
64 double _cur_ref_enq_time_ms;
65
66 // Helper methods for detailed logging
67 void print_par_stats(int level, const char* str, double* data, bool showDecimals = true);
68 void print_stats(int level, const char* str, double value);
69 void print_stats(int level, const char* str, double value, int workers);
70 void print_stats(int level, const char* str, int value);
71 double avg_value(double* data);
72 double max_value(double* data);
73 double sum_of_values(double* data);
74 double max_sum(double* data1, double* data2);
75 double accounted_time_ms();
76
77 // Card Table Count Cache stats
78 double _min_clear_cc_time_ms; // min
79 double _max_clear_cc_time_ms; // max
80 double _cur_clear_cc_time_ms; // clearing time during current pause
81 double _cum_clear_cc_time_ms; // cummulative clearing time
82 jlong _num_cc_clears; // number of times the card count cache has been cleared
83
84 // The following insance variables are directly accessed by G1CollectorPolicy
85 // and TraceGen0TimeData. This is why those classes are declared friends.
86 // An alternative is to add getters and setters for all of these fields.
87 // It might also be possible to restructure the code to reduce these
88 // dependencies.
89 double _ext_root_scan_time;
90 double _satb_filtering_time;
91 double _update_rs_time;
92 double _update_rs_processed_buffers;
93 double _scan_rs_time;
94 double _obj_copy_time;
95 double _termination_time;
96
97 double _cur_collection_start_sec;
98 double _root_region_scan_wait_time_ms;
99
100 double _recorded_young_cset_choice_time_ms;
101 double _recorded_non_young_cset_choice_time_ms;
102
103 double _recorded_young_free_cset_time_ms;
104 double _recorded_non_young_free_cset_time_ms;
105
106 void print(double pause_time_ms);
107
108 public:
109 G1GCPhaseTimes(uint max_gc_threads);
110 void note_gc_start(double pause_start_time_sec, uint active_gc_threads,
111 bool is_young_gc, bool is_initial_mark_gc, GCCause::Cause gc_cause);
112 void note_gc_end(double pause_end_time_sec);
113 void collapse_par_times();
114
115 void record_gc_worker_start_time(uint worker_i, double ms) {
116 assert(worker_i >= 0, "worker index must be > 0");
117 assert(worker_i < _active_gc_threads, "worker index out of bounds");
118 _par_last_gc_worker_start_times_ms[worker_i] = ms;
119 }
120
121 void record_ext_root_scan_time(uint worker_i, double ms) {
122 assert(worker_i >= 0, "worker index must be > 0");
123 assert(worker_i < _active_gc_threads, "worker index out of bounds");
124 _par_last_ext_root_scan_times_ms[worker_i] = ms;
125 }
126
127 void record_satb_filtering_time(uint worker_i, double ms) {
128 assert(worker_i >= 0, "worker index must be > 0");
129 assert(worker_i < _active_gc_threads, "worker index out of bounds");
130 _par_last_satb_filtering_times_ms[worker_i] = ms;
131 }
132
133 void record_update_rs_time(uint worker_i, double ms) {
134 assert(worker_i >= 0, "worker index must be > 0");
135 assert(worker_i < _active_gc_threads, "worker index out of bounds");
136 _par_last_update_rs_times_ms[worker_i] = ms;
137 }
138
139 void record_update_rs_processed_buffers (uint worker_i,
140 double processed_buffers) {
141 assert(worker_i >= 0, "worker index must be > 0");
142 assert(worker_i < _active_gc_threads, "worker index out of bounds");
143 _par_last_update_rs_processed_buffers[worker_i] = processed_buffers;
144 }
145
146 void record_scan_rs_time(uint worker_i, double ms) {
147 assert(worker_i >= 0, "worker index must be > 0");
148 assert(worker_i < _active_gc_threads, "worker index out of bounds");
149 _par_last_scan_rs_times_ms[worker_i] = ms;
150 }
151
152 void reset_obj_copy_time(uint worker_i) {
153 assert(worker_i >= 0, "worker index must be > 0");
154 assert(worker_i < _active_gc_threads, "worker index out of bounds");
155 _par_last_obj_copy_times_ms[worker_i] = 0.0;
156 }
157
158 void reset_obj_copy_time() {
159 reset_obj_copy_time(0);
160 }
161
162 void record_obj_copy_time(uint worker_i, double ms) {
163 assert(worker_i >= 0, "worker index must be > 0");
164 assert(worker_i < _active_gc_threads, "worker index out of bounds");
165 _par_last_obj_copy_times_ms[worker_i] += ms;
166 }
167
168 void record_termination(uint worker_i, double ms, size_t attempts) {
169 assert(worker_i >= 0, "worker index must be > 0");
170 assert(worker_i < _active_gc_threads, "worker index out of bounds");
171 _par_last_termination_times_ms[worker_i] = ms;
172 _par_last_termination_attempts[worker_i] = (double) attempts;
173 }
174
175 void record_gc_worker_end_time(uint worker_i, double ms) {
176 assert(worker_i >= 0, "worker index must be > 0");
177 assert(worker_i < _active_gc_threads, "worker index out of bounds");
178 _par_last_gc_worker_end_times_ms[worker_i] = ms;
179 }
180
181 void record_clear_ct_time(double ms) {
182 _cur_clear_ct_time_ms = ms;
183 }
184
185 void record_par_time(double ms) {
186 _cur_collection_par_time_ms = ms;
187 }
188
189 void record_code_root_fixup_time(double ms) {
190 _cur_collection_code_root_fixup_time_ms = ms;
191 }
192
193 void record_ref_proc_time(double ms) {
194 _cur_ref_proc_time_ms = ms;
195 }
196
197 void record_ref_enq_time(double ms) {
198 _cur_ref_enq_time_ms = ms;
199 }
200
201 void record_root_region_scan_wait_time(double time_ms) {
202 _root_region_scan_wait_time_ms = time_ms;
203 }
204
205 void record_cc_clear_time_ms(double ms);
206
207 void record_young_free_cset_time_ms(double time_ms) {
208 _recorded_young_free_cset_time_ms = time_ms;
209 }
210
211 void record_non_young_free_cset_time_ms(double time_ms) {
212 _recorded_non_young_free_cset_time_ms = time_ms;
213 }
214 };
215
216 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1GCPHASETIMESLOG_HPP