Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/shared/gcTimer.cpp @ 19083:09292c24d555
LSStackSlotAllocator: hide inner class.
author | Josef Eisl <josef.eisl@jku.at> |
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date | Sat, 31 Jan 2015 11:07:15 +0100 |
parents | 86e6d691f2e1 |
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rev | line source |
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10405 | 1 /* |
2 * Copyright (c) 2012, 2013, 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_implementation/shared/gcTimer.hpp" | |
27 #include "utilities/growableArray.hpp" | |
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28 #include "utilities/ticks.inline.hpp" |
10405 | 29 |
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30 // the "time" parameter for most functions |
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31 // has a default value set by Ticks::now() |
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32 |
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33 void GCTimer::register_gc_start(const Ticks& time) { |
10405 | 34 _time_partitions.clear(); |
35 _gc_start = time; | |
36 } | |
37 | |
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38 void GCTimer::register_gc_end(const Ticks& time) { |
10405 | 39 assert(!_time_partitions.has_active_phases(), |
40 "We should have ended all started phases, before ending the GC"); | |
41 | |
42 _gc_end = time; | |
43 } | |
44 | |
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45 void GCTimer::register_gc_pause_start(const char* name, const Ticks& time) { |
10405 | 46 _time_partitions.report_gc_phase_start(name, time); |
47 } | |
48 | |
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49 void GCTimer::register_gc_pause_end(const Ticks& time) { |
10405 | 50 _time_partitions.report_gc_phase_end(time); |
51 } | |
52 | |
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53 void GCTimer::register_gc_phase_start(const char* name, const Ticks& time) { |
10405 | 54 _time_partitions.report_gc_phase_start(name, time); |
55 } | |
56 | |
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57 void GCTimer::register_gc_phase_end(const Ticks& time) { |
10405 | 58 _time_partitions.report_gc_phase_end(time); |
59 } | |
60 | |
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61 void STWGCTimer::register_gc_start(const Ticks& time) { |
10405 | 62 GCTimer::register_gc_start(time); |
63 register_gc_pause_start("GC Pause", time); | |
64 } | |
65 | |
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66 void STWGCTimer::register_gc_end(const Ticks& time) { |
10405 | 67 register_gc_pause_end(time); |
68 GCTimer::register_gc_end(time); | |
69 } | |
70 | |
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71 void ConcurrentGCTimer::register_gc_pause_start(const char* name) { |
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72 GCTimer::register_gc_pause_start(name); |
10405 | 73 } |
74 | |
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75 void ConcurrentGCTimer::register_gc_pause_end() { |
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76 GCTimer::register_gc_pause_end(); |
10405 | 77 } |
78 | |
79 void PhasesStack::clear() { | |
80 _next_phase_level = 0; | |
81 } | |
82 | |
83 void PhasesStack::push(int phase_index) { | |
84 assert(_next_phase_level < PHASE_LEVELS, "Overflow"); | |
85 | |
86 _phase_indices[_next_phase_level] = phase_index; | |
87 | |
88 _next_phase_level++; | |
89 } | |
90 | |
91 int PhasesStack::pop() { | |
92 assert(_next_phase_level > 0, "Underflow"); | |
93 | |
94 _next_phase_level--; | |
95 | |
96 return _phase_indices[_next_phase_level]; | |
97 } | |
98 | |
99 int PhasesStack::count() const { | |
100 return _next_phase_level; | |
101 } | |
102 | |
103 | |
104 TimePartitions::TimePartitions() { | |
105 _phases = new (ResourceObj::C_HEAP, mtGC) GrowableArray<PausePhase>(INITIAL_CAPACITY, true, mtGC); | |
106 clear(); | |
107 } | |
108 | |
109 TimePartitions::~TimePartitions() { | |
110 delete _phases; | |
111 _phases = NULL; | |
112 } | |
113 | |
114 void TimePartitions::clear() { | |
115 _phases->clear(); | |
116 _active_phases.clear(); | |
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117 _sum_of_pauses = Tickspan(); |
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118 _longest_pause = Tickspan(); |
10405 | 119 } |
120 | |
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121 void TimePartitions::report_gc_phase_start(const char* name, const Ticks& time) { |
10405 | 122 assert(_phases->length() <= 1000, "Too many recored phases?"); |
123 | |
124 int level = _active_phases.count(); | |
125 | |
126 PausePhase phase; | |
127 phase.set_level(level); | |
128 phase.set_name(name); | |
129 phase.set_start(time); | |
130 | |
131 int index = _phases->append(phase); | |
132 | |
133 _active_phases.push(index); | |
134 } | |
135 | |
136 void TimePartitions::update_statistics(GCPhase* phase) { | |
137 // FIXME: This should only be done for pause phases | |
138 if (phase->level() == 0) { | |
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139 const Tickspan pause = phase->end() - phase->start(); |
10405 | 140 _sum_of_pauses += pause; |
141 _longest_pause = MAX2(pause, _longest_pause); | |
142 } | |
143 } | |
144 | |
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145 void TimePartitions::report_gc_phase_end(const Ticks& time) { |
10405 | 146 int phase_index = _active_phases.pop(); |
147 GCPhase* phase = _phases->adr_at(phase_index); | |
148 phase->set_end(time); | |
149 update_statistics(phase); | |
150 } | |
151 | |
152 int TimePartitions::num_phases() const { | |
153 return _phases->length(); | |
154 } | |
155 | |
156 GCPhase* TimePartitions::phase_at(int index) const { | |
157 assert(index >= 0, "Out of bounds"); | |
158 assert(index < _phases->length(), "Out of bounds"); | |
159 | |
160 return _phases->adr_at(index); | |
161 } | |
162 | |
163 bool TimePartitions::has_active_phases() { | |
164 return _active_phases.count() > 0; | |
165 } | |
166 | |
167 bool TimePartitionPhasesIterator::has_next() { | |
168 return _next < _time_partitions->num_phases(); | |
169 } | |
170 | |
171 GCPhase* TimePartitionPhasesIterator::next() { | |
172 assert(has_next(), "Must have phases left"); | |
173 return _time_partitions->phase_at(_next++); | |
174 } | |
175 | |
176 | |
177 /////////////// Unit tests /////////////// | |
178 | |
179 #ifndef PRODUCT | |
180 | |
181 class TimePartitionPhasesIteratorTest { | |
182 public: | |
183 static void all() { | |
184 one_pause(); | |
185 two_pauses(); | |
186 one_sub_pause_phase(); | |
187 many_sub_pause_phases(); | |
188 many_sub_pause_phases2(); | |
189 max_nested_pause_phases(); | |
190 } | |
191 | |
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192 static void validate_pause_phase(GCPhase* phase, int level, const char* name, const Ticks& start, const Ticks& end) { |
10405 | 193 assert(phase->level() == level, "Incorrect level"); |
194 assert(strcmp(phase->name(), name) == 0, "Incorrect name"); | |
195 assert(phase->start() == start, "Incorrect start"); | |
196 assert(phase->end() == end, "Incorrect end"); | |
197 } | |
198 | |
199 static void one_pause() { | |
200 TimePartitions time_partitions; | |
201 time_partitions.report_gc_phase_start("PausePhase", 2); | |
202 time_partitions.report_gc_phase_end(8); | |
203 | |
204 TimePartitionPhasesIterator iter(&time_partitions); | |
205 | |
206 validate_pause_phase(iter.next(), 0, "PausePhase", 2, 8); | |
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207 assert(time_partitions.sum_of_pauses() == Ticks(8) - Ticks(2), "Incorrect"); |
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208 assert(time_partitions.longest_pause() == Ticks(8) - Ticks(2), "Incorrect"); |
10405 | 209 |
210 assert(!iter.has_next(), "Too many elements"); | |
211 } | |
212 | |
213 static void two_pauses() { | |
214 TimePartitions time_partitions; | |
215 time_partitions.report_gc_phase_start("PausePhase1", 2); | |
216 time_partitions.report_gc_phase_end(3); | |
217 time_partitions.report_gc_phase_start("PausePhase2", 4); | |
218 time_partitions.report_gc_phase_end(6); | |
219 | |
220 TimePartitionPhasesIterator iter(&time_partitions); | |
221 | |
222 validate_pause_phase(iter.next(), 0, "PausePhase1", 2, 3); | |
223 validate_pause_phase(iter.next(), 0, "PausePhase2", 4, 6); | |
224 | |
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225 assert(time_partitions.sum_of_pauses() == Ticks(3) - Ticks(0), "Incorrect"); |
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226 assert(time_partitions.longest_pause() == Ticks(2) - Ticks(0), "Incorrect"); |
10405 | 227 |
228 assert(!iter.has_next(), "Too many elements"); | |
229 } | |
230 | |
231 static void one_sub_pause_phase() { | |
232 TimePartitions time_partitions; | |
233 time_partitions.report_gc_phase_start("PausePhase", 2); | |
234 time_partitions.report_gc_phase_start("SubPhase", 3); | |
235 time_partitions.report_gc_phase_end(4); | |
236 time_partitions.report_gc_phase_end(5); | |
237 | |
238 TimePartitionPhasesIterator iter(&time_partitions); | |
239 | |
240 validate_pause_phase(iter.next(), 0, "PausePhase", 2, 5); | |
241 validate_pause_phase(iter.next(), 1, "SubPhase", 3, 4); | |
242 | |
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243 assert(time_partitions.sum_of_pauses() == Ticks(3) - Ticks(0), "Incorrect"); |
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244 assert(time_partitions.longest_pause() == Ticks(3) - Ticks(0), "Incorrect"); |
10405 | 245 |
246 assert(!iter.has_next(), "Too many elements"); | |
247 } | |
248 | |
249 static void max_nested_pause_phases() { | |
250 TimePartitions time_partitions; | |
251 time_partitions.report_gc_phase_start("PausePhase", 2); | |
252 time_partitions.report_gc_phase_start("SubPhase1", 3); | |
253 time_partitions.report_gc_phase_start("SubPhase2", 4); | |
254 time_partitions.report_gc_phase_start("SubPhase3", 5); | |
255 time_partitions.report_gc_phase_end(6); | |
256 time_partitions.report_gc_phase_end(7); | |
257 time_partitions.report_gc_phase_end(8); | |
258 time_partitions.report_gc_phase_end(9); | |
259 | |
260 TimePartitionPhasesIterator iter(&time_partitions); | |
261 | |
262 validate_pause_phase(iter.next(), 0, "PausePhase", 2, 9); | |
263 validate_pause_phase(iter.next(), 1, "SubPhase1", 3, 8); | |
264 validate_pause_phase(iter.next(), 2, "SubPhase2", 4, 7); | |
265 validate_pause_phase(iter.next(), 3, "SubPhase3", 5, 6); | |
266 | |
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267 assert(time_partitions.sum_of_pauses() == Ticks(7) - Ticks(0), "Incorrect"); |
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268 assert(time_partitions.longest_pause() == Ticks(7) - Ticks(0), "Incorrect"); |
10405 | 269 |
270 assert(!iter.has_next(), "Too many elements"); | |
271 } | |
272 | |
273 static void many_sub_pause_phases() { | |
274 TimePartitions time_partitions; | |
275 time_partitions.report_gc_phase_start("PausePhase", 2); | |
276 | |
277 time_partitions.report_gc_phase_start("SubPhase1", 3); | |
278 time_partitions.report_gc_phase_end(4); | |
279 time_partitions.report_gc_phase_start("SubPhase2", 5); | |
280 time_partitions.report_gc_phase_end(6); | |
281 time_partitions.report_gc_phase_start("SubPhase3", 7); | |
282 time_partitions.report_gc_phase_end(8); | |
283 time_partitions.report_gc_phase_start("SubPhase4", 9); | |
284 time_partitions.report_gc_phase_end(10); | |
285 | |
286 time_partitions.report_gc_phase_end(11); | |
287 | |
288 TimePartitionPhasesIterator iter(&time_partitions); | |
289 | |
290 validate_pause_phase(iter.next(), 0, "PausePhase", 2, 11); | |
291 validate_pause_phase(iter.next(), 1, "SubPhase1", 3, 4); | |
292 validate_pause_phase(iter.next(), 1, "SubPhase2", 5, 6); | |
293 validate_pause_phase(iter.next(), 1, "SubPhase3", 7, 8); | |
294 validate_pause_phase(iter.next(), 1, "SubPhase4", 9, 10); | |
295 | |
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296 assert(time_partitions.sum_of_pauses() == Ticks(9) - Ticks(0), "Incorrect"); |
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297 assert(time_partitions.longest_pause() == Ticks(9) - Ticks(0), "Incorrect"); |
10405 | 298 |
299 assert(!iter.has_next(), "Too many elements"); | |
300 } | |
301 | |
302 static void many_sub_pause_phases2() { | |
303 TimePartitions time_partitions; | |
304 time_partitions.report_gc_phase_start("PausePhase", 2); | |
305 | |
306 time_partitions.report_gc_phase_start("SubPhase1", 3); | |
307 time_partitions.report_gc_phase_start("SubPhase11", 4); | |
308 time_partitions.report_gc_phase_end(5); | |
309 time_partitions.report_gc_phase_start("SubPhase12", 6); | |
310 time_partitions.report_gc_phase_end(7); | |
311 time_partitions.report_gc_phase_end(8); | |
312 time_partitions.report_gc_phase_start("SubPhase2", 9); | |
313 time_partitions.report_gc_phase_start("SubPhase21", 10); | |
314 time_partitions.report_gc_phase_end(11); | |
315 time_partitions.report_gc_phase_start("SubPhase22", 12); | |
316 time_partitions.report_gc_phase_end(13); | |
317 time_partitions.report_gc_phase_end(14); | |
318 time_partitions.report_gc_phase_start("SubPhase3", 15); | |
319 time_partitions.report_gc_phase_end(16); | |
320 | |
321 time_partitions.report_gc_phase_end(17); | |
322 | |
323 TimePartitionPhasesIterator iter(&time_partitions); | |
324 | |
325 validate_pause_phase(iter.next(), 0, "PausePhase", 2, 17); | |
326 validate_pause_phase(iter.next(), 1, "SubPhase1", 3, 8); | |
327 validate_pause_phase(iter.next(), 2, "SubPhase11", 4, 5); | |
328 validate_pause_phase(iter.next(), 2, "SubPhase12", 6, 7); | |
329 validate_pause_phase(iter.next(), 1, "SubPhase2", 9, 14); | |
330 validate_pause_phase(iter.next(), 2, "SubPhase21", 10, 11); | |
331 validate_pause_phase(iter.next(), 2, "SubPhase22", 12, 13); | |
332 validate_pause_phase(iter.next(), 1, "SubPhase3", 15, 16); | |
333 | |
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334 assert(time_partitions.sum_of_pauses() == Ticks(15) - Ticks(0), "Incorrect"); |
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335 assert(time_partitions.longest_pause() == Ticks(15) - Ticks(0), "Incorrect"); |
10405 | 336 |
337 assert(!iter.has_next(), "Too many elements"); | |
338 } | |
339 }; | |
340 | |
341 class GCTimerTest { | |
342 public: | |
343 static void all() { | |
344 gc_start(); | |
345 gc_end(); | |
346 } | |
347 | |
348 static void gc_start() { | |
349 GCTimer gc_timer; | |
350 gc_timer.register_gc_start(1); | |
351 | |
352 assert(gc_timer.gc_start() == 1, "Incorrect"); | |
353 } | |
354 | |
355 static void gc_end() { | |
356 GCTimer gc_timer; | |
357 gc_timer.register_gc_start(1); | |
358 gc_timer.register_gc_end(2); | |
359 | |
360 assert(gc_timer.gc_end() == 2, "Incorrect"); | |
361 } | |
362 }; | |
363 | |
364 void GCTimerAllTest::all() { | |
365 GCTimerTest::all(); | |
366 TimePartitionPhasesIteratorTest::all(); | |
367 } | |
368 | |
369 #endif |