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1 // Copyright 2014 the V8 project authors. All rights reserved. | 1 // Copyright 2014 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "src/v8.h" | 5 #include "src/v8.h" |
6 | 6 |
7 #include "src/gc-tracer.h" | 7 #include "src/gc-tracer.h" |
8 | 8 |
9 namespace v8 { | 9 namespace v8 { |
10 namespace internal { | 10 namespace internal { |
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261 current_.incremental_marking_steps - | 261 current_.incremental_marking_steps - |
262 previous_mark_compactor_event_.incremental_marking_steps); | 262 previous_mark_compactor_event_.incremental_marking_steps); |
263 PrintF("stepstook=%.1f ", | 263 PrintF("stepstook=%.1f ", |
264 current_.incremental_marking_duration - | 264 current_.incremental_marking_duration - |
265 previous_mark_compactor_event_.incremental_marking_duration); | 265 previous_mark_compactor_event_.incremental_marking_duration); |
266 PrintF("longeststep=%.1f ", current_.longest_incremental_marking_step); | 266 PrintF("longeststep=%.1f ", current_.longest_incremental_marking_step); |
267 } | 267 } |
268 | 268 |
269 PrintF("\n"); | 269 PrintF("\n"); |
270 } | 270 } |
| 271 |
| 272 |
| 273 double GCTracer::MeanDuration(const EventBuffer& events) const { |
| 274 if (events.empty()) return 0.0; |
| 275 |
| 276 double mean = 0.0; |
| 277 EventBuffer::const_iterator iter = events.begin(); |
| 278 while (iter != events.end()) { |
| 279 mean += iter->end_time - iter->start_time; |
| 280 ++iter; |
| 281 } |
| 282 |
| 283 return mean / events.size(); |
| 284 } |
| 285 |
| 286 |
| 287 double GCTracer::MaxDuration(const EventBuffer& events) const { |
| 288 if (events.empty()) return 0.0; |
| 289 |
| 290 double maximum = 0.0f; |
| 291 EventBuffer::const_iterator iter = events.begin(); |
| 292 while (iter != events.end()) { |
| 293 maximum = Max(iter->end_time - iter->start_time, maximum); |
| 294 ++iter; |
| 295 } |
| 296 |
| 297 return maximum; |
| 298 } |
| 299 |
| 300 |
| 301 double GCTracer::MeanIncrementalMarkingDuration() const { |
| 302 if (mark_compactor_events_.empty()) return 0.0; |
| 303 |
| 304 EventBuffer::const_iterator last_mc = mark_compactor_events_.begin(); |
| 305 return last_mc->incremental_marking_duration / |
| 306 last_mc->incremental_marking_steps; |
| 307 } |
| 308 |
| 309 |
| 310 double GCTracer::MaxIncrementalMarkingDuration() const { |
| 311 if (mark_compactor_events_.empty()) return 0.0; |
| 312 |
| 313 EventBuffer::const_iterator last_mc = mark_compactor_events_.begin(); |
| 314 return last_mc->longest_incremental_marking_step; |
| 315 } |
271 } | 316 } |
272 } // namespace v8::internal | 317 } // namespace v8::internal |
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