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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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2259 } | 2259 } |
2260 | 2260 |
2261 bool IsLowSurvivalRate() { | 2261 bool IsLowSurvivalRate() { |
2262 return low_survival_rate_period_length_ > 0; | 2262 return low_survival_rate_period_length_ > 0; |
2263 } | 2263 } |
2264 | 2264 |
2265 void SelectScavengingVisitorsTable(); | 2265 void SelectScavengingVisitorsTable(); |
2266 | 2266 |
2267 void StartIdleRound() { | 2267 void StartIdleRound() { |
2268 mark_sweeps_since_idle_round_started_ = 0; | 2268 mark_sweeps_since_idle_round_started_ = 0; |
2269 ms_count_at_last_idle_notification_ = ms_count_; | |
2270 } | 2269 } |
2271 | 2270 |
2272 void FinishIdleRound() { | 2271 void FinishIdleRound() { |
2273 mark_sweeps_since_idle_round_started_ = kMaxMarkSweepsInIdleRound; | 2272 mark_sweeps_since_idle_round_started_ = kMaxMarkSweepsInIdleRound; |
2274 scavenges_since_last_idle_round_ = 0; | 2273 scavenges_since_last_idle_round_ = 0; |
2275 } | 2274 } |
2276 | 2275 |
2277 bool EnoughGarbageSinceLastIdleRound() { | 2276 bool EnoughGarbageSinceLastIdleRound() { |
2278 return (scavenges_since_last_idle_round_ >= kIdleScavengeThreshold); | 2277 return (scavenges_since_last_idle_round_ >= kIdleScavengeThreshold); |
2279 } | 2278 } |
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2336 | 2335 |
2337 Marking marking_; | 2336 Marking marking_; |
2338 | 2337 |
2339 IncrementalMarking incremental_marking_; | 2338 IncrementalMarking incremental_marking_; |
2340 | 2339 |
2341 int number_idle_notifications_; | 2340 int number_idle_notifications_; |
2342 unsigned int last_idle_notification_gc_count_; | 2341 unsigned int last_idle_notification_gc_count_; |
2343 bool last_idle_notification_gc_count_init_; | 2342 bool last_idle_notification_gc_count_init_; |
2344 | 2343 |
2345 int mark_sweeps_since_idle_round_started_; | 2344 int mark_sweeps_since_idle_round_started_; |
2346 int ms_count_at_last_idle_notification_; | |
2347 unsigned int gc_count_at_last_idle_gc_; | 2345 unsigned int gc_count_at_last_idle_gc_; |
2348 int scavenges_since_last_idle_round_; | 2346 int scavenges_since_last_idle_round_; |
2349 | 2347 |
2350 // If the --deopt_every_n_garbage_collections flag is set to a positive value, | 2348 // If the --deopt_every_n_garbage_collections flag is set to a positive value, |
2351 // this variable holds the number of garbage collections since the last | 2349 // this variable holds the number of garbage collections since the last |
2352 // deoptimization triggered by garbage collection. | 2350 // deoptimization triggered by garbage collection. |
2353 int gcs_since_last_deopt_; | 2351 int gcs_since_last_deopt_; |
2354 | 2352 |
2355 #ifdef VERIFY_HEAP | 2353 #ifdef VERIFY_HEAP |
2356 int no_weak_embedded_maps_verification_scope_depth_; | 2354 int no_weak_embedded_maps_verification_scope_depth_; |
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3082 AssertNoAllocation no_alloc; // i.e. no gc allowed. | 3080 AssertNoAllocation no_alloc; // i.e. no gc allowed. |
3083 | 3081 |
3084 private: | 3082 private: |
3085 DISALLOW_IMPLICIT_CONSTRUCTORS(PathTracer); | 3083 DISALLOW_IMPLICIT_CONSTRUCTORS(PathTracer); |
3086 }; | 3084 }; |
3087 #endif // DEBUG | 3085 #endif // DEBUG |
3088 | 3086 |
3089 } } // namespace v8::internal | 3087 } } // namespace v8::internal |
3090 | 3088 |
3091 #endif // V8_HEAP_H_ | 3089 #endif // V8_HEAP_H_ |
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