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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 // 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 #ifndef V8_HEAP_INCREMENTAL_MARKING_H_ | 5 #ifndef V8_HEAP_INCREMENTAL_MARKING_H_ |
6 #define V8_HEAP_INCREMENTAL_MARKING_H_ | 6 #define V8_HEAP_INCREMENTAL_MARKING_H_ |
7 | 7 |
8 #include "src/cancelable-task.h" | 8 #include "src/cancelable-task.h" |
9 #include "src/execution.h" | 9 #include "src/execution.h" |
10 #include "src/heap/heap.h" | 10 #include "src/heap/heap.h" |
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65 inline bool IsReadyToOverApproximateWeakClosure() const { | 65 inline bool IsReadyToOverApproximateWeakClosure() const { |
66 return request_type_ == FINALIZATION && !finalize_marking_completed_; | 66 return request_type_ == FINALIZATION && !finalize_marking_completed_; |
67 } | 67 } |
68 | 68 |
69 GCRequestType request_type() const { return request_type_; } | 69 GCRequestType request_type() const { return request_type_; } |
70 | 70 |
71 void reset_request_type() { request_type_ = NONE; } | 71 void reset_request_type() { request_type_ = NONE; } |
72 | 72 |
73 bool CanBeActivated(); | 73 bool CanBeActivated(); |
74 | 74 |
75 bool ShouldActivateEvenWithoutIdleNotification(); | |
76 | |
77 bool WasActivated(); | 75 bool WasActivated(); |
78 | 76 |
79 void Start(GarbageCollectionReason gc_reason); | 77 void Start(GarbageCollectionReason gc_reason); |
80 | 78 |
81 void FinalizeIncrementally(); | 79 void FinalizeIncrementally(); |
82 | 80 |
83 void UpdateMarkingDequeAfterScavenge(); | 81 void UpdateMarkingDequeAfterScavenge(); |
84 | 82 |
85 void Hurry(); | 83 void Hurry(); |
86 | 84 |
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110 // heavy (color-checking) write barriers have been invoked. | 108 // heavy (color-checking) write barriers have been invoked. |
111 static const size_t kAllocatedThreshold = 64 * KB; | 109 static const size_t kAllocatedThreshold = 64 * KB; |
112 | 110 |
113 static const int kStepSizeInMs = 1; | 111 static const int kStepSizeInMs = 1; |
114 static const int kMaxStepSizeInMs = 5; | 112 static const int kMaxStepSizeInMs = 5; |
115 | 113 |
116 // This is the upper bound for how many times we allow finalization of | 114 // This is the upper bound for how many times we allow finalization of |
117 // incremental marking to be postponed. | 115 // incremental marking to be postponed. |
118 static const int kMaxIdleMarkingDelayCounter = 3; | 116 static const int kMaxIdleMarkingDelayCounter = 3; |
119 | 117 |
| 118 #ifndef DEBUG |
| 119 static const intptr_t kActivationThreshold = 8 * MB; |
| 120 #else |
| 121 static const intptr_t kActivationThreshold = 0; |
| 122 #endif |
| 123 |
120 void FinalizeSweeping(); | 124 void FinalizeSweeping(); |
121 | 125 |
122 size_t Step(size_t bytes_to_process, CompletionAction action, | 126 size_t Step(size_t bytes_to_process, CompletionAction action, |
123 ForceCompletionAction completion, StepOrigin step_origin); | 127 ForceCompletionAction completion, StepOrigin step_origin); |
124 | 128 |
125 inline void RestartIfNotMarking(); | 129 inline void RestartIfNotMarking(); |
126 | 130 |
127 static void RecordWriteFromCode(HeapObject* obj, Object** slot, | 131 static void RecordWriteFromCode(HeapObject* obj, Object** slot, |
128 Isolate* isolate); | 132 Isolate* isolate); |
129 | 133 |
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295 IncrementalMarkingJob incremental_marking_job_; | 299 IncrementalMarkingJob incremental_marking_job_; |
296 Observer new_generation_observer_; | 300 Observer new_generation_observer_; |
297 Observer old_generation_observer_; | 301 Observer old_generation_observer_; |
298 | 302 |
299 DISALLOW_IMPLICIT_CONSTRUCTORS(IncrementalMarking); | 303 DISALLOW_IMPLICIT_CONSTRUCTORS(IncrementalMarking); |
300 }; | 304 }; |
301 } // namespace internal | 305 } // namespace internal |
302 } // namespace v8 | 306 } // namespace v8 |
303 | 307 |
304 #endif // V8_HEAP_INCREMENTAL_MARKING_H_ | 308 #endif // V8_HEAP_INCREMENTAL_MARKING_H_ |
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