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| 1 // Copyright 2016 the V8 project authors. All rights reserved. | 1 // Copyright 2016 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/heap/remembered-set.h" | 5 #include "src/heap/remembered-set.h" |
| 6 #include "src/heap/heap-inl.h" | 6 #include "src/heap/heap-inl.h" |
| 7 #include "src/heap/heap.h" | 7 #include "src/heap/heap.h" |
| 8 #include "src/heap/mark-compact.h" | 8 #include "src/heap/mark-compact.h" |
| 9 #include "src/heap/slot-set.h" | 9 #include "src/heap/slot-set.h" |
| 10 #include "src/heap/spaces.h" | 10 #include "src/heap/spaces.h" |
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| 24 Object** slot = reinterpret_cast<Object**>(addr); | 24 Object** slot = reinterpret_cast<Object**>(addr); |
| 25 return IsValidSlot(heap, chunk, slot) ? KEEP_SLOT : REMOVE_SLOT; | 25 return IsValidSlot(heap, chunk, slot) ? KEEP_SLOT : REMOVE_SLOT; |
| 26 }); | 26 }); |
| 27 } | 27 } |
| 28 } | 28 } |
| 29 for (MemoryChunk* chunk : *heap->code_space()) { | 29 for (MemoryChunk* chunk : *heap->code_space()) { |
| 30 TypedSlotSet* slots = GetTypedSlotSet(chunk); | 30 TypedSlotSet* slots = GetTypedSlotSet(chunk); |
| 31 if (slots != nullptr) { | 31 if (slots != nullptr) { |
| 32 slots->Iterate( | 32 slots->Iterate( |
| 33 [heap, chunk](SlotType type, Address host_addr, Address addr) { | 33 [heap, chunk](SlotType type, Address host_addr, Address addr) { |
| 34 if (Marking::IsBlack(Marking::MarkBitFrom(host_addr))) { | 34 if (Marking::IsBlack(ObjectMarking::MarkBitFrom(host_addr))) { |
| 35 return KEEP_SLOT; | 35 return KEEP_SLOT; |
| 36 } else { | 36 } else { |
| 37 return REMOVE_SLOT; | 37 return REMOVE_SLOT; |
| 38 } | 38 } |
| 39 }); | 39 }); |
| 40 } | 40 } |
| 41 } | 41 } |
| 42 if (Heap::ShouldZapGarbage()) { | 42 if (Heap::ShouldZapGarbage()) { |
| 43 // Need to filter invalid slots as we overwrite them with zap values in | 43 // Need to filter invalid slots as we overwrite them with zap values in |
| 44 // during sweeping which runs concurrently with pointer updating. | 44 // during sweeping which runs concurrently with pointer updating. |
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| 81 bool RememberedSet<direction>::IsValidSlot(Heap* heap, MemoryChunk* chunk, | 81 bool RememberedSet<direction>::IsValidSlot(Heap* heap, MemoryChunk* chunk, |
| 82 Object** slot) { | 82 Object** slot) { |
| 83 STATIC_ASSERT(direction == OLD_TO_NEW); | 83 STATIC_ASSERT(direction == OLD_TO_NEW); |
| 84 Object* object = *slot; | 84 Object* object = *slot; |
| 85 if (!heap->InNewSpace(object)) { | 85 if (!heap->InNewSpace(object)) { |
| 86 return false; | 86 return false; |
| 87 } | 87 } |
| 88 HeapObject* heap_object = HeapObject::cast(object); | 88 HeapObject* heap_object = HeapObject::cast(object); |
| 89 // If the target object is not black, the source slot must be part | 89 // If the target object is not black, the source slot must be part |
| 90 // of a non-black (dead) object. | 90 // of a non-black (dead) object. |
| 91 return Marking::IsBlack(Marking::MarkBitFrom(heap_object)) && | 91 return Marking::IsBlack(ObjectMarking::MarkBitFrom(heap_object)) && |
| 92 heap->mark_compact_collector()->IsSlotInBlackObject( | 92 heap->mark_compact_collector()->IsSlotInBlackObject( |
| 93 chunk, reinterpret_cast<Address>(slot)); | 93 chunk, reinterpret_cast<Address>(slot)); |
| 94 } | 94 } |
| 95 | 95 |
| 96 template void RememberedSet<OLD_TO_NEW>::ClearInvalidSlots(Heap* heap); | 96 template void RememberedSet<OLD_TO_NEW>::ClearInvalidSlots(Heap* heap); |
| 97 template void RememberedSet<OLD_TO_NEW>::VerifyValidSlots(Heap* heap); | 97 template void RememberedSet<OLD_TO_NEW>::VerifyValidSlots(Heap* heap); |
| 98 template void RememberedSet<OLD_TO_OLD>::VerifyValidSlots(Heap* heap); | 98 template void RememberedSet<OLD_TO_OLD>::VerifyValidSlots(Heap* heap); |
| 99 | 99 |
| 100 } // namespace internal | 100 } // namespace internal |
| 101 } // namespace v8 | 101 } // namespace v8 |
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