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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 #ifndef V8_REMEMBERED_SET_H | 5 #ifndef V8_REMEMBERED_SET_H |
6 #define V8_REMEMBERED_SET_H | 6 #define V8_REMEMBERED_SET_H |
7 | 7 |
8 #include "src/assembler.h" | 8 #include "src/assembler.h" |
9 #include "src/heap/heap.h" | 9 #include "src/heap/heap.h" |
10 #include "src/heap/slot-set.h" | 10 #include "src/heap/slot-set.h" |
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195 while ((chunk = it.next()) != nullptr) { | 195 while ((chunk = it.next()) != nullptr) { |
196 chunk->ReleaseOldToOldSlots(); | 196 chunk->ReleaseOldToOldSlots(); |
197 chunk->ReleaseTypedOldToOldSlots(); | 197 chunk->ReleaseTypedOldToOldSlots(); |
198 } | 198 } |
199 } | 199 } |
200 | 200 |
201 // Eliminates all stale slots from the remembered set, i.e. | 201 // Eliminates all stale slots from the remembered set, i.e. |
202 // slots that are not part of live objects anymore. This method must be | 202 // slots that are not part of live objects anymore. This method must be |
203 // called after marking, when the whole transitive closure is known and | 203 // called after marking, when the whole transitive closure is known and |
204 // must be called before sweeping when mark bits are still intact. | 204 // must be called before sweeping when mark bits are still intact. |
205 static void ClearInvalidSlots(Heap* heap); | |
206 | |
207 static void ClearInvalidSlots(Heap* heap, MemoryChunk* chunk); | |
208 static void ClearInvalidTypedSlots(Heap* heap, MemoryChunk* chunk); | 205 static void ClearInvalidTypedSlots(Heap* heap, MemoryChunk* chunk); |
209 | 206 |
210 static void VerifyValidSlots(Heap* heap); | |
211 | |
212 private: | 207 private: |
213 static SlotSet* GetSlotSet(MemoryChunk* chunk) { | 208 static SlotSet* GetSlotSet(MemoryChunk* chunk) { |
214 if (direction == OLD_TO_OLD) { | 209 if (direction == OLD_TO_OLD) { |
215 return chunk->old_to_old_slots(); | 210 return chunk->old_to_old_slots(); |
216 } else { | 211 } else { |
217 return chunk->old_to_new_slots(); | 212 return chunk->old_to_new_slots(); |
218 } | 213 } |
219 } | 214 } |
220 | 215 |
221 static TypedSlotSet* GetTypedSlotSet(MemoryChunk* chunk) { | 216 static TypedSlotSet* GetTypedSlotSet(MemoryChunk* chunk) { |
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382 return DEBUG_TARGET_SLOT; | 377 return DEBUG_TARGET_SLOT; |
383 } | 378 } |
384 UNREACHABLE(); | 379 UNREACHABLE(); |
385 return CLEARED_SLOT; | 380 return CLEARED_SLOT; |
386 } | 381 } |
387 | 382 |
388 } // namespace internal | 383 } // namespace internal |
389 } // namespace v8 | 384 } // namespace v8 |
390 | 385 |
391 #endif // V8_REMEMBERED_SET_H | 386 #endif // V8_REMEMBERED_SET_H |
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