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1 // Copyright 2006-2008 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2008 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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299 // stack. This function empties the marking stack, but may leave | 299 // stack. This function empties the marking stack, but may leave |
300 // overflowed objects in the heap, in which case the marking stack's | 300 // overflowed objects in the heap, in which case the marking stack's |
301 // overflow flag will be set. | 301 // overflow flag will be set. |
302 void EmptyMarkingStack(); | 302 void EmptyMarkingStack(); |
303 | 303 |
304 // Refill the marking stack with overflowed objects from the heap. This | 304 // Refill the marking stack with overflowed objects from the heap. This |
305 // function either leaves the marking stack full or clears the overflow | 305 // function either leaves the marking stack full or clears the overflow |
306 // flag on the marking stack. | 306 // flag on the marking stack. |
307 void RefillMarkingStack(); | 307 void RefillMarkingStack(); |
308 | 308 |
| 309 // After reachable maps have been marked process per context object |
| 310 // literal map caches removing unmarked entries. |
| 311 void ProcessMapCaches(); |
| 312 |
309 // Callback function for telling whether the object *p is an unmarked | 313 // Callback function for telling whether the object *p is an unmarked |
310 // heap object. | 314 // heap object. |
311 static bool IsUnmarkedHeapObject(Object** p); | 315 static bool IsUnmarkedHeapObject(Object** p); |
312 | 316 |
313 #ifdef DEBUG | 317 #ifdef DEBUG |
314 void UpdateLiveObjectCount(HeapObject* obj); | 318 void UpdateLiveObjectCount(HeapObject* obj); |
315 #endif | 319 #endif |
316 | 320 |
317 // We sweep the large object space in the same way whether we are | 321 // We sweep the large object space in the same way whether we are |
318 // compacting or not, because the large object space is never compacted. | 322 // compacting or not, because the large object space is never compacted. |
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497 CodeFlusher* code_flusher_; | 501 CodeFlusher* code_flusher_; |
498 | 502 |
499 friend class Heap; | 503 friend class Heap; |
500 friend class OverflowedObjectsScanner; | 504 friend class OverflowedObjectsScanner; |
501 }; | 505 }; |
502 | 506 |
503 | 507 |
504 } } // namespace v8::internal | 508 } } // namespace v8::internal |
505 | 509 |
506 #endif // V8_MARK_COMPACT_H_ | 510 #endif // V8_MARK_COMPACT_H_ |
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