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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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846 void ProcessMarkingDeque(); | 846 void ProcessMarkingDeque(); |
847 | 847 |
848 // Mark objects reachable (transitively) from objects in the marking stack | 848 // Mark objects reachable (transitively) from objects in the marking stack |
849 // or overflowed in the heap. This respects references only considered in | 849 // or overflowed in the heap. This respects references only considered in |
850 // the final atomic marking pause including the following: | 850 // the final atomic marking pause including the following: |
851 // - Processing of objects reachable through Harmony WeakMaps. | 851 // - Processing of objects reachable through Harmony WeakMaps. |
852 // - Objects reachable due to host application logic like object groups | 852 // - Objects reachable due to host application logic like object groups |
853 // or implicit references' groups. | 853 // or implicit references' groups. |
854 void ProcessEphemeralMarking(ObjectVisitor* visitor); | 854 void ProcessEphemeralMarking(ObjectVisitor* visitor); |
855 | 855 |
| 856 // If the call-site of the top optimized code was not prepared for |
| 857 // deoptimization, then treat the maps in the code as strong pointers, |
| 858 // otherwise a map can die and deoptimize the code. |
| 859 void ProcessTopOptimizedFrame(ObjectVisitor* visitor); |
| 860 |
856 // Mark objects reachable (transitively) from objects in the marking | 861 // Mark objects reachable (transitively) from objects in the marking |
857 // stack. This function empties the marking stack, but may leave | 862 // stack. This function empties the marking stack, but may leave |
858 // overflowed objects in the heap, in which case the marking stack's | 863 // overflowed objects in the heap, in which case the marking stack's |
859 // overflow flag will be set. | 864 // overflow flag will be set. |
860 void EmptyMarkingDeque(); | 865 void EmptyMarkingDeque(); |
861 | 866 |
862 // Refill the marking stack with overflowed objects from the heap. This | 867 // Refill the marking stack with overflowed objects from the heap. This |
863 // function either leaves the marking stack full or clears the overflow | 868 // function either leaves the marking stack full or clears the overflow |
864 // flag on the marking stack. | 869 // flag on the marking stack. |
865 void RefillMarkingDeque(); | 870 void RefillMarkingDeque(); |
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958 private: | 963 private: |
959 MarkCompactCollector* collector_; | 964 MarkCompactCollector* collector_; |
960 }; | 965 }; |
961 | 966 |
962 | 967 |
963 const char* AllocationSpaceName(AllocationSpace space); | 968 const char* AllocationSpaceName(AllocationSpace space); |
964 | 969 |
965 } } // namespace v8::internal | 970 } } // namespace v8::internal |
966 | 971 |
967 #endif // V8_MARK_COMPACT_H_ | 972 #endif // V8_MARK_COMPACT_H_ |
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