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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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91 HeapObject** top_; | 91 HeapObject** top_; |
92 HeapObject** high_; | 92 HeapObject** high_; |
93 bool overflowed_; | 93 bool overflowed_; |
94 | 94 |
95 DISALLOW_COPY_AND_ASSIGN(MarkingStack); | 95 DISALLOW_COPY_AND_ASSIGN(MarkingStack); |
96 }; | 96 }; |
97 | 97 |
98 | 98 |
99 // ------------------------------------------------------------------------- | 99 // ------------------------------------------------------------------------- |
100 // Mark-Compact collector | 100 // Mark-Compact collector |
101 // | |
102 // All methods are static. | |
103 | 101 |
104 class OverflowedObjectsScanner; | 102 class OverflowedObjectsScanner; |
105 | 103 |
106 class MarkCompactCollector { | 104 class MarkCompactCollector { |
107 public: | 105 public: |
108 // Type of functions to compute forwarding addresses of objects in | 106 // Type of functions to compute forwarding addresses of objects in |
109 // compacted spaces. Given an object and its size, return a (non-failure) | 107 // compacted spaces. Given an object and its size, return a (non-failure) |
110 // Object* that will be the object after forwarding. There is a separate | 108 // Object* that will be the object after forwarding. There is a separate |
111 // allocation function for each (compactable) space based on the location | 109 // allocation function for each (compactable) space based on the location |
112 // of the object before compaction. | 110 // of the object before compaction. |
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499 CodeFlusher* code_flusher_; | 497 CodeFlusher* code_flusher_; |
500 | 498 |
501 friend class Heap; | 499 friend class Heap; |
502 friend class OverflowedObjectsScanner; | 500 friend class OverflowedObjectsScanner; |
503 }; | 501 }; |
504 | 502 |
505 | 503 |
506 } } // namespace v8::internal | 504 } } // namespace v8::internal |
507 | 505 |
508 #endif // V8_MARK_COMPACT_H_ | 506 #endif // V8_MARK_COMPACT_H_ |
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