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| 1 // Copyright 2009 the V8 project authors. All rights reserved. | 1 // Copyright 2009 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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| 832 *p = first_word.ToForwardingAddress(); | 832 *p = first_word.ToForwardingAddress(); |
| 833 return; | 833 return; |
| 834 } | 834 } |
| 835 | 835 |
| 836 // Call the slow part of scavenge object. | 836 // Call the slow part of scavenge object. |
| 837 return ScavengeObjectSlow(p, object); | 837 return ScavengeObjectSlow(p, object); |
| 838 } | 838 } |
| 839 | 839 |
| 840 | 840 |
| 841 static inline bool IsShortcutCandidate(HeapObject* object, Map* map) { | 841 static inline bool IsShortcutCandidate(HeapObject* object, Map* map) { |
| 842 STATIC_ASSERT(kNotStringTag != 0 && kSymbolTag != 0); |
| 842 ASSERT(object->map() == map); | 843 ASSERT(object->map() == map); |
| 843 InstanceType type = map->instance_type(); | 844 InstanceType type = map->instance_type(); |
| 844 if ((type & kShortcutTypeMask) != kShortcutTypeTag) return false; | 845 if ((type & kShortcutTypeMask) != kShortcutTypeTag) return false; |
| 845 ASSERT(object->IsString() && !object->IsSymbol()); | 846 ASSERT(object->IsString() && !object->IsSymbol()); |
| 846 return ConsString::cast(object)->unchecked_second() == Heap::empty_string(); | 847 return ConsString::cast(object)->unchecked_second() == Heap::empty_string(); |
| 847 } | 848 } |
| 848 | 849 |
| 849 | 850 |
| 850 void Heap::ScavengeObjectSlow(HeapObject** p, HeapObject* object) { | 851 void Heap::ScavengeObjectSlow(HeapObject** p, HeapObject* object) { |
| 851 ASSERT(InFromSpace(object)); | 852 ASSERT(InFromSpace(object)); |
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| 3380 #ifdef DEBUG | 3381 #ifdef DEBUG |
| 3381 bool Heap::GarbageCollectionGreedyCheck() { | 3382 bool Heap::GarbageCollectionGreedyCheck() { |
| 3382 ASSERT(FLAG_gc_greedy); | 3383 ASSERT(FLAG_gc_greedy); |
| 3383 if (Bootstrapper::IsActive()) return true; | 3384 if (Bootstrapper::IsActive()) return true; |
| 3384 if (disallow_allocation_failure()) return true; | 3385 if (disallow_allocation_failure()) return true; |
| 3385 return CollectGarbage(0, NEW_SPACE); | 3386 return CollectGarbage(0, NEW_SPACE); |
| 3386 } | 3387 } |
| 3387 #endif | 3388 #endif |
| 3388 | 3389 |
| 3389 } } // namespace v8::internal | 3390 } } // namespace v8::internal |
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