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| 1 // Copyright 2006-2009 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2009 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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| 6718 if (map != map_) return false; | 6718 if (map != map_) return false; | 
| 6719 String* name = String::cast(pair->get(1)); | 6719 String* name = String::cast(pair->get(1)); | 
| 6720 return name->Equals(name_); | 6720 return name->Equals(name_); | 
| 6721 } | 6721 } | 
| 6722 | 6722 | 
| 6723 typedef uint32_t (*HashFunction)(Object* obj); | 6723 typedef uint32_t (*HashFunction)(Object* obj); | 
| 6724 | 6724 | 
| 6725 virtual HashFunction GetHashFunction() { return MapNameHash; } | 6725 virtual HashFunction GetHashFunction() { return MapNameHash; } | 
| 6726 | 6726 | 
| 6727 static uint32_t MapNameHashHelper(Map* map, String* name) { | 6727 static uint32_t MapNameHashHelper(Map* map, String* name) { | 
| 6728 return reinterpret_cast<uint32_t>(map) ^ name->Hash(); | 6728 uintptr_t addr_hash = | 
| 6729 static_cast<uint32_t>(reinterpret_cast<uintptr_t>(map)); | |
| 
 
Dean McNamee
2009/05/12 08:22:40
comment about truncation?
 
Lasse Reichstein
2009/05/12 10:32:51
Added
 
 | |
| 6730 return addr_hash ^ name->Hash(); | |
| 6729 } | 6731 } | 
| 6730 | 6732 | 
| 6731 static uint32_t MapNameHash(Object* obj) { | 6733 static uint32_t MapNameHash(Object* obj) { | 
| 6732 FixedArray* pair = FixedArray::cast(obj); | 6734 FixedArray* pair = FixedArray::cast(obj); | 
| 6733 Map* map = Map::cast(pair->get(0)); | 6735 Map* map = Map::cast(pair->get(0)); | 
| 6734 String* name = String::cast(pair->get(1)); | 6736 String* name = String::cast(pair->get(1)); | 
| 6735 return MapNameHashHelper(map, name); | 6737 return MapNameHashHelper(map, name); | 
| 6736 } | 6738 } | 
| 6737 | 6739 | 
| 6738 virtual uint32_t Hash() { | 6740 virtual uint32_t Hash() { | 
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| 7501 // No break point. | 7503 // No break point. | 
| 7502 if (break_point_objects()->IsUndefined()) return 0; | 7504 if (break_point_objects()->IsUndefined()) return 0; | 
| 7503 // Single beak point. | 7505 // Single beak point. | 
| 7504 if (!break_point_objects()->IsFixedArray()) return 1; | 7506 if (!break_point_objects()->IsFixedArray()) return 1; | 
| 7505 // Multiple break points. | 7507 // Multiple break points. | 
| 7506 return FixedArray::cast(break_point_objects())->length(); | 7508 return FixedArray::cast(break_point_objects())->length(); | 
| 7507 } | 7509 } | 
| 7508 #endif | 7510 #endif | 
| 7509 | 7511 | 
| 7510 } } // namespace v8::internal | 7512 } } // namespace v8::internal | 
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