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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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| 139 | 139 |
| 140 | 140 |
| 141 template<typename Callback> | 141 template<typename Callback> |
| 142 class VisitorDispatchTable { | 142 class VisitorDispatchTable { |
| 143 public: | 143 public: |
| 144 inline Callback GetVisitor(Map* map) { | 144 inline Callback GetVisitor(Map* map) { |
| 145 return callbacks_[map->visitor_id()]; | 145 return callbacks_[map->visitor_id()]; |
| 146 } | 146 } |
| 147 | 147 |
| 148 void Register(StaticVisitorBase::VisitorId id, Callback callback) { | 148 void Register(StaticVisitorBase::VisitorId id, Callback callback) { |
| 149 ASSERT((0 <= id) && (id < StaticVisitorBase::kVisitorIdCount)); | 149 ASSERT(id < StaticVisitorBase::kVisitorIdCount); // id is unsigned. |
| 150 callbacks_[id] = callback; | 150 callbacks_[id] = callback; |
| 151 } | 151 } |
| 152 | 152 |
| 153 template<typename Visitor, | 153 template<typename Visitor, |
| 154 StaticVisitorBase::VisitorId base, | 154 StaticVisitorBase::VisitorId base, |
| 155 StaticVisitorBase::VisitorId generic, | 155 StaticVisitorBase::VisitorId generic, |
| 156 int object_size_in_words> | 156 int object_size_in_words> |
| 157 void RegisterSpecialization() { | 157 void RegisterSpecialization() { |
| 158 static const int size = object_size_in_words * kPointerSize; | 158 static const int size = object_size_in_words * kPointerSize; |
| 159 Register(StaticVisitorBase::GetVisitorIdForSize(base, generic, size), | 159 Register(StaticVisitorBase::GetVisitorIdForSize(base, generic, size), |
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| 179 } | 179 } |
| 180 | 180 |
| 181 private: | 181 private: |
| 182 Callback callbacks_[StaticVisitorBase::kVisitorIdCount]; | 182 Callback callbacks_[StaticVisitorBase::kVisitorIdCount]; |
| 183 }; | 183 }; |
| 184 | 184 |
| 185 | 185 |
| 186 template<typename StaticVisitor> | 186 template<typename StaticVisitor> |
| 187 class BodyVisitorBase : public AllStatic { | 187 class BodyVisitorBase : public AllStatic { |
| 188 public: | 188 public: |
| 189 static inline void IteratePointers(Heap* heap, | 189 INLINE(static void IteratePointers(Heap* heap, |
| 190 HeapObject* object, | 190 HeapObject* object, |
| 191 int start_offset, | 191 int start_offset, |
| 192 int end_offset) { | 192 int end_offset)) { |
| 193 Object** start_slot = reinterpret_cast<Object**>(object->address() + | 193 Object** start_slot = reinterpret_cast<Object**>(object->address() + |
| 194 start_offset); | 194 start_offset); |
| 195 Object** end_slot = reinterpret_cast<Object**>(object->address() + | 195 Object** end_slot = reinterpret_cast<Object**>(object->address() + |
| 196 end_offset); | 196 end_offset); |
| 197 StaticVisitor::VisitPointers(heap, start_slot, end_slot); | 197 StaticVisitor::VisitPointers(heap, start_slot, end_slot); |
| 198 } | 198 } |
| 199 }; | 199 }; |
| 200 | 200 |
| 201 | 201 |
| 202 template<typename StaticVisitor, typename BodyDescriptor, typename ReturnType> | 202 template<typename StaticVisitor, typename BodyDescriptor, typename ReturnType> |
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| 404 | 404 |
| 405 for (; !it.done(); it.next()) { | 405 for (; !it.done(); it.next()) { |
| 406 it.rinfo()->template Visit<StaticVisitor>(heap); | 406 it.rinfo()->template Visit<StaticVisitor>(heap); |
| 407 } | 407 } |
| 408 } | 408 } |
| 409 | 409 |
| 410 | 410 |
| 411 } } // namespace v8::internal | 411 } } // namespace v8::internal |
| 412 | 412 |
| 413 #endif // V8_OBJECTS_VISITING_H_ | 413 #endif // V8_OBJECTS_VISITING_H_ |
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