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| 1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 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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| 98 kVisitStruct9, | 98 kVisitStruct9, |
| 99 kVisitStructGeneric, | 99 kVisitStructGeneric, |
| 100 | 100 |
| 101 kVisitConsString, | 101 kVisitConsString, |
| 102 kVisitOddball, | 102 kVisitOddball, |
| 103 kVisitCode, | 103 kVisitCode, |
| 104 kVisitMap, | 104 kVisitMap, |
| 105 kVisitPropertyCell, | 105 kVisitPropertyCell, |
| 106 kVisitSharedFunctionInfo, | 106 kVisitSharedFunctionInfo, |
| 107 kVisitJSFunction, | 107 kVisitJSFunction, |
| 108 kVisitJSRegExp, |
| 108 | 109 |
| 109 kVisitorIdCount, | 110 kVisitorIdCount, |
| 110 kMinObjectSizeInWords = 2 | 111 kMinObjectSizeInWords = 2 |
| 111 }; | 112 }; |
| 112 | 113 |
| 113 // Visitor ID should fit in one byte. | 114 // Visitor ID should fit in one byte. |
| 114 STATIC_ASSERT(kVisitorIdCount <= 256); | 115 STATIC_ASSERT(kVisitorIdCount <= 256); |
| 115 | 116 |
| 116 // Determine which specialized visitor should be used for given instance type | 117 // Determine which specialized visitor should be used for given instance type |
| 117 // and instance type. | 118 // and instance type. |
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| 293 Context::ScavengeBodyDescriptor, | 294 Context::ScavengeBodyDescriptor, |
| 294 int>::Visit); | 295 int>::Visit); |
| 295 | 296 |
| 296 table_.Register(kVisitByteArray, &VisitByteArray); | 297 table_.Register(kVisitByteArray, &VisitByteArray); |
| 297 | 298 |
| 298 table_.Register(kVisitSharedFunctionInfo, | 299 table_.Register(kVisitSharedFunctionInfo, |
| 299 &FixedBodyVisitor<StaticVisitor, | 300 &FixedBodyVisitor<StaticVisitor, |
| 300 SharedFunctionInfo::BodyDescriptor, | 301 SharedFunctionInfo::BodyDescriptor, |
| 301 int>::Visit); | 302 int>::Visit); |
| 302 | 303 |
| 304 table_.Register(kVisitJSRegExp, &VisitJSRegExp); |
| 305 |
| 303 table_.Register(kVisitSeqAsciiString, &VisitSeqAsciiString); | 306 table_.Register(kVisitSeqAsciiString, &VisitSeqAsciiString); |
| 304 | 307 |
| 305 table_.Register(kVisitSeqTwoByteString, &VisitSeqTwoByteString); | 308 table_.Register(kVisitSeqTwoByteString, &VisitSeqTwoByteString); |
| 306 | 309 |
| 307 table_.Register(kVisitJSFunction, | 310 table_.Register(kVisitJSFunction, |
| 308 &JSObjectVisitor:: | 311 &JSObjectVisitor:: |
| 309 template VisitSpecialized<JSFunction::kSize>); | 312 template VisitSpecialized<JSFunction::kSize>); |
| 310 | 313 |
| 311 table_.RegisterSpecializations<DataObjectVisitor, | 314 table_.RegisterSpecializations<DataObjectVisitor, |
| 312 kVisitDataObject, | 315 kVisitDataObject, |
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| 335 static inline int VisitFixedDoubleArray(Map* map, HeapObject* object) { | 338 static inline int VisitFixedDoubleArray(Map* map, HeapObject* object) { |
| 336 int length = reinterpret_cast<FixedDoubleArray*>(object)->length(); | 339 int length = reinterpret_cast<FixedDoubleArray*>(object)->length(); |
| 337 return FixedDoubleArray::SizeFor(length); | 340 return FixedDoubleArray::SizeFor(length); |
| 338 } | 341 } |
| 339 | 342 |
| 340 static inline int VisitSeqAsciiString(Map* map, HeapObject* object) { | 343 static inline int VisitSeqAsciiString(Map* map, HeapObject* object) { |
| 341 return SeqAsciiString::cast(object)-> | 344 return SeqAsciiString::cast(object)-> |
| 342 SeqAsciiStringSize(map->instance_type()); | 345 SeqAsciiStringSize(map->instance_type()); |
| 343 } | 346 } |
| 344 | 347 |
| 348 static inline int VisitJSRegExp(Map* map, HeapObject* object) { |
| 349 return JSObjectVisitor::Visit(map, object); |
| 350 } |
| 351 |
| 345 static inline int VisitSeqTwoByteString(Map* map, HeapObject* object) { | 352 static inline int VisitSeqTwoByteString(Map* map, HeapObject* object) { |
| 346 return SeqTwoByteString::cast(object)-> | 353 return SeqTwoByteString::cast(object)-> |
| 347 SeqTwoByteStringSize(map->instance_type()); | 354 SeqTwoByteStringSize(map->instance_type()); |
| 348 } | 355 } |
| 349 | 356 |
| 350 class DataObjectVisitor { | 357 class DataObjectVisitor { |
| 351 public: | 358 public: |
| 352 template<int object_size> | 359 template<int object_size> |
| 353 static inline int VisitSpecialized(Map* map, HeapObject* object) { | 360 static inline int VisitSpecialized(Map* map, HeapObject* object) { |
| 354 return object_size; | 361 return object_size; |
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| 423 | 430 |
| 424 for (; !it.done(); it.next()) { | 431 for (; !it.done(); it.next()) { |
| 425 it.rinfo()->template Visit<StaticVisitor>(heap); | 432 it.rinfo()->template Visit<StaticVisitor>(heap); |
| 426 } | 433 } |
| 427 } | 434 } |
| 428 | 435 |
| 429 | 436 |
| 430 } } // namespace v8::internal | 437 } } // namespace v8::internal |
| 431 | 438 |
| 432 #endif // V8_OBJECTS_VISITING_H_ | 439 #endif // V8_OBJECTS_VISITING_H_ |
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