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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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93 kVisitStruct8, | 93 kVisitStruct8, |
94 kVisitStruct9, | 94 kVisitStruct9, |
95 kVisitStructGeneric, | 95 kVisitStructGeneric, |
96 | 96 |
97 kVisitConsString, | 97 kVisitConsString, |
98 kVisitOddball, | 98 kVisitOddball, |
99 kVisitCode, | 99 kVisitCode, |
100 kVisitMap, | 100 kVisitMap, |
101 kVisitPropertyCell, | 101 kVisitPropertyCell, |
102 kVisitSharedFunctionInfo, | 102 kVisitSharedFunctionInfo, |
| 103 kVisitJSFunction, |
103 | 104 |
104 kVisitorIdCount, | 105 kVisitorIdCount, |
105 kMinObjectSizeInWords = 2 | 106 kMinObjectSizeInWords = 2 |
106 }; | 107 }; |
107 | 108 |
108 // Determine which specialized visitor should be used for given instance type | 109 // Determine which specialized visitor should be used for given instance type |
109 // and instance type. | 110 // and instance type. |
110 static VisitorId GetVisitorId(int instance_type, int instance_size); | 111 static VisitorId GetVisitorId(int instance_type, int instance_size); |
111 | 112 |
112 static VisitorId GetVisitorId(Map* map) { | 113 static VisitorId GetVisitorId(Map* map) { |
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197 class FlexibleBodyVisitor : public BodyVisitorBase<StaticVisitor> { | 198 class FlexibleBodyVisitor : public BodyVisitorBase<StaticVisitor> { |
198 public: | 199 public: |
199 static inline ReturnType Visit(Map* map, HeapObject* object) { | 200 static inline ReturnType Visit(Map* map, HeapObject* object) { |
200 int object_size = BodyDescriptor::SizeOf(map, object); | 201 int object_size = BodyDescriptor::SizeOf(map, object); |
201 IteratePointers(object, BodyDescriptor::kStartOffset, object_size); | 202 IteratePointers(object, BodyDescriptor::kStartOffset, object_size); |
202 return static_cast<ReturnType>(object_size); | 203 return static_cast<ReturnType>(object_size); |
203 } | 204 } |
204 | 205 |
205 template<int object_size> | 206 template<int object_size> |
206 static inline ReturnType VisitSpecialized(Map* map, HeapObject* object) { | 207 static inline ReturnType VisitSpecialized(Map* map, HeapObject* object) { |
| 208 ASSERT(BodyDescriptor::SizeOf(map, object) == object_size); |
207 IteratePointers(object, BodyDescriptor::kStartOffset, object_size); | 209 IteratePointers(object, BodyDescriptor::kStartOffset, object_size); |
208 return static_cast<ReturnType>(object_size); | 210 return static_cast<ReturnType>(object_size); |
209 } | 211 } |
210 }; | 212 }; |
211 | 213 |
212 | 214 |
213 template<typename StaticVisitor, typename BodyDescriptor, typename ReturnType> | 215 template<typename StaticVisitor, typename BodyDescriptor, typename ReturnType> |
214 class FixedBodyVisitor : public BodyVisitorBase<StaticVisitor> { | 216 class FixedBodyVisitor : public BodyVisitorBase<StaticVisitor> { |
215 public: | 217 public: |
216 static inline ReturnType Visit(Map* map, HeapObject* object) { | 218 static inline ReturnType Visit(Map* map, HeapObject* object) { |
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261 | 263 |
262 table_.Register(kVisitSharedFunctionInfo, | 264 table_.Register(kVisitSharedFunctionInfo, |
263 &FixedBodyVisitor<StaticVisitor, | 265 &FixedBodyVisitor<StaticVisitor, |
264 SharedFunctionInfo::BodyDescriptor, | 266 SharedFunctionInfo::BodyDescriptor, |
265 int>::Visit); | 267 int>::Visit); |
266 | 268 |
267 table_.Register(kVisitSeqAsciiString, &VisitSeqAsciiString); | 269 table_.Register(kVisitSeqAsciiString, &VisitSeqAsciiString); |
268 | 270 |
269 table_.Register(kVisitSeqTwoByteString, &VisitSeqTwoByteString); | 271 table_.Register(kVisitSeqTwoByteString, &VisitSeqTwoByteString); |
270 | 272 |
| 273 table_.Register(kVisitJSFunction, |
| 274 &JSObjectVisitor:: |
| 275 template VisitSpecialized<JSFunction::kSize>); |
| 276 |
271 table_.RegisterSpecializations<DataObjectVisitor, | 277 table_.RegisterSpecializations<DataObjectVisitor, |
272 kVisitDataObject, | 278 kVisitDataObject, |
273 kVisitDataObjectGeneric>(); | 279 kVisitDataObjectGeneric>(); |
274 table_.RegisterSpecializations<JSObjectVisitor, | 280 table_.RegisterSpecializations<JSObjectVisitor, |
275 kVisitJSObject, | 281 kVisitJSObject, |
276 kVisitJSObjectGeneric>(); | 282 kVisitJSObjectGeneric>(); |
277 table_.RegisterSpecializations<StructVisitor, | 283 table_.RegisterSpecializations<StructVisitor, |
278 kVisitStruct, | 284 kVisitStruct, |
279 kVisitStructGeneric>(); | 285 kVisitStructGeneric>(); |
280 } | 286 } |
281 | 287 |
282 static inline int IterateBody(Map* map, HeapObject* obj) { | 288 static inline int IterateBody(Map* map, HeapObject* obj) { |
283 return table_.GetVisitor(map)(map, obj); | 289 return table_.GetVisitor(map)(map, obj); |
284 } | 290 } |
285 | 291 |
286 static inline void VisitPointers(Object** start, Object** end) { | 292 static inline void VisitPointers(Object** start, Object** end) { |
287 for (Object** p = start; p < end; p++) StaticVisitor::VisitPointer(p); | 293 for (Object** p = start; p < end; p++) StaticVisitor::VisitPointer(p); |
288 } | 294 } |
289 | 295 |
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373 | 379 |
374 for (; !it.done(); it.next()) { | 380 for (; !it.done(); it.next()) { |
375 it.rinfo()->template Visit<StaticVisitor>(); | 381 it.rinfo()->template Visit<StaticVisitor>(); |
376 } | 382 } |
377 } | 383 } |
378 | 384 |
379 | 385 |
380 } } // namespace v8::internal | 386 } } // namespace v8::internal |
381 | 387 |
382 #endif // V8_OBJECTS_ITERATION_H_ | 388 #endif // V8_OBJECTS_ITERATION_H_ |
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