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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 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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85 V(ConsString) \ | 85 V(ConsString) \ |
86 V(SlicedString) \ | 86 V(SlicedString) \ |
87 V(Symbol) \ | 87 V(Symbol) \ |
88 V(Oddball) \ | 88 V(Oddball) \ |
89 V(Code) \ | 89 V(Code) \ |
90 V(Map) \ | 90 V(Map) \ |
91 V(PropertyCell) \ | 91 V(PropertyCell) \ |
92 V(SharedFunctionInfo) \ | 92 V(SharedFunctionInfo) \ |
93 V(JSFunction) \ | 93 V(JSFunction) \ |
94 V(JSWeakMap) \ | 94 V(JSWeakMap) \ |
| 95 V(JSArrayBuffer) \ |
| 96 V(JSTypedArray) \ |
95 V(JSRegExp) | 97 V(JSRegExp) |
96 | 98 |
97 // For data objects, JS objects and structs along with generic visitor which | 99 // For data objects, JS objects and structs along with generic visitor which |
98 // can visit object of any size we provide visitors specialized by | 100 // can visit object of any size we provide visitors specialized by |
99 // object size in words. | 101 // object size in words. |
100 // Ids of specialized visitors are declared in a linear order (without | 102 // Ids of specialized visitors are declared in a linear order (without |
101 // holes) starting from the id of visitor specialized for 2 words objects | 103 // holes) starting from the id of visitor specialized for 2 words objects |
102 // (base visitor id) and ending with the id of generic visitor. | 104 // (base visitor id) and ending with the id of generic visitor. |
103 // Method GetVisitorIdForSize depends on this ordering to calculate visitor | 105 // Method GetVisitorIdForSize depends on this ordering to calculate visitor |
104 // id of specialized visitor from given instance size, base visitor id and | 106 // id of specialized visitor from given instance size, base visitor id and |
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326 | 328 |
327 INLINE(static int VisitSeqTwoByteString(Map* map, HeapObject* object)) { | 329 INLINE(static int VisitSeqTwoByteString(Map* map, HeapObject* object)) { |
328 return SeqTwoByteString::cast(object)-> | 330 return SeqTwoByteString::cast(object)-> |
329 SeqTwoByteStringSize(map->instance_type()); | 331 SeqTwoByteStringSize(map->instance_type()); |
330 } | 332 } |
331 | 333 |
332 INLINE(static int VisitFreeSpace(Map* map, HeapObject* object)) { | 334 INLINE(static int VisitFreeSpace(Map* map, HeapObject* object)) { |
333 return FreeSpace::cast(object)->Size(); | 335 return FreeSpace::cast(object)->Size(); |
334 } | 336 } |
335 | 337 |
| 338 INLINE(static int VisitJSArrayBuffer(Map* map, HeapObject* object)); |
| 339 INLINE(static int VisitJSTypedArray(Map* map, HeapObject* object)); |
| 340 |
336 class DataObjectVisitor { | 341 class DataObjectVisitor { |
337 public: | 342 public: |
338 template<int object_size> | 343 template<int object_size> |
339 static inline int VisitSpecialized(Map* map, HeapObject* object) { | 344 static inline int VisitSpecialized(Map* map, HeapObject* object) { |
340 return object_size; | 345 return object_size; |
341 } | 346 } |
342 | 347 |
343 INLINE(static int Visit(Map* map, HeapObject* object)) { | 348 INLINE(static int Visit(Map* map, HeapObject* object)) { |
344 return map->instance_size(); | 349 return map->instance_size(); |
345 } | 350 } |
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400 // Mark non-optimize code for functions inlined into the given optimized | 405 // Mark non-optimize code for functions inlined into the given optimized |
401 // code. This will prevent it from being flushed. | 406 // code. This will prevent it from being flushed. |
402 static void MarkInlinedFunctionsCode(Heap* heap, Code* code); | 407 static void MarkInlinedFunctionsCode(Heap* heap, Code* code); |
403 | 408 |
404 protected: | 409 protected: |
405 INLINE(static void VisitMap(Map* map, HeapObject* object)); | 410 INLINE(static void VisitMap(Map* map, HeapObject* object)); |
406 INLINE(static void VisitCode(Map* map, HeapObject* object)); | 411 INLINE(static void VisitCode(Map* map, HeapObject* object)); |
407 INLINE(static void VisitSharedFunctionInfo(Map* map, HeapObject* object)); | 412 INLINE(static void VisitSharedFunctionInfo(Map* map, HeapObject* object)); |
408 INLINE(static void VisitJSFunction(Map* map, HeapObject* object)); | 413 INLINE(static void VisitJSFunction(Map* map, HeapObject* object)); |
409 INLINE(static void VisitJSRegExp(Map* map, HeapObject* object)); | 414 INLINE(static void VisitJSRegExp(Map* map, HeapObject* object)); |
| 415 INLINE(static void VisitJSArrayBuffer(Map* map, HeapObject* object)); |
| 416 INLINE(static void VisitJSTypedArray(Map* map, HeapObject* object)); |
410 INLINE(static void VisitNativeContext(Map* map, HeapObject* object)); | 417 INLINE(static void VisitNativeContext(Map* map, HeapObject* object)); |
411 | 418 |
412 // Mark pointers in a Map and its TransitionArray together, possibly | 419 // Mark pointers in a Map and its TransitionArray together, possibly |
413 // treating transitions or back pointers weak. | 420 // treating transitions or back pointers weak. |
414 static void MarkMapContents(Heap* heap, Map* map); | 421 static void MarkMapContents(Heap* heap, Map* map); |
415 static void MarkTransitionArray(Heap* heap, TransitionArray* transitions); | 422 static void MarkTransitionArray(Heap* heap, TransitionArray* transitions); |
416 | 423 |
417 // Code flushing support. | 424 // Code flushing support. |
418 INLINE(static bool IsFlushable(Heap* heap, JSFunction* function)); | 425 INLINE(static bool IsFlushable(Heap* heap, JSFunction* function)); |
419 INLINE(static bool IsFlushable(Heap* heap, SharedFunctionInfo* shared_info)); | 426 INLINE(static bool IsFlushable(Heap* heap, SharedFunctionInfo* shared_info)); |
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454 | 461 |
455 | 462 |
456 template<typename StaticVisitor> | 463 template<typename StaticVisitor> |
457 VisitorDispatchTable<typename StaticMarkingVisitor<StaticVisitor>::Callback> | 464 VisitorDispatchTable<typename StaticMarkingVisitor<StaticVisitor>::Callback> |
458 StaticMarkingVisitor<StaticVisitor>::table_; | 465 StaticMarkingVisitor<StaticVisitor>::table_; |
459 | 466 |
460 | 467 |
461 } } // namespace v8::internal | 468 } } // namespace v8::internal |
462 | 469 |
463 #endif // V8_OBJECTS_VISITING_H_ | 470 #endif // V8_OBJECTS_VISITING_H_ |
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