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Side by Side Diff: src/heap/objects-visiting.h

Issue 1476753003: Allow in-object properties in JSTypedArray and JSDataView. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@in-obj-weak-collections
Patch Set: Created 5 years ago
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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 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #ifndef V8_OBJECTS_VISITING_H_ 5 #ifndef V8_OBJECTS_VISITING_H_
6 #define V8_OBJECTS_VISITING_H_ 6 #define V8_OBJECTS_VISITING_H_
7 7
8 #include "src/allocation.h" 8 #include "src/allocation.h"
9 #include "src/heap/heap.h" 9 #include "src/heap/heap.h"
10 #include "src/heap/spaces.h" 10 #include "src/heap/spaces.h"
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73 V(Oddball) \ 73 V(Oddball) \
74 V(Code) \ 74 V(Code) \
75 V(Map) \ 75 V(Map) \
76 V(Cell) \ 76 V(Cell) \
77 V(PropertyCell) \ 77 V(PropertyCell) \
78 V(WeakCell) \ 78 V(WeakCell) \
79 V(SharedFunctionInfo) \ 79 V(SharedFunctionInfo) \
80 V(JSFunction) \ 80 V(JSFunction) \
81 V(JSWeakCollection) \ 81 V(JSWeakCollection) \
82 V(JSArrayBuffer) \ 82 V(JSArrayBuffer) \
83 V(JSTypedArray) \
84 V(JSDataView) \
85 V(JSRegExp) 83 V(JSRegExp)
86 84
87 // For data objects, JS objects and structs along with generic visitor which 85 // For data objects, JS objects and structs along with generic visitor which
88 // can visit object of any size we provide visitors specialized by 86 // can visit object of any size we provide visitors specialized by
89 // object size in words. 87 // object size in words.
90 // Ids of specialized visitors are declared in a linear order (without 88 // Ids of specialized visitors are declared in a linear order (without
91 // holes) starting from the id of visitor specialized for 2 words objects 89 // holes) starting from the id of visitor specialized for 2 words objects
92 // (base visitor id) and ending with the id of generic visitor. 90 // (base visitor id) and ending with the id of generic visitor.
93 // Method GetVisitorIdForSize depends on this ordering to calculate visitor 91 // Method GetVisitorIdForSize depends on this ordering to calculate visitor
94 // id of specialized visitor from given instance size, base visitor id and 92 // id of specialized visitor from given instance size, base visitor id and
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286 INLINE(static int VisitSeqTwoByteString(Map* map, HeapObject* object)) { 284 INLINE(static int VisitSeqTwoByteString(Map* map, HeapObject* object)) {
287 return SeqTwoByteString::cast(object) 285 return SeqTwoByteString::cast(object)
288 ->SeqTwoByteStringSize(map->instance_type()); 286 ->SeqTwoByteStringSize(map->instance_type());
289 } 287 }
290 288
291 INLINE(static int VisitFreeSpace(Map* map, HeapObject* object)) { 289 INLINE(static int VisitFreeSpace(Map* map, HeapObject* object)) {
292 return FreeSpace::cast(object)->size(); 290 return FreeSpace::cast(object)->size();
293 } 291 }
294 292
295 INLINE(static int VisitJSArrayBuffer(Map* map, HeapObject* object)); 293 INLINE(static int VisitJSArrayBuffer(Map* map, HeapObject* object));
296 INLINE(static int VisitJSTypedArray(Map* map, HeapObject* object));
297 INLINE(static int VisitJSDataView(Map* map, HeapObject* object));
298 INLINE(static int VisitBytecodeArray(Map* map, HeapObject* object)); 294 INLINE(static int VisitBytecodeArray(Map* map, HeapObject* object));
299 295
300 class DataObjectVisitor { 296 class DataObjectVisitor {
301 public: 297 public:
302 template <int object_size> 298 template <int object_size>
303 static inline int VisitSpecialized(Map* map, HeapObject* object) { 299 static inline int VisitSpecialized(Map* map, HeapObject* object) {
304 return object_size; 300 return object_size;
305 } 301 }
306 302
307 INLINE(static int Visit(Map* map, HeapObject* object)) { 303 INLINE(static int Visit(Map* map, HeapObject* object)) {
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366 362
367 protected: 363 protected:
368 INLINE(static void VisitMap(Map* map, HeapObject* object)); 364 INLINE(static void VisitMap(Map* map, HeapObject* object));
369 INLINE(static void VisitCode(Map* map, HeapObject* object)); 365 INLINE(static void VisitCode(Map* map, HeapObject* object));
370 INLINE(static void VisitSharedFunctionInfo(Map* map, HeapObject* object)); 366 INLINE(static void VisitSharedFunctionInfo(Map* map, HeapObject* object));
371 INLINE(static void VisitAllocationSite(Map* map, HeapObject* object)); 367 INLINE(static void VisitAllocationSite(Map* map, HeapObject* object));
372 INLINE(static void VisitWeakCollection(Map* map, HeapObject* object)); 368 INLINE(static void VisitWeakCollection(Map* map, HeapObject* object));
373 INLINE(static void VisitJSFunction(Map* map, HeapObject* object)); 369 INLINE(static void VisitJSFunction(Map* map, HeapObject* object));
374 INLINE(static void VisitJSRegExp(Map* map, HeapObject* object)); 370 INLINE(static void VisitJSRegExp(Map* map, HeapObject* object));
375 INLINE(static void VisitJSArrayBuffer(Map* map, HeapObject* object)); 371 INLINE(static void VisitJSArrayBuffer(Map* map, HeapObject* object));
376 INLINE(static void VisitJSTypedArray(Map* map, HeapObject* object));
377 INLINE(static void VisitJSDataView(Map* map, HeapObject* object));
378 INLINE(static void VisitNativeContext(Map* map, HeapObject* object)); 372 INLINE(static void VisitNativeContext(Map* map, HeapObject* object));
379 INLINE(static void VisitBytecodeArray(Map* map, HeapObject* object)); 373 INLINE(static void VisitBytecodeArray(Map* map, HeapObject* object));
380 374
381 // Mark pointers in a Map and its TransitionArray together, possibly 375 // Mark pointers in a Map and its TransitionArray together, possibly
382 // treating transitions or back pointers weak. 376 // treating transitions or back pointers weak.
383 static void MarkMapContents(Heap* heap, Map* map); 377 static void MarkMapContents(Heap* heap, Map* map);
384 static void MarkTransitionArray(Heap* heap, TransitionArray* transitions); 378 static void MarkTransitionArray(Heap* heap, TransitionArray* transitions);
385 379
386 // Mark pointers in the optimized code map that should act as strong 380 // Mark pointers in the optimized code map that should act as strong
387 // references, possibly treating some entries weak. 381 // references, possibly treating some entries weak.
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437 // the next element. Given the head of the list, this function removes dead 431 // the next element. Given the head of the list, this function removes dead
438 // elements from the list and if requested records slots for next-element 432 // elements from the list and if requested records slots for next-element
439 // pointers. The template parameter T is a WeakListVisitor that defines how to 433 // pointers. The template parameter T is a WeakListVisitor that defines how to
440 // access the next-element pointers. 434 // access the next-element pointers.
441 template <class T> 435 template <class T>
442 Object* VisitWeakList(Heap* heap, Object* list, WeakObjectRetainer* retainer); 436 Object* VisitWeakList(Heap* heap, Object* list, WeakObjectRetainer* retainer);
443 } // namespace internal 437 } // namespace internal
444 } // namespace v8 438 } // namespace v8
445 439
446 #endif // V8_OBJECTS_VISITING_H_ 440 #endif // V8_OBJECTS_VISITING_H_
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