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

Issue 1157943003: Replace ad-hoc weakness in transition array with WeakCell. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Remove redundant dchecks Created 5 years, 6 months 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/layout-descriptor.h" 9 #include "src/layout-descriptor.h"
10 10
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431 INLINE(static void VisitJSFunction(Map* map, HeapObject* object)); 431 INLINE(static void VisitJSFunction(Map* map, HeapObject* object));
432 INLINE(static void VisitJSRegExp(Map* map, HeapObject* object)); 432 INLINE(static void VisitJSRegExp(Map* map, HeapObject* object));
433 INLINE(static void VisitJSArrayBuffer(Map* map, HeapObject* object)); 433 INLINE(static void VisitJSArrayBuffer(Map* map, HeapObject* object));
434 INLINE(static void VisitJSTypedArray(Map* map, HeapObject* object)); 434 INLINE(static void VisitJSTypedArray(Map* map, HeapObject* object));
435 INLINE(static void VisitJSDataView(Map* map, HeapObject* object)); 435 INLINE(static void VisitJSDataView(Map* map, HeapObject* object));
436 INLINE(static void VisitNativeContext(Map* map, HeapObject* object)); 436 INLINE(static void VisitNativeContext(Map* map, HeapObject* object));
437 437
438 // Mark pointers in a Map and its TransitionArray together, possibly 438 // Mark pointers in a Map and its TransitionArray together, possibly
439 // treating transitions or back pointers weak. 439 // treating transitions or back pointers weak.
440 static void MarkMapContents(Heap* heap, Map* map); 440 static void MarkMapContents(Heap* heap, Map* map);
441 static void MarkTransitionArray(Heap* heap, TransitionArray* transitions);
442 441
443 // Code flushing support. 442 // Code flushing support.
444 INLINE(static bool IsFlushable(Heap* heap, JSFunction* function)); 443 INLINE(static bool IsFlushable(Heap* heap, JSFunction* function));
445 INLINE(static bool IsFlushable(Heap* heap, SharedFunctionInfo* shared_info)); 444 INLINE(static bool IsFlushable(Heap* heap, SharedFunctionInfo* shared_info));
446 445
447 // Helpers used by code flushing support that visit pointer fields and treat 446 // Helpers used by code flushing support that visit pointer fields and treat
448 // references to code objects either strongly or weakly. 447 // references to code objects either strongly or weakly.
449 static void VisitSharedFunctionInfoStrongCode(Heap* heap, HeapObject* object); 448 static void VisitSharedFunctionInfoStrongCode(Heap* heap, HeapObject* object);
450 static void VisitSharedFunctionInfoWeakCode(Heap* heap, HeapObject* object); 449 static void VisitSharedFunctionInfoWeakCode(Heap* heap, HeapObject* object);
451 static void VisitJSFunctionStrongCode(Heap* heap, HeapObject* object); 450 static void VisitJSFunctionStrongCode(Heap* heap, HeapObject* object);
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486 // the next element. Given the head of the list, this function removes dead 485 // the next element. Given the head of the list, this function removes dead
487 // elements from the list and if requested records slots for next-element 486 // elements from the list and if requested records slots for next-element
488 // pointers. The template parameter T is a WeakListVisitor that defines how to 487 // pointers. The template parameter T is a WeakListVisitor that defines how to
489 // access the next-element pointers. 488 // access the next-element pointers.
490 template <class T> 489 template <class T>
491 Object* VisitWeakList(Heap* heap, Object* list, WeakObjectRetainer* retainer); 490 Object* VisitWeakList(Heap* heap, Object* list, WeakObjectRetainer* retainer);
492 } 491 }
493 } // namespace v8::internal 492 } // namespace v8::internal
494 493
495 #endif // V8_OBJECTS_VISITING_H_ 494 #endif // V8_OBJECTS_VISITING_H_
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