v8::internal::IntrusiveMarking Class Reference

#include <heap.h>

Collaboration diagram for v8::internal::IntrusiveMarking:

Static Public Member Functions
static bool	IsMarked (HeapObject *object)
static void	ClearMark (HeapObject *object)
static void	SetMark (HeapObject *object)
static Map *	MapOfMarkedObject (HeapObject *object)
static int	SizeOfMarkedObject (HeapObject *object)

Private Member Functions
	STATIC_ASSERT ((kHeapObjectTag &kNotMarkedBit) !=0)

Static Private Attributes
static const uintptr_t	kNotMarkedBit = 0x1

Detailed Description

Definition at line 2409 of file heap.h.

Member Function Documentation

ClearMark()

static void v8::internal::IntrusiveMarking::ClearMark ( HeapObject *  object )

inlinestatic

Definition at line 2415 of file heap.h.

                                            {
    uintptr_t map_word = object->map_word().ToRawValue();
    object->set_map_word(MapWord::FromRawValue(map_word | kNotMarkedBit));
    DCHECK(!IsMarked(object));
  }

References DCHECK, IsMarked(), and kNotMarkedBit.

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IsMarked()

static bool v8::internal::IntrusiveMarking::IsMarked ( HeapObject *  object )

inlinestatic

Definition at line 2411 of file heap.h.

                                           {
    return (object->map_word().ToRawValue() & kNotMarkedBit) == 0;
  }

References kNotMarkedBit, and v8::internal::HeapObject::map_word().

Referenced by ClearMark(), v8::internal::Heap::GcSafeSizeOfOldObject(), and SetMark().

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MapOfMarkedObject()

static Map* v8::internal::IntrusiveMarking::MapOfMarkedObject ( HeapObject *  object )

inlinestatic

Definition at line 2427 of file heap.h.

                                                    {
    uintptr_t map_word = object->map_word().ToRawValue();
    return MapWord::FromRawValue(map_word | kNotMarkedBit).ToMap();
  }

References kNotMarkedBit.

Referenced by SizeOfMarkedObject().

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SetMark()

static void v8::internal::IntrusiveMarking::SetMark ( HeapObject *  object )

inlinestatic

Definition at line 2421 of file heap.h.

                                          {
    uintptr_t map_word = object->map_word().ToRawValue();
    object->set_map_word(MapWord::FromRawValue(map_word & ~kNotMarkedBit));
    DCHECK(IsMarked(object));
  }

References DCHECK, IsMarked(), and kNotMarkedBit.

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SizeOfMarkedObject()

static int v8::internal::IntrusiveMarking::SizeOfMarkedObject ( HeapObject *  object )

inlinestatic

Definition at line 2432 of file heap.h.

                                                    {
    return object->SizeFromMap(MapOfMarkedObject(object));
  }

References MapOfMarkedObject().

Referenced by v8::internal::Heap::GcSafeSizeOfOldObject().

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STATIC_ASSERT()

v8::internal::IntrusiveMarking::STATIC_ASSERT ( (kHeapObjectTag &kNotMarkedBit) !  = 0 )

private

Member Data Documentation

kNotMarkedBit

const uintptr_t v8::internal::IntrusiveMarking::kNotMarkedBit = 0x1

staticprivate

Definition at line 2437 of file heap.h.

Referenced by ClearMark(), IsMarked(), MapOfMarkedObject(), and SetMark().

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The documentation for this class was generated from the following file:

• /mnt/V8SourceCode/src/heap/heap.h