HeapObjectsMap Class Reference

#include <heap-snapshot-generator.h>

Public Member Functions
	HeapObjectsMap (Heap *heap)
Heap *	heap () const
SnapshotObjectId	FindEntry (Address addr)
SnapshotObjectId	FindOrAddEntry (Address addr, unsigned int size, bool accessed=true)
bool	MoveObject (Address from, Address to, int size)
void	UpdateObjectSize (Address addr, int size)
SnapshotObjectId	last_assigned_id () const
void	StopHeapObjectsTracking ()
SnapshotObjectId	PushHeapObjectsStats (OutputStream *stream)
size_t	GetUsedMemorySize () const
SnapshotObjectId	GenerateId (v8::RetainedObjectInfo *info)
int	FindUntrackedObjects ()
void	UpdateHeapObjectsMap ()
void	RemoveDeadEntries ()

Static Public Member Functions
static SnapshotObjectId	GetNthGcSubrootId (int delta)

Static Public Attributes
static const int	kObjectIdStep = 2
static const SnapshotObjectId	kInternalRootObjectId = 1
static const SnapshotObjectId	kGcRootsObjectId
static const SnapshotObjectId	kNativesRootObjectId
static const SnapshotObjectId	kGcRootsFirstSubrootId
static const SnapshotObjectId	kFirstAvailableObjectId

Detailed Description

Definition at line 227 of file heap-snapshot-generator.h.

Constructor & Destructor Documentation

HeapObjectsMap ( Heap *  heap )

explicit

Definition at line 384 of file heap-snapshot-generator.cc.

References List< T, P >::Add(), and v8::internal::NULL.

Member Function Documentation

SnapshotObjectId FindEntry

(

Address

addr

)

Definition at line 452 of file heap-snapshot-generator.cc.

References ASSERT, List< T, P >::at(), v8::internal::ComputePointerHash(), TemplateHashMapImpl< AllocationPolicy >::Lookup(), v8::internal::NULL, and TemplateHashMapImpl< AllocationPolicy >::occupancy().

SnapshotObjectId FindOrAddEntry	(	Address	addr,
		unsigned int	size,
		bool	accessed = true
	)

Definition at line 463 of file heap-snapshot-generator.cc.

References List< T, P >::Add(), ASSERT, List< T, P >::at(), v8::internal::ComputePointerHash(), HeapObjectsMap::kObjectIdStep, TemplateHashMapImpl< AllocationPolicy >::Lookup(), v8::internal::NULL, TemplateHashMapImpl< AllocationPolicy >::occupancy(), v8::internal::PrintF(), and v8::internal::size.

Referenced by V8HeapExplorer::AddEntry(), AllocationTracker::AllocationEvent(), HeapObjectsMap::UpdateHeapObjectsMap(), and HeapObjectsMap::UpdateObjectSize().

int FindUntrackedObjects

(

)

Definition at line 570 of file heap-snapshot-generator.cc.

References List< T, P >::Add(), List< T, P >::at(), CHECK_EQ, v8::internal::ComputePointerHash(), TemplateHashMapImpl< AllocationPolicy >::Lookup(), v8::internal::NULL, obj, TemplateHashMapImpl< AllocationPolicy >::occupancy(), v8::internal::PrintF(), and List< T, P >::Sort().

Referenced by HeapObjectsTracker::~HeapObjectsTracker().

SnapshotObjectId GenerateId

(

v8::RetainedObjectInfo *

info

)

Definition at line 711 of file heap-snapshot-generator.cc.

References v8::internal::ComputeIntegerHash(), RetainedObjectInfo::GetElementCount(), RetainedObjectInfo::GetHash(), RetainedObjectInfo::GetLabel(), Heap::HashSeed(), and StringHasher::HashSequentialString().

Referenced by BasicHeapEntriesAllocator::AllocateEntry().

SnapshotObjectId GetNthGcSubrootId ( int  delta )

inlinestatic

Definition at line 69 of file heap-snapshot-generator-inl.h.

References HeapObjectsMap::kGcRootsFirstSubrootId, and HeapObjectsMap::kObjectIdStep.

Referenced by HeapSnapshot::AddGcSubrootEntry().

size_t GetUsedMemorySize

(

)

const

Definition at line 725 of file heap-snapshot-generator.cc.

References TemplateHashMapImpl< AllocationPolicy >::capacity(), and v8::internal::GetMemoryUsedByList().

Heap* heap ( ) const

inline

Definition at line 231 of file heap-snapshot-generator.h.

Referenced by AllocationTracker::AllocationEvent().

SnapshotObjectId last_assigned_id ( ) const

inline

Definition at line 239 of file heap-snapshot-generator.h.

References HeapObjectsMap::kObjectIdStep.

Referenced by HeapObjectsMap::PushHeapObjectsStats(), and HeapSnapshot::RememberLastJSObjectId().

bool MoveObject	(	Address	from,
		Address	to,
		int	size
	)

Definition at line 399 of file heap-snapshot-generator.cc.

References ASSERT, List< T, P >::at(), v8::internal::ComputePointerHash(), TemplateHashMapImpl< AllocationPolicy >::Lookup(), v8::internal::NULL, v8::internal::PrintF(), and TemplateHashMapImpl< AllocationPolicy >::Remove().

SnapshotObjectId PushHeapObjectsStats

(

OutputStream *

stream

)

Definition at line 635 of file heap-snapshot-generator.cc.

References List< T, P >::Add(), ASSERT, OutputStream::EndOfStream(), List< T, P >::first(), OutputStream::GetChunkSize(), OutputStream::kAbort, List< T, P >::last(), HeapObjectsMap::last_assigned_id(), HeapObjectsMap::UpdateHeapObjectsMap(), and OutputStream::WriteHeapStatsChunk().

void RemoveDeadEntries

(

)

Definition at line 681 of file heap-snapshot-generator.cc.

References ASSERT, List< T, P >::at(), v8::internal::ComputePointerHash(), TemplateHashMapImpl< AllocationPolicy >::Lookup(), v8::internal::NULL, TemplateHashMapImpl< AllocationPolicy >::occupancy(), and TemplateHashMapImpl< AllocationPolicy >::Remove().

Referenced by HeapObjectsMap::UpdateHeapObjectsMap().

void StopHeapObjectsTracking

(

)

Definition at line 492 of file heap-snapshot-generator.cc.

void UpdateHeapObjectsMap

(

)

Definition at line 497 of file heap-snapshot-generator.cc.

References Heap::CollectAllGarbage(), HeapObjectsMap::FindOrAddEntry(), Heap::kMakeHeapIterableMask, v8::internal::NULL, obj, TemplateHashMapImpl< AllocationPolicy >::occupancy(), v8::internal::PrintF(), and HeapObjectsMap::RemoveDeadEntries().

Referenced by HeapObjectsMap::PushHeapObjectsStats().

void UpdateObjectSize	(	Address	addr,
		int	size
	)

Definition at line 447 of file heap-snapshot-generator.cc.

References HeapObjectsMap::FindOrAddEntry().

Field Documentation

const SnapshotObjectId kFirstAvailableObjectId

static

Initial value:

=
    HeapObjectsMap::kGcRootsFirstSubrootId +
    VisitorSynchronization::kNumberOfSyncTags * HeapObjectsMap::kObjectIdStep

Definition at line 255 of file heap-snapshot-generator.h.

const SnapshotObjectId kGcRootsFirstSubrootId

static

Initial value:

=
    HeapObjectsMap::kGcRootsObjectId + HeapObjectsMap::kObjectIdStep

Definition at line 254 of file heap-snapshot-generator.h.

Referenced by HeapObjectsMap::GetNthGcSubrootId().

const SnapshotObjectId kGcRootsObjectId

static

Initial value:

=
    HeapObjectsMap::kInternalRootObjectId + HeapObjectsMap::kObjectIdStep

Definition at line 252 of file heap-snapshot-generator.h.

Referenced by HeapSnapshot::AddGcRootsEntry().

const SnapshotObjectId kInternalRootObjectId = 1

static

Definition at line 251 of file heap-snapshot-generator.h.

Referenced by HeapSnapshot::AddRootEntry().

const SnapshotObjectId kNativesRootObjectId

static

Definition at line 253 of file heap-snapshot-generator.h.

const int kObjectIdStep = 2

static

Definition at line 250 of file heap-snapshot-generator.h.

Referenced by HeapObjectsMap::FindOrAddEntry(), HeapObjectsMap::GetNthGcSubrootId(), and HeapObjectsMap::last_assigned_id().

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

• src/heap-snapshot-generator.h
• src/heap-snapshot-generator-inl.h
• src/heap-snapshot-generator.cc