#include <raw_object.h>

Inheritance diagram for dart::UntaggedFinalizerEntry:

Public Member Functions
intptr_t	external_size ()

void	set_external_size (intptr_t value)

Public Member Functions inherited from dart::UntaggedObject
	COMPILE_ASSERT (kNotMarkedBit+kBarrierOverlapShift==kAlwaysSetBit)

	COMPILE_ASSERT (kNewOrEvacuationCandidateBit+kBarrierOverlapShift==kOldAndNotRememberedBit)

	COMPILE_ASSERT (kCardRememberedBit==0)

	COMPILE_ASSERT (kBitsPerByte *sizeof(ClassIdTagType) >=kClassIdTagSize)

	COMPILE_ASSERT (kClassIdTagMax==(1<< kClassIdTagSize) - 1)

bool	IsNewObject () const

bool	IsOldObject () const

uword	tags () const

uword	tags_ignore_race () const

bool	IsMarked () const

void	SetMarkBit ()

void	SetMarkBitUnsynchronized ()

void	SetMarkBitRelease ()

void	ClearMarkBit ()

void	ClearMarkBitUnsynchronized ()

DART_WARN_UNUSED_RESULT bool	TryAcquireMarkBit ()

bool	IsEvacuationCandidate ()

void	SetIsEvacuationCandidate ()

void	SetIsEvacuationCandidateUnsynchronized ()

void	ClearIsEvacuationCandidateUnsynchronized ()

bool	IsCanonical () const

void	SetCanonical ()

void	ClearCanonical ()

bool	IsImmutable () const

void	SetImmutable ()

void	ClearImmutable ()

bool	InVMIsolateHeap () const

bool	IsRemembered () const

bool	TryAcquireRememberedBit ()

void	ClearRememberedBit ()

void	ClearRememberedBitUnsynchronized ()

DART_FORCE_INLINE void	EnsureInRememberedSet (Thread *thread)

bool	IsCardRemembered () const

void	SetCardRememberedBitUnsynchronized ()

intptr_t	GetClassId () const

intptr_t	HeapSize () const

intptr_t	HeapSize (uword tags) const

bool	Contains (uword addr) const

void	Validate (IsolateGroup *isolate_group) const

intptr_t	VisitPointers (ObjectPointerVisitor *visitor)

template<class V >
DART_FORCE_INLINE intptr_t	VisitPointersNonvirtual (V *visitor)

void	VisitPointersPrecise (ObjectPointerVisitor *visitor)

Friends
template<typename Type , typename PtrType >
class	GCLinkedList

template<bool >
class	MarkingVisitorBase

template<bool >
class	ScavengerVisitorBase

class	Scavenger

class	ObjectGraph

template<typename GCVisitorType >
void	MournFinalizerEntry (GCVisitorType *, FinalizerEntryPtr)

Additional Inherited Members
Public Types inherited from dart::UntaggedObject
enum	TagBits { kCardRememberedBit = 0 , kCanonicalBit = 1 , kNotMarkedBit = 2 , kNewOrEvacuationCandidateBit = 3 , kAlwaysSetBit = 4 , kOldAndNotRememberedBit = 5 , kImmutableBit = 6 , kReservedBit = 7 , kSizeTagPos = kReservedBit + 1 , kSizeTagSize = 4 , kClassIdTagPos = kSizeTagPos + kSizeTagSize , kClassIdTagSize = 20 , kHashTagPos = kClassIdTagPos + kClassIdTagSize , kHashTagSize = 32 }

Static Public Member Functions inherited from dart::UntaggedObject
static bool	IsMarked (uword tags)

static bool	IsEvacuationCandidate (uword tags)

static ObjectPtr	FromAddr (uword addr)

static uword	ToAddr (const UntaggedObject *raw_obj)

static uword	ToAddr (const ObjectPtr raw_obj)

static bool	IsCanonical (intptr_t value)

Static Public Attributes inherited from dart::UntaggedInstance
static constexpr bool	kContainsCompressedPointers = false

Static Public Attributes inherited from dart::UntaggedObject
static constexpr intptr_t	kGenerationalBarrierMask

static constexpr intptr_t	kIncrementalBarrierMask = 1 << kNotMarkedBit

static constexpr intptr_t	kBarrierOverlapShift = 2

Protected Member Functions inherited from dart::UntaggedObject
template<typename type , std::memory_order order = std::memory_order_relaxed>
type	LoadPointer (type const *addr) const

template<typename type , typename compressed_type , std::memory_order order = std::memory_order_relaxed>
type	LoadCompressedPointer (compressed_type const *addr) const

uword	heap_base () const

template<typename type , std::memory_order order = std::memory_order_relaxed>
void	StorePointer (type const *addr, type value)

template<typename type , typename compressed_type , std::memory_order order = std::memory_order_relaxed>
void	StoreCompressedPointer (compressed_type const *addr, type value)

template<typename type >
void	StorePointer (type const addr, type value, Thread thread)

template<typename type , typename compressed_type >
void	StoreCompressedPointer (compressed_type const addr, type value, Thread thread)

template<typename type >
void	StorePointerUnaligned (type const addr, type value, Thread thread)

template<typename type , std::memory_order order = std::memory_order_relaxed, typename value_type = type>
void	StoreArrayPointer (type const *addr, value_type value)

template<typename type , typename value_type = type>
void	StoreArrayPointer (type const addr, value_type value, Thread thread)

template<typename type , typename compressed_type , std::memory_order order>
void	StoreCompressedArrayPointer (compressed_type const *addr, type value)

template<typename type , typename compressed_type , std::memory_order order>
void	StoreCompressedArrayPointer (compressed_type const addr, type value, Thread thread)

template<typename type , typename compressed_type >
void	StoreCompressedArrayPointer (compressed_type const addr, type value, Thread thread)

template<typename type , typename compressed_type , std::memory_order order = std::memory_order_relaxed>
type	ExchangeCompressedPointer (compressed_type const *addr, type value)

template<std::memory_order order = std::memory_order_relaxed>
SmiPtr	LoadSmi (SmiPtr const *addr) const

template<std::memory_order order = std::memory_order_relaxed>
SmiPtr	LoadCompressedSmi (CompressedSmiPtr const *addr) const

template<typename type , std::memory_order order = std::memory_order_relaxed>
void	StoreSmi (type const *addr, type value)

template<std::memory_order order = std::memory_order_relaxed>
void	StoreCompressedSmi (CompressedSmiPtr const *addr, SmiPtr value)

Static Protected Member Functions inherited from dart::UntaggedObject
template<typename T >
static DART_FORCE_INLINE uword	from_offset ()

template<typename T >
static DART_FORCE_INLINE uword	to_offset (intptr_t length=0)

template<>
DART_FORCE_INLINE uword	from_offset ()

template<>
DART_FORCE_INLINE uword	to_offset (intptr_t length)

template<>
DART_FORCE_INLINE uword	to_offset (intptr_t length)

template<>
DART_FORCE_INLINE uword	to_offset (intptr_t length)

Static Protected Attributes inherited from dart::UntaggedObject
static constexpr bool	kContainsCompressedPointers = false

static constexpr bool	kContainsPointerFields = false

Detailed Description

Definition at line 3692 of file raw_object.h.

Member Function Documentation

◆ external_size()

intptr_t dart::UntaggedFinalizerEntry::external_size ( )

inline

Definition at line 3694 of file raw_object.h.

3694{ return external_size_; }

◆ set_external_size()

void dart::UntaggedFinalizerEntry::set_external_size ( intptr_t value )

inline

Definition at line 3695 of file raw_object.h.

3695{ external_size_ = value; }

value

uint8_t value

Definition: fl_standard_message_codec.cc:36

Friends And Related Function Documentation

◆ GCLinkedList

template<typename Type , typename PtrType >

friend class GCLinkedList

friend

Definition at line 3718 of file raw_object.h.

◆ MarkingVisitorBase

template<bool >

friend class MarkingVisitorBase

friend

Definition at line 3722 of file raw_object.h.

◆ MournFinalizerEntry

template<typename GCVisitorType >

void MournFinalizerEntry	(	GCVisitorType *	visitor,
		FinalizerEntryPtr	current_entry
	)

friend

Definition at line 162 of file gc_shared.h.

                                                          {
  TRACE_FINALIZER("Processing Entry %p", current_entry->untag());
 
  const Heap::Space before_gc_space = SpaceForExternal(current_entry);
  const bool value_collected_this_gc =
      GCVisitorType::ForwardOrSetNullIfCollected(
          current_entry, &current_entry->untag()->value_);
  if (!value_collected_this_gc && before_gc_space == Heap::kNew) {
    const Heap::Space after_gc_space = SpaceForExternal(current_entry);
    if (after_gc_space == Heap::kOld) {
      const intptr_t external_size = current_entry->untag()->external_size_;
      TRACE_FINALIZER("Promoting external size %" Pd
                      " bytes from new to old space",
                      external_size);
      visitor->isolate_group()->heap()->PromotedExternal(external_size);
    }
  }
  GCVisitorType::ForwardOrSetNullIfCollected(current_entry,
                                             &current_entry->untag()->detach_);
  GCVisitorType::ForwardOrSetNullIfCollected(
      current_entry, &current_entry->untag()->finalizer_);
 
  ObjectPtr token_object = current_entry->untag()->token();
  // See sdk/lib/_internal/vm/lib/internal_patch.dart FinalizerBase.detach.
  const bool is_detached = token_object == current_entry;
 
  if (!value_collected_this_gc) return;
  if (is_detached) return;
 
  FinalizerBasePtr finalizer = current_entry->untag()->finalizer();
 
  if (finalizer.IsRawNull()) {
    TRACE_FINALIZER("Value collected entry %p finalizer null",
                    current_entry->untag());
 
    // Do nothing, the finalizer has been GCed.
    return;
  }
 
  TRACE_FINALIZER("Value collected entry %p finalizer %p",
                  current_entry->untag(), finalizer->untag());
 
  FinalizerPtr finalizer_dart = static_cast<FinalizerPtr>(finalizer);
  // Move entry to entries collected and current head of that list as
  // the next element. Using a atomic exchange satisfies concurrency
  // between the parallel GC tasks.
  // We rely on the fact that the mutator thread is not running to avoid
  // races between GC and mutator modifying Finalizer.entries_collected.
  //
  // We only run in serial marker or in the finalize step in the marker,
  // both are in safepoint.
  // The main scavenger worker is at safepoint, the other scavenger
  // workers are not, but they bypass safepoint because the main
  // worker is at a safepoint already.
  ASSERT(Thread::Current()->OwnsGCSafepoint() ||
         Thread::Current()->BypassSafepoints());
 
  if (finalizer.IsNativeFinalizer()) {
    NativeFinalizerPtr native_finalizer =
        static_cast<NativeFinalizerPtr>(finalizer);
 
    // Immediately call native callback.
    RunNativeFinalizerCallback(native_finalizer, current_entry, before_gc_space,
                               visitor);
 
    // Fall-through sending a message to clear the entries and remove
    // from detachments.
  }
 
  FinalizerEntryPtr previous_head =
      finalizer_dart->untag()->exchange_entries_collected(current_entry);
  current_entry->untag()->set_next(previous_head);
  const bool first_entry = previous_head.IsRawNull();
 
  // If we're in the marker, we need to ensure that we release the store
  // buffer afterwards.
  // If we're in the scavenger and have the finalizer in old space and
  // a new space entry, we don't need to release the store buffer.
  if (!first_entry && previous_head->IsNewObject() &&
      current_entry->IsOldObject()) {
    TRACE_FINALIZER("Entry %p (old) next is %p (new)", current_entry->untag(),
                    previous_head->untag());
    // We must release the thread's store buffer block.
  }
 
  // Schedule calling Dart finalizer.
  if (first_entry) {
    Isolate* isolate = finalizer->untag()->isolate_;
    if (isolate == nullptr) {
      TRACE_FINALIZER("Not scheduling finalizer %p callback on isolate null",
                      finalizer->untag());
    } else {
      TRACE_FINALIZER("Scheduling finalizer %p callback on isolate %p",
                      finalizer->untag(), isolate);
 
      PersistentHandle* handle =
          isolate->group()->api_state()->AllocatePersistentHandle();
      handle->set_ptr(finalizer);
      MessageHandler* message_handler = isolate->message_handler();
      message_handler->PostMessage(
          Message::New(handle, Message::kNormalPriority),
          /*before_events*/ false);
    }
  }
}

◆ ObjectGraph

friend class ObjectGraph

friend

Definition at line 3726 of file raw_object.h.

◆ Scavenger

friend class Scavenger

friend

Definition at line 3725 of file raw_object.h.

◆ ScavengerVisitorBase

template<bool >

friend class ScavengerVisitorBase

friend

Definition at line 3724 of file raw_object.h.

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

third_party/dart-lang/sdk/runtime/vm/raw_object.h

Public Member Functions

Friends

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ external_size()

◆ set_external_size()

Friends And Related Function Documentation

◆ GCLinkedList

◆ MarkingVisitorBase

◆ MournFinalizerEntry

◆ ObjectGraph

◆ Scavenger

◆ ScavengerVisitorBase