#include <object.h>

Inheritance diagram for dart::PcDescriptors:

Classes
class	Iterator

Public Member Functions
void	Verify (const Function &function) const

void	PrintToJSONObject (JSONObject *jsobj, bool ref) const

intptr_t	Length () const

bool	Equals (const PcDescriptors &other) const

void	WriteToBuffer (BaseTextBuffer *buffer, uword base) const

Public Member Functions inherited from dart::Object
virtual	~Object ()

ObjectPtr	ptr () const

void	operator= (ObjectPtr value)

bool	IsCanonical () const

void	SetCanonical () const

void	ClearCanonical () const

bool	IsImmutable () const

void	SetImmutable () const

void	ClearImmutable () const

intptr_t	GetClassId () const

ClassPtr	clazz () const

	CLASS_LIST_FOR_HANDLES (DEFINE_CLASS_TESTER)

bool	IsNull () const

virtual const char *	ToCString () const

void	PrintJSON (JSONStream *stream, bool ref=true) const

virtual void	PrintJSONImpl (JSONStream *stream, bool ref) const

void	PrintImplementationFields (JSONStream *stream) const

virtual void	PrintImplementationFieldsImpl (const JSONArray &jsarr_fields) const

virtual const char *	JSONType () const

virtual StringPtr	DictionaryName () const

bool	IsNew () const

bool	IsOld () const

bool	InVMIsolateHeap () const

void	Print () const

Static Public Member Functions
static intptr_t	HeaderSize ()

static intptr_t	UnroundedSize (PcDescriptorsPtr desc)

static intptr_t	UnroundedSize (intptr_t len)

static intptr_t	InstanceSize ()

static intptr_t	InstanceSize (intptr_t len)

static PcDescriptorsPtr	New (const void *delta_encoded_data, intptr_t size)

static void	PrintHeaderString ()

Static Public Member Functions inherited from dart::Object
static ObjectPtr	RawCast (ObjectPtr obj)

static constexpr bool	ContainsCompressedPointers ()

static intptr_t	tags_offset ()

static Object &	Handle ()

static Object &	Handle (Zone *zone)

static Object &	Handle (ObjectPtr ptr)

static Object &	Handle (Zone *zone, ObjectPtr ptr)

static Object &	ZoneHandle ()

static Object &	ZoneHandle (Zone *zone)

static Object &	ZoneHandle (ObjectPtr ptr)

static Object &	ZoneHandle (Zone *zone, ObjectPtr ptr)

static Object *	ReadOnlyHandle ()

static ObjectPtr	null ()

static void	set_vm_isolate_snapshot_object_table (const Array &table)

static ClassPtr	class_class ()

static ClassPtr	dynamic_class ()

static ClassPtr	void_class ()

static ClassPtr	type_parameters_class ()

static ClassPtr	type_arguments_class ()

static ClassPtr	patch_class_class ()

static ClassPtr	function_class ()

static ClassPtr	closure_data_class ()

static ClassPtr	ffi_trampoline_data_class ()

static ClassPtr	field_class ()

static ClassPtr	script_class ()

static ClassPtr	library_class ()

static ClassPtr	namespace_class ()

static ClassPtr	kernel_program_info_class ()

static ClassPtr	code_class ()

static ClassPtr	instructions_class ()

static ClassPtr	instructions_section_class ()

static ClassPtr	instructions_table_class ()

static ClassPtr	object_pool_class ()

static ClassPtr	pc_descriptors_class ()

static ClassPtr	code_source_map_class ()

static ClassPtr	compressed_stackmaps_class ()

static ClassPtr	var_descriptors_class ()

static ClassPtr	exception_handlers_class ()

static ClassPtr	context_class ()

static ClassPtr	context_scope_class ()

static ClassPtr	sentinel_class ()

static ClassPtr	api_error_class ()

static ClassPtr	language_error_class ()

static ClassPtr	unhandled_exception_class ()

static ClassPtr	unwind_error_class ()

static ClassPtr	singletargetcache_class ()

static ClassPtr	unlinkedcall_class ()

static ClassPtr	monomorphicsmiablecall_class ()

static ClassPtr	icdata_class ()

static ClassPtr	megamorphic_cache_class ()

static ClassPtr	subtypetestcache_class ()

static ClassPtr	loadingunit_class ()

static ClassPtr	weak_serialization_reference_class ()

static ClassPtr	weak_array_class ()

static void	InitNullAndBool (IsolateGroup *isolate_group)

static void	Init (IsolateGroup *isolate_group)

static void	InitVtables ()

static void	FinishInit (IsolateGroup *isolate_group)

static void	FinalizeVMIsolate (IsolateGroup *isolate_group)

static void	FinalizeReadOnlyObject (ObjectPtr object)

static void	Cleanup ()

static ErrorPtr	Init (IsolateGroup isolate_group, const uint8_t kernel_buffer, intptr_t kernel_buffer_size)

static void	MakeUnusedSpaceTraversable (const Object &obj, intptr_t original_size, intptr_t used_size)

static intptr_t	InstanceSize ()

template<class FakeObject >
static void	VerifyBuiltinVtable (intptr_t cid)

static void	VerifyBuiltinVtables ()

static bool	ShouldHaveImmutabilityBitSet (classid_t class_id)

Static Public Attributes
static constexpr intptr_t	kBytesPerElement = 1

static constexpr intptr_t	kMaxElements = kMaxInt32 / kBytesPerElement

Static Public Attributes inherited from dart::Object
static constexpr intptr_t	kHashBits = 30

static const ClassId	kClassId = kObjectCid

Friends
class	Class

class	Object

Additional Inherited Members
Public Types inherited from dart::Object
enum	NameVisibility { kInternalName = 0 , kScrubbedName , kUserVisibleName }

enum class	NameDisambiguation { kYes , kNo }

using	UntaggedObjectType = UntaggedObject

using	ObjectPtrType = ObjectPtr

Protected Member Functions inherited from dart::Object
	Object ()

uword	raw_value () const

void	setPtr (ObjectPtr value, intptr_t default_cid)

void	CheckHandle () const

cpp_vtable	vtable () const

void	set_vtable (cpp_vtable value)

bool	Contains (uword addr) const

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

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

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

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

void	StoreSmi (SmiPtr const *addr, SmiPtr value) const

template<typename FieldType >
void	StoreSimd128 (const FieldType *addr, simd128_value_t value) const

template<typename FieldType >
FieldType	LoadNonPointer (const FieldType *addr) const

template<typename FieldType , std::memory_order order>
FieldType	LoadNonPointer (const FieldType *addr) const

template<typename FieldType , typename ValueType >
void	StoreNonPointer (const FieldType *addr, ValueType value) const

template<typename FieldType , typename ValueType , std::memory_order order>
void	StoreNonPointer (const FieldType *addr, ValueType value) const

template<typename FieldType >
FieldType *	UnsafeMutableNonPointer (const FieldType *addr) const

	CLASS_LIST (STORE_NON_POINTER_ILLEGAL_TYPE)

void	UnimplementedMethod () const

void	AddCommonObjectProperties (JSONObject jsobj, const char protocol_type, bool ref) const

Static Protected Member Functions inherited from dart::Object
static DART_NOINLINE Object &	HandleImpl (Zone *zone, ObjectPtr ptr, intptr_t default_cid)

static DART_NOINLINE Object &	ZoneHandleImpl (Zone *zone, ObjectPtr ptr, intptr_t default_cid)

static DART_NOINLINE Object *	ReadOnlyHandleImpl (intptr_t cid)

static ObjectPtr	Allocate (intptr_t cls_id, intptr_t size, Heap::Space space, bool compressed, uword ptr_field_start_offset, uword ptr_field_end_offset)

template<typename T >
static DART_FORCE_INLINE T::ObjectPtrType	Allocate (Heap::Space space)

template<typename T >
static DART_FORCE_INLINE T::ObjectPtrType	Allocate (Heap::Space space, intptr_t elements)

template<typename T >
static DART_FORCE_INLINE T::ObjectPtrType	AllocateVariant (intptr_t class_id, Heap::Space space)

template<typename T >
static DART_FORCE_INLINE T::ObjectPtrType	AllocateVariant (intptr_t class_id, Heap::Space space, intptr_t elements)

static constexpr intptr_t	RoundedAllocationSize (intptr_t size)

static ObjectPtr	Clone (const Object &orig, Heap::Space space, bool load_with_relaxed_atomics=false)

template<typename T >
static DART_FORCE_INLINE uword	from_offset ()

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

Protected Attributes inherited from dart::Object
ObjectPtr	ptr_

Detailed Description

Definition at line 6050 of file object.h.

Member Function Documentation

◆ Equals()

bool dart::PcDescriptors::Equals ( const PcDescriptors & other ) const

inline

Definition at line 6167 of file object.h.

                                                {
    if (Length() != other.Length()) {
      return false;
    }
    NoSafepointScope no_safepoint;
    return memcmp(untag()->data(), other.untag()->data(), Length()) == 0;
  }

◆ HeaderSize()

static intptr_t dart::PcDescriptors::HeaderSize ( )

inlinestatic

Definition at line 6055 of file object.h.

6055{ return sizeof(UntaggedPcDescriptors); }

◆ InstanceSize() [1/2]

static intptr_t dart::PcDescriptors::InstanceSize ( )

inlinestatic

Definition at line 6060 of file object.h.

                                 {
    ASSERT_EQUAL(sizeof(UntaggedPcDescriptors),
                 OFFSET_OF_RETURNED_VALUE(UntaggedPcDescriptors, data));
    return 0;
  }

◆ InstanceSize() [2/2]

static intptr_t dart::PcDescriptors::InstanceSize ( intptr_t len )

inlinestatic

Definition at line 6065 of file object.h.

                                             {
    ASSERT(0 <= len && len <= kMaxElements);
    return RoundedAllocationSize(UnroundedSize(len));
  }

◆ Length()

intptr_t dart::PcDescriptors::Length ( ) const

Definition at line 15826 of file object.cc.

                                     {
  return untag()->length_;
}

◆ New()

PcDescriptorsPtr dart::PcDescriptors::New	(	const void *	delta_encoded_data,
		intptr_t	size
	)

static

Definition at line 15841 of file object.cc.

                                                   {
  ASSERT(Object::pc_descriptors_class() != Class::null());
  Thread* thread = Thread::Current();
  PcDescriptors& result = PcDescriptors::Handle(thread->zone());
  {
    auto raw = Object::Allocate<PcDescriptors>(Heap::kOld, size);
    NoSafepointScope no_safepoint;
    result = raw;
    result.SetLength(size);
  }
  result.CopyData(delta_encoded_data, size);
  return result.ptr();
}

◆ PrintHeaderString()

static void dart::PcDescriptors::PrintHeaderString ( )

static

◆ PrintToJSONObject()

void dart::PcDescriptors::PrintToJSONObject	(	JSONObject *	jsobj,
		bool	ref
	)		const

Definition at line 848 of file object_service.cc.

                                                                       {
  AddCommonObjectProperties(jsobj, "Object", ref);
  // TODO(johnmccutchan): Generate a stable id. PcDescriptors hang off a Code
  // object but do not have a back reference to generate an ID.
  jsobj->AddServiceId(*this);
  if (ref) {
    return;
  }
  JSONArray members(jsobj, "members");
  Iterator iter(*this, UntaggedPcDescriptors::kAnyKind);
  while (iter.MoveNext()) {
    JSONObject descriptor(&members);
    descriptor.AddPropertyF("pcOffset", "%" Px "", iter.PcOffset());
    descriptor.AddProperty("kind", KindAsStr(iter.Kind()));
    descriptor.AddProperty("deoptId", iter.DeoptId());
    // TODO(turnidge): Use AddLocation instead.
    descriptor.AddProperty("tokenPos", iter.TokenPos());
    descriptor.AddProperty("tryIndex", iter.TryIndex());
  }
}

◆ UnroundedSize() [1/2]

static intptr_t dart::PcDescriptors::UnroundedSize ( intptr_t len )

inlinestatic

Definition at line 6059 of file object.h.

6059{ return HeaderSize() + len; }

dart::PcDescriptors::HeaderSize

static intptr_t HeaderSize()

Definition object.h:6055

gn.find_headers.len

len

Definition find_headers.py:30

◆ UnroundedSize() [2/2]

static intptr_t dart::PcDescriptors::UnroundedSize ( PcDescriptorsPtr desc )

inlinestatic

Definition at line 6056 of file object.h.

                                                       {
    return UnroundedSize(desc->untag()->length_);
  }

◆ Verify()

void dart::PcDescriptors::Verify ( const Function & function ) const

Definition at line 15927 of file object.cc.

                                                         {
#if defined(DEBUG)
  // Only check ids for unoptimized code that is optimizable.
  if (!function.IsOptimizable()) {
    return;
  }
  intptr_t max_deopt_id = 0;
  Iterator max_iter(
      *this, UntaggedPcDescriptors::kDeopt | UntaggedPcDescriptors::kIcCall);
  while (max_iter.MoveNext()) {
    if (max_iter.DeoptId() > max_deopt_id) {
      max_deopt_id = max_iter.DeoptId();
    }
  }
 
  Zone* zone = Thread::Current()->zone();
  BitVector* deopt_ids = new (zone) BitVector(zone, max_deopt_id + 1);
  BitVector* iccall_ids = new (zone) BitVector(zone, max_deopt_id + 1);
  Iterator iter(*this,
                UntaggedPcDescriptors::kDeopt | UntaggedPcDescriptors::kIcCall);
  while (iter.MoveNext()) {
    // 'deopt_id' is set for kDeopt and kIcCall and must be unique for one kind.
    if (DeoptId::IsDeoptAfter(iter.DeoptId())) {
      // TODO(vegorov): some instructions contain multiple calls and have
      // multiple "after" targets recorded. Right now it is benign but might
      // lead to issues in the future. Fix that and enable verification.
      continue;
    }
    if (iter.Kind() == UntaggedPcDescriptors::kDeopt) {
      ASSERT(!deopt_ids->Contains(iter.DeoptId()));
      deopt_ids->Add(iter.DeoptId());
    } else {
      ASSERT(!iccall_ids->Contains(iter.DeoptId()));
      iccall_ids->Add(iter.DeoptId());
    }
  }
#endif  // DEBUG
}

◆ WriteToBuffer()

void dart::PcDescriptors::WriteToBuffer	(	BaseTextBuffer *	buffer,
		uword	base
	)		const

Definition at line 15895 of file object.cc.

                                                                          {
  // 4 bits per hex digit.
  const int addr_width = kBitsPerWord / 4;
  // "*" in a printf format specifier tells it to read the field width from
  // the printf argument list.
  buffer->Printf(
      "%-*s  kind           deopt-id  tok-ix        try-ix yield-idx\n",
      addr_width, "pc");
  Iterator iter(*this, UntaggedPcDescriptors::kAnyKind);
  while (iter.MoveNext()) {
    buffer->Printf("%#-*" Px "  %-13s  % 8" Pd "  %-10s  % 8" Pd "  % 8" Pd
                   "\n",
                   addr_width, base + iter.PcOffset(), KindAsStr(iter.Kind()),
                   iter.DeoptId(), iter.TokenPos().ToCString(), iter.TryIndex(),
                   iter.YieldIndex());
  }
}

Friends And Related Symbol Documentation

◆ Class

friend class Class

friend

Definition at line 6188 of file object.h.

◆ Object

friend class Object

friend

Definition at line 6189 of file object.h.

Member Data Documentation

◆ kBytesPerElement

constexpr intptr_t dart::PcDescriptors::kBytesPerElement = 1

staticconstexpr

Definition at line 6052 of file object.h.

◆ kMaxElements

constexpr intptr_t dart::PcDescriptors::kMaxElements = kMaxInt32 / kBytesPerElement

staticconstexpr

Definition at line 6053 of file object.h.

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

third_party/dart-lang/sdk/runtime/vm/object.h
third_party/dart-lang/sdk/runtime/vm/object.cc
third_party/dart-lang/sdk/runtime/vm/object_service.cc

Classes

Public Member Functions

Static Public Member Functions

Static Public Attributes

Friends

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ Equals()

◆ HeaderSize()

◆ InstanceSize() [1/2]

◆ InstanceSize() [2/2]

◆ Length()

◆ New()

◆ PrintHeaderString()

◆ PrintToJSONObject()

◆ UnroundedSize() [1/2]

◆ UnroundedSize() [2/2]

◆ Verify()

◆ WriteToBuffer()

Friends And Related Symbol Documentation

◆ Class

◆ Object

Member Data Documentation

◆ kBytesPerElement

◆ kMaxElements