dart::VMHandles Class Reference

#include <handles.h>

Inheritance diagram for dart::VMHandles:

Public Member Functions
	VMHandles ()
	~VMHandles ()
void	VisitObjectPointers (ObjectPointerVisitor *visitor)
Public Member Functions inherited from dart::Handles< kVMHandleSizeInWords, kVMHandlesPerChunk, kOffsetOfRawPtr >
	Handles ()
	~Handles ()
void	VisitObjectPointers (ObjectPointerVisitor *visitor)
void	VisitScopedHandles (ObjectPointerVisitor *visitor)
void	VisitUnvisitedScopedHandles (ObjectPointerVisitor *visitor)
void	Visit (HandleVisitor *visitor)
void	Reset ()
uword	AllocateScopedHandle ()
bool	IsEmpty () const
intptr_t	ZoneHandlesCapacityInBytes () const
intptr_t	ScopedHandlesCapacityInBytes () const

Static Public Member Functions
static uword	AllocateHandle (Zone *zone)
static uword	AllocateZoneHandle (Zone *zone)
static int	ScopedHandleCount ()
static int	ZoneHandleCount ()
Static Public Member Functions inherited from dart::Handles< kVMHandleSizeInWords, kVMHandlesPerChunk, kOffsetOfRawPtr >
static uword	AllocateHandle (Zone *zone)
static uword	AllocateZoneHandle (Zone *zone)

Static Public Attributes
static constexpr int	kOffsetOfRawPtrInHandle = kOffsetOfRawPtr

Friends
class	ApiZone
class	ApiNativeScope

Additional Inherited Members
Protected Member Functions inherited from dart::Handles< kVMHandleSizeInWords, kVMHandlesPerChunk, kOffsetOfRawPtr >
int	CountScopedHandles () const
int	CountZoneHandles () const
bool	IsValidScopedHandle (uword handle) const
bool	IsValidZoneHandle (uword handle) const

Detailed Description

Definition at line 242 of file handles.h.

Constructor & Destructor Documentation

VMHandles()

dart::VMHandles::VMHandles ( )

inline

Definition at line 248 of file handles.h.

      : Handles<kVMHandleSizeInWords, kVMHandlesPerChunk, kOffsetOfRawPtr>() {
#if defined(DEBUG)
    if (FLAG_trace_handles) {
      OS::PrintErr("*** Starting a new VM handle block 0x%" Px "\n",
                   reinterpret_cast<intptr_t>(this));
    }
#endif
  }

~VMHandles()

dart::VMHandles::~VMHandles ( )

inline

Definition at line 257 of file handles.h.

               {
#if defined(DEBUG)
    if (FLAG_trace_handles) {
      OS::PrintErr("***   Handle Counts for 0x(%" Px
                   "):Zone = %d,Scoped = %d\n",
                   reinterpret_cast<intptr_t>(this), CountZoneHandles(),
                   CountScopedHandles());
      OS::PrintErr("*** Deleting VM handle block 0x%" Px "\n",
                   reinterpret_cast<intptr_t>(this));
    }
#endif
  }

Member Function Documentation

AllocateHandle()

uword dart::VMHandles::AllocateHandle ( Zone *  zone )

static

Definition at line 32 of file handles.cc.

                                          {
  DEBUG_ASSERT(!IsCurrentApiNativeScope(zone));
  uword handle = Handles<kVMHandleSizeInWords, kVMHandlesPerChunk,
                         kOffsetOfRawPtr>::AllocateHandle(zone);
#if defined(DEBUG)
  *reinterpret_cast<uword*>(handle + kOffsetOfIsZoneHandle * kWordSize) = 0;
#endif
  return handle;
}

AllocateZoneHandle()

uword dart::VMHandles::AllocateZoneHandle ( Zone *  zone )

static

Definition at line 42 of file handles.cc.

                                              {
  DEBUG_ASSERT(!IsCurrentApiNativeScope(zone));
  uword handle = Handles<kVMHandleSizeInWords, kVMHandlesPerChunk,
                         kOffsetOfRawPtr>::AllocateZoneHandle(zone);
#if defined(DEBUG)
  *reinterpret_cast<uword*>(handle + kOffsetOfIsZoneHandle * kWordSize) = 1;
#endif
  return handle;
}

ScopedHandleCount()

int dart::VMHandles::ScopedHandleCount ( )

static

Definition at line 59 of file handles.cc.

                                 {
  Thread* thread = Thread::Current();
  ASSERT(thread->zone() != nullptr);
  VMHandles* handles = thread->zone()->handles();
  return handles->CountScopedHandles();
}

VisitObjectPointers()

void dart::VMHandles::VisitObjectPointers

(

ObjectPointerVisitor *

visitor

)

Definition at line 20 of file handles.cc.

                                                                 {
  return Handles<kVMHandleSizeInWords, kVMHandlesPerChunk,
                 kOffsetOfRawPtr>::VisitObjectPointers(visitor);
}

ZoneHandleCount()

int dart::VMHandles::ZoneHandleCount ( )

static

Definition at line 66 of file handles.cc.

                               {
  Thread* thread = Thread::Current();
  ASSERT(thread->zone() != nullptr);
  VMHandles* handles = thread->zone()->handles();
  return handles->CountZoneHandles();
}

Friends And Related Symbol Documentation

ApiNativeScope

friend class ApiNativeScope

friend

Definition at line 292 of file handles.h.

ApiZone

friend class ApiZone

friend

Definition at line 291 of file handles.h.

Member Data Documentation

kOffsetOfRawPtrInHandle

constexpr int dart::VMHandles::kOffsetOfRawPtrInHandle = kOffsetOfRawPtr

staticconstexpr

Definition at line 246 of file handles.h.

---

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

• third_party/dart-lang/sdk/runtime/vm/handles.h
• third_party/dart-lang/sdk/runtime/vm/handles.cc