dart::StackZone Class Reference

#include <zone.h>

Inheritance diagram for dart::StackZone:

Public Member Functions
	StackZone (ThreadState *thread)
virtual	~StackZone ()
uintptr_t	SizeInBytes () const
intptr_t	CapacityInBytes () const
Zone *	GetZone ()
Public Member Functions inherited from dart::StackResource
	StackResource (ThreadState *thread)
virtual	~StackResource ()
ThreadState *	thread () const

Friends
template<typename T >
class	GrowableArray
template<typename T >
class	ZoneGrowableArray

Additional Inherited Members
Static Public Member Functions inherited from dart::StackResource
static void	Unwind (ThreadState *thread)
static void	UnwindAbove (ThreadState *thread, StackResource *new_top)

Detailed Description

Definition at line 187 of file zone.h.

Constructor & Destructor Documentation

StackZone()

dart::StackZone::StackZone ( ThreadState *  thread )

explicit

Definition at line 325 of file zone.cc.

    : StackResource(thread), zone_(new Zone()) {
#else
    : StackResource(thread), zone_() {
#endif  // defined(DART_USE_ABSL)
  if (FLAG_trace_zones) {
    OS::PrintErr("*** Starting a new Stack zone 0x%" Px "(0x%" Px ")\n",
                 reinterpret_cast<intptr_t>(this),
                 reinterpret_cast<intptr_t>(GetZone()));
  }
 
  // This thread must be preventing safepoints or the GC could be visiting the
  // chain of handle blocks we're about the mutate.
  ASSERT(Thread::Current()->MayAllocateHandles());
 
  Zone* lzone = GetZone();
  lzone->Link(thread->zone());
  thread->set_zone(lzone);
}

~StackZone()

dart::StackZone::~StackZone ( )

virtual

Definition at line 347 of file zone.cc.

                      {
  // This thread must be preventing safepoints or the GC could be visiting the
  // chain of handle blocks we're about the mutate.
  ASSERT(Thread::Current()->MayAllocateHandles());
 
  Zone* lzone = GetZone();
  ASSERT(thread()->zone() == lzone);
  thread()->set_zone(lzone->previous_);
  if (FLAG_trace_zones) {
    OS::PrintErr("*** Deleting Stack zone 0x%" Px "(0x%" Px ")\n",
                 reinterpret_cast<intptr_t>(this),
                 reinterpret_cast<intptr_t>(lzone));
  }
 
#if defined(DART_USE_ABSL)
  // DART_USE_ABSL encodes the use of fibers in the Dart VM for threading.
  delete zone_;
#endif  // defined(DART_USE_ABSL)
}

Member Function Documentation

CapacityInBytes()

intptr_t dart::StackZone::CapacityInBytes ( ) const

inline

Definition at line 211 of file zone.h.

{ return zone_.CapacityInBytes(); }

GetZone()

Zone * dart::StackZone::GetZone ( )

inline

Definition at line 213 of file zone.h.

{ return &zone_; }

SizeInBytes()

uintptr_t dart::StackZone::SizeInBytes ( ) const

inline

Definition at line 208 of file zone.h.

{ return zone_.SizeInBytes(); }

Friends And Related Symbol Documentation

GrowableArray

template<typename T >

friend class GrowableArray

friend

Definition at line 229 of file zone.h.

ZoneGrowableArray

template<typename T >

friend class ZoneGrowableArray

friend

Definition at line 231 of file zone.h.

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

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