dart::StoreBuffer Class Reference

#include <pointer_block.h>

Inheritance diagram for dart::StoreBuffer:

Public Types
enum	ThresholdPolicy { kCheckThreshold , kIgnoreThreshold }
Public Types inherited from dart::BlockStack< kStoreBufferBlockSize >
typedef PointerBlock< BlockSize >	Block

Public Member Functions
void	PushBlock (Block *block, ThresholdPolicy policy)
bool	Overflowed ()
intptr_t	Size ()
Public Member Functions inherited from dart::BlockStack< kStoreBufferBlockSize >
	BlockStack ()
	~BlockStack ()
Block *	PopNonFullBlock ()
Block *	PopEmptyBlock ()
Block *	PopNonEmptyBlock ()
Block *	PopAll ()
void	PushAll (Block *blocks)
void	Reset ()
bool	IsEmpty ()
Block *	WaitForWork (RelaxedAtomic< uintptr_t > *num_busy, bool abort)
void	VisitObjectPointers (ObjectPointerVisitor *visitor)

Static Public Attributes
static constexpr intptr_t	kMaxNonEmpty = 100

Additional Inherited Members
Static Public Member Functions inherited from dart::BlockStack< kStoreBufferBlockSize >
static void	Init ()
static void	Cleanup ()
Protected Member Functions inherited from dart::BlockStack< kStoreBufferBlockSize >
bool	IsEmptyLocked ()
void	PushBlockImpl (Block *block)
Static Protected Member Functions inherited from dart::BlockStack< kStoreBufferBlockSize >
static void	TrimGlobalEmpty ()
Protected Attributes inherited from dart::BlockStack< kStoreBufferBlockSize >
List	full_
List	partial_
Monitor	monitor_
Static Protected Attributes inherited from dart::BlockStack< kStoreBufferBlockSize >
static constexpr intptr_t	kMaxGlobalEmpty
static List *	global_empty_
static Mutex *	global_mutex_

Detailed Description

Definition at line 264 of file pointer_block.h.

Member Enumeration Documentation

ThresholdPolicy

enum dart::StoreBuffer::ThresholdPolicy

Enumerator
kCheckThreshold
kIgnoreThreshold

Definition at line 269 of file pointer_block.h.

{ kCheckThreshold, kIgnoreThreshold };

Member Function Documentation

Overflowed()

bool dart::StoreBuffer::Overflowed

(

)

Definition at line 240 of file pointer_block.cc.

                             {
  MonitorLocker ml(&monitor_);
  return (full_.length() + partial_.length()) > kMaxNonEmpty;
}

PushBlock()

void dart::StoreBuffer::PushBlock	(	Block *	block,
		ThresholdPolicy	policy
	)

Definition at line 147 of file pointer_block.cc.

                                                                {
  BlockStack<Block::kSize>::PushBlockImpl(block);
  if ((policy == kCheckThreshold) && Overflowed()) {
    MonitorLocker ml(&monitor_);
    Thread* thread = Thread::Current();
    // Sanity check: it makes no sense to schedule the GC in another isolate
    // group.
    // (If Isolate ever gets multiple store buffers, we should avoid this
    // coupling by passing in an explicit callback+parameter at construction.)
    ASSERT(thread->isolate_group()->store_buffer() == this);
    thread->ScheduleInterrupts(Thread::kVMInterrupt);
  }
}

Size()

intptr_t dart::StoreBuffer::Size

(

)

Definition at line 245 of file pointer_block.cc.

                           {
  ASSERT(Thread::Current()->OwnsGCSafepoint());  // No lock needed.
  return full_.length() + partial_.length();
}

Member Data Documentation

kMaxNonEmpty

constexpr intptr_t dart::StoreBuffer::kMaxNonEmpty = 100

staticconstexpr

Definition at line 267 of file pointer_block.h.

---

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

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