v8::internal::MaterializedObjectStore Class Reference

#include <deoptimizer.h>

Collaboration diagram for v8::internal::MaterializedObjectStore:

Public Member Functions
	MaterializedObjectStore (Isolate *isolate)
Handle< FixedArray >	Get (Address fp)
void	Set (Address fp, Handle< FixedArray > materialized_objects)
void	Remove (Address fp)

Private Member Functions
Isolate *	isolate ()
Handle< FixedArray >	GetStackEntries ()
Handle< FixedArray >	EnsureStackEntries (int size)
int	StackIdToIndex (Address fp)

Private Attributes
Isolate *	isolate_
List< Address >	frame_fps_

Detailed Description

Definition at line 889 of file deoptimizer.h.

Constructor & Destructor Documentation

MaterializedObjectStore()

v8::internal::MaterializedObjectStore::MaterializedObjectStore ( Isolate *  isolate )

inlineexplicit

Definition at line 891 of file deoptimizer.h.

                                                     : isolate_(isolate) {
  }

Member Function Documentation

EnsureStackEntries()

Handle< FixedArray > v8::internal::MaterializedObjectStore::EnsureStackEntries ( int  size )

private

Definition at line 3568 of file deoptimizer.cc.

                                                                         {
  Handle<FixedArray> array = GetStackEntries();
  if (array->length() >= length) {
    return array;
  }
 
  int new_length = length > 10 ? length : 10;
  if (new_length < 2 * array->length()) {
    new_length = 2 * array->length();
  }
 
  Handle<FixedArray> new_array =
      isolate()->factory()->NewFixedArray(new_length, TENURED);
  for (int i = 0; i < array->length(); i++) {
    new_array->set(i, array->get(i));
  }
  for (int i = array->length(); i < length; i++) {
    new_array->set(i, isolate()->heap()->undefined_value());
  }
  isolate()->heap()->public_set_materialized_objects(*new_array);
  return new_array;
}

References v8::internal::Isolate::factory(), GetStackEntries(), v8::internal::Isolate::heap(), isolate(), v8::internal::Heap::public_set_materialized_objects(), and v8::internal::TENURED.

Referenced by Set().

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Get()

Handle< FixedArray > v8::internal::MaterializedObjectStore::Get

(

Address

fp

)

Definition at line 3514 of file deoptimizer.cc.

                                                          {
  int index = StackIdToIndex(fp);
  if (index == -1) {
    return Handle<FixedArray>::null();
  }
  Handle<FixedArray> array = GetStackEntries();
  CHECK_GT(array->length(), index);
  return Handle<FixedArray>::cast(Handle<Object>(array->get(index),
                                                 isolate()));
}

References v8::internal::Handle< T >::cast(), CHECK_GT, v8::internal::fp, GetStackEntries(), isolate(), v8::internal::Handle< T >::null(), and StackIdToIndex().

Referenced by v8::internal::Deoptimizer::MaterializeHeapObjects().

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GetStackEntries()

Handle< FixedArray > v8::internal::MaterializedObjectStore::GetStackEntries ( )

private

Definition at line 3563 of file deoptimizer.cc.

                                                            {
  return Handle<FixedArray>(isolate()->heap()->materialized_objects());
}

References isolate().

Referenced by EnsureStackEntries(), Get(), and Remove().

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isolate()

Isolate* v8::internal::MaterializedObjectStore::isolate ( )

inlineprivate

Definition at line 899 of file deoptimizer.h.

{ return isolate_; }

References isolate_.

Referenced by EnsureStackEntries(), Get(), GetStackEntries(), and Remove().

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Remove()

void v8::internal::MaterializedObjectStore::Remove

(

Address

fp

)

Definition at line 3539 of file deoptimizer.cc.

                                               {
  int index = StackIdToIndex(fp);
  CHECK_GE(index, 0);
 
  frame_fps_.Remove(index);
  Handle<FixedArray> array = GetStackEntries();
  CHECK_LT(index, array->length());
  for (int i = index; i < frame_fps_.length(); i++) {
    array->set(i, array->get(i + 1));
  }
  array->set(frame_fps_.length(), isolate()->heap()->undefined_value());
}

References CHECK_GE, CHECK_LT, v8::internal::fp, frame_fps_, GetStackEntries(), isolate(), v8::internal::List< T, AllocationPolicy >::Remove(), and StackIdToIndex().

Referenced by v8::internal::Deoptimizer::MaterializeHeapObjects().

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Set()

void v8::internal::MaterializedObjectStore::Set	(	Address	fp,
		Handle< FixedArray >	materialized_objects
	)

Definition at line 3526 of file deoptimizer.cc.

                                             {
  int index = StackIdToIndex(fp);
  if (index == -1) {
    index = frame_fps_.length();
    frame_fps_.Add(fp);
  }
 
  Handle<FixedArray> array = EnsureStackEntries(index + 1);
  array->set(index, *materialized_objects);
}

References v8::internal::List< T, AllocationPolicy >::Add(), EnsureStackEntries(), v8::internal::fp, frame_fps_, and StackIdToIndex().

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StackIdToIndex()

int v8::internal::MaterializedObjectStore::StackIdToIndex ( Address  fp )

private

Definition at line 3553 of file deoptimizer.cc.

                                                      {
  for (int i = 0; i < frame_fps_.length(); i++) {
    if (frame_fps_[i] == fp) {
      return i;
    }
  }
  return -1;
}

References v8::internal::fp, and frame_fps_.

Referenced by Get(), Remove(), and Set().

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Member Data Documentation

frame_fps_

List<Address> v8::internal::MaterializedObjectStore::frame_fps_

private

Definition at line 906 of file deoptimizer.h.

Referenced by Remove(), Set(), and StackIdToIndex().

isolate_

Isolate* v8::internal::MaterializedObjectStore::isolate_

private

Definition at line 905 of file deoptimizer.h.

Referenced by isolate().

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

• /mnt/V8SourceCode/src/deoptimizer.h
• /mnt/V8SourceCode/src/deoptimizer.cc