Move runtime helper for JSArrayBuffer onto objects.

src/objects.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/objects.h"
 
 #include <iomanip>
 #include <sstream>
 
 #include "src/accessors.h"
@@ skipping 15574 matching lines @@
 
 void JSArrayBuffer::Neuter() {
   CHECK(is_neuterable());
   CHECK(is_external());
   set_backing_store(NULL);
   set_byte_length(Smi::FromInt(0));
   set_was_neutered(true);
 }
 
 
+void JSArrayBuffer::Setup(Handle<JSArrayBuffer> array_buffer, Isolate* isolate,
+                          bool is_external, void* data, size_t allocated_length,
+                          SharedFlag shared) {
+  DCHECK(array_buffer->GetInternalFieldCount() ==
+         v8::ArrayBuffer::kInternalFieldCount);
+  for (int i = 0; i < v8::ArrayBuffer::kInternalFieldCount; i++) {
+    array_buffer->SetInternalField(i, Smi::FromInt(0));
+  }
+  array_buffer->set_backing_store(data);
+  array_buffer->set_bit_field(0);
+  array_buffer->set_is_external(is_external);
+  array_buffer->set_is_neuterable(shared == SharedFlag::kNotShared);
+  array_buffer->set_is_shared(shared == SharedFlag::kShared);
+
+  if (data && !is_external) {
+    isolate->heap()->RegisterNewArrayBuffer(
+        isolate->heap()->InNewSpace(*array_buffer), data, allocated_length);
+  }
+
+  Handle<Object> byte_length =
+      isolate->factory()->NewNumberFromSize(allocated_length);
+  CHECK(byte_length->IsSmi() || byte_length->IsHeapNumber());
+  array_buffer->set_byte_length(*byte_length);
+}
+
+
+bool JSArrayBuffer::SetupAllocatingData(Handle<JSArrayBuffer> array_buffer,
+                                        Isolate* isolate,
+                                        size_t allocated_length,
+                                        bool initialize, SharedFlag shared) {
+  void* data;
+  CHECK(isolate->array_buffer_allocator() != NULL);
+  // Prevent creating array buffers when serializing.
+  DCHECK(!isolate->serializer_enabled());
+  if (allocated_length != 0) {
+    if (initialize) {
+      data = isolate->array_buffer_allocator()->Allocate(allocated_length);
+    } else {
+      data = isolate->array_buffer_allocator()->AllocateUninitialized(
+          allocated_length);
+    }
+    if (data == NULL) return false;
+  } else {
+    data = NULL;
+  }
+
+  JSArrayBuffer::Setup(array_buffer, isolate, false, data, allocated_length,
+                       shared);
+  return true;
+}
+
+
 Handle<JSArrayBuffer> JSTypedArray::MaterializeArrayBuffer(
     Handle<JSTypedArray> typed_array) {
 
   Handle<Map> map(typed_array->map());
   Isolate* isolate = typed_array->GetIsolate();
 
   DCHECK(IsFixedTypedArrayElementsKind(map->elements_kind()));
 
   Handle<FixedTypedArrayBase> fixed_typed_array(
       FixedTypedArrayBase::cast(typed_array->elements()));
@@ skipping 166 matching lines @@
   if (cell->value() != *new_value) {
     cell->set_value(*new_value);
     Isolate* isolate = cell->GetIsolate();
     cell->dependent_code()->DeoptimizeDependentCodeGroup(
         isolate, DependentCode::kPropertyCellChangedGroup);
   }
 }
 
 }  // namespace internal
 }  // namespace v8