bool DynamicObject::DeoptimizeObjectHeaderInlining()
{
if(!IsObjectHeaderInlinedTypeHandler())
{
return false;
}
if (PHASE_TRACE1(Js::ObjectHeaderInliningPhase))
{
Output::Print(_u("ObjectHeaderInlining: De-optimizing the object.\n"));
Output::Flush();
}
PathTypeHandlerBase *const oldTypeHandler = PathTypeHandlerBase::FromTypeHandler(GetTypeHandler());
SimplePathTypeHandler *const newTypeHandler = oldTypeHandler->DeoptimizeObjectHeaderInlining(GetLibrary());
const PropertyIndex newInlineSlotCapacity = newTypeHandler->GetInlineSlotCapacity();
DynamicTypeHandler::AdjustSlots(
this,
newInlineSlotCapacity,
newTypeHandler->GetSlotCapacity() - newInlineSlotCapacity);
DynamicType *const newType = DuplicateType();
newType->typeHandler = newTypeHandler;
newType->ShareType();
type = newType;
return true;
}
DynamicTypeHandler::DynamicTypeHandler(int slotCapacity, uint16 inlineSlotCapacity, uint16 offsetOfInlineSlots, BYTE flags) :
flags(flags),
propertyTypes(PropertyTypesWritableDataOnly | PropertyTypesReserved),
offsetOfInlineSlots(offsetOfInlineSlots),
unusedBytes(Js::AtomTag)
{
Assert(!GetIsOrMayBecomeShared() || GetIsLocked());
Assert(offsetOfInlineSlots != 0 || inlineSlotCapacity == 0);
Assert(!IsObjectHeaderInlined(offsetOfInlineSlots) || inlineSlotCapacity != 0);
// Align the slot capacities and set the total slot capacity
this->inlineSlotCapacity = inlineSlotCapacity =
IsObjectHeaderInlined(offsetOfInlineSlots)
? RoundUpObjectHeaderInlinedInlineSlotCapacity(inlineSlotCapacity)
: RoundUpInlineSlotCapacity(inlineSlotCapacity);
this->slotCapacity = RoundUpSlotCapacity(slotCapacity, inlineSlotCapacity);
this->isNotPathTypeHandlerOrHasUserDefinedCtor = true;
Assert(IsObjectHeaderInlinedTypeHandler() == IsObjectHeaderInlined(offsetOfInlineSlots));
}