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Use PathTypeHandler's for function objects with non-default properties/attributes #4818

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merged 1 commit into from
Mar 21, 2018
Merged

Use PathTypeHandler's for function objects with non-default properties/attributes #4818

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8 changes: 8 additions & 0 deletions lib/Runtime/Language/CacheOperators.cpp
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Expand Up @@ -234,8 +234,16 @@ namespace Js
DynamicTypeHandler* oldTypeHandler = oldType->GetTypeHandler();
DynamicTypeHandler* newTypeHandler = newType->GetTypeHandler();

#if ENABLE_FIXED_FIELDS
// the newType is a path-type so the old one should be too:
Assert(oldTypeHandler->IsPathTypeHandler());
#else
// This may be the transition from deferred type handler to path type handler. Don't try to cache now.
if (!oldTypeHandler->IsPathTypeHandler())
{
return;
}
#endif

int oldCapacity = oldTypeHandler->GetSlotCapacity();
int newCapacity = newTypeHandler->GetSlotCapacity();
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32 changes: 28 additions & 4 deletions lib/Runtime/Library/JavascriptLibrary.cpp
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Expand Up @@ -32,6 +32,12 @@ namespace Js
SimplePropertyDescriptor(NO_WRITE_BARRIER_TAG(BuiltInPropertyRecords::name), PropertyConfigurable)
};

SimplePropertyDescriptor const JavascriptLibrary::SharedIdMappedFunctionPropertyDescriptors[2] =
{
SimplePropertyDescriptor(NO_WRITE_BARRIER_TAG(BuiltInPropertyRecords::prototype), PropertyNone),
SimplePropertyDescriptor(NO_WRITE_BARRIER_TAG(BuiltInPropertyRecords::name), PropertyConfigurable)
};

SimplePropertyDescriptor const JavascriptLibrary::FunctionWithLengthAndNameTypeDescriptors[2] =
{
SimplePropertyDescriptor(NO_WRITE_BARRIER_TAG(BuiltInPropertyRecords::length), PropertyConfigurable),
Expand All @@ -40,14 +46,15 @@ namespace Js

SimplePropertyDescriptor const JavascriptLibrary::ModuleNamespaceTypeDescriptors[1] =
{
SimplePropertyDescriptor(NO_WRITE_BARRIER_TAG(BuiltInPropertyRecords::_symbolToStringTag), PropertyConfigurable)
SimplePropertyDescriptor(NO_WRITE_BARRIER_TAG(BuiltInPropertyRecords::_symbolToStringTag), PropertyNone)
};

SimpleTypeHandler<1> JavascriptLibrary::SharedPrototypeTypeHandler(NO_WRITE_BARRIER_TAG(BuiltInPropertyRecords::constructor), PropertyWritable | PropertyConfigurable, PropertyTypesWritableDataOnly, 4, sizeof(DynamicObject));
SimpleTypeHandler<1> JavascriptLibrary::SharedFunctionWithoutPrototypeTypeHandler(NO_WRITE_BARRIER_TAG(BuiltInPropertyRecords::name), PropertyConfigurable);
SimpleTypeHandler<1> JavascriptLibrary::SharedFunctionWithPrototypeTypeHandlerV11(NO_WRITE_BARRIER_TAG(BuiltInPropertyRecords::prototype), PropertyWritable);
SimpleTypeHandler<2> JavascriptLibrary::SharedFunctionWithPrototypeTypeHandler(NO_WRITE_BARRIER_TAG(SharedFunctionPropertyDescriptors));
SimpleTypeHandler<1> JavascriptLibrary::SharedIdMappedFunctionWithPrototypeTypeHandler(NO_WRITE_BARRIER_TAG(BuiltInPropertyRecords::prototype));
SimpleTypeHandler<2> JavascriptLibrary::SharedIdMappedFunctionWithPrototypeTypeHandler(NO_WRITE_BARRIER_TAG(SharedIdMappedFunctionPropertyDescriptors));
SimpleTypeHandler<1> JavascriptLibrary::SharedFunctionWithConfigurableLengthTypeHandler(NO_WRITE_BARRIER_TAG(BuiltInPropertyRecords::length), PropertyConfigurable);
SimpleTypeHandler<1> JavascriptLibrary::SharedFunctionWithLengthTypeHandler(NO_WRITE_BARRIER_TAG(BuiltInPropertyRecords::length));
SimpleTypeHandler<2> JavascriptLibrary::SharedFunctionWithLengthAndNameTypeHandler(NO_WRITE_BARRIER_TAG(FunctionWithLengthAndNameTypeDescriptors));
SimpleTypeHandler<1> JavascriptLibrary::SharedNamespaceSymbolTypeHandler(NO_WRITE_BARRIER_TAG(ModuleNamespaceTypeDescriptors));
Expand Down Expand Up @@ -898,6 +905,11 @@ namespace Js
GetDeferredFunctionTypeHandler(), false, false);
}

DynamicType * JavascriptLibrary::CreateFunctionWithConfigurableLengthType(FunctionInfo * functionInfo)
{
return CreateFunctionWithConfigurableLengthType(this->GetFunctionPrototype(), functionInfo);
}

DynamicType * JavascriptLibrary::CreateFunctionWithLengthType(FunctionInfo * functionInfo)
{
return CreateFunctionWithLengthType(this->GetFunctionPrototype(), functionInfo);
Expand All @@ -913,6 +925,14 @@ namespace Js
return CreateFunctionWithLengthAndPrototypeType(this->GetFunctionPrototype(), functionInfo);
}

DynamicType * JavascriptLibrary::CreateFunctionWithConfigurableLengthType(DynamicObject * prototype, FunctionInfo * functionInfo)
{
Assert(!functionInfo->HasBody());
return DynamicType::New(scriptContext, TypeIds_Function, prototype,
this->inProfileMode? ProfileEntryThunk : functionInfo->GetOriginalEntryPoint(),
&SharedFunctionWithConfigurableLengthTypeHandler);
}

DynamicType * JavascriptLibrary::CreateFunctionWithLengthType(DynamicObject * prototype, FunctionInfo * functionInfo)
{
Assert(!functionInfo->HasBody());
Expand Down Expand Up @@ -5034,11 +5054,15 @@ namespace Js
{
function->ReplaceType(crossSiteExternalConstructFunctionWithPrototypeType);
}
else
else if (typeHandler == &SharedIdMappedFunctionWithPrototypeTypeHandler)
{
Assert(typeHandler == &SharedIdMappedFunctionWithPrototypeTypeHandler);
function->ReplaceType(crossSiteIdMappedFunctionWithPrototypeType);
}
else
{
function->ChangeType();
function->SetEntryPoint(scriptContext->CurrentCrossSiteThunk);
}
}
}

Expand Down
6 changes: 5 additions & 1 deletion lib/Runtime/Library/JavascriptLibrary.h
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Expand Up @@ -519,13 +519,15 @@ namespace Js
static SimpleTypeHandler<1> SharedFunctionWithoutPrototypeTypeHandler;
static SimpleTypeHandler<1> SharedFunctionWithPrototypeTypeHandlerV11;
static SimpleTypeHandler<2> SharedFunctionWithPrototypeTypeHandler;
static SimpleTypeHandler<1> SharedFunctionWithConfigurableLengthTypeHandler;
static SimpleTypeHandler<1> SharedFunctionWithLengthTypeHandler;
static SimpleTypeHandler<2> SharedFunctionWithLengthAndNameTypeHandler;
static SimpleTypeHandler<1> SharedIdMappedFunctionWithPrototypeTypeHandler;
static SimpleTypeHandler<2> SharedIdMappedFunctionWithPrototypeTypeHandler;
static SimpleTypeHandler<1> SharedNamespaceSymbolTypeHandler;
static MissingPropertyTypeHandler MissingPropertyHolderTypeHandler;

static SimplePropertyDescriptor const SharedFunctionPropertyDescriptors[2];
static SimplePropertyDescriptor const SharedIdMappedFunctionPropertyDescriptors[2];
static SimplePropertyDescriptor const HeapArgumentsPropertyDescriptors[3];
static SimplePropertyDescriptor const FunctionWithLengthAndPrototypeTypeDescriptors[2];
static SimplePropertyDescriptor const FunctionWithLengthAndNameTypeDescriptors[2];
Expand Down Expand Up @@ -984,9 +986,11 @@ namespace Js
DynamicType * CreateDeferredPrototypeFunctionType(JavascriptMethod entrypoint);
DynamicType * CreateDeferredPrototypeFunctionTypeNoProfileThunk(JavascriptMethod entrypoint, bool isShared = false, bool isLengthAvailable = false);
DynamicType * CreateFunctionType(JavascriptMethod entrypoint, RecyclableObject* prototype = nullptr);
DynamicType * CreateFunctionWithConfigurableLengthType(FunctionInfo * functionInfo);
DynamicType * CreateFunctionWithLengthType(FunctionInfo * functionInfo);
DynamicType * CreateFunctionWithLengthAndNameType(FunctionInfo * functionInfo);
DynamicType * CreateFunctionWithLengthAndPrototypeType(FunctionInfo * functionInfo);
DynamicType * CreateFunctionWithConfigurableLengthType(DynamicObject * prototype, FunctionInfo * functionInfo);
DynamicType * CreateFunctionWithLengthType(DynamicObject * prototype, FunctionInfo * functionInfo);
DynamicType * CreateFunctionWithLengthAndNameType(DynamicObject * prototype, FunctionInfo * functionInfo);
DynamicType * CreateFunctionWithLengthAndPrototypeType(DynamicObject * prototype, FunctionInfo * functionInfo);
Expand Down
2 changes: 1 addition & 1 deletion lib/Runtime/Library/JavascriptProxy.cpp
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Expand Up @@ -130,7 +130,7 @@ namespace Js

JavascriptProxy* proxy = JavascriptProxy::Create(scriptContext, args);
JavascriptLibrary* library = scriptContext->GetLibrary();
DynamicType* type = library->CreateFunctionWithLengthType(&EntryInfo::Revoke);
DynamicType* type = library->CreateFunctionWithConfigurableLengthType(&EntryInfo::Revoke);
RuntimeFunction* revoker = RecyclerNewEnumClass(scriptContext->GetRecycler(),
JavascriptLibrary::EnumFunctionClass, RuntimeFunction,
type, &EntryInfo::Revoke);
Expand Down
14 changes: 14 additions & 0 deletions lib/Runtime/Library/ScriptFunction.cpp
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Expand Up @@ -106,6 +106,13 @@ namespace Js

pfuncScriptWithInlineCache->SetHasSuperReference(hasSuperReference);

ScriptFunctionType *scFuncType = functionProxy->GetUndeferredFunctionType();
if (scFuncType)
{
Assert(pfuncScriptWithInlineCache->GetType() == functionProxy->GetDeferredPrototypeType());
pfuncScriptWithInlineCache->GetTypeHandler()->EnsureObjectReady(pfuncScriptWithInlineCache);
}

if (PHASE_TRACE1(Js::ScriptFunctionWithInlineCachePhase))
{
char16 debugStringBuffer[MAX_FUNCTION_BODY_DEBUG_STRING_SIZE];
Expand All @@ -123,6 +130,13 @@ namespace Js

pfuncScript->SetHasSuperReference(hasSuperReference);

ScriptFunctionType *scFuncType = functionProxy->GetUndeferredFunctionType();
if (scFuncType)
{
Assert(pfuncScript->GetType() == functionProxy->GetDeferredPrototypeType());
pfuncScript->GetTypeHandler()->EnsureObjectReady(pfuncScript);
}

JS_ETW(EventWriteJSCRIPT_RECYCLER_ALLOCATE_FUNCTION(pfuncScript, EtwTrace::GetFunctionId(functionProxy)));

return pfuncScript;
Expand Down
2 changes: 1 addition & 1 deletion lib/Runtime/Runtime.h
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Expand Up @@ -134,7 +134,7 @@ namespace Js
class DeferredTypeHandlerBase;
template <bool IsPrototype> class NullTypeHandler;
template<size_t size> class SimpleTypeHandler;
class PathTypeHandler;
class PathTypeHandlerBase;
class IndexPropertyDescriptor;
class DynamicObject;
class ArrayObject;
Expand Down
42 changes: 35 additions & 7 deletions lib/Runtime/Types/PathTypeHandler.cpp
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Expand Up @@ -130,6 +130,12 @@ namespace Js
#endif
}

void PathTypeSingleSuccessorInfo::ReplaceSuccessor(DynamicType * type, const PathTypeSuccessorKey key, RecyclerWeakReference<DynamicType> * typeWeakRef)
{
Assert(successorKey == key);
successorTypeWeakRef = typeWeakRef;
}

template<class Fn>
void PathTypeSingleSuccessorInfo::MapSingleSuccessor(Fn fn)
{
Expand Down Expand Up @@ -168,6 +174,13 @@ namespace Js
propertySuccessors->Item(key, typeWeakRef);
}

void PathTypeMultiSuccessorInfo::ReplaceSuccessor(DynamicType * type, const PathTypeSuccessorKey key, RecyclerWeakReference<DynamicType> * typeWeakRef)
{
Assert(this->propertySuccessors);
Assert(propertySuccessors->Item(key));
propertySuccessors->Item(key, typeWeakRef);
}

template<class Fn>
void PathTypeMultiSuccessorInfo::MapMultiSuccessors(Fn fn)
{
Expand Down Expand Up @@ -343,9 +356,21 @@ namespace Js
return found;
}

BOOL PathTypeHandlerBase::SetAttributesHelper(DynamicObject* instance, PropertyId propertyId, PropertyIndex propertyIndex, ObjectSlotAttributes * instanceAttributes, ObjectSlotAttributes propertyAttributes)
BOOL PathTypeHandlerBase::SetAttributesHelper(DynamicObject* instance, PropertyId propertyId, PropertyIndex propertyIndex, ObjectSlotAttributes * instanceAttributes, ObjectSlotAttributes propertyAttributes, bool isInit)
{
if (instanceAttributes == nullptr ? propertyAttributes == ObjectSlotAttr_Default : propertyAttributes == instanceAttributes[propertyIndex])
if (instanceAttributes)
{
if (!isInit)
{
// Preserve non-default bits like accessors
propertyAttributes = (ObjectSlotAttributes)(propertyAttributes | (instanceAttributes[propertyIndex] & ~ObjectSlotAttr_PropertyAttributesMask));
}
if (propertyAttributes == instanceAttributes[propertyIndex])
{
return true;
}
}
else if (propertyAttributes == ObjectSlotAttr_Default)
{
return true;
}
Expand Down Expand Up @@ -714,18 +739,16 @@ namespace Js
// In CacheOperators::CachePropertyWrite we ensure that we never cache property adds for types that aren't shared.
Assert(!instance->GetDynamicType()->GetIsShared() || GetIsShared());

Assert(instance->GetDynamicType()->GetIsShared() == GetIsShared());

if (setAttributes)
{
this->SetAttributesHelper(instance, propertyId, index, GetAttributeArray(), attr);
this->SetAttributesHelper(instance, propertyId, index, GetAttributeArray(), attr, isInit);
}
else if (isInit)
{
ObjectSlotAttributes * attributes = this->GetAttributeArray();
if (attributes && (attributes[index] & ObjectSlotAttr_Accessor))
{
this->SetAttributesHelper(instance, propertyId, index, attributes, (ObjectSlotAttributes)(attributes[index] & ~ObjectSlotAttr_Accessor));
this->SetAttributesHelper(instance, propertyId, index, attributes, (ObjectSlotAttributes)(attributes[index] & ~ObjectSlotAttr_Accessor), true);
}
}
PathTypeHandlerBase *newTypeHandler = PathTypeHandlerBase::FromTypeHandler(instance->GetDynamicType()->GetTypeHandler());
Expand Down Expand Up @@ -1722,7 +1745,12 @@ namespace Js
return true;
}

return SetAttributesHelper(instance, propertyId, propertyIndex, GetAttributeArray(), PropertyAttributesToObjectSlotAttributes(attributes));
return SetAttributesAtIndex(instance, propertyId, propertyIndex, attributes);
}

BOOL PathTypeHandlerBase::SetAttributesAtIndex(DynamicObject* instance, PropertyId propertyId, PropertyIndex index, PropertyAttributes attributes)
{
return SetAttributesHelper(instance, propertyId, index, GetAttributeArray(), PropertyAttributesToObjectSlotAttributes(attributes));
}

BOOL PathTypeHandlerBase::GetAttributesWithPropertyIndex(DynamicObject * instance, PropertyId propertyId, BigPropertyIndex index, PropertyAttributes * attributes)
Expand Down
9 changes: 8 additions & 1 deletion lib/Runtime/Types/PathTypeHandler.h
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Expand Up @@ -39,6 +39,7 @@ namespace Js
bool IsMultiSuccessor() const { return !IsSingleSuccessor(); }
virtual bool GetSuccessor(const PathTypeSuccessorKey successorKey, RecyclerWeakReference<DynamicType> ** typeWeakRef) const = 0;
virtual void SetSuccessor(DynamicType * type, const PathTypeSuccessorKey successorKey, RecyclerWeakReference<DynamicType> * typeWeakRef, ScriptContext * scriptContext) = 0;
virtual void ReplaceSuccessor(DynamicType * type, PathTypeSuccessorKey successorKey, RecyclerWeakReference<DynamicType> * typeWeakRef) = 0;

template<class Fn> void MapSuccessors(Fn fn);
template<class Fn> void MapSuccessorsUntil(Fn fn);
Expand All @@ -61,6 +62,7 @@ namespace Js

virtual bool GetSuccessor(const PathTypeSuccessorKey successorKey, RecyclerWeakReference<DynamicType> ** typeWeakRef) const override;
virtual void SetSuccessor(DynamicType * type, const PathTypeSuccessorKey successorKey, RecyclerWeakReference<DynamicType> * typeWeakRef, ScriptContext * scriptContext) override;
virtual void ReplaceSuccessor(DynamicType * type, PathTypeSuccessorKey successorKey, RecyclerWeakReference<DynamicType> * typeWeakRef) override;

template<class Fn> void MapSingleSuccessor(Fn fn);

Expand All @@ -78,6 +80,7 @@ namespace Js

virtual bool GetSuccessor(const PathTypeSuccessorKey successorKey, RecyclerWeakReference<DynamicType> ** typeWeakRef) const override;
virtual void SetSuccessor(DynamicType * type, const PathTypeSuccessorKey successorKey, RecyclerWeakReference<DynamicType> * typeWeakRef, ScriptContext * scriptContext) override;
virtual void ReplaceSuccessor(DynamicType * type, PathTypeSuccessorKey successorKey, RecyclerWeakReference<DynamicType> * typeWeakRef) override;

template<class Fn> void MapMultiSuccessors(Fn fn);
template<class Fn> void MapMultiSuccessorsUntil(Fn fn);
Expand All @@ -89,6 +92,8 @@ namespace Js

class PathTypeHandlerBase : public DynamicTypeHandler
{
template<size_t size>
friend class SimpleTypeHandler;
friend class PathTypeHandlerNoAttr;
friend class PathTypeHandlerWithAttr;
friend class DynamicObject;
Expand All @@ -115,6 +120,7 @@ namespace Js
template<class Fn> void MapSuccessorsUntil(Fn fn);
PathTypeSuccessorInfo * GetSuccessorInfo() const { return successorInfo; }
void SetSuccessorInfo(PathTypeSuccessorInfo * info) { successorInfo = info; }
void ReplaceSuccessor(DynamicType * type, PathTypeSuccessorKey key, RecyclerWeakReference<DynamicType> * typeWeakRef) { return successorInfo->ReplaceSuccessor(type, key, typeWeakRef); }

static PropertyAttributes ObjectSlotAttributesToPropertyAttributes(const ObjectSlotAttributes attr) { return attr & ObjectSlotAttr_PropertyAttributesMask; }
static ObjectSlotAttributes PropertyAttributesToObjectSlotAttributes(const PropertyAttributes attr) { return (ObjectSlotAttributes)(attr & ObjectSlotAttr_PropertyAttributesMask); }
Expand Down Expand Up @@ -182,7 +188,8 @@ namespace Js

BOOL FindNextPropertyHelper(ScriptContext* scriptContext, ObjectSlotAttributes * objectAttributes, PropertyIndex& index, JavascriptString** propertyString,
PropertyId* propertyId, PropertyAttributes* attributes, Type* type, DynamicType *typeToEnumerate, EnumeratorFlags flags, DynamicObject* instance, PropertyValueInfo* info);
BOOL SetAttributesHelper(DynamicObject* instance, PropertyId propertyId, PropertyIndex propertyIndex, ObjectSlotAttributes * instanceAttributes, ObjectSlotAttributes propertyAttributes);
BOOL SetAttributesAtIndex(DynamicObject* instance, PropertyId propertyId, PropertyIndex index, PropertyAttributes attributes);
BOOL SetAttributesHelper(DynamicObject* instance, PropertyId propertyId, PropertyIndex propertyIndex, ObjectSlotAttributes * instanceAttributes, ObjectSlotAttributes propertyAttributes, bool isInit = false);
BOOL SetAccessorsHelper(DynamicObject* instance, PropertyId propertyId, ObjectSlotAttributes * attributes, PathTypeSetterSlotIndex * setters, Var getter, Var setter, PropertyOperationFlags flags);

#if ENABLE_NATIVE_CODEGEN
Expand Down
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