Imported WebKit commit 7e538425aa020340619e927792f3d895061fb54b (http://svn.webkit.org/repository/webkit/trunk@116286)

1 files changed, 36 insertions, 17 deletions

diff --git a/Source/JavaScriptCore/runtime/JSObject.h b/Source/JavaScriptCore/runtime/JSObject.h
index 3f3d281cf..d95860d62 100644
--- a/Source/JavaScriptCore/runtime/JSObject.h
+++ b/Source/JavaScriptCore/runtime/JSObject.h
@@ -212,8 +212,9 @@ namespace JSC {
         bool staticFunctionsReified() { return structure()->staticFunctionsReified(); }
         void reifyStaticFunctionsForDelete(ExecState* exec);
 
-        JS_EXPORT_PRIVATE void allocatePropertyStorage(JSGlobalData&, size_t oldSize, size_t newSize);
+        JS_EXPORT_PRIVATE PropertyStorage growPropertyStorage(JSGlobalData&, size_t oldSize, size_t newSize);
         bool isUsingInlineStorage() const { return static_cast<const void*>(m_propertyStorage.get()) == static_cast<const void*>(this + 1); }
+        void setPropertyStorage(JSGlobalData&, PropertyStorage, Structure*);
 
         void* addressOfPropertyStorage()
         {
@@ -263,6 +264,11 @@ namespace JSC {
         // To instantiate objects you likely want JSFinalObject, below.
         // To create derived types you likely want JSNonFinalObject, below.
         JSObject(JSGlobalData&, Structure*, PropertyStorage inlineStorage);
+        
+        void resetInheritorID()
+        {
+            m_inheritorID.clear();
+        }
 
     private:
         friend class LLIntOffsetsExtractor;
@@ -447,6 +453,14 @@ inline bool JSObject::isGlobalThis() const
     return structure()->typeInfo().type() == GlobalThisType;
 }
 
+inline void JSObject::setPropertyStorage(JSGlobalData& globalData, PropertyStorage storage, Structure* structure)
+{
+    ASSERT(storage);
+    ASSERT(structure);
+    setStructure(globalData, structure);
+    m_propertyStorage.set(globalData, this, storage);
+}
+
 inline JSObject* constructEmptyObject(ExecState* exec, Structure* structure)
 {
     return JSFinalObject::create(exec, structure);
@@ -474,7 +488,7 @@ inline Structure* createEmptyObjectStructure(JSGlobalData& globalData, JSGlobalO
 inline JSObject* asObject(JSCell* cell)
 {
     ASSERT(cell->isObject());
-    return static_cast<JSObject*>(cell);
+    return jsCast<JSObject*>(cell);
 }
 
 inline JSObject* asObject(JSValue value)
@@ -658,10 +672,11 @@ inline bool JSObject::putDirectInternal(JSGlobalData& globalData, const Identifi
         if ((mode == PutModePut) && !isExtensible())
             return false;
 
-        size_t currentCapacity = structure()->propertyStorageCapacity();
+        PropertyStorage newStorage = propertyStorage();
+        if (structure()->shouldGrowPropertyStorage())
+            newStorage = growPropertyStorage(globalData, structure()->propertyStorageCapacity(), structure()->suggestedNewPropertyStorageSize());
         offset = structure()->addPropertyWithoutTransition(globalData, propertyName, attributes, specificFunction);
-        if (currentCapacity != structure()->propertyStorageCapacity())
-            allocatePropertyStorage(globalData, currentCapacity, structure()->propertyStorageCapacity());
+        setPropertyStorage(globalData, newStorage, structure());
 
         ASSERT(offset < structure()->propertyStorageCapacity());
         putDirectOffset(globalData, offset, value);
@@ -673,12 +688,13 @@ inline bool JSObject::putDirectInternal(JSGlobalData& globalData, const Identifi
 
     size_t offset;
     size_t currentCapacity = structure()->propertyStorageCapacity();
-    if (Structure* structure = Structure::addPropertyTransitionToExistingStructure(this->structure(), propertyName, attributes, specificFunction, offset)) {    
+    if (Structure* structure = Structure::addPropertyTransitionToExistingStructure(this->structure(), propertyName, attributes, specificFunction, offset)) {
+        PropertyStorage newStorage = propertyStorage(); 
         if (currentCapacity != structure->propertyStorageCapacity())
-            allocatePropertyStorage(globalData, currentCapacity, structure->propertyStorageCapacity());
+            newStorage = growPropertyStorage(globalData, currentCapacity, structure->propertyStorageCapacity());
 
         ASSERT(offset < structure->propertyStorageCapacity());
-        setStructure(globalData, structure);
+        setPropertyStorage(globalData, newStorage, structure);
         putDirectOffset(globalData, offset, value);
         // This is a new property; transitions with specific values are not currently cachable,
         // so leave the slot in an uncachable state.
@@ -722,13 +738,14 @@ inline bool JSObject::putDirectInternal(JSGlobalData& globalData, const Identifi
     if ((mode == PutModePut) && !isExtensible())
         return false;
 
-    Structure* structure = Structure::addPropertyTransition(globalData, this->structure(), propertyName, attributes, specificFunction, offset);
+    PropertyStorage newStorage = propertyStorage();
+    if (structure()->shouldGrowPropertyStorage())
+        newStorage = growPropertyStorage(globalData, structure()->propertyStorageCapacity(), structure()->suggestedNewPropertyStorageSize());
 
-    if (currentCapacity != structure->propertyStorageCapacity())
-        allocatePropertyStorage(globalData, currentCapacity, structure->propertyStorageCapacity());
+    Structure* structure = Structure::addPropertyTransition(globalData, this->structure(), propertyName, attributes, specificFunction, offset);
 
     ASSERT(offset < structure->propertyStorageCapacity());
-    setStructure(globalData, structure);
+    setPropertyStorage(globalData, newStorage, structure);
     putDirectOffset(globalData, offset, value);
     // This is a new property; transitions with specific values are not currently cachable,
     // so leave the slot in an uncachable state.
@@ -762,18 +779,20 @@ inline void JSObject::putDirect(JSGlobalData& globalData, const Identifier& prop
 inline void JSObject::putDirectWithoutTransition(JSGlobalData& globalData, const Identifier& propertyName, JSValue value, unsigned attributes)
 {
     ASSERT(!value.isGetterSetter() && !(attributes & Accessor));
-    size_t currentCapacity = structure()->propertyStorageCapacity();
+    PropertyStorage newStorage = propertyStorage();
+    if (structure()->shouldGrowPropertyStorage())
+        newStorage = growPropertyStorage(globalData, structure()->propertyStorageCapacity(), structure()->suggestedNewPropertyStorageSize());
     size_t offset = structure()->addPropertyWithoutTransition(globalData, propertyName, attributes, getJSFunction(value));
-    if (currentCapacity != structure()->propertyStorageCapacity())
-        allocatePropertyStorage(globalData, currentCapacity, structure()->propertyStorageCapacity());
+    setPropertyStorage(globalData, newStorage, structure());
     putDirectOffset(globalData, offset, value);
 }
 
 inline void JSObject::transitionTo(JSGlobalData& globalData, Structure* newStructure)
 {
+    PropertyStorage newStorage = propertyStorage();
     if (structure()->propertyStorageCapacity() != newStructure->propertyStorageCapacity())
-        allocatePropertyStorage(globalData, structure()->propertyStorageCapacity(), newStructure->propertyStorageCapacity());
-    setStructure(globalData, newStructure);
+        newStorage = growPropertyStorage(globalData, structure()->propertyStorageCapacity(), newStructure->propertyStorageCapacity());
+    setPropertyStorage(globalData, newStorage, newStructure);
 }
 
 inline JSValue JSObject::toPrimitive(ExecState* exec, PreferredPrimitiveType preferredType) const