virtual void visitDOMWrapper(DOMDataStore*, void* impl, v8::Persistent<v8::Object> v8Object)
{
WrapperTypeInfo* type = V8DOMWrapper::domWrapperType(v8Object);
if (!type->isSubclass(&V8ArrayBufferView::info))
return;
ArrayBufferView* arrayBufferView = V8ArrayBufferView::toNative(v8Object);
m_visitor->visitJSExternalArray(arrayBufferView);
}
void visitDOMWrapper(DOMDataStore* store, T* object, v8::Persistent<v8::Object> wrapper)
{
WrapperTypeInfo* typeInfo = V8DOMWrapper::domWrapperType(wrapper);
if (!S::process(object, wrapper, typeInfo)) {
ActiveDOMObject* activeDOMObject = typeInfo->toActiveDOMObject(wrapper);
if (activeDOMObject && activeDOMObject->hasPendingActivity())
wrapper.ClearWeak();
}
}
void ScriptWrappableVisitor::traceWrappersFrom(std::pair<void*, void*> internalFields)
{
WrapperTypeInfo* wrapperTypeInfo = reinterpret_cast<WrapperTypeInfo*>(internalFields.first);
if (wrapperTypeInfo->ginEmbedder != gin::GinEmbedder::kEmbedderBlink)
return;
ScriptWrappable* scriptWrappable = reinterpret_cast<ScriptWrappable*>(internalFields.second);
ASSERT(wrapperTypeInfo->wrapperClassId == WrapperTypeInfo::NodeClassId
|| wrapperTypeInfo->wrapperClassId == WrapperTypeInfo::ObjectClassId);
wrapperTypeInfo->traceWrappers(this, scriptWrappable);
}
void visitDOMWrapper(DOMDataStore* store, T* object, v8::Persistent<v8::Object> wrapper)
{
WrapperTypeInfo* typeInfo = V8DOMWrapper::domWrapperType(wrapper);
if (!S::process(object, wrapper, typeInfo)) {
ActiveDOMObject* activeDOMObject = typeInfo->toActiveDOMObject(wrapper);
if (activeDOMObject && activeDOMObject->hasPendingActivity()) {
ASSERT(!wrapper.IsWeak());
// NOTE: To re-enable weak status of the active object we use
// |object| from the map and not |activeDOMObject|. The latter
// may be a different pointer (in case ActiveDOMObject is not
// the main base class of the object's class) and pointer
// identity is required by DOM map functions.
wrapper.MakeWeak(object, callback);
}
}
}
void visitDOMWrapper(DOMDataStore* store, void* object, v8::Persistent<v8::Object> wrapper)
{
WrapperTypeInfo* typeInfo = V8DOMWrapper::domWrapperType(wrapper);
if (typeInfo->isSubclass(&V8StyleSheetList::info)) {
StyleSheetList* styleSheetList = static_cast<StyleSheetList*>(object);
GroupId groupId(styleSheetList);
if (Document* document = styleSheetList->document())
groupId = GroupId(document);
m_grouper.append(GrouperItem(groupId, wrapper));
} else if (typeInfo->isSubclass(&V8DOMImplementation::info)) {
DOMImplementation* domImplementation = static_cast<DOMImplementation*>(object);
GroupId groupId(domImplementation);
if (Document* document = domImplementation->document())
groupId = GroupId(document);
m_grouper.append(GrouperItem(groupId, wrapper));
} else if (typeInfo->isSubclass(&V8StyleSheet::info) || typeInfo->isSubclass(&V8CSSRule::info)) {
m_grouper.append(GrouperItem(calculateGroupId(static_cast<StyleBase*>(object)), wrapper));
#if 0 //CMP_ERROR_UNCLEAR CSSMutableStyleDeclaration
} else if (typeInfo->isSubclass(&V8CSSStyleDeclaration::info)) {
CSSStyleDeclaration* cssStyleDeclaration = static_cast<CSSStyleDeclaration*>(object);
GroupId groupId = calculateGroupId(cssStyleDeclaration);
m_grouper.append(GrouperItem(groupId, wrapper));
// Keep alive "dirty" primitive values (i.e. the ones that
// have user-added properties) by creating implicit
// references between the style declaration and the values
// in it.
if (cssStyleDeclaration->isMutableStyleDeclaration()) {
CSSMutableStyleDeclaration* cssMutableStyleDeclaration = static_cast<CSSMutableStyleDeclaration*>(cssStyleDeclaration);
Vector<v8::Persistent<v8::Value> > values;
values.reserveCapacity(cssMutableStyleDeclaration->length());
CSSMutableStyleDeclaration::const_iterator end = cssMutableStyleDeclaration->end();
for (CSSMutableStyleDeclaration::const_iterator it = cssMutableStyleDeclaration->begin(); it != end; ++it) {
v8::Persistent<v8::Object> value = store->domObjectMap().get(it->value());
if (!value.IsEmpty() && value->IsDirty())
values.append(value);
}
if (!values.isEmpty())
v8::V8::AddImplicitReferences(wrapper, values.data(), values.size());
}
} else if (typeInfo->isSubclass(&V8CSSRuleList::info)) {
CSSRuleList* cssRuleList = static_cast<CSSRuleList*>(object);
GroupId groupId(cssRuleList);
StyleList* styleList = cssRuleList->styleList();
if (styleList)
groupId = calculateGroupId(styleList);
m_grouper.append(GrouperItem(groupId, wrapper));
#endif
}
}
void visitDOMWrapper(DOMDataStore* store, void* object, v8::Persistent<v8::Object> wrapper)
{
WrapperTypeInfo* typeInfo = V8DOMWrapper::domWrapperType(wrapper);
// Additional handling of message port ensuring that entangled ports also
// have their wrappers entangled. This should ideally be handled when the
// ports are actually entangled in MessagePort::entangle, but to avoid
// forking MessagePort.* this is postponed to GC time. Having this postponed
// has the drawback that the wrappers are "entangled/unentangled" for each
// GC even though their entaglement most likely is still the same.
if (V8MessagePort::info.equals(typeInfo)) {
// Mark each port as in-use if it's entangled. For simplicity's sake, we assume all ports are remotely entangled,
// since the Chromium port implementation can't tell the difference.
MessagePort* port1 = static_cast<MessagePort*>(object);
if (port1->isEntangled() || port1->hasPendingActivity())
wrapper.ClearWeak();
} else {
ActiveDOMObject* activeDOMObject = typeInfo->toActiveDOMObject(wrapper);
if (activeDOMObject && activeDOMObject->hasPendingActivity())
wrapper.ClearWeak();
}
}
void visitDOMWrapper(DOMDataStore* store, void* object, v8::Persistent<v8::Object> wrapper)
{
WrapperTypeInfo* typeInfo = V8DOMWrapper::domWrapperType(wrapper);
if (V8MessagePort::info.equals(typeInfo)) {
MessagePort* port1 = static_cast<MessagePort*>(object);
// We marked this port as reachable in GCPrologueVisitor. Undo this now since the
// port could be not reachable in the future if it gets disentangled (and also
// GCPrologueVisitor expects to see all handles marked as weak).
if ((!wrapper.IsWeak() && !wrapper.IsNearDeath()) || port1->hasPendingActivity())
wrapper.MakeWeak(port1, &DOMDataStore::weakActiveDOMObjectCallback);
} else {
ActiveDOMObject* activeDOMObject = typeInfo->toActiveDOMObject(wrapper);
if (activeDOMObject && activeDOMObject->hasPendingActivity()) {
ASSERT(!wrapper.IsWeak());
// NOTE: To re-enable weak status of the active object we use
// |object| from the map and not |activeDOMObject|. The latter
// may be a different pointer (in case ActiveDOMObject is not
// the main base class of the object's class) and pointer
// identity is required by DOM map functions.
wrapper.MakeWeak(object, &DOMDataStore::weakActiveDOMObjectCallback);
}
}
}