/* THIS FILE IS AUTOGENERATED FROM Worker.webidl BY Codegen.py - DO NOT EDIT */ #include #include "AtomList.h" #include "EventHandlerBinding.h" #include "EventTargetBinding.h" #include "MainThreadUtils.h" #include "MessagePortBinding.h" #include "WorkerBinding.h" #include "WrapperFactory.h" #include "js/Array.h" #include "js/CallAndConstruct.h" #include "js/Exception.h" #include "js/ForOfIterator.h" #include "js/MapAndSet.h" #include "js/Object.h" #include "js/PropertyAndElement.h" #include "js/PropertyDescriptor.h" #include "js/experimental/JitInfo.h" #include "jsapi.h" #include "mozilla/Atomics.h" #include "mozilla/OwningNonNull.h" #include "mozilla/ProfilerLabels.h" #include "mozilla/dom/BindingCallContext.h" #include "mozilla/dom/BindingUtils.h" #include "mozilla/dom/ChromeWorker.h" #include "mozilla/dom/DOMJSClass.h" #include "mozilla/dom/NonRefcountedDOMObject.h" #include "mozilla/dom/Nullable.h" #include "mozilla/dom/RootedDictionary.h" #include "mozilla/dom/ScriptSettings.h" #include "mozilla/dom/SimpleGlobalObject.h" #include "mozilla/dom/TrustedScriptURL.h" #include "mozilla/dom/UnionTypes.h" #include "mozilla/dom/Worker.h" #include "mozilla/dom/XrayExpandoClass.h" #include "nsThreadUtils.h" namespace mozilla { namespace dom { namespace binding_detail {}; // Just to make sure it's known as a namespace using namespace mozilla::dom::binding_detail; namespace binding_detail { constexpr nsLiteralCString EnumStrings::Values[2]; } // namespace binding_detail bool ToJSValue(JSContext* aCx, WorkerType aArgument, JS::MutableHandle aValue) { MOZ_ASSERT(uint32_t(aArgument) < std::size(binding_detail::EnumStrings::Values)); JSString* resultStr = JS_NewStringCopyN(aCx, binding_detail::EnumStrings::Values[uint32_t(aArgument)].BeginReading(), binding_detail::EnumStrings::Values[uint32_t(aArgument)].Length()); if (!resultStr) { return false; } aValue.setString(resultStr); return true; } WorkerOptions::WorkerOptions() { // Safe to pass a null context if we pass a null value Init(nullptr, JS::NullHandleValue); } bool WorkerOptions::InitIds(JSContext* cx, WorkerOptionsAtoms* atomsCache) { MOZ_ASSERT(reinterpret_cast(atomsCache)->isVoid()); // Initialize these in reverse order so that any failure leaves the first one // uninitialized. if (!atomsCache->type_id.init(cx, "type") || !atomsCache->name_id.init(cx, "name") || !atomsCache->credentials_id.init(cx, "credentials")) { return false; } return true; } bool WorkerOptions::Init(BindingCallContext& cx, JS::Handle val, const char* sourceDescription, bool passedToJSImpl) { // Passing a null JSContext is OK only if we're initing from null, // Since in that case we will not have to do any property gets // Also evaluate isNullOrUndefined in order to avoid false-positive // checkers by static analysis tools MOZ_ASSERT_IF(!cx, val.isNull() && val.isNullOrUndefined()); WorkerOptionsAtoms* atomsCache = nullptr; if (cx) { atomsCache = GetAtomCache(cx); if (reinterpret_cast(atomsCache)->isVoid() && !InitIds(cx, atomsCache)) { return false; } } if (!IsConvertibleToDictionary(val)) { return cx.ThrowErrorMessage(sourceDescription, "dictionary"); } bool isNull = val.isNullOrUndefined(); // We only need these if !isNull, in which case we have |cx|. Maybe > object; Maybe > temp; if (!isNull) { MOZ_ASSERT(cx); object.emplace(cx, &val.toObject()); temp.emplace(cx); } if (!isNull) { if (!JS_GetPropertyById(cx, *object, atomsCache->credentials_id, temp.ptr())) { return false; } } if (!isNull && !temp->isUndefined()) { { int index; if (!binding_detail::FindEnumStringIndex(cx, temp.ref(), binding_detail::EnumStrings::Values, "RequestCredentials", "'credentials' member of WorkerOptions", &index)) { return false; } MOZ_ASSERT(index >= 0); mCredentials = static_cast(index); } } else { mCredentials = RequestCredentials::Same_origin; } mIsAnyMemberPresent = true; if (!isNull) { if (!JS_GetPropertyById(cx, *object, atomsCache->name_id, temp.ptr())) { return false; } } if (!isNull && !temp->isUndefined()) { if (!ConvertJSValueToString(cx, temp.ref(), eStringify, eStringify, mName)) { return false; } } else { mName.AssignLiteral(u""); } mIsAnyMemberPresent = true; if (!isNull) { if (!JS_GetPropertyById(cx, *object, atomsCache->type_id, temp.ptr())) { return false; } } if (!isNull && !temp->isUndefined()) { { int index; if (!binding_detail::FindEnumStringIndex(cx, temp.ref(), binding_detail::EnumStrings::Values, "WorkerType", "'type' member of WorkerOptions", &index)) { return false; } MOZ_ASSERT(index >= 0); mType = static_cast(index); } } else { mType = WorkerType::Classic; } mIsAnyMemberPresent = true; return true; } bool WorkerOptions::Init(JSContext* cx_, JS::Handle val, const char* sourceDescription, bool passedToJSImpl) { // We don't want to use sourceDescription for our context here; // that's not really what it's formatted for. BindingCallContext cx(cx_, nullptr); return Init(cx, val, sourceDescription, passedToJSImpl); } void WorkerOptions::TraceDictionary(JSTracer* trc) { } WorkerOptions& WorkerOptions::operator=(const WorkerOptions& aOther) { MaybeEmptyDictionaryBase::operator=(aOther); mCredentials = aOther.mCredentials; mName = aOther.mName; mType = aOther.mType; return *this; } namespace ChromeWorker_Binding { static_assert(IsRefcounted::value == IsRefcounted::value, "Can't inherit from an interface with a different ownership model."); static void _finalize(JS::GCContext* gcx, JSObject* obj) { mozilla::dom::ChromeWorker* self = UnwrapPossiblyNotInitializedDOMObject(obj); if (self) { JS::SetNativeObjectReservedSlot(obj, DOM_OBJECT_SLOT, JS::UndefinedValue()); ClearWrapper(self, self, obj); if (size_t mallocBytes = BindingJSObjectMallocBytes(self)) { JS::RemoveAssociatedMemory(obj, mallocBytes, JS::MemoryUse::DOMBinding); } AddForDeferredFinalization(self); } } bool sNativePropertiesInited = false; const NativePropertyHooks sNativePropertyHooks = { nullptr, { nullptr, nullptr, &sNativePropertiesInited }, prototypes::id::ChromeWorker, constructors::id::ChromeWorker, &DefaultXrayExpandoObjectClass }; static bool _constructor(JSContext* cx_, unsigned argc, JS::Value* vp) { BindingCallContext cx(cx_, "ChromeWorker constructor"); AUTO_PROFILER_LABEL_DYNAMIC_FAST( "ChromeWorker", "constructor", DOM, cx, uint32_t(js::ProfilingStackFrame::Flags::RELEVANT_FOR_JS)); JS::CallArgs args = JS::CallArgsFromVp(argc, vp); JS::Rooted obj(cx, &args.callee()); if (!args.isConstructing()) { return ThrowConstructorWithoutNew(cx, "ChromeWorker"); } JS::Rooted desiredProto(cx); if (!GetDesiredProto(cx, args, prototypes::id::ChromeWorker, CreateInterfaceObjects, &desiredProto)) { return false; } if (!args.requireAtLeast(cx, "ChromeWorker constructor", 1)) { return false; } GlobalObject global(cx, obj); if (global.Failed()) { return false; } bool objIsXray = xpc::WrapperFactory::IsXrayWrapper(obj); nsAutoString arg0; if (!ConvertJSValueToString(cx, args[0], eStringify, eStringify, arg0)) { return false; } if (!NormalizeUSVString(arg0)) { JS_ReportOutOfMemory(cx); return false; } binding_detail::FastWorkerOptions arg1; if (!arg1.Init(cx, (args.hasDefined(1)) ? args[1] : JS::NullHandleValue, "Argument 2", false)) { return false; } Maybe ar; if (objIsXray) { // Since our object is an Xray, we can just CheckedUnwrapStatic: // we know Xrays have no dynamic unwrap behavior. obj = js::CheckedUnwrapStatic(obj); if (!obj) { return false; } ar.emplace(cx, obj); if (!JS_WrapObject(cx, &desiredProto)) { return false; } } FastErrorResult rv; auto result(StrongOrRawPtr(mozilla::dom::ChromeWorker::Constructor(global, Constify(arg0), Constify(arg1), rv))); if (rv.MaybeSetPendingException(cx, "ChromeWorker constructor")) [[unlikely]] { return false; } MOZ_ASSERT(!JS_IsExceptionPending(cx)); static_assert(!std::is_pointer_v, "NewObject implies that we need to keep the object alive with a strong reference."); if (!GetOrCreateDOMReflector(cx, result, args.rval(), desiredProto)) { MOZ_ASSERT(JS_IsExceptionPending(cx)); return false; } return true; } static const DOMInterfaceInfo sInterfaceObjectInfo = { { _constructor, &sNativePropertyHooks }, Worker_Binding::GetConstructorObjectHandle, PrototypeTraits::Depth, prototypes::id::ChromeWorker, true, 1, "ChromeWorker", }; static const DOMIfaceAndProtoJSClass sPrototypeClass = { { "ChromeWorkerPrototype", JSCLASS_IS_DOMIFACEANDPROTOJSCLASS | JSCLASS_HAS_RESERVED_SLOTS(DOM_INTERFACE_PROTO_SLOTS_BASE), JS_NULL_CLASS_OPS, JS_NULL_CLASS_SPEC, JS_NULL_CLASS_EXT, JS_NULL_OBJECT_OPS }, eInterfacePrototype, prototypes::id::ChromeWorker, PrototypeTraits::Depth, &sNativePropertyHooks, Worker_Binding::GetProtoObject }; bool ConstructorEnabled(JSContext* aCx, JS::Handle aObj) { if (!NS_IsMainThread()) { const char* name = JS::GetClass(aObj)->name; if (strcmp(name, "DedicatedWorkerGlobalScope") && strcmp(name, "SharedWorkerGlobalScope")) { return false; } } return mozilla::dom::ChromeWorker::WorkerAvailable(aCx, aObj); } static JS::Handle GetProtoObjectHandle(JSContext* aCx); static const JSClassOps sClassOps = { nullptr, /* addProperty */ nullptr, /* delProperty */ nullptr, /* enumerate */ nullptr, /* newEnumerate */ nullptr, /* resolve */ nullptr, /* mayResolve */ _finalize, /* finalize */ nullptr, /* call */ nullptr, /* construct */ nullptr, /* trace */ }; static const DOMJSClass sClass = { { "ChromeWorker", JSCLASS_IS_DOMJSCLASS | JSCLASS_FOREGROUND_FINALIZE | JSCLASS_HAS_RESERVED_SLOTS(1) | JSCLASS_PRESERVES_WRAPPER, &sClassOps, JS_NULL_CLASS_SPEC, &NativeTypeHelpers::sClassExtension, JS_NULL_OBJECT_OPS }, { prototypes::id::EventTarget, prototypes::id::Worker, prototypes::id::ChromeWorker, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count }, std::is_base_of_v, &sNativePropertyHooks, GetProtoObjectHandle, GetCCParticipant::Get(), nullptr, NativeTypeHelpers::GetWrapperCache }; static_assert(1 == DOM_INSTANCE_RESERVED_SLOTS, "Must have the right minimal number of reserved slots."); static_assert(1 >= 1, "Must have enough reserved slots."); bool Wrap(JSContext* aCx, mozilla::dom::ChromeWorker* aObject, nsWrapperCache* aCache, JS::Handle aGivenProto, JS::MutableHandle aReflector) { static_assert(!std::is_base_of_v, "Shouldn't have wrappercached things that are not refcounted."); static_assert(std::is_same_v); MOZ_ASSERT(static_cast(aObject) == reinterpret_cast(aObject), "Multiple inheritance for mozilla::dom::Worker is broken."); MOZ_ASSERT(static_cast(aObject) == reinterpret_cast(aObject), "Multiple inheritance for mozilla::dom::EventTarget is broken."); MOZ_ASSERT(ToSupportsIsCorrect(aObject)); MOZ_ASSERT_IF(aGivenProto, js::IsObjectInContextCompartment(aGivenProto, aCx)); MOZ_ASSERT(!aCache->GetWrapper(), "You should probably not be using Wrap() directly; use " "GetOrCreateDOMReflector instead"); MOZ_ASSERT(ToSupportsIsOnPrimaryInheritanceChain(aObject, aCache), "nsISupports must be on our primary inheritance chain"); // If the wrapper cache contains a dead reflector then finalize that // now, ensuring that the finalizer for the old reflector always // runs before the new reflector is created and attached. This // avoids the awkward situation where there are multiple reflector // objects that contain pointers to the same native. if (JSObject* oldReflector = aCache->GetWrapperMaybeDead()) { _finalize(nullptr /* unused */, oldReflector); MOZ_ASSERT(!aCache->GetWrapperMaybeDead()); } JS::Rooted global(aCx, FindAssociatedGlobal(aCx, aObject->GetParentObject())); if (!global) { return false; } MOZ_ASSERT(JS_IsGlobalObject(global)); JS::AssertObjectIsNotGray(global); // That might have ended up wrapping us already, due to the wonders // of XBL. Check for that, and bail out as needed. aReflector.set(aCache->GetWrapper()); if (aReflector) { #ifdef DEBUG AssertReflectorHasGivenProto(aCx, aReflector, aGivenProto); #endif // DEBUG return true; } JSAutoRealm ar(aCx, global); JS::Handle canonicalProto = GetProtoObjectHandle(aCx); if (!canonicalProto) { return false; } JS::Rooted proto(aCx); if (aGivenProto) { proto = aGivenProto; // Unfortunately, while aGivenProto was in the compartment of aCx // coming in, we changed compartments to that of "parent" so may need // to wrap the proto here. if (js::GetContextCompartment(aCx) != JS::GetCompartment(proto)) { if (!JS_WrapObject(aCx, &proto)) { return false; } } } else { proto = canonicalProto; } BindingJSObjectCreator creator(aCx); creator.CreateObject(aCx, sClass.ToJSClass(), proto, aObject, aReflector); if (!aReflector) { return false; } aCache->SetWrapper(aReflector); creator.InitializationSucceeded(); MOZ_ASSERT(aCache->GetWrapperPreserveColor() && aCache->GetWrapperPreserveColor() == aReflector); // If proto != canonicalProto, we have to preserve our wrapper; // otherwise we won't be able to properly recreate it later, since // we won't know what proto to use. Note that we don't check // aGivenProto here, since it's entirely possible (and even // somewhat common) to have a non-null aGivenProto which is the // same as canonicalProto. if (proto != canonicalProto) { PreserveWrapper(aObject); } return true; } void CreateInterfaceObjects(JSContext* aCx, JS::Handle aGlobal, ProtoAndIfaceCache& aProtoAndIfaceCache, DefineInterfaceProperty aDefineOnGlobal) { JS::Heap* protoCache = &aProtoAndIfaceCache.EntrySlotOrCreate(prototypes::id::ChromeWorker); JS::Heap* interfaceCache = &aProtoAndIfaceCache.EntrySlotOrCreate(constructors::id::ChromeWorker); JS::Handle parentProto(Worker_Binding::GetProtoObjectHandle(aCx)); if (!parentProto) { return; } JS::Handle constructorProto(Worker_Binding::GetConstructorObjectHandle(aCx)); if (!constructorProto) { return; } dom::CreateInterfaceObjects(aCx, aGlobal, parentProto, &sPrototypeClass, protoCache, constructorProto, &sInterfaceObjectInfo, 1, false, Span{}, interfaceCache, nullptr, nullptr, "ChromeWorker", ShouldExpose(aCx, aGlobal, aDefineOnGlobal), nullptr, false, nullptr); } static JS::Handle GetProtoObjectHandle(JSContext* aCx) { /* Get the interface prototype object for this class. This will create the object as needed. */ return GetPerInterfaceObjectHandle(aCx, prototypes::id::ChromeWorker, &CreateInterfaceObjects, DefineInterfaceProperty::CheckExposure); } JS::Handle GetConstructorObjectHandle(JSContext* aCx) { /* Get the interface object for this class. This will create the object as needed. */ return GetPerInterfaceObjectHandle(aCx, constructors::id::ChromeWorker, &CreateInterfaceObjects, DefineInterfaceProperty::CheckExposure); } } // namespace ChromeWorker_Binding namespace Worker_Binding { static_assert(IsRefcounted::value == IsRefcounted::value, "Can't inherit from an interface with a different ownership model."); MOZ_CAN_RUN_SCRIPT static bool terminate(JSContext* cx, JS::Handle obj, void* void_self, const JSJitMethodCallArgs& args) { AUTO_PROFILER_LABEL_DYNAMIC_FAST( "Worker", "terminate", DOM, cx, uint32_t(js::ProfilingStackFrame::Flags::STRING_TEMPLATE_METHOD) | uint32_t(js::ProfilingStackFrame::Flags::RELEVANT_FOR_JS)); auto* self = static_cast(void_self); // NOTE: This assert does NOT call the function. static_assert(std::is_void_vTerminate())>, "Should be returning void here"); MOZ_KnownLive(self)->Terminate(); MOZ_ASSERT(!JS_IsExceptionPending(cx)); args.rval().setUndefined(); return true; } static const JSJitInfo terminate_methodinfo = { { (JSJitGetterOp)terminate }, { prototypes::id::Worker }, { PrototypeTraits::Depth }, JSJitInfo::Method, JSJitInfo::AliasEverything, /* aliasSet. Not relevant for setters. */ JSVAL_TYPE_UNDEFINED, /* returnType. Not relevant for setters. */ true, /* isInfallible. False in setters. */ false, /* isMovable. Not relevant for setters. */ false, /* isEliminatable. Not relevant for setters. */ false, /* isAlwaysInSlot. Only relevant for getters. */ false, /* isLazilyCachedInSlot. Only relevant for getters. */ false, /* isTypedMethod. Only relevant for methods. */ 0 /* Reserved slot index, if we're stored in a slot, else 0. */ }; MOZ_CAN_RUN_SCRIPT static bool postMessage(JSContext* cx_, JS::Handle obj, void* void_self, const JSJitMethodCallArgs& args) { BindingCallContext cx(cx_, "Worker.postMessage"); AUTO_PROFILER_LABEL_DYNAMIC_FAST( "Worker", "postMessage", DOM, cx, uint32_t(js::ProfilingStackFrame::Flags::STRING_TEMPLATE_METHOD) | uint32_t(js::ProfilingStackFrame::Flags::RELEVANT_FOR_JS)); auto* self = static_cast(void_self); unsigned argcount = std::min(args.length(), 2u); switch (argcount) { case 1: { JS::Rooted arg0(cx); arg0 = args[0]; RootedDictionary arg1(cx); if (!arg1.Init(cx, (args.hasDefined(1)) ? args[1] : JS::NullHandleValue, "Argument 2", false)) { return false; } FastErrorResult rv; // NOTE: This assert does NOT call the function. static_assert(std::is_void_vPostMessage(cx, arg0, Constify(arg1), rv))>, "Should be returning void here"); MOZ_KnownLive(self)->PostMessage(cx, arg0, Constify(arg1), rv); if (rv.MaybeSetPendingException(cx, "Worker.postMessage")) [[unlikely]] { return false; } MOZ_ASSERT(!JS_IsExceptionPending(cx)); args.rval().setUndefined(); return true; break; } case 2: { JS::Rooted arg0(cx); arg0 = args[0]; if (args[1].isNullOrUndefined()) { RootedDictionary arg1(cx); if (!arg1.Init(cx, args[1], "Argument 2", false)) { return false; } FastErrorResult rv; // NOTE: This assert does NOT call the function. static_assert(std::is_void_vPostMessage(cx, arg0, Constify(arg1), rv))>, "Should be returning void here"); MOZ_KnownLive(self)->PostMessage(cx, arg0, Constify(arg1), rv); if (rv.MaybeSetPendingException(cx, "Worker.postMessage")) [[unlikely]] { return false; } MOZ_ASSERT(!JS_IsExceptionPending(cx)); args.rval().setUndefined(); return true; } if (args[1].isObject()) { do { binding_detail::AutoSequence arg1; SequenceRooter arg1_holder(cx, &arg1); JS::ForOfIterator iter(cx); if (!iter.init(args[1], JS::ForOfIterator::AllowNonIterable)) { return false; } if (!iter.valueIsIterable()) { break; } binding_detail::AutoSequence &arr = arg1; if (mozilla::Maybe sizeHint = iter.sizeHint()) { if (!arr.SetCapacity(*sizeHint, mozilla::fallible)) { JS_ReportOutOfMemory(cx); return false; } } JS::Rooted temp(cx); while (true) { bool done; if (!iter.next(&temp, &done)) { return false; } if (done) { break; } JSObject** slotPtr = arr.AppendElement(nullptr, mozilla::fallible); if (!slotPtr) { JS_ReportOutOfMemory(cx); return false; } JSObject*& slot = *slotPtr; if (temp.isObject()) { slot = &temp.toObject(); } else { cx.ThrowErrorMessage("Element of argument 2"); return false; } } FastErrorResult rv; // NOTE: This assert does NOT call the function. static_assert(std::is_void_vPostMessage(cx, arg0, Constify(arg1), rv))>, "Should be returning void here"); MOZ_KnownLive(self)->PostMessage(cx, arg0, Constify(arg1), rv); if (rv.MaybeSetPendingException(cx, "Worker.postMessage")) [[unlikely]] { return false; } MOZ_ASSERT(!JS_IsExceptionPending(cx)); args.rval().setUndefined(); return true; } while (false); do { RootedDictionary arg1(cx); if (!arg1.Init(cx, args[1], "Argument 2", false)) { return false; } FastErrorResult rv; // NOTE: This assert does NOT call the function. static_assert(std::is_void_vPostMessage(cx, arg0, Constify(arg1), rv))>, "Should be returning void here"); MOZ_KnownLive(self)->PostMessage(cx, arg0, Constify(arg1), rv); if (rv.MaybeSetPendingException(cx, "Worker.postMessage")) [[unlikely]] { return false; } MOZ_ASSERT(!JS_IsExceptionPending(cx)); args.rval().setUndefined(); return true; } while (false); } return cx.ThrowErrorMessage("2", "2"); break; } default: { // Using nsPrintfCString here would require including that // header. Let's not worry about it. nsAutoCString argCountStr; argCountStr.AppendPrintf("%u", args.length()); return cx.ThrowErrorMessage(argCountStr.get()); } } MOZ_CRASH("We have an always-returning default case"); return false; } static const JSJitInfo postMessage_methodinfo = { { (JSJitGetterOp)postMessage }, { prototypes::id::Worker }, { PrototypeTraits::Depth }, JSJitInfo::Method, JSJitInfo::AliasEverything, /* aliasSet. Not relevant for setters. */ JSVAL_TYPE_UNDEFINED, /* returnType. Not relevant for setters. */ false, /* isInfallible. False in setters. */ false, /* isMovable. Not relevant for setters. */ false, /* isEliminatable. Not relevant for setters. */ false, /* isAlwaysInSlot. Only relevant for getters. */ false, /* isLazilyCachedInSlot. Only relevant for getters. */ false, /* isTypedMethod. Only relevant for methods. */ 0 /* Reserved slot index, if we're stored in a slot, else 0. */ }; MOZ_CAN_RUN_SCRIPT static bool get_onmessage(JSContext* cx, JS::Handle obj, void* void_self, JSJitGetterCallArgs args) { AUTO_PROFILER_LABEL_DYNAMIC_FAST( "Worker", "onmessage", DOM, cx, uint32_t(js::ProfilingStackFrame::Flags::STRING_TEMPLATE_GETTER) | uint32_t(js::ProfilingStackFrame::Flags::RELEVANT_FOR_JS)); auto* self = static_cast(void_self); RefPtr result(MOZ_KnownLive(self)->GetOnmessage()); MOZ_ASSERT(!JS_IsExceptionPending(cx)); if (result) { args.rval().setObjectOrNull(GetCallbackFromCallbackObject(cx, result)); if (!MaybeWrapObjectOrNullValue(cx, args.rval())) { return false; } return true; } else { args.rval().setNull(); return true; } } MOZ_CAN_RUN_SCRIPT static bool set_onmessage(JSContext* cx, JS::Handle obj, void* void_self, JSJitSetterCallArgs args) { AUTO_PROFILER_LABEL_DYNAMIC_FAST( "Worker", "onmessage", DOM, cx, uint32_t(js::ProfilingStackFrame::Flags::STRING_TEMPLATE_SETTER) | uint32_t(js::ProfilingStackFrame::Flags::RELEVANT_FOR_JS)); auto* self = static_cast(void_self); RootedCallback> arg0(cx); if (args[0].isObject()) { { // scope for tempRoot and tempGlobalRoot if needed arg0 = new binding_detail::FastEventHandlerNonNull(&args[0].toObject(), JS::CurrentGlobalOrNull(cx)); } } else { arg0 = nullptr; } // NOTE: This assert does NOT call the function. static_assert(std::is_void_vSetOnmessage(MOZ_KnownLive(Constify(arg0))))>, "Should be returning void here"); MOZ_KnownLive(self)->SetOnmessage(MOZ_KnownLive(Constify(arg0))); MOZ_ASSERT(!JS_IsExceptionPending(cx)); return true; } static const JSJitInfo onmessage_getterinfo = { { get_onmessage }, { prototypes::id::Worker }, { PrototypeTraits::Depth }, JSJitInfo::Getter, JSJitInfo::AliasEverything, /* aliasSet. Not relevant for setters. */ JSVAL_TYPE_UNKNOWN, /* returnType. Not relevant for setters. */ false, /* isInfallible. False in setters. */ false, /* isMovable. Not relevant for setters. */ false, /* isEliminatable. Not relevant for setters. */ false, /* isAlwaysInSlot. Only relevant for getters. */ false, /* isLazilyCachedInSlot. Only relevant for getters. */ false, /* isTypedMethod. Only relevant for methods. */ 0 /* Reserved slot index, if we're stored in a slot, else 0. */ }; static const JSJitInfo onmessage_setterinfo = { { (JSJitGetterOp)set_onmessage }, { prototypes::id::Worker }, { PrototypeTraits::Depth }, JSJitInfo::Setter, JSJitInfo::AliasEverything, /* aliasSet. Not relevant for setters. */ JSVAL_TYPE_UNDEFINED, /* returnType. Not relevant for setters. */ false, /* isInfallible. False in setters. */ false, /* isMovable. Not relevant for setters. */ false, /* isEliminatable. Not relevant for setters. */ false, /* isAlwaysInSlot. Only relevant for getters. */ false, /* isLazilyCachedInSlot. Only relevant for getters. */ false, /* isTypedMethod. Only relevant for methods. */ 0 /* Reserved slot index, if we're stored in a slot, else 0. */ }; MOZ_CAN_RUN_SCRIPT static bool get_onmessageerror(JSContext* cx, JS::Handle obj, void* void_self, JSJitGetterCallArgs args) { AUTO_PROFILER_LABEL_DYNAMIC_FAST( "Worker", "onmessageerror", DOM, cx, uint32_t(js::ProfilingStackFrame::Flags::STRING_TEMPLATE_GETTER) | uint32_t(js::ProfilingStackFrame::Flags::RELEVANT_FOR_JS)); auto* self = static_cast(void_self); RefPtr result(MOZ_KnownLive(self)->GetOnmessageerror()); MOZ_ASSERT(!JS_IsExceptionPending(cx)); if (result) { args.rval().setObjectOrNull(GetCallbackFromCallbackObject(cx, result)); if (!MaybeWrapObjectOrNullValue(cx, args.rval())) { return false; } return true; } else { args.rval().setNull(); return true; } } MOZ_CAN_RUN_SCRIPT static bool set_onmessageerror(JSContext* cx, JS::Handle obj, void* void_self, JSJitSetterCallArgs args) { AUTO_PROFILER_LABEL_DYNAMIC_FAST( "Worker", "onmessageerror", DOM, cx, uint32_t(js::ProfilingStackFrame::Flags::STRING_TEMPLATE_SETTER) | uint32_t(js::ProfilingStackFrame::Flags::RELEVANT_FOR_JS)); auto* self = static_cast(void_self); RootedCallback> arg0(cx); if (args[0].isObject()) { { // scope for tempRoot and tempGlobalRoot if needed arg0 = new binding_detail::FastEventHandlerNonNull(&args[0].toObject(), JS::CurrentGlobalOrNull(cx)); } } else { arg0 = nullptr; } // NOTE: This assert does NOT call the function. static_assert(std::is_void_vSetOnmessageerror(MOZ_KnownLive(Constify(arg0))))>, "Should be returning void here"); MOZ_KnownLive(self)->SetOnmessageerror(MOZ_KnownLive(Constify(arg0))); MOZ_ASSERT(!JS_IsExceptionPending(cx)); return true; } static const JSJitInfo onmessageerror_getterinfo = { { get_onmessageerror }, { prototypes::id::Worker }, { PrototypeTraits::Depth }, JSJitInfo::Getter, JSJitInfo::AliasEverything, /* aliasSet. Not relevant for setters. */ JSVAL_TYPE_UNKNOWN, /* returnType. Not relevant for setters. */ false, /* isInfallible. False in setters. */ false, /* isMovable. Not relevant for setters. */ false, /* isEliminatable. Not relevant for setters. */ false, /* isAlwaysInSlot. Only relevant for getters. */ false, /* isLazilyCachedInSlot. Only relevant for getters. */ false, /* isTypedMethod. Only relevant for methods. */ 0 /* Reserved slot index, if we're stored in a slot, else 0. */ }; static const JSJitInfo onmessageerror_setterinfo = { { (JSJitGetterOp)set_onmessageerror }, { prototypes::id::Worker }, { PrototypeTraits::Depth }, JSJitInfo::Setter, JSJitInfo::AliasEverything, /* aliasSet. Not relevant for setters. */ JSVAL_TYPE_UNDEFINED, /* returnType. Not relevant for setters. */ false, /* isInfallible. False in setters. */ false, /* isMovable. Not relevant for setters. */ false, /* isEliminatable. Not relevant for setters. */ false, /* isAlwaysInSlot. Only relevant for getters. */ false, /* isLazilyCachedInSlot. Only relevant for getters. */ false, /* isTypedMethod. Only relevant for methods. */ 0 /* Reserved slot index, if we're stored in a slot, else 0. */ }; MOZ_CAN_RUN_SCRIPT static bool get_onerror(JSContext* cx, JS::Handle obj, void* void_self, JSJitGetterCallArgs args) { AUTO_PROFILER_LABEL_DYNAMIC_FAST( "Worker", "onerror", DOM, cx, uint32_t(js::ProfilingStackFrame::Flags::STRING_TEMPLATE_GETTER) | uint32_t(js::ProfilingStackFrame::Flags::RELEVANT_FOR_JS)); auto* self = static_cast(void_self); RefPtr result(MOZ_KnownLive(self)->GetOnerror()); MOZ_ASSERT(!JS_IsExceptionPending(cx)); if (result) { args.rval().setObjectOrNull(GetCallbackFromCallbackObject(cx, result)); if (!MaybeWrapObjectOrNullValue(cx, args.rval())) { return false; } return true; } else { args.rval().setNull(); return true; } } MOZ_CAN_RUN_SCRIPT static bool set_onerror(JSContext* cx, JS::Handle obj, void* void_self, JSJitSetterCallArgs args) { AUTO_PROFILER_LABEL_DYNAMIC_FAST( "Worker", "onerror", DOM, cx, uint32_t(js::ProfilingStackFrame::Flags::STRING_TEMPLATE_SETTER) | uint32_t(js::ProfilingStackFrame::Flags::RELEVANT_FOR_JS)); auto* self = static_cast(void_self); RootedCallback> arg0(cx); if (args[0].isObject()) { { // scope for tempRoot and tempGlobalRoot if needed arg0 = new binding_detail::FastEventHandlerNonNull(&args[0].toObject(), JS::CurrentGlobalOrNull(cx)); } } else { arg0 = nullptr; } // NOTE: This assert does NOT call the function. static_assert(std::is_void_vSetOnerror(MOZ_KnownLive(Constify(arg0))))>, "Should be returning void here"); MOZ_KnownLive(self)->SetOnerror(MOZ_KnownLive(Constify(arg0))); MOZ_ASSERT(!JS_IsExceptionPending(cx)); return true; } static const JSJitInfo onerror_getterinfo = { { get_onerror }, { prototypes::id::Worker }, { PrototypeTraits::Depth }, JSJitInfo::Getter, JSJitInfo::AliasEverything, /* aliasSet. Not relevant for setters. */ JSVAL_TYPE_UNKNOWN, /* returnType. Not relevant for setters. */ false, /* isInfallible. False in setters. */ false, /* isMovable. Not relevant for setters. */ false, /* isEliminatable. Not relevant for setters. */ false, /* isAlwaysInSlot. Only relevant for getters. */ false, /* isLazilyCachedInSlot. Only relevant for getters. */ false, /* isTypedMethod. Only relevant for methods. */ 0 /* Reserved slot index, if we're stored in a slot, else 0. */ }; static const JSJitInfo onerror_setterinfo = { { (JSJitGetterOp)set_onerror }, { prototypes::id::Worker }, { PrototypeTraits::Depth }, JSJitInfo::Setter, JSJitInfo::AliasEverything, /* aliasSet. Not relevant for setters. */ JSVAL_TYPE_UNDEFINED, /* returnType. Not relevant for setters. */ false, /* isInfallible. False in setters. */ false, /* isMovable. Not relevant for setters. */ false, /* isEliminatable. Not relevant for setters. */ false, /* isAlwaysInSlot. Only relevant for getters. */ false, /* isLazilyCachedInSlot. Only relevant for getters. */ false, /* isTypedMethod. Only relevant for methods. */ 0 /* Reserved slot index, if we're stored in a slot, else 0. */ }; static void _finalize(JS::GCContext* gcx, JSObject* obj) { mozilla::dom::Worker* self = UnwrapPossiblyNotInitializedDOMObject(obj); if (self) { JS::SetNativeObjectReservedSlot(obj, DOM_OBJECT_SLOT, JS::UndefinedValue()); ClearWrapper(self, self, obj); if (size_t mallocBytes = BindingJSObjectMallocBytes(self)) { JS::RemoveAssociatedMemory(obj, mallocBytes, JS::MemoryUse::DOMBinding); } AddForDeferredFinalization(self); } } MOZ_GLOBINIT static const JSFunctionSpec sMethods_specs[] = { JS_FNSPEC("terminate", (GenericMethod), reinterpret_cast(&terminate_methodinfo), 0, JSPROP_ENUMERATE, nullptr), JS_FNSPEC("postMessage", (GenericMethod), reinterpret_cast(&postMessage_methodinfo), 1, JSPROP_ENUMERATE, nullptr), JS_FS_END }; static const Prefable sMethods[] = { { nullptr, &sMethods_specs[0] }, { nullptr, nullptr } }; static_assert(1 <= 1ull << NUM_BITS_PROPERTY_INFO_PREF_INDEX, "We have a prefable index that is >= (1 << NUM_BITS_PROPERTY_INFO_PREF_INDEX)"); static_assert(2 <= 1ull << NUM_BITS_PROPERTY_INFO_SPEC_INDEX, "We have a spec index that is >= (1 << NUM_BITS_PROPERTY_INFO_SPEC_INDEX)"); MOZ_GLOBINIT static const JSPropertySpec sAttributes_specs[] = { JSPropertySpec::nativeAccessors("onmessage", JSPROP_ENUMERATE, GenericGetter, &onmessage_getterinfo, GenericSetter, &onmessage_setterinfo), JSPropertySpec::nativeAccessors("onmessageerror", JSPROP_ENUMERATE, GenericGetter, &onmessageerror_getterinfo, GenericSetter, &onmessageerror_setterinfo), JSPropertySpec::nativeAccessors("onerror", JSPROP_ENUMERATE, GenericGetter, &onerror_getterinfo, GenericSetter, &onerror_setterinfo), JS_PS_END }; static const Prefable sAttributes[] = { { nullptr, &sAttributes_specs[0] }, { nullptr, nullptr } }; static_assert(1 <= 1ull << NUM_BITS_PROPERTY_INFO_PREF_INDEX, "We have a prefable index that is >= (1 << NUM_BITS_PROPERTY_INFO_PREF_INDEX)"); static_assert(3 <= 1ull << NUM_BITS_PROPERTY_INFO_SPEC_INDEX, "We have a spec index that is >= (1 << NUM_BITS_PROPERTY_INFO_SPEC_INDEX)"); static uint16_t sNativeProperties_sortedPropertyIndices[5]; static PropertyInfo sNativeProperties_propertyInfos[5]; static const NativePropertiesN<2> sNativeProperties = { false, 0, false, 0, true, 0 /* sMethods */, true, 1 /* sAttributes */, false, 0, false, 0, false, 0, -1, 5, sNativeProperties_sortedPropertyIndices, { { sMethods, &sNativeProperties_propertyInfos[0] }, { sAttributes, &sNativeProperties_propertyInfos[2] } } }; static_assert(5 < 1ull << (CHAR_BIT * sizeof(sNativeProperties.propertyInfoCount)), "We have a property info count that is oversized"); bool sNativePropertiesInited = false; const NativePropertyHooks sNativePropertyHooks = { nullptr, { sNativeProperties.Upcast(), nullptr, &sNativePropertiesInited }, prototypes::id::Worker, constructors::id::Worker, &DefaultXrayExpandoObjectClass }; static bool _constructor(JSContext* cx_, unsigned argc, JS::Value* vp) { BindingCallContext cx(cx_, "Worker constructor"); AUTO_PROFILER_LABEL_DYNAMIC_FAST( "Worker", "constructor", DOM, cx, uint32_t(js::ProfilingStackFrame::Flags::RELEVANT_FOR_JS)); JS::CallArgs args = JS::CallArgsFromVp(argc, vp); JS::Rooted obj(cx, &args.callee()); if (!args.isConstructing()) { return ThrowConstructorWithoutNew(cx, "Worker"); } JS::Rooted desiredProto(cx); if (!GetDesiredProto(cx, args, prototypes::id::Worker, CreateInterfaceObjects, &desiredProto)) { return false; } if (!args.requireAtLeast(cx, "Worker constructor", 1)) { return false; } GlobalObject global(cx, obj); if (global.Failed()) { return false; } bool objIsXray = xpc::WrapperFactory::IsXrayWrapper(obj); TrustedScriptURLOrUSVString arg0; if (!arg0.Init(cx, args[0], "Argument 1", false)) { return false; } binding_detail::FastWorkerOptions arg1; if (!arg1.Init(cx, (args.hasDefined(1)) ? args[1] : JS::NullHandleValue, "Argument 2", false)) { return false; } Maybe ar; if (objIsXray) { // Since our object is an Xray, we can just CheckedUnwrapStatic: // we know Xrays have no dynamic unwrap behavior. obj = js::CheckedUnwrapStatic(obj); if (!obj) { return false; } ar.emplace(cx, obj); if (!JS_WrapObject(cx, &desiredProto)) { return false; } } FastErrorResult rv; auto result(StrongOrRawPtr(mozilla::dom::Worker::Constructor(global, Constify(arg0), Constify(arg1), rv))); if (rv.MaybeSetPendingException(cx, "Worker constructor")) [[unlikely]] { return false; } MOZ_ASSERT(!JS_IsExceptionPending(cx)); static_assert(!std::is_pointer_v, "NewObject implies that we need to keep the object alive with a strong reference."); if (!GetOrCreateDOMReflector(cx, result, args.rval(), desiredProto)) { MOZ_ASSERT(JS_IsExceptionPending(cx)); return false; } return true; } static const DOMInterfaceInfo sInterfaceObjectInfo = { { _constructor, &sNativePropertyHooks }, EventTarget_Binding::GetConstructorObjectHandle, PrototypeTraits::Depth, prototypes::id::Worker, true, 1, "Worker", }; static const DOMIfaceAndProtoJSClass sPrototypeClass = { { "WorkerPrototype", JSCLASS_IS_DOMIFACEANDPROTOJSCLASS | JSCLASS_HAS_RESERVED_SLOTS(DOM_INTERFACE_PROTO_SLOTS_BASE), JS_NULL_CLASS_OPS, JS_NULL_CLASS_SPEC, JS_NULL_CLASS_EXT, JS_NULL_OBJECT_OPS }, eInterfacePrototype, prototypes::id::Worker, PrototypeTraits::Depth, &sNativePropertyHooks, EventTarget_Binding::GetProtoObject }; bool ConstructorEnabled(JSContext* aCx, JS::Handle aObj) { if (!NS_IsMainThread()) { const char* name = JS::GetClass(aObj)->name; if (strcmp(name, "DedicatedWorkerGlobalScope") && strcmp(name, "SharedWorkerGlobalScope")) { return false; } } return true; } static const JSClassOps sClassOps = { nullptr, /* addProperty */ nullptr, /* delProperty */ nullptr, /* enumerate */ nullptr, /* newEnumerate */ nullptr, /* resolve */ nullptr, /* mayResolve */ _finalize, /* finalize */ nullptr, /* call */ nullptr, /* construct */ nullptr, /* trace */ }; static const DOMJSClass sClass = { { "Worker", JSCLASS_IS_DOMJSCLASS | JSCLASS_FOREGROUND_FINALIZE | JSCLASS_HAS_RESERVED_SLOTS(1) | JSCLASS_PRESERVES_WRAPPER, &sClassOps, JS_NULL_CLASS_SPEC, &NativeTypeHelpers::sClassExtension, JS_NULL_OBJECT_OPS }, { prototypes::id::EventTarget, prototypes::id::Worker, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count }, std::is_base_of_v, &sNativePropertyHooks, GetProtoObjectHandle, GetCCParticipant::Get(), nullptr, NativeTypeHelpers::GetWrapperCache }; static_assert(1 == DOM_INSTANCE_RESERVED_SLOTS, "Must have the right minimal number of reserved slots."); static_assert(1 >= 1, "Must have enough reserved slots."); bool Wrap(JSContext* aCx, mozilla::dom::Worker* aObject, nsWrapperCache* aCache, JS::Handle aGivenProto, JS::MutableHandle aReflector) { static_assert(!std::is_base_of_v, "Shouldn't have wrappercached things that are not refcounted."); static_assert(std::is_same_v); MOZ_ASSERT(static_cast(aObject) == reinterpret_cast(aObject), "Multiple inheritance for mozilla::dom::EventTarget is broken."); MOZ_ASSERT(ToSupportsIsCorrect(aObject)); MOZ_ASSERT_IF(aGivenProto, js::IsObjectInContextCompartment(aGivenProto, aCx)); MOZ_ASSERT(!aCache->GetWrapper(), "You should probably not be using Wrap() directly; use " "GetOrCreateDOMReflector instead"); MOZ_ASSERT(ToSupportsIsOnPrimaryInheritanceChain(aObject, aCache), "nsISupports must be on our primary inheritance chain"); // If the wrapper cache contains a dead reflector then finalize that // now, ensuring that the finalizer for the old reflector always // runs before the new reflector is created and attached. This // avoids the awkward situation where there are multiple reflector // objects that contain pointers to the same native. if (JSObject* oldReflector = aCache->GetWrapperMaybeDead()) { _finalize(nullptr /* unused */, oldReflector); MOZ_ASSERT(!aCache->GetWrapperMaybeDead()); } JS::Rooted global(aCx, FindAssociatedGlobal(aCx, aObject->GetParentObject())); if (!global) { return false; } MOZ_ASSERT(JS_IsGlobalObject(global)); JS::AssertObjectIsNotGray(global); // That might have ended up wrapping us already, due to the wonders // of XBL. Check for that, and bail out as needed. aReflector.set(aCache->GetWrapper()); if (aReflector) { #ifdef DEBUG AssertReflectorHasGivenProto(aCx, aReflector, aGivenProto); #endif // DEBUG return true; } JSAutoRealm ar(aCx, global); JS::Handle canonicalProto = GetProtoObjectHandle(aCx); if (!canonicalProto) { return false; } JS::Rooted proto(aCx); if (aGivenProto) { proto = aGivenProto; // Unfortunately, while aGivenProto was in the compartment of aCx // coming in, we changed compartments to that of "parent" so may need // to wrap the proto here. if (js::GetContextCompartment(aCx) != JS::GetCompartment(proto)) { if (!JS_WrapObject(aCx, &proto)) { return false; } } } else { proto = canonicalProto; } BindingJSObjectCreator creator(aCx); creator.CreateObject(aCx, sClass.ToJSClass(), proto, aObject, aReflector); if (!aReflector) { return false; } aCache->SetWrapper(aReflector); creator.InitializationSucceeded(); MOZ_ASSERT(aCache->GetWrapperPreserveColor() && aCache->GetWrapperPreserveColor() == aReflector); // If proto != canonicalProto, we have to preserve our wrapper; // otherwise we won't be able to properly recreate it later, since // we won't know what proto to use. Note that we don't check // aGivenProto here, since it's entirely possible (and even // somewhat common) to have a non-null aGivenProto which is the // same as canonicalProto. if (proto != canonicalProto) { PreserveWrapper(aObject); } return true; } void CreateInterfaceObjects(JSContext* aCx, JS::Handle aGlobal, ProtoAndIfaceCache& aProtoAndIfaceCache, DefineInterfaceProperty aDefineOnGlobal) { JS::Heap* protoCache = &aProtoAndIfaceCache.EntrySlotOrCreate(prototypes::id::Worker); JS::Heap* interfaceCache = &aProtoAndIfaceCache.EntrySlotOrCreate(constructors::id::Worker); JS::Handle parentProto(EventTarget_Binding::GetProtoObjectHandle(aCx)); if (!parentProto) { return; } JS::Handle constructorProto(EventTarget_Binding::GetConstructorObjectHandle(aCx)); if (!constructorProto) { return; } dom::CreateInterfaceObjects(aCx, aGlobal, parentProto, &sPrototypeClass, protoCache, constructorProto, &sInterfaceObjectInfo, 1, false, Span{}, interfaceCache, sNativeProperties.Upcast(), nullptr, "Worker", ShouldExpose(aCx, aGlobal, aDefineOnGlobal), nullptr, false, nullptr); } JS::Handle GetProtoObjectHandle(JSContext* aCx) { /* Get the interface prototype object for this class. This will create the object as needed. */ return GetPerInterfaceObjectHandle(aCx, prototypes::id::Worker, &CreateInterfaceObjects, DefineInterfaceProperty::CheckExposure); } JSObject* GetProtoObject(JSContext* aCx) { return GetProtoObjectHandle(aCx); } JS::Handle GetConstructorObjectHandle(JSContext* aCx) { /* Get the interface object for this class. This will create the object as needed. */ return GetPerInterfaceObjectHandle(aCx, constructors::id::Worker, &CreateInterfaceObjects, DefineInterfaceProperty::CheckExposure); } } // namespace Worker_Binding } // namespace dom } // namespace mozilla