void WindowProxy::createContext() { // FIXME: This should be a null check of m_frame->client(), but there are // still some edge cases // that this fails to catch during frame detach. if (m_frame->isLocalFrame() && !toLocalFrame(m_frame)->loader().documentLoader()) return; // Create a new v8::Context with the window object as the global object // (aka the inner global). Reuse the global proxy object (aka the outer // global) if it already exists. See the comments in // setupWindowPrototypeChain for the structure of the prototype chain of // the global object. v8::Local<v8::ObjectTemplate> globalTemplate = V8Window::domTemplate(m_isolate, *m_world)->InstanceTemplate(); if (globalTemplate.IsEmpty()) return; // FIXME: It's not clear what the right thing to do for remote frames is. // The extensions registered don't generally seem to make sense for remote // frames, so skip it for now. Vector<const char*> extensionNames; if (m_frame->isLocalFrame()) { LocalFrame* frame = toLocalFrame(m_frame); // Dynamically tell v8 about our extensions now. const V8Extensions& extensions = ScriptController::registeredExtensions(); extensionNames.reserveInitialCapacity(extensions.size()); int extensionGroup = m_world->extensionGroup(); int worldId = m_world->worldId(); for (const auto* extension : extensions) { if (!frame->loader().client()->allowScriptExtension( extension->name(), extensionGroup, worldId)) continue; extensionNames.append(extension->name()); } } v8::ExtensionConfiguration extensionConfiguration(extensionNames.size(), extensionNames.data()); v8::Local<v8::Context> context; { V8PerIsolateData::UseCounterDisabledScope useCounterDisabled( V8PerIsolateData::from(m_isolate)); context = v8::Context::New(m_isolate, &extensionConfiguration, globalTemplate, m_global.newLocal(m_isolate)); } if (context.IsEmpty()) return; m_scriptState = ScriptState::create(context, m_world); }
bool WorkerOrWorkletScriptController::initializeContextIfNeeded() { v8::HandleScope handleScope(m_isolate); if (isContextInitialized()) return true; // Create a new v8::Context with the worker/worklet as the global object // (aka the inner global). ScriptWrappable* scriptWrappable = m_globalScope->getScriptWrappable(); const WrapperTypeInfo* wrapperTypeInfo = scriptWrappable->wrapperTypeInfo(); v8::Local<v8::FunctionTemplate> globalInterfaceTemplate = wrapperTypeInfo->domTemplate(m_isolate, *m_world); if (globalInterfaceTemplate.IsEmpty()) return false; v8::Local<v8::ObjectTemplate> globalTemplate = globalInterfaceTemplate->InstanceTemplate(); v8::Local<v8::Context> context; { // Initialize V8 extensions before creating the context. Vector<const char*> extensionNames; if (m_globalScope->isServiceWorkerGlobalScope() && Platform::current()->allowScriptExtensionForServiceWorker( toWorkerGlobalScope(m_globalScope.get())->url())) { const V8Extensions& extensions = ScriptController::registeredExtensions(); extensionNames.reserveInitialCapacity(extensions.size()); for (const auto* extension : extensions) extensionNames.push_back(extension->name()); } v8::ExtensionConfiguration extensionConfiguration(extensionNames.size(), extensionNames.data()); V8PerIsolateData::UseCounterDisabledScope useCounterDisabled( V8PerIsolateData::from(m_isolate)); context = v8::Context::New(m_isolate, &extensionConfiguration, globalTemplate); } if (context.IsEmpty()) return false; m_scriptState = ScriptState::create(context, m_world); ScriptState::Scope scope(m_scriptState.get()); // The global proxy object. Note this is not the global object. v8::Local<v8::Object> globalProxy = context->Global(); V8DOMWrapper::setNativeInfo(m_isolate, globalProxy, wrapperTypeInfo, scriptWrappable); // The global object, aka worker/worklet wrapper object. v8::Local<v8::Object> globalObject = globalProxy->GetPrototype().As<v8::Object>(); globalObject = V8DOMWrapper::associateObjectWithWrapper( m_isolate, scriptWrappable, wrapperTypeInfo, globalObject); // All interfaces must be registered to V8PerContextData. // So we explicitly call constructorForType for the global object. V8PerContextData::from(context)->constructorForType(wrapperTypeInfo); // Name new context for debugging. For main thread worklet global scopes // this is done once the context is initialized. if (m_globalScope->isWorkerGlobalScope() || m_globalScope->isThreadedWorkletGlobalScope()) { WorkerThreadDebugger* debugger = WorkerThreadDebugger::from(m_isolate); debugger->contextCreated(m_globalScope->thread(), context); } return true; }