| // Copyright 2013 The Flutter Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "component_v2.h" |
| |
| #include <dlfcn.h> |
| #include <fuchsia/mem/cpp/fidl.h> |
| #include <lib/async-loop/cpp/loop.h> |
| #include <lib/async/cpp/task.h> |
| #include <lib/async/default.h> |
| #include <lib/fdio/directory.h> |
| #include <lib/fdio/io.h> |
| #include <lib/fdio/namespace.h> |
| #include <lib/ui/scenic/cpp/view_ref_pair.h> |
| #include <lib/ui/scenic/cpp/view_token_pair.h> |
| #include <lib/vfs/cpp/composed_service_dir.h> |
| #include <lib/vfs/cpp/remote_dir.h> |
| #include <lib/vfs/cpp/service.h> |
| #include <sys/stat.h> |
| #include <zircon/dlfcn.h> |
| #include <zircon/status.h> |
| #include <zircon/types.h> |
| |
| #include <memory> |
| #include <regex> |
| #include <sstream> |
| |
| #include "file_in_namespace_buffer.h" |
| #include "flutter/fml/mapping.h" |
| #include "flutter/fml/platform/fuchsia/task_observers.h" |
| #include "flutter/fml/synchronization/waitable_event.h" |
| #include "flutter/fml/unique_fd.h" |
| #include "flutter/runtime/dart_vm_lifecycle.h" |
| #include "flutter/shell/common/switches.h" |
| #include "runtime/dart/utils/files.h" |
| #include "runtime/dart/utils/handle_exception.h" |
| #include "runtime/dart/utils/mapped_resource.h" |
| #include "runtime/dart/utils/tempfs.h" |
| #include "runtime/dart/utils/vmo.h" |
| |
| namespace flutter_runner { |
| namespace { |
| |
| constexpr char kDataKey[] = "data"; |
| constexpr char kAssetsKey[] = "assets"; |
| constexpr char kTmpPath[] = "/tmp"; |
| constexpr char kServiceRootPath[] = "/svc"; |
| constexpr char kRunnerConfigPath[] = "/config/data/flutter_runner_config"; |
| |
| std::string DebugLabelForUrl(const std::string& url) { |
| auto found = url.rfind("/"); |
| if (found == std::string::npos) { |
| return url; |
| } else { |
| return {url, found + 1}; |
| } |
| } |
| |
| } // namespace |
| |
| void ComponentV2::ParseProgramMetadata( |
| const fuchsia::data::Dictionary& program_metadata, |
| std::string* data_path, |
| std::string* assets_path) { |
| for (const auto& entry : program_metadata.entries()) { |
| if (entry.key.compare(kDataKey) == 0 && entry.value != nullptr) { |
| *data_path = "pkg/" + entry.value->str(); |
| } else if (entry.key.compare(kAssetsKey) == 0 && entry.value != nullptr) { |
| *assets_path = "pkg/" + entry.value->str(); |
| } |
| } |
| |
| // assets_path defaults to the same as data_path if omitted. |
| if (assets_path->empty()) { |
| *assets_path = *data_path; |
| } |
| } |
| |
| ActiveComponentV2 ComponentV2::Create( |
| TerminationCallback termination_callback, |
| fuchsia::component::runner::ComponentStartInfo start_info, |
| std::shared_ptr<sys::ServiceDirectory> runner_incoming_services, |
| fidl::InterfaceRequest<fuchsia::component::runner::ComponentController> |
| controller) { |
| auto thread = std::make_unique<fml::Thread>(); |
| std::unique_ptr<ComponentV2> component; |
| |
| fml::AutoResetWaitableEvent latch; |
| thread->GetTaskRunner()->PostTask([&]() mutable { |
| component.reset( |
| new ComponentV2(std::move(termination_callback), std::move(start_info), |
| runner_incoming_services, std::move(controller))); |
| latch.Signal(); |
| }); |
| |
| latch.Wait(); |
| return {.platform_thread = std::move(thread), |
| .component = std::move(component)}; |
| } |
| |
| ComponentV2::ComponentV2( |
| TerminationCallback termination_callback, |
| fuchsia::component::runner::ComponentStartInfo start_info, |
| std::shared_ptr<sys::ServiceDirectory> runner_incoming_services, |
| fidl::InterfaceRequest<fuchsia::component::runner::ComponentController> |
| component_controller_request) |
| : termination_callback_(std::move(termination_callback)), |
| debug_label_(DebugLabelForUrl(start_info.resolved_url())), |
| component_controller_(this), |
| outgoing_dir_(new vfs::PseudoDir()), |
| runtime_dir_(new vfs::PseudoDir()), |
| runner_incoming_services_(runner_incoming_services), |
| weak_factory_(this) { |
| component_controller_.set_error_handler([this](zx_status_t status) { |
| FML_LOG(ERROR) << "ComponentController binding error for component(" |
| << debug_label_ << "): " << zx_status_get_string(status); |
| KillWithEpitaph( |
| zx_status_t(fuchsia::component::Error::INSTANCE_CANNOT_START)); |
| }); |
| |
| FML_DCHECK(fdio_ns_.is_valid()); |
| |
| // TODO(fxb/50694): Dart launch arguments. |
| FML_LOG(WARNING) << "program() arguments are currently ignored (fxb/50694)."; |
| |
| // Determine where data and assets are stored within /pkg. |
| std::string data_path; |
| std::string assets_path; |
| ParseProgramMetadata(start_info.program(), &data_path, &assets_path); |
| |
| if (data_path.empty()) { |
| FML_DLOG(ERROR) << "Could not find a /pkg/data directory for " |
| << start_info.resolved_url(); |
| return; |
| } |
| |
| // Setup /tmp to be mapped to the process-local memfs. |
| dart_utils::RunnerTemp::SetupComponent(fdio_ns_.get()); |
| |
| // ComponentStartInfo::ns (optional) |
| if (start_info.has_ns()) { |
| for (auto& entry : *start_info.mutable_ns()) { |
| // /tmp/ is mapped separately to the process-level memfs, so we ignore it |
| // here. |
| const auto& path = entry.path(); |
| if (path == kTmpPath) { |
| continue; |
| } |
| |
| // We should never receive namespace entries without a directory, but we |
| // check it anyways to avoid crashing if we do. |
| if (!entry.has_directory()) { |
| FML_DLOG(ERROR) << "Namespace entry at path (" << path |
| << ") has no directory."; |
| continue; |
| } |
| |
| zx::channel dir; |
| if (path == kServiceRootPath) { |
| svc_ = std::make_unique<sys::ServiceDirectory>( |
| std::move(*entry.mutable_directory())); |
| dir = svc_->CloneChannel().TakeChannel(); |
| } else { |
| dir = entry.mutable_directory()->TakeChannel(); |
| } |
| |
| zx_handle_t dir_handle = dir.release(); |
| if (fdio_ns_bind(fdio_ns_.get(), path.data(), dir_handle) != ZX_OK) { |
| FML_DLOG(ERROR) << "Could not bind path to namespace: " << path; |
| zx_handle_close(dir_handle); |
| } |
| } |
| } |
| |
| // Open the data and assets directories inside our namespace. |
| { |
| fml::UniqueFD ns_fd(fdio_ns_opendir(fdio_ns_.get())); |
| FML_DCHECK(ns_fd.is_valid()); |
| |
| constexpr mode_t mode = O_RDONLY | O_DIRECTORY; |
| |
| component_assets_directory_.reset( |
| openat(ns_fd.get(), assets_path.c_str(), mode)); |
| FML_DCHECK(component_assets_directory_.is_valid()); |
| |
| component_data_directory_.reset( |
| openat(ns_fd.get(), data_path.c_str(), mode)); |
| FML_DCHECK(component_data_directory_.is_valid()); |
| } |
| |
| // ComponentStartInfo::runtime_dir (optional). |
| if (start_info.has_runtime_dir()) { |
| runtime_dir_->Serve(fuchsia::io::OPEN_RIGHT_READABLE | |
| fuchsia::io::OPEN_RIGHT_WRITABLE | |
| fuchsia::io::OPEN_FLAG_DIRECTORY, |
| start_info.mutable_runtime_dir()->TakeChannel()); |
| } |
| |
| // ComponentStartInfo::outgoing_dir (optional). |
| if (start_info.has_outgoing_dir()) { |
| outgoing_dir_->Serve(fuchsia::io::OPEN_RIGHT_READABLE | |
| fuchsia::io::OPEN_RIGHT_WRITABLE | |
| fuchsia::io::OPEN_FLAG_DIRECTORY, |
| start_info.mutable_outgoing_dir()->TakeChannel()); |
| } |
| |
| directory_request_ = directory_ptr_.NewRequest(); |
| |
| fidl::InterfaceHandle<fuchsia::io::Directory> flutter_public_dir; |
| // TODO(anmittal): when fixing enumeration using new c++ vfs, make sure that |
| // flutter_public_dir is only accessed once we receive OnOpen Event. |
| // That will prevent FL-175 for public directory |
| auto request = flutter_public_dir.NewRequest().TakeChannel(); |
| fdio_service_connect_at(directory_ptr_.channel().get(), "svc", |
| request.release()); |
| |
| auto composed_service_dir = std::make_unique<vfs::ComposedServiceDir>(); |
| composed_service_dir->set_fallback(std::move(flutter_public_dir)); |
| |
| // Clone and check if client is servicing the directory. |
| directory_ptr_->Clone(fuchsia::io::OPEN_FLAG_DESCRIBE | |
| fuchsia::io::OPEN_RIGHT_READABLE | |
| fuchsia::io::OPEN_RIGHT_WRITABLE, |
| cloned_directory_ptr_.NewRequest()); |
| |
| cloned_directory_ptr_.events().OnOpen = |
| [this](zx_status_t status, std::unique_ptr<fuchsia::io::NodeInfo> info) { |
| cloned_directory_ptr_.Unbind(); |
| if (status != ZX_OK) { |
| FML_LOG(ERROR) |
| << "could not bind out directory for flutter component(" |
| << debug_label_ << "): " << zx_status_get_string(status); |
| return; |
| } |
| const char* other_dirs[] = {"debug", "ctrl", "diagnostics"}; |
| // add other directories as RemoteDirs. |
| for (auto& dir_str : other_dirs) { |
| fidl::InterfaceHandle<fuchsia::io::Directory> dir; |
| auto request = dir.NewRequest().TakeChannel(); |
| auto status = fdio_service_connect_at(directory_ptr_.channel().get(), |
| dir_str, request.release()); |
| if (status == ZX_OK) { |
| outgoing_dir_->AddEntry( |
| dir_str, std::make_unique<vfs::RemoteDir>(dir.TakeChannel())); |
| } else { |
| FML_LOG(ERROR) << "could not add out directory entry(" << dir_str |
| << ") for flutter component(" << debug_label_ |
| << "): " << zx_status_get_string(status); |
| } |
| } |
| }; |
| |
| cloned_directory_ptr_.set_error_handler( |
| [this](zx_status_t status) { cloned_directory_ptr_.Unbind(); }); |
| |
| // TODO(fxb/50694): Close handles from ComponentStartInfo::numbered_handles |
| // since we're not using them. See documentation from ComponentController: |
| // https://cs.opensource.google/fuchsia/fuchsia/+/main:sdk/fidl/fuchsia.component.runner/component_runner.fidl;l=97;drc=e3b39f2b57e720770773b857feca4f770ee0619e |
| |
| // TODO(fxb/50694): There's an OnPublishDiagnostics event we may want to |
| // fire for diagnostics. See documentation from ComponentController: |
| // https://cs.opensource.google/fuchsia/fuchsia/+/main:sdk/fidl/fuchsia.component.runner/component_runner.fidl;l=181;drc=e3b39f2b57e720770773b857feca4f770ee0619e |
| |
| // All launch arguments have been read. Perform service binding and |
| // final settings configuration. The next call will be to create a view |
| // for this component. |
| composed_service_dir->AddService( |
| fuchsia::ui::app::ViewProvider::Name_, |
| std::make_unique<vfs::Service>( |
| [this](zx::channel channel, async_dispatcher_t* dispatcher) { |
| shells_bindings_.AddBinding( |
| this, fidl::InterfaceRequest<fuchsia::ui::app::ViewProvider>( |
| std::move(channel))); |
| })); |
| outgoing_dir_->AddEntry("svc", std::move(composed_service_dir)); |
| |
| // Setup the component controller binding. |
| if (component_controller_request) { |
| component_controller_.Bind(std::move(component_controller_request)); |
| } |
| |
| // Load and use runner-specific configuration, if it exists. |
| std::string json_string; |
| if (dart_utils::ReadFileToString(kRunnerConfigPath, &json_string)) { |
| product_config_ = FlutterRunnerProductConfiguration(json_string); |
| FML_LOG(INFO) << "Successfully loaded runner configuration: " |
| << json_string; |
| } else { |
| FML_LOG(WARNING) << "Failed to load runner configuration from " |
| << kRunnerConfigPath << "; using default config values."; |
| } |
| |
| // Load VM and component bytecode. |
| // For AOT, compare with flutter_aot_app in flutter_app.gni. |
| // For JIT, compare flutter_jit_runner in BUILD.gn. |
| if (flutter::DartVM::IsRunningPrecompiledCode()) { |
| std::shared_ptr<dart_utils::ElfSnapshot> snapshot = |
| std::make_shared<dart_utils::ElfSnapshot>(); |
| if (snapshot->Load(component_data_directory_.get(), |
| "app_aot_snapshot.so")) { |
| const uint8_t* isolate_data = snapshot->IsolateData(); |
| const uint8_t* isolate_instructions = snapshot->IsolateInstrs(); |
| const uint8_t* vm_data = snapshot->VmData(); |
| const uint8_t* vm_instructions = snapshot->VmInstrs(); |
| if (isolate_data == nullptr || isolate_instructions == nullptr || |
| vm_data == nullptr || vm_instructions == nullptr) { |
| FML_LOG(FATAL) << "ELF snapshot missing AOT symbols."; |
| return; |
| } |
| auto hold_snapshot = [snapshot](const uint8_t* _, size_t __) {}; |
| settings_.vm_snapshot_data = [hold_snapshot, vm_data]() { |
| return std::make_unique<fml::NonOwnedMapping>(vm_data, 0, |
| hold_snapshot); |
| }; |
| settings_.vm_snapshot_instr = [hold_snapshot, vm_instructions]() { |
| return std::make_unique<fml::NonOwnedMapping>(vm_instructions, 0, |
| hold_snapshot); |
| }; |
| settings_.isolate_snapshot_data = [hold_snapshot, isolate_data]() { |
| return std::make_unique<fml::NonOwnedMapping>(isolate_data, 0, |
| hold_snapshot); |
| }; |
| settings_.isolate_snapshot_instr = [hold_snapshot, |
| isolate_instructions]() { |
| return std::make_unique<fml::NonOwnedMapping>(isolate_instructions, 0, |
| hold_snapshot); |
| }; |
| isolate_snapshot_ = fml::MakeRefCounted<flutter::DartSnapshot>( |
| std::make_shared<fml::NonOwnedMapping>(isolate_data, 0, |
| hold_snapshot), |
| std::make_shared<fml::NonOwnedMapping>(isolate_instructions, 0, |
| hold_snapshot)); |
| } else { |
| const int namespace_fd = component_data_directory_.get(); |
| settings_.vm_snapshot_data = [namespace_fd]() { |
| return LoadFile(namespace_fd, "vm_snapshot_data.bin", |
| false /* executable */); |
| }; |
| settings_.vm_snapshot_instr = [namespace_fd]() { |
| return LoadFile(namespace_fd, "vm_snapshot_instructions.bin", |
| true /* executable */); |
| }; |
| settings_.isolate_snapshot_data = [namespace_fd]() { |
| return LoadFile(namespace_fd, "isolate_snapshot_data.bin", |
| false /* executable */); |
| }; |
| settings_.isolate_snapshot_instr = [namespace_fd]() { |
| return LoadFile(namespace_fd, "isolate_snapshot_instructions.bin", |
| true /* executable */); |
| }; |
| } |
| } else { |
| settings_.vm_snapshot_data = []() { |
| return MakeFileMapping("/pkg/data/vm_snapshot_data.bin", |
| false /* executable */); |
| }; |
| settings_.vm_snapshot_instr = []() { |
| return MakeFileMapping("/pkg/data/vm_snapshot_instructions.bin", |
| true /* executable */); |
| }; |
| |
| settings_.isolate_snapshot_data = []() { |
| return MakeFileMapping("/pkg/data/isolate_core_snapshot_data.bin", |
| false /* executable */); |
| }; |
| settings_.isolate_snapshot_instr = [] { |
| return MakeFileMapping("/pkg/data/isolate_core_snapshot_instructions.bin", |
| true /* executable */); |
| }; |
| } |
| |
| #if defined(DART_PRODUCT) |
| settings_.enable_observatory = false; |
| #else |
| settings_.enable_observatory = true; |
| |
| // TODO(cbracken): pass this in as a param to allow 0.0.0.0, ::1, etc. |
| settings_.observatory_host = "127.0.0.1"; |
| #endif |
| |
| // Controls whether category "skia" trace events are enabled. |
| settings_.trace_skia = true; |
| |
| settings_.verbose_logging = true; |
| |
| settings_.advisory_script_uri = debug_label_; |
| |
| settings_.advisory_script_entrypoint = debug_label_; |
| |
| settings_.icu_data_path = ""; |
| |
| settings_.assets_dir = component_assets_directory_.get(); |
| |
| // Compare flutter_jit_app in flutter_app.gni. |
| settings_.application_kernel_list_asset = "app.dilplist"; |
| |
| settings_.log_tag = debug_label_ + std::string{"(flutter)"}; |
| |
| // No asserts in debug or release product. |
| // No asserts in release with flutter_profile=true (non-product) |
| // Yes asserts in non-product debug. |
| #if !defined(DART_PRODUCT) && (!defined(FLUTTER_PROFILE) || !defined(NDEBUG)) |
| // Debug mode |
| settings_.disable_dart_asserts = false; |
| #else |
| // Release mode |
| settings_.disable_dart_asserts = true; |
| #endif |
| |
| // Do not leak the VM; allow it to shut down normally when the last shell |
| // terminates. |
| settings_.leak_vm = false; |
| |
| settings_.task_observer_add = |
| std::bind(&fml::CurrentMessageLoopAddAfterTaskObserver, |
| std::placeholders::_1, std::placeholders::_2); |
| |
| settings_.task_observer_remove = std::bind( |
| &fml::CurrentMessageLoopRemoveAfterTaskObserver, std::placeholders::_1); |
| |
| settings_.log_message_callback = [](const std::string& tag, |
| const std::string& message) { |
| if (tag.size() > 0) { |
| std::cout << tag << ": "; |
| } |
| std::cout << message << std::endl; |
| }; |
| |
| settings_.dart_flags = {"--lazy_async_stacks"}; |
| |
| // Don't collect CPU samples from Dart VM C++ code. |
| settings_.dart_flags.push_back("--no_profile_vm"); |
| |
| // Scale back CPU profiler sampling period on ARM64 to avoid overloading |
| // the tracing engine. |
| #if defined(__aarch64__) |
| settings_.dart_flags.push_back("--profile_period=10000"); |
| #endif // defined(__aarch64__) |
| |
| auto platform_task_runner = fml::MessageLoop::GetCurrent().GetTaskRunner(); |
| const std::string component_url = start_info.resolved_url(); |
| settings_.unhandled_exception_callback = [weak = weak_factory_.GetWeakPtr(), |
| platform_task_runner, |
| runner_incoming_services, |
| component_url]( |
| const std::string& error, |
| const std::string& stack_trace) { |
| if (weak) { |
| // TODO(cbracken): unsafe. The above check and the PostTask below are |
| // happening on the UI thread. If the Component dtor and thread |
| // termination happen (on the platform thread) between the previous |
| // line and the next line, a crash will occur since we'll be posting |
| // to a dead thread. See Runner::OnComponentV2Terminate() in |
| // runner.cc. |
| platform_task_runner->PostTask([weak, runner_incoming_services, |
| component_url, error, stack_trace]() { |
| if (weak) { |
| dart_utils::HandleException(runner_incoming_services, component_url, |
| error, stack_trace); |
| } else { |
| FML_LOG(WARNING) |
| << "Exception was thrown which was not caught in Flutter app: " |
| << error; |
| } |
| }); |
| } else { |
| FML_LOG(WARNING) |
| << "Exception was thrown which was not caught in Flutter app: " |
| << error; |
| } |
| // Ideally we would return whether HandleException returned ZX_OK, but |
| // short of knowing if the exception was correctly handled, we return |
| // false to have the error and stack trace printed in the logs. |
| return false; |
| }; |
| } |
| |
| ComponentV2::~ComponentV2() = default; |
| |
| const std::string& ComponentV2::GetDebugLabel() const { |
| return debug_label_; |
| } |
| |
| void ComponentV2::Kill() { |
| FML_VLOG(-1) << "ComponentController: received Kill"; |
| |
| // From the documentation for ComponentController, ZX_OK should be sent when |
| // the ComponentController receives a termination request. |
| // |
| // TODO(fxb/50694): How should we communicate the return code of the process |
| // with the epitaph? Should we avoid sending ZX_OK if the return code is not |
| // 0? |
| // |
| // CF v1 logic for reference (the OnTerminated event no longer exists): |
| // component_controller_.events().OnTerminated( |
| // last_return_code_.second, fuchsia::sys::TerminationReason::EXITED); |
| |
| KillWithEpitaph(ZX_OK); |
| |
| // WARNING: Don't do anything past this point as this instance may have been |
| // collected. |
| } |
| |
| void ComponentV2::KillWithEpitaph(zx_status_t epitaph_status) { |
| component_controller_.set_error_handler(nullptr); |
| component_controller_.Close(epitaph_status); |
| |
| termination_callback_(this); |
| // WARNING: Don't do anything past this point as this instance may have been |
| // collected. |
| } |
| |
| void ComponentV2::Stop() { |
| FML_VLOG(-1) << "ComponentController v2: received Stop"; |
| |
| // TODO(fxb/50694): Any other cleanup logic we should do that's appropriate |
| // for Stop but not for Kill? |
| KillWithEpitaph(ZX_OK); |
| } |
| |
| void ComponentV2::OnEngineTerminate(const Engine* shell_holder) { |
| auto found = std::find_if(shell_holders_.begin(), shell_holders_.end(), |
| [shell_holder](const auto& holder) { |
| return holder.get() == shell_holder; |
| }); |
| |
| if (found == shell_holders_.end()) { |
| return; |
| } |
| |
| // We may launch multiple shell in this component. However, we will |
| // terminate when the last shell goes away. The error code returned to the |
| // component controller will be the last isolate that had an error. |
| auto return_code = shell_holder->GetEngineReturnCode(); |
| if (return_code.has_value()) { |
| last_return_code_ = {true, return_code.value()}; |
| } |
| |
| shell_holders_.erase(found); |
| |
| if (shell_holders_.size() == 0) { |
| Kill(); |
| // WARNING: Don't do anything past this point because the delegate may have |
| // collected this instance via the termination callback. |
| } |
| } |
| |
| void ComponentV2::CreateView( |
| zx::eventpair token, |
| fidl::InterfaceRequest<fuchsia::sys::ServiceProvider> /*incoming_services*/, |
| fidl::InterfaceHandle< |
| fuchsia::sys::ServiceProvider> /*outgoing_services*/) { |
| auto view_ref_pair = scenic::ViewRefPair::New(); |
| CreateViewWithViewRef(std::move(token), std::move(view_ref_pair.control_ref), |
| std::move(view_ref_pair.view_ref)); |
| } |
| |
| void ComponentV2::CreateViewWithViewRef( |
| zx::eventpair view_token, |
| fuchsia::ui::views::ViewRefControl control_ref, |
| fuchsia::ui::views::ViewRef view_ref) { |
| if (!svc_) { |
| FML_DLOG(ERROR) |
| << "Component incoming services was invalid when attempting to " |
| "create a shell for a view provider request."; |
| return; |
| } |
| |
| shell_holders_.emplace(std::make_unique<Engine>( |
| *this, // delegate |
| debug_label_, // thread label |
| svc_, // Component incoming services |
| runner_incoming_services_, // Runner incoming services |
| settings_, // settings |
| scenic::ToViewToken(std::move(view_token)), // view token |
| scenic::ViewRefPair{ |
| .control_ref = std::move(control_ref), |
| .view_ref = std::move(view_ref), |
| }, |
| std::move(fdio_ns_), // FDIO namespace |
| std::move(directory_request_), // outgoing request |
| product_config_ // product configuration |
| )); |
| } |
| |
| void ComponentV2::CreateView2(fuchsia::ui::app::CreateView2Args view_args) { |
| if (!svc_) { |
| FML_DLOG(ERROR) |
| << "Component incoming services was invalid when attempting to " |
| "create a shell for a view provider request."; |
| return; |
| } |
| |
| shell_holders_.emplace(std::make_unique<Engine>( |
| *this, // delegate |
| debug_label_, // thread label |
| svc_, // Component incoming services |
| runner_incoming_services_, // Runner incoming services |
| settings_, // settings |
| std::move( |
| *view_args.mutable_view_creation_token()), // view creation token |
| scenic::ViewRefPair::New(), // view ref pair |
| std::move(fdio_ns_), // FDIO namespace |
| std::move(directory_request_), // outgoing request |
| product_config_ // product configuration |
| )); |
| } |
| |
| #if !defined(DART_PRODUCT) |
| void ComponentV2::WriteProfileToTrace() const { |
| for (const auto& engine : shell_holders_) { |
| engine->WriteProfileToTrace(); |
| } |
| } |
| #endif // !defined(DART_PRODUCT) |
| |
| } // namespace flutter_runner |
