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0d6ff1669c
The shell was already designed to cleanly shut down the VM but it couldnt earlier as |Dart_Initialize| could never be called after a |Dart_Cleanup|. This meant that shutting down an engine instance could not shut down the VM to save memory because newly created engines in the process after that point couldn't restart the VM. There can only be one VM running in a process at a time. This patch separate the previous DartVM object into one that references a running instance of the DartVM and a set of immutable dependencies that components can reference even as the VM is shutting down. Unit tests have been added to assert that non-overlapping engine launches use difference VM instances.
336 lines
11 KiB
C++
336 lines
11 KiB
C++
// Copyright 2013 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "flutter/runtime/runtime_controller.h"
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#include "flutter/fml/message_loop.h"
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#include "flutter/fml/trace_event.h"
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#include "flutter/lib/ui/compositing/scene.h"
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#include "flutter/lib/ui/ui_dart_state.h"
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#include "flutter/lib/ui/window/window.h"
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#include "flutter/runtime/runtime_delegate.h"
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#include "third_party/tonic/dart_message_handler.h"
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namespace blink {
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RuntimeController::RuntimeController(
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RuntimeDelegate& p_client,
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DartVM* p_vm,
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fml::RefPtr<const DartSnapshot> p_isolate_snapshot,
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fml::RefPtr<const DartSnapshot> p_shared_snapshot,
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TaskRunners p_task_runners,
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fml::WeakPtr<SnapshotDelegate> p_snapshot_delegate,
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fml::WeakPtr<IOManager> p_io_manager,
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std::string p_advisory_script_uri,
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std::string p_advisory_script_entrypoint,
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std::function<void(int64_t)> p_idle_notification_callback)
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: RuntimeController(p_client,
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p_vm,
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std::move(p_isolate_snapshot),
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std::move(p_shared_snapshot),
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std::move(p_task_runners),
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std::move(p_snapshot_delegate),
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std::move(p_io_manager),
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std::move(p_advisory_script_uri),
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std::move(p_advisory_script_entrypoint),
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p_idle_notification_callback,
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WindowData{/* default window data */}) {}
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RuntimeController::RuntimeController(
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RuntimeDelegate& p_client,
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DartVM* p_vm,
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fml::RefPtr<const DartSnapshot> p_isolate_snapshot,
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fml::RefPtr<const DartSnapshot> p_shared_snapshot,
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TaskRunners p_task_runners,
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fml::WeakPtr<SnapshotDelegate> p_snapshot_delegate,
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fml::WeakPtr<IOManager> p_io_manager,
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std::string p_advisory_script_uri,
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std::string p_advisory_script_entrypoint,
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std::function<void(int64_t)> idle_notification_callback,
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WindowData p_window_data)
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: client_(p_client),
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vm_(p_vm),
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isolate_snapshot_(std::move(p_isolate_snapshot)),
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shared_snapshot_(std::move(p_shared_snapshot)),
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task_runners_(p_task_runners),
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snapshot_delegate_(p_snapshot_delegate),
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io_manager_(p_io_manager),
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advisory_script_uri_(p_advisory_script_uri),
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advisory_script_entrypoint_(p_advisory_script_entrypoint),
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idle_notification_callback_(idle_notification_callback),
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window_data_(std::move(p_window_data)),
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root_isolate_(
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DartIsolate::CreateRootIsolate(vm_->GetVMData()->GetSettings(),
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isolate_snapshot_,
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shared_snapshot_,
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task_runners_,
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std::make_unique<Window>(this),
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snapshot_delegate_,
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io_manager_,
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p_advisory_script_uri,
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p_advisory_script_entrypoint)) {
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std::shared_ptr<DartIsolate> root_isolate = root_isolate_.lock();
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root_isolate->SetReturnCodeCallback([this](uint32_t code) {
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root_isolate_return_code_ = {true, code};
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});
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if (auto* window = GetWindowIfAvailable()) {
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tonic::DartState::Scope scope(root_isolate);
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window->DidCreateIsolate();
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if (!FlushRuntimeStateToIsolate()) {
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FML_DLOG(ERROR) << "Could not setup intial isolate state.";
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}
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} else {
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FML_DCHECK(false) << "RuntimeController created without window binding.";
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}
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FML_DCHECK(Dart_CurrentIsolate() == nullptr);
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}
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RuntimeController::~RuntimeController() {
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FML_DCHECK(Dart_CurrentIsolate() == nullptr);
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std::shared_ptr<DartIsolate> root_isolate = root_isolate_.lock();
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if (root_isolate) {
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root_isolate->SetReturnCodeCallback(nullptr);
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auto result = root_isolate->Shutdown();
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if (!result) {
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FML_DLOG(ERROR) << "Could not shutdown the root isolate.";
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}
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root_isolate_ = {};
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}
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}
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bool RuntimeController::IsRootIsolateRunning() const {
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std::shared_ptr<DartIsolate> root_isolate = root_isolate_.lock();
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if (root_isolate) {
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return root_isolate->GetPhase() == DartIsolate::Phase::Running;
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}
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return false;
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}
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std::unique_ptr<RuntimeController> RuntimeController::Clone() const {
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return std::unique_ptr<RuntimeController>(new RuntimeController(
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client_, //
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vm_, //
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isolate_snapshot_, //
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shared_snapshot_, //
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task_runners_, //
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snapshot_delegate_, //
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io_manager_, //
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advisory_script_uri_, //
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advisory_script_entrypoint_, //
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idle_notification_callback_, //
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window_data_ //
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));
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}
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bool RuntimeController::FlushRuntimeStateToIsolate() {
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return SetViewportMetrics(window_data_.viewport_metrics) &&
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SetLocales(window_data_.locale_data) &&
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SetSemanticsEnabled(window_data_.semantics_enabled) &&
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SetAccessibilityFeatures(window_data_.accessibility_feature_flags_) &&
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SetUserSettingsData(window_data_.user_settings_data);
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}
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bool RuntimeController::SetViewportMetrics(const ViewportMetrics& metrics) {
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window_data_.viewport_metrics = metrics;
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if (auto* window = GetWindowIfAvailable()) {
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window->UpdateWindowMetrics(metrics);
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return true;
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}
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return false;
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}
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bool RuntimeController::SetLocales(
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const std::vector<std::string>& locale_data) {
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window_data_.locale_data = locale_data;
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if (auto* window = GetWindowIfAvailable()) {
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window->UpdateLocales(locale_data);
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return true;
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}
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return false;
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}
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bool RuntimeController::SetUserSettingsData(const std::string& data) {
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window_data_.user_settings_data = data;
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if (auto* window = GetWindowIfAvailable()) {
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window->UpdateUserSettingsData(window_data_.user_settings_data);
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return true;
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}
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return false;
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}
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bool RuntimeController::SetSemanticsEnabled(bool enabled) {
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window_data_.semantics_enabled = enabled;
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if (auto* window = GetWindowIfAvailable()) {
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window->UpdateSemanticsEnabled(window_data_.semantics_enabled);
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return true;
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}
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return false;
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}
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bool RuntimeController::SetAccessibilityFeatures(int32_t flags) {
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window_data_.accessibility_feature_flags_ = flags;
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if (auto* window = GetWindowIfAvailable()) {
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window->UpdateAccessibilityFeatures(
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window_data_.accessibility_feature_flags_);
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return true;
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}
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return false;
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}
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bool RuntimeController::BeginFrame(fml::TimePoint frame_time) {
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if (auto* window = GetWindowIfAvailable()) {
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window->BeginFrame(frame_time);
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return true;
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}
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return false;
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}
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bool RuntimeController::NotifyIdle(int64_t deadline) {
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std::shared_ptr<DartIsolate> root_isolate = root_isolate_.lock();
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if (!root_isolate) {
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return false;
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}
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tonic::DartState::Scope scope(root_isolate);
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Dart_NotifyIdle(deadline);
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// Idle notifications being in isolate scope are part of the contract.
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if (idle_notification_callback_) {
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TRACE_EVENT0("flutter", "EmbedderIdleNotification");
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idle_notification_callback_(deadline);
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}
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return true;
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}
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bool RuntimeController::DispatchPlatformMessage(
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fml::RefPtr<PlatformMessage> message) {
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if (auto* window = GetWindowIfAvailable()) {
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TRACE_EVENT1("flutter", "RuntimeController::DispatchPlatformMessage",
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"mode", "basic");
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window->DispatchPlatformMessage(std::move(message));
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return true;
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}
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return false;
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}
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bool RuntimeController::DispatchPointerDataPacket(
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const PointerDataPacket& packet) {
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if (auto* window = GetWindowIfAvailable()) {
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TRACE_EVENT1("flutter", "RuntimeController::DispatchPointerDataPacket",
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"mode", "basic");
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window->DispatchPointerDataPacket(packet);
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return true;
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}
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return false;
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}
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bool RuntimeController::DispatchSemanticsAction(int32_t id,
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SemanticsAction action,
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std::vector<uint8_t> args) {
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TRACE_EVENT1("flutter", "RuntimeController::DispatchSemanticsAction", "mode",
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"basic");
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if (auto* window = GetWindowIfAvailable()) {
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window->DispatchSemanticsAction(id, action, std::move(args));
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return true;
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}
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return false;
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}
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Window* RuntimeController::GetWindowIfAvailable() {
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std::shared_ptr<DartIsolate> root_isolate = root_isolate_.lock();
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return root_isolate ? root_isolate->window() : nullptr;
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}
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std::string RuntimeController::DefaultRouteName() {
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return client_.DefaultRouteName();
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}
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void RuntimeController::ScheduleFrame() {
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client_.ScheduleFrame();
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}
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void RuntimeController::Render(Scene* scene) {
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client_.Render(scene->takeLayerTree());
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}
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void RuntimeController::UpdateSemantics(SemanticsUpdate* update) {
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if (window_data_.semantics_enabled) {
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client_.UpdateSemantics(update->takeNodes(), update->takeActions());
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}
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}
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void RuntimeController::HandlePlatformMessage(
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fml::RefPtr<PlatformMessage> message) {
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client_.HandlePlatformMessage(std::move(message));
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}
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FontCollection& RuntimeController::GetFontCollection() {
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return client_.GetFontCollection();
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}
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void RuntimeController::UpdateIsolateDescription(const std::string isolate_name,
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int64_t isolate_port) {
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client_.UpdateIsolateDescription(isolate_name, isolate_port);
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}
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Dart_Port RuntimeController::GetMainPort() {
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std::shared_ptr<DartIsolate> root_isolate = root_isolate_.lock();
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return root_isolate ? root_isolate->main_port() : ILLEGAL_PORT;
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}
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std::string RuntimeController::GetIsolateName() {
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std::shared_ptr<DartIsolate> root_isolate = root_isolate_.lock();
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return root_isolate ? root_isolate->debug_name() : "";
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}
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bool RuntimeController::HasLivePorts() {
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std::shared_ptr<DartIsolate> root_isolate = root_isolate_.lock();
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if (!root_isolate) {
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return false;
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}
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tonic::DartState::Scope scope(root_isolate);
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return Dart_HasLivePorts();
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}
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tonic::DartErrorHandleType RuntimeController::GetLastError() {
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std::shared_ptr<DartIsolate> root_isolate = root_isolate_.lock();
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return root_isolate ? root_isolate->GetLastError() : tonic::kNoError;
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}
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std::weak_ptr<DartIsolate> RuntimeController::GetRootIsolate() {
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return root_isolate_;
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}
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std::pair<bool, uint32_t> RuntimeController::GetRootIsolateReturnCode() {
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return root_isolate_return_code_;
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}
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RuntimeController::Locale::Locale(std::string language_code_,
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std::string country_code_,
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std::string script_code_,
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std::string variant_code_)
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: language_code(language_code_),
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country_code(country_code_),
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script_code(script_code_),
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variant_code(variant_code_) {}
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RuntimeController::Locale::~Locale() = default;
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RuntimeController::WindowData::WindowData() = default;
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RuntimeController::WindowData::WindowData(const WindowData& other) = default;
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RuntimeController::WindowData::~WindowData() = default;
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} // namespace blink
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