| // Copyright 2015 The Chromium 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 "third_party/blink/renderer/platform/scheduler/main_thread/frame_scheduler_impl.h" |
| |
| #include <memory> |
| |
| #include "base/metrics/field_trial_params.h" |
| #include "base/metrics/histogram_functions.h" |
| #include "base/metrics/histogram_macros.h" |
| #include "base/task/common/scoped_defer_task_posting.h" |
| #include "base/task/common/task_annotator.h" |
| #include "base/task/sequence_manager/lazy_now.h" |
| #include "base/time/time.h" |
| #include "base/trace_event/blame_context.h" |
| #include "components/power_scheduler/power_mode.h" |
| #include "components/power_scheduler/power_mode_arbiter.h" |
| #include "components/power_scheduler/power_mode_voter.h" |
| #include "third_party/blink/public/common/features.h" |
| #include "third_party/blink/public/common/scheduler/web_scheduler_tracked_feature.h" |
| #include "third_party/blink/public/platform/blame_context.h" |
| #include "third_party/blink/public/platform/web_string.h" |
| #include "third_party/blink/renderer/platform/back_forward_cache_utils.h" |
| #include "third_party/blink/renderer/platform/runtime_enabled_features.h" |
| #include "third_party/blink/renderer/platform/scheduler/common/features.h" |
| #include "third_party/blink/renderer/platform/scheduler/common/throttling/budget_pool.h" |
| #include "third_party/blink/renderer/platform/scheduler/common/tracing_helper.h" |
| #include "third_party/blink/renderer/platform/scheduler/main_thread/auto_advancing_virtual_time_domain.h" |
| #include "third_party/blink/renderer/platform/scheduler/main_thread/find_in_page_budget_pool_controller.h" |
| #include "third_party/blink/renderer/platform/scheduler/main_thread/main_thread_scheduler_impl.h" |
| #include "third_party/blink/renderer/platform/scheduler/main_thread/page_scheduler_impl.h" |
| #include "third_party/blink/renderer/platform/scheduler/main_thread/page_visibility_state.h" |
| #include "third_party/blink/renderer/platform/scheduler/main_thread/resource_loading_task_runner_handle_impl.h" |
| #include "third_party/blink/renderer/platform/scheduler/main_thread/task_type_names.h" |
| #include "third_party/blink/renderer/platform/scheduler/main_thread/web_scheduling_task_queue_impl.h" |
| #include "third_party/blink/renderer/platform/scheduler/worker/worker_scheduler_proxy.h" |
| #include "third_party/perfetto/include/perfetto/tracing/traced_value.h" |
| |
| namespace blink { |
| |
| namespace scheduler { |
| |
| using base::sequence_manager::TaskQueue; |
| using QueueTraits = MainThreadTaskQueue::QueueTraits; |
| |
| namespace { |
| |
| const char* VisibilityStateToString(bool is_visible) { |
| if (is_visible) { |
| return "visible"; |
| } else { |
| return "hidden"; |
| } |
| } |
| |
| const char* PausedStateToString(bool is_paused) { |
| if (is_paused) { |
| return "paused"; |
| } else { |
| return "running"; |
| } |
| } |
| |
| const char* FrozenStateToString(bool is_frozen) { |
| if (is_frozen) { |
| return "frozen"; |
| } else { |
| return "running"; |
| } |
| } |
| |
| const char* KeepActiveStateToString(bool keep_active) { |
| if (keep_active) { |
| return "keep_active"; |
| } else { |
| return "no_keep_active"; |
| } |
| } |
| |
| // Used to update the priority of task_queue. Note that this function is |
| // used for queues associated with a frame. |
| void UpdatePriority(MainThreadTaskQueue* task_queue) { |
| if (!task_queue) |
| return; |
| |
| FrameSchedulerImpl* frame_scheduler = task_queue->GetFrameScheduler(); |
| DCHECK(frame_scheduler); |
| task_queue->GetTaskQueue()->SetQueuePriority( |
| frame_scheduler->ComputePriority(task_queue)); |
| } |
| |
| } // namespace |
| |
| FrameSchedulerImpl::PauseSubresourceLoadingHandleImpl:: |
| PauseSubresourceLoadingHandleImpl( |
| base::WeakPtr<FrameSchedulerImpl> frame_scheduler) |
| : frame_scheduler_(std::move(frame_scheduler)) { |
| DCHECK(frame_scheduler_); |
| frame_scheduler_->AddPauseSubresourceLoadingHandle(); |
| } |
| |
| FrameSchedulerImpl::PauseSubresourceLoadingHandleImpl:: |
| ~PauseSubresourceLoadingHandleImpl() { |
| if (frame_scheduler_) |
| frame_scheduler_->RemovePauseSubresourceLoadingHandle(); |
| } |
| |
| FrameSchedulerImpl::FrameSchedulerImpl( |
| PageSchedulerImpl* parent_page_scheduler, |
| FrameScheduler::Delegate* delegate, |
| base::trace_event::BlameContext* blame_context, |
| FrameScheduler::FrameType frame_type) |
| : FrameSchedulerImpl(parent_page_scheduler->GetMainThreadScheduler(), |
| parent_page_scheduler, |
| delegate, |
| blame_context, |
| frame_type) {} |
| |
| FrameSchedulerImpl::FrameSchedulerImpl( |
| MainThreadSchedulerImpl* main_thread_scheduler, |
| PageSchedulerImpl* parent_page_scheduler, |
| FrameScheduler::Delegate* delegate, |
| base::trace_event::BlameContext* blame_context, |
| FrameScheduler::FrameType frame_type) |
| : frame_type_(frame_type), |
| is_ad_frame_(false), |
| main_thread_scheduler_(main_thread_scheduler), |
| parent_page_scheduler_(parent_page_scheduler), |
| delegate_(delegate), |
| blame_context_(blame_context), |
| throttling_state_(SchedulingLifecycleState::kNotThrottled), |
| frame_visible_(true, |
| "FrameScheduler.FrameVisible", |
| &tracing_controller_, |
| VisibilityStateToString), |
| frame_paused_(false, |
| "FrameScheduler.FramePaused", |
| &tracing_controller_, |
| PausedStateToString), |
| frame_origin_type_(frame_type == FrameType::kMainFrame |
| ? FrameOriginType::kMainFrame |
| : FrameOriginType::kSameOriginToMainFrame, |
| "FrameScheduler.Origin", |
| &tracing_controller_, |
| FrameOriginTypeToString), |
| subresource_loading_paused_(false, |
| "FrameScheduler.SubResourceLoadingPaused", |
| &tracing_controller_, |
| PausedStateToString), |
| url_tracer_("FrameScheduler.URL"), |
| task_queues_throttled_(false, |
| "FrameScheduler.TaskQueuesThrottled", |
| &tracing_controller_, |
| YesNoStateToString), |
| preempted_for_cooperative_scheduling_( |
| false, |
| "FrameScheduler.PreemptedForCooperativeScheduling", |
| &tracing_controller_, |
| YesNoStateToString), |
| aggressive_throttling_opt_out_count_(0), |
| opted_out_from_aggressive_throttling_( |
| false, |
| "FrameScheduler.AggressiveThrottlingDisabled", |
| &tracing_controller_, |
| YesNoStateToString), |
| subresource_loading_pause_count_(0u), |
| opted_out_from_back_forward_cache_( |
| false, |
| "FrameScheduler.OptedOutFromBackForwardCache", |
| &tracing_controller_, |
| YesNoStateToString), |
| page_frozen_for_tracing_( |
| parent_page_scheduler_ ? parent_page_scheduler_->IsFrozen() : true, |
| "FrameScheduler.PageFrozen", |
| &tracing_controller_, |
| FrozenStateToString), |
| page_visibility_for_tracing_( |
| parent_page_scheduler_ && parent_page_scheduler_->IsPageVisible() |
| ? PageVisibilityState::kVisible |
| : PageVisibilityState::kHidden, |
| "FrameScheduler.PageVisibility", |
| &tracing_controller_, |
| PageVisibilityStateToString), |
| page_keep_active_for_tracing_( |
| parent_page_scheduler_ ? parent_page_scheduler_->KeepActive() : false, |
| "FrameScheduler.KeepActive", |
| &tracing_controller_, |
| KeepActiveStateToString), |
| waiting_for_contentful_paint_(true, |
| "FrameScheduler.WaitingForContentfulPaint", |
| &tracing_controller_, |
| YesNoStateToString), |
| waiting_for_meaningful_paint_(true, |
| "FrameScheduler.WaitingForMeaningfulPaint", |
| &tracing_controller_, |
| YesNoStateToString), |
| loading_power_mode_voter_( |
| power_scheduler::PowerModeArbiter::GetInstance()->NewVoter( |
| "PowerModeVoter.Loading")) { |
| frame_task_queue_controller_.reset( |
| new FrameTaskQueueController(main_thread_scheduler_, this, this)); |
| } |
| |
| FrameSchedulerImpl::FrameSchedulerImpl() |
| : FrameSchedulerImpl(/*main_thread_scheduler=*/nullptr, |
| /*parent_page_scheduler=*/nullptr, |
| /*delegate=*/nullptr, |
| /*blame_context=*/nullptr, |
| FrameType::kSubframe) {} |
| |
| namespace { |
| |
| void CleanUpQueue(MainThreadTaskQueue* queue) { |
| DCHECK(queue); |
| |
| queue->DetachFromMainThreadScheduler(); |
| DCHECK(!queue->GetFrameScheduler()); |
| queue->GetTaskQueue()->SetBlameContext(nullptr); |
| } |
| |
| } // namespace |
| |
| FrameSchedulerImpl::~FrameSchedulerImpl() { |
| weak_factory_.InvalidateWeakPtrs(); |
| |
| for (const auto& task_queue_and_voter : |
| frame_task_queue_controller_->GetAllTaskQueuesAndVoters()) { |
| if (task_queue_and_voter.first->CanBeThrottled()) { |
| RemoveThrottleableQueueFromBudgetPools(task_queue_and_voter.first); |
| } |
| CleanUpQueue(task_queue_and_voter.first); |
| } |
| |
| if (parent_page_scheduler_) { |
| parent_page_scheduler_->Unregister(this); |
| |
| if (opted_out_from_aggressive_throttling()) |
| parent_page_scheduler_->OnThrottlingStatusUpdated(); |
| } |
| } |
| |
| void FrameSchedulerImpl::DetachFromPageScheduler() { |
| for (const auto& task_queue_and_voter : |
| frame_task_queue_controller_->GetAllTaskQueuesAndVoters()) { |
| if (task_queue_and_voter.first->CanBeThrottled()) { |
| RemoveThrottleableQueueFromBudgetPools(task_queue_and_voter.first); |
| } |
| } |
| |
| parent_page_scheduler_ = nullptr; |
| } |
| |
| void FrameSchedulerImpl::RemoveThrottleableQueueFromBudgetPools( |
| MainThreadTaskQueue* task_queue) { |
| DCHECK(task_queue); |
| DCHECK(task_queue->CanBeThrottled()); |
| |
| if (!parent_page_scheduler_) |
| return; |
| |
| CPUTimeBudgetPool* cpu_time_budget_pool = |
| parent_page_scheduler_->background_cpu_time_budget_pool(); |
| |
| // On tests, the scheduler helper might already be shut down and tick is not |
| // available. |
| base::sequence_manager::LazyNow lazy_now = |
| main_thread_scheduler_->tick_clock() |
| ? base::sequence_manager::LazyNow( |
| main_thread_scheduler_->tick_clock()) |
| : base::sequence_manager::LazyNow(base::TimeTicks::Now()); |
| |
| if (cpu_time_budget_pool) { |
| cpu_time_budget_pool->RemoveQueue(lazy_now.Now(), |
| task_queue->GetTaskQueue()); |
| } |
| |
| parent_page_scheduler_->RemoveQueueFromWakeUpBudgetPool( |
| task_queue, frame_origin_type_, &lazy_now); |
| } |
| |
| void FrameSchedulerImpl::SetFrameVisible(bool frame_visible) { |
| DCHECK(parent_page_scheduler_); |
| if (frame_visible_ == frame_visible) |
| return; |
| UMA_HISTOGRAM_BOOLEAN("RendererScheduler.IPC.FrameVisibility", frame_visible); |
| frame_visible_ = frame_visible; |
| UpdatePolicy(); |
| } |
| |
| bool FrameSchedulerImpl::IsFrameVisible() const { |
| return frame_visible_; |
| } |
| |
| void FrameSchedulerImpl::SetCrossOriginToMainFrame(bool cross_origin) { |
| DCHECK(parent_page_scheduler_); |
| if (frame_origin_type_ == FrameOriginType::kMainFrame) { |
| DCHECK(!cross_origin); |
| return; |
| } |
| |
| base::sequence_manager::LazyNow lazy_now( |
| main_thread_scheduler_->tick_clock()); |
| |
| // Remove throttleable TaskQueues from their current WakeUpBudgetPool. |
| // |
| // The WakeUpBudgetPool is selected based on origin. TaskQueues are reinserted |
| // in the appropriate WakeUpBudgetPool at the end of this method, after the |
| // |frame_origin_type_| is updated. |
| for (const auto& task_queue_and_voter : |
| frame_task_queue_controller_->GetAllTaskQueuesAndVoters()) { |
| if (task_queue_and_voter.first->CanBeThrottled()) { |
| parent_page_scheduler_->RemoveQueueFromWakeUpBudgetPool( |
| task_queue_and_voter.first, frame_origin_type_, &lazy_now); |
| } |
| } |
| |
| // Update the FrameOriginType. |
| if (cross_origin) { |
| frame_origin_type_ = FrameOriginType::kCrossOriginToMainFrame; |
| } else { |
| frame_origin_type_ = FrameOriginType::kSameOriginToMainFrame; |
| } |
| |
| // Add throttleable TaskQueues to WakeUpBudgetPool that corresponds to the |
| // updated |frame_origin_type_|. |
| for (const auto& task_queue_and_voter : |
| frame_task_queue_controller_->GetAllTaskQueuesAndVoters()) { |
| if (task_queue_and_voter.first->CanBeThrottled()) { |
| parent_page_scheduler_->AddQueueToWakeUpBudgetPool( |
| task_queue_and_voter.first, frame_origin_type_, &lazy_now); |
| } |
| } |
| |
| UpdatePolicy(); |
| } |
| |
| void FrameSchedulerImpl::SetIsAdFrame() { |
| is_ad_frame_ = true; |
| UpdatePolicy(); |
| } |
| |
| bool FrameSchedulerImpl::IsAdFrame() const { |
| return is_ad_frame_; |
| } |
| |
| bool FrameSchedulerImpl::IsCrossOriginToMainFrame() const { |
| return frame_origin_type_ == FrameOriginType::kCrossOriginToMainFrame; |
| } |
| |
| void FrameSchedulerImpl::TraceUrlChange(const String& url) { |
| url_tracer_.TraceString(url); |
| } |
| |
| void FrameSchedulerImpl::AddTaskTime(base::TimeDelta time) { |
| // The duration of task time under which AddTaskTime buffers rather than |
| // sending the task time update to the delegate. |
| constexpr base::TimeDelta kTaskDurationSendThreshold = |
| base::TimeDelta::FromMilliseconds(100); |
| if (!delegate_) |
| return; |
| task_time_ += time; |
| if (task_time_ >= kTaskDurationSendThreshold) { |
| delegate_->UpdateTaskTime(task_time_); |
| task_time_ = base::TimeDelta(); |
| } |
| } |
| |
| FrameScheduler::FrameType FrameSchedulerImpl::GetFrameType() const { |
| return frame_type_; |
| } |
| |
| // static |
| QueueTraits FrameSchedulerImpl::CreateQueueTraitsForTaskType(TaskType type) { |
| // TODO(haraken): Optimize the mapping from TaskTypes to task runners. |
| // TODO(sreejakshetty): Clean up the PrioritisationType QueueTrait and |
| // QueueType for kInternalContinueScriptLoading and kInternalContentCapture. |
| switch (type) { |
| case TaskType::kInternalContentCapture: |
| return ThrottleableTaskQueueTraits().SetPrioritisationType( |
| QueueTraits::PrioritisationType::kBestEffort); |
| case TaskType::kJavascriptTimerDelayedLowNesting: |
| return ThrottleableTaskQueueTraits() |
| .SetPrioritisationType( |
| QueueTraits::PrioritisationType::kJavaScriptTimer) |
| .SetCanBeIntensivelyThrottled( |
| IsIntensiveWakeUpThrottlingEnabled() && |
| CanIntensivelyThrottleLowNestingLevel()); |
| case TaskType::kJavascriptTimerDelayedHighNesting: |
| return ThrottleableTaskQueueTraits() |
| .SetPrioritisationType( |
| QueueTraits::PrioritisationType::kJavaScriptTimer) |
| .SetCanBeIntensivelyThrottled(IsIntensiveWakeUpThrottlingEnabled()); |
| case TaskType::kJavascriptTimerImmediate: { |
| // Immediate timers are not throttled. |
| return DeferrableTaskQueueTraits().SetPrioritisationType( |
| QueueTraits::PrioritisationType::kJavaScriptTimer); |
| } |
| case TaskType::kInternalLoading: |
| case TaskType::kNetworking: |
| case TaskType::kNetworkingWithURLLoaderAnnotation: |
| return LoadingTaskQueueTraits(); |
| case TaskType::kNetworkingUnfreezable: |
| return IsInflightNetworkRequestBackForwardCacheSupportEnabled() |
| ? UnfreezableLoadingTaskQueueTraits() |
| : LoadingTaskQueueTraits(); |
| case TaskType::kNetworkingControl: |
| return LoadingControlTaskQueueTraits(); |
| // Throttling following tasks may break existing web pages, so tentatively |
| // these are unthrottled. |
| // TODO(nhiroki): Throttle them again after we're convinced that it's safe |
| // or provide a mechanism that web pages can opt-out it if throttling is not |
| // desirable. |
| case TaskType::kDOMManipulation: |
| case TaskType::kHistoryTraversal: |
| case TaskType::kEmbed: |
| case TaskType::kCanvasBlobSerialization: |
| case TaskType::kRemoteEvent: |
| case TaskType::kWebSocket: |
| case TaskType::kMicrotask: |
| case TaskType::kUnshippedPortMessage: |
| case TaskType::kFileReading: |
| case TaskType::kPresentation: |
| case TaskType::kSensor: |
| case TaskType::kPerformanceTimeline: |
| case TaskType::kWebGL: |
| case TaskType::kIdleTask: |
| case TaskType::kInternalDefault: |
| case TaskType::kMiscPlatformAPI: |
| case TaskType::kFontLoading: |
| case TaskType::kApplicationLifeCycle: |
| case TaskType::kBackgroundFetch: |
| case TaskType::kPermission: |
| case TaskType::kWakeLock: |
| // TODO(altimin): Move appropriate tasks to throttleable task queue. |
| return DeferrableTaskQueueTraits(); |
| // PostedMessage can be used for navigation, so we shouldn't defer it |
| // when expecting a user gesture. |
| case TaskType::kPostedMessage: |
| case TaskType::kServiceWorkerClientMessage: |
| case TaskType::kWorkerAnimation: |
| // UserInteraction tasks should be run even when expecting a user gesture. |
| case TaskType::kUserInteraction: |
| // Media events should not be deferred to ensure that media playback is |
| // smooth. |
| case TaskType::kMediaElementEvent: |
| case TaskType::kInternalWebCrypto: |
| case TaskType::kInternalMedia: |
| case TaskType::kInternalMediaRealTime: |
| case TaskType::kInternalUserInteraction: |
| case TaskType::kInternalIntersectionObserver: |
| return PausableTaskQueueTraits(); |
| case TaskType::kInternalFindInPage: |
| return FindInPageTaskQueueTraits(); |
| case TaskType::kInternalHighPriorityLocalFrame: |
| return QueueTraits().SetPrioritisationType( |
| QueueTraits::PrioritisationType::kHighPriorityLocalFrame); |
| case TaskType::kInternalContinueScriptLoading: |
| return PausableTaskQueueTraits().SetPrioritisationType( |
| QueueTraits::PrioritisationType::kInternalScriptContinuation); |
| case TaskType::kDatabaseAccess: |
| if (base::FeatureList::IsEnabled(kHighPriorityDatabaseTaskType)) { |
| return PausableTaskQueueTraits().SetPrioritisationType( |
| QueueTraits::PrioritisationType::kExperimentalDatabase); |
| } else { |
| return PausableTaskQueueTraits(); |
| } |
| case TaskType::kInternalNavigationAssociated: |
| return FreezableTaskQueueTraits(); |
| // Some tasks in the tests need to run when objects are paused e.g. to hook |
| // when recovering from debugger JavaScript statetment. |
| case TaskType::kInternalTest: |
| // kWebLocks can be frozen if for entire page, but not for individual |
| // frames. See https://crrev.com/c/1687716 |
| case TaskType::kWebLocks: |
| case TaskType::kInternalFrameLifecycleControl: |
| return UnpausableTaskQueueTraits(); |
| case TaskType::kInternalTranslation: |
| return ForegroundOnlyTaskQueueTraits(); |
| // The TaskType of Inspector tasks need to be unpausable and should not use |
| // virtual time because they need to run on a paused page or when virtual |
| // time is paused. |
| case TaskType::kInternalInspector: |
| // Navigation IPCs do not run using virtual time to avoid hanging. |
| case TaskType::kInternalNavigationAssociatedUnfreezable: |
| return DoesNotUseVirtualTimeTaskQueueTraits(); |
| case TaskType::kDeprecatedNone: |
| case TaskType::kMainThreadTaskQueueV8: |
| case TaskType::kMainThreadTaskQueueCompositor: |
| case TaskType::kMainThreadTaskQueueDefault: |
| case TaskType::kMainThreadTaskQueueInput: |
| case TaskType::kMainThreadTaskQueueIdle: |
| case TaskType::kMainThreadTaskQueueControl: |
| case TaskType::kMainThreadTaskQueueMemoryPurge: |
| case TaskType::kMainThreadTaskQueueIPCTracking: |
| case TaskType::kCompositorThreadTaskQueueDefault: |
| case TaskType::kCompositorThreadTaskQueueInput: |
| case TaskType::kWorkerThreadTaskQueueDefault: |
| case TaskType::kWorkerThreadTaskQueueV8: |
| case TaskType::kWorkerThreadTaskQueueCompositor: |
| case TaskType::kMainThreadTaskQueueNonWaking: |
| // The web scheduling API task types are used by WebSchedulingTaskQueues. |
| // The associated TaskRunner should be obtained by creating a |
| // WebSchedulingTaskQueue with CreateWebSchedulingTaskQueue(). |
| case TaskType::kExperimentalWebScheduling: |
| case TaskType::kCount: |
| // Not a valid frame-level TaskType. |
| NOTREACHED(); |
| return QueueTraits(); |
| } |
| // This method is called for all values between 0 and kCount. TaskType, |
| // however, has numbering gaps, so even though all enumerated TaskTypes are |
| // handled in the switch and return a value, we fall through for some values |
| // of |type|. |
| NOTREACHED(); |
| return QueueTraits(); |
| } |
| |
| scoped_refptr<base::SingleThreadTaskRunner> FrameSchedulerImpl::GetTaskRunner( |
| TaskType type) { |
| scoped_refptr<MainThreadTaskQueue> task_queue = GetTaskQueue(type); |
| DCHECK(task_queue); |
| return task_queue->CreateTaskRunner(type); |
| } |
| |
| scoped_refptr<MainThreadTaskQueue> FrameSchedulerImpl::GetTaskQueue( |
| TaskType type) { |
| QueueTraits queue_traits = CreateQueueTraitsForTaskType(type); |
| return frame_task_queue_controller_->GetTaskQueue(queue_traits); |
| } |
| |
| std::unique_ptr<WebResourceLoadingTaskRunnerHandle> |
| FrameSchedulerImpl::CreateResourceLoadingTaskRunnerHandle() { |
| return CreateResourceLoadingTaskRunnerHandleImpl(); |
| } |
| |
| std::unique_ptr<WebResourceLoadingTaskRunnerHandle> |
| FrameSchedulerImpl::CreateResourceLoadingMaybeUnfreezableTaskRunnerHandle() { |
| return ResourceLoadingTaskRunnerHandleImpl::WrapTaskRunner( |
| GetTaskQueue(TaskType::kNetworkingUnfreezable)); |
| } |
| |
| std::unique_ptr<ResourceLoadingTaskRunnerHandleImpl> |
| FrameSchedulerImpl::CreateResourceLoadingTaskRunnerHandleImpl() { |
| if (main_thread_scheduler_->scheduling_settings() |
| .use_resource_fetch_priority || |
| (parent_page_scheduler_ && parent_page_scheduler_->IsLoading() && |
| main_thread_scheduler_->scheduling_settings() |
| .use_resource_priorities_only_during_loading)) { |
| scoped_refptr<MainThreadTaskQueue> task_queue = |
| frame_task_queue_controller_->NewResourceLoadingTaskQueue(); |
| resource_loading_task_queue_priorities_.insert( |
| task_queue, task_queue->GetTaskQueue()->GetQueuePriority()); |
| return ResourceLoadingTaskRunnerHandleImpl::WrapTaskRunner(task_queue); |
| } |
| |
| return ResourceLoadingTaskRunnerHandleImpl::WrapTaskRunner( |
| GetTaskQueue(TaskType::kNetworkingWithURLLoaderAnnotation)); |
| } |
| |
| void FrameSchedulerImpl::DidChangeResourceLoadingPriority( |
| scoped_refptr<MainThreadTaskQueue> task_queue, |
| net::RequestPriority priority) { |
| // This check is done since in some cases (when kUseResourceFetchPriority |
| // feature isn't enabled) we use the loading task queue for resource loading |
| // and the priority of this queue shouldn't be affected by resource |
| // priorities. |
| auto queue_priority_pair = |
| resource_loading_task_queue_priorities_.find(task_queue); |
| if (queue_priority_pair != resource_loading_task_queue_priorities_.end()) { |
| task_queue->SetNetRequestPriority(priority); |
| queue_priority_pair->value = main_thread_scheduler_->scheduling_settings() |
| .net_to_blink_priority[priority]; |
| auto* voter = |
| frame_task_queue_controller_->GetQueueEnabledVoter(task_queue); |
| UpdateQueuePolicy(task_queue.get(), voter); |
| } |
| } |
| |
| void FrameSchedulerImpl::OnShutdownResourceLoadingTaskQueue( |
| scoped_refptr<MainThreadTaskQueue> task_queue) { |
| // This check is done since in some cases (when kUseResourceFetchPriority |
| // feature isn't enabled) we use the loading task queue for resource loading, |
| // and the lifetime of this queue isn't bound to one resource. |
| auto iter = resource_loading_task_queue_priorities_.find(task_queue); |
| if (iter != resource_loading_task_queue_priorities_.end()) { |
| resource_loading_task_queue_priorities_.erase(iter); |
| bool removed = frame_task_queue_controller_->RemoveResourceLoadingTaskQueue( |
| task_queue); |
| DCHECK(removed); |
| CleanUpQueue(task_queue.get()); |
| } |
| } |
| |
| scoped_refptr<base::SingleThreadTaskRunner> |
| FrameSchedulerImpl::ControlTaskRunner() { |
| DCHECK(parent_page_scheduler_); |
| return main_thread_scheduler_->ControlTaskRunner(); |
| } |
| |
| WebAgentGroupScheduler* FrameSchedulerImpl::GetAgentGroupScheduler() { |
| return parent_page_scheduler_ |
| ? &parent_page_scheduler_->GetAgentGroupScheduler() |
| : nullptr; |
| } |
| |
| blink::PageScheduler* FrameSchedulerImpl::GetPageScheduler() const { |
| return parent_page_scheduler_; |
| } |
| |
| void FrameSchedulerImpl::DidStartProvisionalLoad(bool is_main_frame) { |
| main_thread_scheduler_->DidStartProvisionalLoad(is_main_frame); |
| } |
| |
| void FrameSchedulerImpl::DidCommitProvisionalLoad( |
| bool is_web_history_inert_commit, |
| NavigationType navigation_type) { |
| bool is_main_frame = GetFrameType() == FrameType::kMainFrame; |
| bool is_same_document = navigation_type == NavigationType::kSameDocument; |
| |
| if (!is_same_document) { |
| loading_power_mode_voter_->VoteFor(power_scheduler::PowerMode::kLoading); |
| loading_power_mode_voter_->ResetVoteAfterTimeout( |
| power_scheduler::PowerModeVoter::kLoadingTimeout); |
| |
| waiting_for_contentful_paint_ = true; |
| waiting_for_meaningful_paint_ = true; |
| } |
| |
| if (is_main_frame && !is_same_document) { |
| task_time_ = base::TimeDelta(); |
| // Ignore result here, based on the assumption that |
| // MTSI::DidCommitProvisionalLoad will trigger an update policy. |
| ignore_result(main_thread_scheduler_->agent_scheduling_strategy() |
| .OnDocumentChangedInMainFrame(*this)); |
| } |
| |
| main_thread_scheduler_->DidCommitProvisionalLoad( |
| is_web_history_inert_commit, navigation_type == NavigationType::kReload, |
| is_main_frame); |
| if (!is_same_document) |
| ResetForNavigation(); |
| } |
| |
| WebScopedVirtualTimePauser FrameSchedulerImpl::CreateWebScopedVirtualTimePauser( |
| const WTF::String& name, |
| WebScopedVirtualTimePauser::VirtualTaskDuration duration) { |
| return WebScopedVirtualTimePauser(main_thread_scheduler_, duration, name); |
| } |
| |
| void FrameSchedulerImpl::ResetForNavigation() { |
| document_bound_weak_factory_.InvalidateWeakPtrs(); |
| |
| for (const auto& it : back_forward_cache_opt_out_counts_) { |
| TRACE_EVENT_NESTABLE_ASYNC_END0( |
| "renderer.scheduler", "ActiveSchedulerTrackedFeature", |
| TRACE_ID_LOCAL(reinterpret_cast<intptr_t>(this) ^ |
| static_cast<int>(it.first))); |
| } |
| |
| back_forward_cache_opt_out_counts_.clear(); |
| back_forward_cache_opt_outs_.reset(); |
| last_uploaded_active_features_ = 0; |
| } |
| |
| void FrameSchedulerImpl::OnStartedUsingFeature( |
| SchedulingPolicy::Feature feature, |
| const SchedulingPolicy& policy) { |
| uint64_t old_mask = GetActiveFeaturesTrackedForBackForwardCacheMetricsMask(); |
| |
| if (policy.disable_aggressive_throttling) |
| OnAddedAggressiveThrottlingOptOut(); |
| if (policy.disable_back_forward_cache) { |
| OnAddedBackForwardCacheOptOut(feature); |
| } |
| |
| uint64_t new_mask = GetActiveFeaturesTrackedForBackForwardCacheMetricsMask(); |
| |
| if (old_mask != new_mask) { |
| NotifyDelegateAboutFeaturesAfterCurrentTask(); |
| TRACE_EVENT_NESTABLE_ASYNC_BEGIN1( |
| "renderer.scheduler", "ActiveSchedulerTrackedFeature", |
| TRACE_ID_LOCAL(reinterpret_cast<intptr_t>(this) ^ |
| static_cast<int>(feature)), |
| "feature", FeatureToHumanReadableString(feature)); |
| } |
| } |
| |
| void FrameSchedulerImpl::OnStoppedUsingFeature( |
| SchedulingPolicy::Feature feature, |
| const SchedulingPolicy& policy) { |
| uint64_t old_mask = GetActiveFeaturesTrackedForBackForwardCacheMetricsMask(); |
| |
| if (policy.disable_aggressive_throttling) |
| OnRemovedAggressiveThrottlingOptOut(); |
| if (policy.disable_back_forward_cache) |
| OnRemovedBackForwardCacheOptOut(feature); |
| |
| uint64_t new_mask = GetActiveFeaturesTrackedForBackForwardCacheMetricsMask(); |
| |
| if (old_mask != new_mask) { |
| NotifyDelegateAboutFeaturesAfterCurrentTask(); |
| TRACE_EVENT_NESTABLE_ASYNC_END0( |
| "renderer.scheduler", "ActiveSchedulerTrackedFeature", |
| TRACE_ID_LOCAL(reinterpret_cast<intptr_t>(this) ^ |
| static_cast<int>(feature))); |
| } |
| } |
| |
| void FrameSchedulerImpl::NotifyDelegateAboutFeaturesAfterCurrentTask() { |
| if (!delegate_) |
| return; |
| if (feature_report_scheduled_) |
| return; |
| feature_report_scheduled_ = true; |
| |
| main_thread_scheduler_->ExecuteAfterCurrentTask( |
| base::BindOnce(&FrameSchedulerImpl::ReportFeaturesToDelegate, |
| document_bound_weak_factory_.GetWeakPtr())); |
| } |
| |
| void FrameSchedulerImpl::ReportFeaturesToDelegate() { |
| DCHECK(delegate_); |
| feature_report_scheduled_ = false; |
| uint64_t mask = GetActiveFeaturesTrackedForBackForwardCacheMetricsMask(); |
| if (mask == last_uploaded_active_features_) |
| return; |
| last_uploaded_active_features_ = mask; |
| delegate_->UpdateActiveSchedulerTrackedFeatures(mask); |
| } |
| |
| base::WeakPtr<FrameScheduler> FrameSchedulerImpl::GetWeakPtr() { |
| return weak_factory_.GetWeakPtr(); |
| } |
| |
| base::WeakPtr<const FrameSchedulerImpl> FrameSchedulerImpl::GetWeakPtr() const { |
| return weak_factory_.GetWeakPtr(); |
| } |
| |
| void FrameSchedulerImpl::ReportActiveSchedulerTrackedFeatures() { |
| if (delegate_) |
| ReportFeaturesToDelegate(); |
| } |
| |
| base::WeakPtr<FrameSchedulerImpl> |
| FrameSchedulerImpl::GetInvalidatingOnBFCacheRestoreWeakPtr() { |
| return invalidating_on_bfcache_restore_weak_factory_.GetWeakPtr(); |
| } |
| |
| void FrameSchedulerImpl::OnAddedAggressiveThrottlingOptOut() { |
| ++aggressive_throttling_opt_out_count_; |
| opted_out_from_aggressive_throttling_ = |
| static_cast<bool>(aggressive_throttling_opt_out_count_); |
| if (parent_page_scheduler_) |
| parent_page_scheduler_->OnThrottlingStatusUpdated(); |
| } |
| |
| void FrameSchedulerImpl::OnRemovedAggressiveThrottlingOptOut() { |
| DCHECK_GT(aggressive_throttling_opt_out_count_, 0); |
| --aggressive_throttling_opt_out_count_; |
| opted_out_from_aggressive_throttling_ = |
| static_cast<bool>(aggressive_throttling_opt_out_count_); |
| if (parent_page_scheduler_) |
| parent_page_scheduler_->OnThrottlingStatusUpdated(); |
| } |
| |
| void FrameSchedulerImpl::OnAddedBackForwardCacheOptOut( |
| SchedulingPolicy::Feature feature) { |
| ++back_forward_cache_opt_out_counts_[feature]; |
| back_forward_cache_opt_outs_.set(static_cast<size_t>(feature)); |
| opted_out_from_back_forward_cache_ = true; |
| } |
| |
| void FrameSchedulerImpl::OnRemovedBackForwardCacheOptOut( |
| SchedulingPolicy::Feature feature) { |
| DCHECK_GT(back_forward_cache_opt_out_counts_[feature], 0); |
| auto it = back_forward_cache_opt_out_counts_.find(feature); |
| if (it->second == 1) { |
| back_forward_cache_opt_out_counts_.erase(it); |
| back_forward_cache_opt_outs_.reset(static_cast<size_t>(feature)); |
| } else { |
| --it->second; |
| } |
| opted_out_from_back_forward_cache_ = |
| !back_forward_cache_opt_out_counts_.empty(); |
| } |
| |
| void FrameSchedulerImpl::WriteIntoTracedValue( |
| perfetto::TracedValue context) const { |
| auto dict = std::move(context).WriteDictionary(); |
| dict.Add("frame_visible", frame_visible_); |
| dict.Add("page_visible", parent_page_scheduler_->IsPageVisible()); |
| dict.Add("cross_origin_to_main_frame", IsCrossOriginToMainFrame()); |
| dict.Add("frame_type", frame_type_ == FrameScheduler::FrameType::kMainFrame |
| ? "MainFrame" |
| : "Subframe"); |
| dict.Add("disable_background_timer_throttling", |
| !RuntimeEnabledFeatures::TimerThrottlingForBackgroundTabsEnabled()); |
| |
| dict.Add("frame_task_queue_controller", frame_task_queue_controller_); |
| |
| if (blame_context_) |
| dict.Add("blame_context", blame_context_); |
| } |
| |
| void FrameSchedulerImpl::SetPageVisibilityForTracing( |
| PageVisibilityState page_visibility) { |
| page_visibility_for_tracing_ = page_visibility; |
| } |
| |
| bool FrameSchedulerImpl::IsPageVisible() const { |
| return parent_page_scheduler_ ? parent_page_scheduler_->IsPageVisible() |
| : true; |
| } |
| |
| void FrameSchedulerImpl::SetPaused(bool frame_paused) { |
| DCHECK(parent_page_scheduler_); |
| if (frame_paused_ == frame_paused) |
| return; |
| |
| frame_paused_ = frame_paused; |
| UpdatePolicy(); |
| } |
| |
| void FrameSchedulerImpl::SetShouldReportPostedTasksWhenDisabled( |
| bool should_report) { |
| // Forward this to all the task queues associated with this frame. |
| for (const auto& task_queue_and_voter : |
| frame_task_queue_controller_->GetAllTaskQueuesAndVoters()) { |
| auto* task_queue = task_queue_and_voter.first; |
| if (task_queue->CanBeFrozen()) { |
| task_queue->GetTaskQueue()->SetShouldReportPostedTasksWhenDisabled( |
| should_report); |
| } |
| } |
| } |
| |
| void FrameSchedulerImpl::SetPageFrozenForTracing(bool frozen) { |
| page_frozen_for_tracing_ = frozen; |
| } |
| |
| void FrameSchedulerImpl::SetPageKeepActiveForTracing(bool keep_active) { |
| page_keep_active_for_tracing_ = keep_active; |
| } |
| |
| void FrameSchedulerImpl::UpdatePolicy() { |
| bool task_queues_were_throttled = task_queues_throttled_; |
| task_queues_throttled_ = ShouldThrottleTaskQueues(); |
| |
| if (!task_queues_throttled_) |
| throttled_task_queue_handles_.clear(); |
| |
| for (const auto& task_queue_and_voter : |
| frame_task_queue_controller_->GetAllTaskQueuesAndVoters()) { |
| UpdateQueuePolicy(task_queue_and_voter.first, task_queue_and_voter.second); |
| if (task_queues_throttled_ && !task_queues_were_throttled && |
| task_queue_and_voter.first->CanBeThrottled()) { |
| MainThreadTaskQueue::ThrottleHandle handle = |
| task_queue_and_voter.first->Throttle(); |
| throttled_task_queue_handles_.push_back(std::move(handle)); |
| } |
| } |
| |
| NotifyLifecycleObservers(); |
| } |
| |
| void FrameSchedulerImpl::UpdateQueuePolicy( |
| MainThreadTaskQueue* queue, |
| TaskQueue::QueueEnabledVoter* voter) { |
| DCHECK(queue); |
| UpdatePriority(queue); |
| if (!voter) |
| return; |
| DCHECK(parent_page_scheduler_); |
| bool queue_disabled = false; |
| queue_disabled |= frame_paused_ && queue->CanBePaused(); |
| queue_disabled |= preempted_for_cooperative_scheduling_; |
| // Per-frame freezable task queues will be frozen after 5 mins in background |
| // on Android, and if the browser freezes the page in the background. They |
| // will be resumed when the page is visible. |
| bool queue_frozen = |
| parent_page_scheduler_->IsFrozen() && queue->CanBeFrozen(); |
| // Override freezing if keep-active is true. |
| if (queue_frozen && !queue->FreezeWhenKeepActive()) |
| queue_frozen = !parent_page_scheduler_->KeepActive(); |
| queue_disabled |= queue_frozen; |
| // Per-frame freezable queues of tasks which are specified as getting frozen |
| // immediately when their frame becomes invisible get frozen. They will be |
| // resumed when the frame becomes visible again. |
| queue_disabled |= !frame_visible_ && !queue->CanRunInBackground(); |
| voter->SetVoteToEnable(!queue_disabled); |
| } |
| |
| SchedulingLifecycleState FrameSchedulerImpl::CalculateLifecycleState( |
| ObserverType type) const { |
| // Detached frames are not throttled. |
| if (!parent_page_scheduler_) |
| return SchedulingLifecycleState::kNotThrottled; |
| |
| if (parent_page_scheduler_->IsFrozen() && |
| !parent_page_scheduler_->KeepActive()) { |
| DCHECK(!parent_page_scheduler_->IsPageVisible()); |
| return SchedulingLifecycleState::kStopped; |
| } |
| if (subresource_loading_paused_ && type == ObserverType::kLoader) |
| return SchedulingLifecycleState::kStopped; |
| if (type == ObserverType::kLoader && |
| parent_page_scheduler_->OptedOutFromAggressiveThrottling()) { |
| return SchedulingLifecycleState::kNotThrottled; |
| } |
| // Note: The scheduling lifecycle state ignores wake up rate throttling. |
| if (parent_page_scheduler_->IsCPUTimeThrottled()) |
| return SchedulingLifecycleState::kThrottled; |
| if (!parent_page_scheduler_->IsPageVisible()) |
| return SchedulingLifecycleState::kHidden; |
| return SchedulingLifecycleState::kNotThrottled; |
| } |
| |
| void FrameSchedulerImpl::OnFirstContentfulPaint() { |
| waiting_for_contentful_paint_ = false; |
| if (GetFrameType() == FrameScheduler::FrameType::kMainFrame) |
| main_thread_scheduler_->OnMainFramePaint(); |
| } |
| |
| void FrameSchedulerImpl::OnFirstMeaningfulPaint() { |
| waiting_for_meaningful_paint_ = false; |
| |
| if (GetFrameType() != FrameScheduler::FrameType::kMainFrame) |
| return; |
| |
| main_thread_scheduler_->OnMainFramePaint(); |
| |
| if (main_thread_scheduler_->agent_scheduling_strategy() |
| .OnMainFrameFirstMeaningfulPaint(*this) == |
| AgentSchedulingStrategy::ShouldUpdatePolicy::kYes) { |
| main_thread_scheduler_->OnAgentStrategyUpdated(); |
| } |
| } |
| |
| void FrameSchedulerImpl::OnLoad() { |
| if (GetFrameType() == FrameScheduler::FrameType::kMainFrame) { |
| // TODO(talp): Once MTSI::UpdatePolicyLocked is refactored, this can notify |
| // the agent strategy directly and, if necessary, trigger the queue priority |
| // update. |
| main_thread_scheduler_->OnMainFrameLoad(*this); |
| } |
| |
| loading_power_mode_voter_->VoteFor(power_scheduler::PowerMode::kIdle); |
| } |
| |
| bool FrameSchedulerImpl::IsWaitingForContentfulPaint() const { |
| return waiting_for_contentful_paint_; |
| } |
| |
| bool FrameSchedulerImpl::IsWaitingForMeaningfulPaint() const { |
| return waiting_for_meaningful_paint_; |
| } |
| |
| bool FrameSchedulerImpl::IsOrdinary() const { |
| if (!parent_page_scheduler_) |
| return true; |
| return parent_page_scheduler_->IsOrdinary(); |
| } |
| |
| bool FrameSchedulerImpl::ShouldThrottleTaskQueues() const { |
| DCHECK(parent_page_scheduler_); |
| |
| if (!RuntimeEnabledFeatures::TimerThrottlingForBackgroundTabsEnabled()) |
| return false; |
| if (parent_page_scheduler_->IsAudioPlaying()) |
| return false; |
| if (!parent_page_scheduler_->IsPageVisible()) |
| return true; |
| if (base::FeatureList::IsEnabled(kThrottleVisibleNotFocusedTimers) && |
| !parent_page_scheduler_->IsPageFocused()) { |
| return true; |
| } |
| return RuntimeEnabledFeatures::TimerThrottlingForHiddenFramesEnabled() && |
| !frame_visible_ && IsCrossOriginToMainFrame(); |
| } |
| |
| bool FrameSchedulerImpl::IsExemptFromBudgetBasedThrottling() const { |
| return opted_out_from_aggressive_throttling(); |
| } |
| |
| TaskQueue::QueuePriority FrameSchedulerImpl::ComputePriority( |
| MainThreadTaskQueue* task_queue) const { |
| DCHECK(task_queue); |
| |
| FrameScheduler* frame_scheduler = task_queue->GetFrameScheduler(); |
| |
| // Checks the task queue is associated with this frame scheduler. |
| DCHECK_EQ(frame_scheduler, this); |
| |
| auto queue_priority_pair = |
| resource_loading_task_queue_priorities_.find(task_queue); |
| if (queue_priority_pair != resource_loading_task_queue_priorities_.end()) |
| return queue_priority_pair->value; |
| |
| // TODO(kdillon): Ordering here is relative to the experiments below. Cleanup |
| // unused experiment logic so that this switch can be merged with the |
| // prioritisation type decisions below. |
| switch (task_queue->GetPrioritisationType()) { |
| case MainThreadTaskQueue::QueueTraits::PrioritisationType:: |
| kInternalScriptContinuation: |
| return TaskQueue::QueuePriority::kVeryHighPriority; |
| case MainThreadTaskQueue::QueueTraits::PrioritisationType::kBestEffort: |
| return TaskQueue::QueuePriority::kBestEffortPriority; |
| default: |
| break; |
| } |
| |
| // TODO(shaseley): This should use lower priorities if the frame is |
| // deprioritized. Change this once we refactor and add frame policy/priorities |
| // and add a range of new priorities less than low. |
| if (task_queue->web_scheduling_priority()) { |
| switch (task_queue->web_scheduling_priority().value()) { |
| case WebSchedulingPriority::kUserBlockingPriority: |
| return TaskQueue::QueuePriority::kHighPriority; |
| case WebSchedulingPriority::kUserVisiblePriority: |
| return TaskQueue::QueuePriority::kNormalPriority; |
| case WebSchedulingPriority::kBackgroundPriority: |
| return TaskQueue::QueuePriority::kLowPriority; |
| } |
| } |
| |
| if (!parent_page_scheduler_) { |
| // Frame might be detached during its shutdown. Return a default priority |
| // in that case. |
| return TaskQueue::QueuePriority::kNormalPriority; |
| } |
| |
| // A hidden page with no audio. |
| if (parent_page_scheduler_->IsBackgrounded()) { |
| if (main_thread_scheduler_->scheduling_settings() |
| .low_priority_background_page) { |
| return TaskQueue::QueuePriority::kLowPriority; |
| } |
| |
| if (main_thread_scheduler_->scheduling_settings() |
| .best_effort_background_page) { |
| return TaskQueue::QueuePriority::kBestEffortPriority; |
| } |
| } |
| |
| // If the page is loading or if the priority experiments should take place at |
| // all times. |
| if (parent_page_scheduler_->IsLoading() || |
| !main_thread_scheduler_->scheduling_settings() |
| .use_frame_priorities_only_during_loading) { |
| // Low priority feature enabled for hidden frame. |
| if (main_thread_scheduler_->scheduling_settings() |
| .low_priority_hidden_frame && |
| !IsFrameVisible()) { |
| return TaskQueue::QueuePriority::kLowPriority; |
| } |
| |
| bool is_subframe = GetFrameType() == FrameScheduler::FrameType::kSubframe; |
| bool is_throttleable_task_queue = |
| task_queue->queue_type() == |
| MainThreadTaskQueue::QueueType::kFrameThrottleable; |
| |
| // Low priority feature enabled for sub-frame. |
| if (main_thread_scheduler_->scheduling_settings().low_priority_subframe && |
| is_subframe) { |
| return TaskQueue::QueuePriority::kLowPriority; |
| } |
| |
| // Low priority feature enabled for sub-frame throttleable task queues. |
| if (main_thread_scheduler_->scheduling_settings() |
| .low_priority_subframe_throttleable && |
| is_subframe && is_throttleable_task_queue) { |
| return TaskQueue::QueuePriority::kLowPriority; |
| } |
| |
| // Low priority feature enabled for throttleable task queues. |
| if (main_thread_scheduler_->scheduling_settings() |
| .low_priority_throttleable && |
| is_throttleable_task_queue) { |
| return TaskQueue::QueuePriority::kLowPriority; |
| } |
| } |
| |
| // Ad frame experiment. |
| if (IsAdFrame() && (parent_page_scheduler_->IsLoading() || |
| !main_thread_scheduler_->scheduling_settings() |
| .use_adframe_priorities_only_during_loading)) { |
| if (main_thread_scheduler_->scheduling_settings().low_priority_ad_frame) { |
| return TaskQueue::QueuePriority::kLowPriority; |
| } |
| |
| if (main_thread_scheduler_->scheduling_settings().best_effort_ad_frame) { |
| return TaskQueue::QueuePriority::kBestEffortPriority; |
| } |
| } |
| |
| // Frame origin type experiment. |
| if (IsCrossOriginToMainFrame()) { |
| if (main_thread_scheduler_->scheduling_settings() |
| .low_priority_cross_origin || |
| (main_thread_scheduler_->scheduling_settings() |
| .low_priority_cross_origin_only_during_loading && |
| parent_page_scheduler_->IsLoading())) { |
| return TaskQueue::QueuePriority::kLowPriority; |
| } |
| } |
| |
| // Consult per-agent scheduling strategy to see if it wants to affect queue |
| // priority. Done here to avoid interfering with other policy decisions. |
| base::Optional<TaskQueue::QueuePriority> per_agent_priority = |
| main_thread_scheduler_->agent_scheduling_strategy().QueuePriority( |
| *task_queue); |
| if (per_agent_priority.has_value()) |
| return per_agent_priority.value(); |
| |
| if (task_queue->GetPrioritisationType() == |
| MainThreadTaskQueue::QueueTraits::PrioritisationType::kLoadingControl) { |
| return main_thread_scheduler_->should_prioritize_loading_with_compositing() |
| ? TaskQueue::QueuePriority::kVeryHighPriority |
| : TaskQueue::QueuePriority::kHighPriority; |
| } |
| |
| if (task_queue->GetPrioritisationType() == |
| MainThreadTaskQueue::QueueTraits::PrioritisationType::kLoading && |
| main_thread_scheduler_->should_prioritize_loading_with_compositing()) { |
| return main_thread_scheduler_->compositor_priority(); |
| } |
| |
| if (task_queue->GetPrioritisationType() == |
| MainThreadTaskQueue::QueueTraits::PrioritisationType::kFindInPage) { |
| return main_thread_scheduler_->find_in_page_priority(); |
| } |
| |
| if (task_queue->GetPrioritisationType() == |
| MainThreadTaskQueue::QueueTraits::PrioritisationType:: |
| kHighPriorityLocalFrame) { |
| return TaskQueue::QueuePriority::kHighestPriority; |
| } |
| |
| if (task_queue->GetPrioritisationType() == |
| MainThreadTaskQueue::QueueTraits::PrioritisationType:: |
| kExperimentalDatabase) { |
| // TODO(shaseley): This decision should probably be based on Agent |
| // visibility. Consider changing this before shipping anything. |
| return parent_page_scheduler_->IsPageVisible() |
| ? TaskQueue::QueuePriority::kHighPriority |
| : TaskQueue::QueuePriority::kNormalPriority; |
| } |
| |
| return TaskQueue::QueuePriority::kNormalPriority; |
| } |
| |
| std::unique_ptr<blink::mojom::blink::PauseSubresourceLoadingHandle> |
| FrameSchedulerImpl::GetPauseSubresourceLoadingHandle() { |
| return std::make_unique<PauseSubresourceLoadingHandleImpl>( |
| weak_factory_.GetWeakPtr()); |
| } |
| |
| void FrameSchedulerImpl::AddPauseSubresourceLoadingHandle() { |
| ++subresource_loading_pause_count_; |
| if (subresource_loading_pause_count_ != 1) { |
| DCHECK(subresource_loading_paused_); |
| return; |
| } |
| |
| DCHECK(!subresource_loading_paused_); |
| subresource_loading_paused_ = true; |
| UpdatePolicy(); |
| } |
| |
| void FrameSchedulerImpl::RemovePauseSubresourceLoadingHandle() { |
| DCHECK_LT(0u, subresource_loading_pause_count_); |
| --subresource_loading_pause_count_; |
| DCHECK(subresource_loading_paused_); |
| if (subresource_loading_pause_count_ == 0) { |
| subresource_loading_paused_ = false; |
| UpdatePolicy(); |
| } |
| } |
| |
| ukm::UkmRecorder* FrameSchedulerImpl::GetUkmRecorder() { |
| if (!delegate_) |
| return nullptr; |
| return delegate_->GetUkmRecorder(); |
| } |
| |
| ukm::SourceId FrameSchedulerImpl::GetUkmSourceId() { |
| if (!delegate_) |
| return ukm::kInvalidSourceId; |
| return delegate_->GetUkmSourceId(); |
| } |
| |
| void FrameSchedulerImpl::OnTaskQueueCreated( |
| MainThreadTaskQueue* task_queue, |
| base::sequence_manager::TaskQueue::QueueEnabledVoter* voter) { |
| DCHECK(parent_page_scheduler_); |
| |
| task_queue->GetTaskQueue()->SetBlameContext(blame_context_); |
| UpdateQueuePolicy(task_queue, voter); |
| |
| if (task_queue->CanBeThrottled()) { |
| base::sequence_manager::LazyNow lazy_now( |
| main_thread_scheduler_->tick_clock()); |
| |
| CPUTimeBudgetPool* cpu_time_budget_pool = |
| parent_page_scheduler_->background_cpu_time_budget_pool(); |
| if (cpu_time_budget_pool) { |
| cpu_time_budget_pool->AddQueue(lazy_now.Now(), |
| task_queue->GetTaskQueue()); |
| } |
| |
| parent_page_scheduler_->AddQueueToWakeUpBudgetPool( |
| task_queue, frame_origin_type_, &lazy_now); |
| |
| if (task_queues_throttled_) { |
| MainThreadTaskQueue::ThrottleHandle handle = task_queue->Throttle(); |
| throttled_task_queue_handles_.push_back(std::move(handle)); |
| } |
| } |
| } |
| |
| void FrameSchedulerImpl::SetOnIPCTaskPostedWhileInBackForwardCacheHandler() { |
| DCHECK(parent_page_scheduler_->IsInBackForwardCache()); |
| for (const auto& task_queue_and_voter : |
| frame_task_queue_controller_->GetAllTaskQueuesAndVoters()) { |
| task_queue_and_voter.first->SetOnIPCTaskPosted(base::BindRepeating( |
| [](scoped_refptr<base::SingleThreadTaskRunner> task_runner, |
| base::WeakPtr<FrameSchedulerImpl> frame_scheduler, |
| const base::sequence_manager::Task& task) { |
| // Only log IPC tasks. IPC tasks are only logged currently as IPC |
| // hash can be mapped back to a function name, and IPC tasks may |
| // potentially post sensitive information. |
| if (!task.ipc_hash && !task.ipc_interface_name) { |
| return; |
| } |
| base::ScopedDeferTaskPosting::PostOrDefer( |
| task_runner, FROM_HERE, |
| base::BindOnce( |
| &FrameSchedulerImpl::OnIPCTaskPostedWhileInBackForwardCache, |
| frame_scheduler, task.ipc_hash, task.ipc_interface_name), |
| base::TimeDelta()); |
| }, |
| main_thread_scheduler_->BackForwardCacheIpcTrackingTaskRunner(), |
| GetInvalidatingOnBFCacheRestoreWeakPtr())); |
| } |
| } |
| |
| void FrameSchedulerImpl::DetachOnIPCTaskPostedWhileInBackForwardCacheHandler() { |
| for (const auto& task_queue_and_voter : |
| frame_task_queue_controller_->GetAllTaskQueuesAndVoters()) { |
| task_queue_and_voter.first->DetachOnIPCTaskPostedWhileInBackForwardCache(); |
| } |
| |
| invalidating_on_bfcache_restore_weak_factory_.InvalidateWeakPtrs(); |
| } |
| |
| void FrameSchedulerImpl::OnIPCTaskPostedWhileInBackForwardCache( |
| uint32_t ipc_hash, |
| const char* ipc_interface_name) { |
| // IPC tasks may have an IPC interface name in addition to, or instead of an |
| // IPC hash. IPC hash is known from the mojo Accept method. When IPC hash is |
| // 0, then the IPC hash must be calculated from the IPC interface name |
| // instead. |
| if (!ipc_hash) { |
| // base::HashMetricName produces a uint64; however, the MD5 hash calculation |
| // for an IPC interface name is always calculated as uint32; the IPC hash on |
| // a task is also a uint32. The calculation here is meant to mimic the |
| // calculation used in base::MD5Hash32Constexpr. |
| ipc_hash = base::TaskAnnotator::ScopedSetIpcHash::MD5HashMetricName( |
| ipc_interface_name); |
| } |
| |
| DCHECK(parent_page_scheduler_->IsInBackForwardCache()); |
| base::UmaHistogramSparse( |
| "BackForwardCache.Experimental.UnexpectedIPCMessagePostedToCachedFrame." |
| "MethodHash", |
| static_cast<int32_t>(ipc_hash)); |
| |
| base::TimeDelta duration = |
| main_thread_scheduler_->tick_clock()->NowTicks() - |
| parent_page_scheduler_->GetStoredInBackForwardCacheTimestamp(); |
| base::UmaHistogramCustomTimes( |
| "BackForwardCache.Experimental.UnexpectedIPCMessagePostedToCachedFrame." |
| "TimeUntilIPCReceived", |
| duration, base::TimeDelta(), base::TimeDelta::FromMinutes(5), 100); |
| } |
| |
| WTF::HashSet<SchedulingPolicy::Feature> |
| FrameSchedulerImpl::GetActiveFeaturesTrackedForBackForwardCacheMetrics() { |
| WTF::HashSet<SchedulingPolicy::Feature> result; |
| for (const auto& it : back_forward_cache_opt_out_counts_) |
| result.insert(it.first); |
| return result; |
| } |
| |
| uint64_t |
| FrameSchedulerImpl::GetActiveFeaturesTrackedForBackForwardCacheMetricsMask() |
| const { |
| auto result = back_forward_cache_opt_outs_.to_ullong(); |
| static_assert(static_cast<size_t>(SchedulingPolicy::Feature::kMaxValue) < |
| sizeof(result) * 8, |
| "Number of the features should allow a bitmask to fit into " |
| "64-bit integer"); |
| return result; |
| } |
| |
| base::WeakPtr<FrameOrWorkerScheduler> |
| FrameSchedulerImpl::GetDocumentBoundWeakPtr() { |
| return document_bound_weak_factory_.GetWeakPtr(); |
| } |
| |
| std::unique_ptr<WebSchedulingTaskQueue> |
| FrameSchedulerImpl::CreateWebSchedulingTaskQueue( |
| WebSchedulingPriority priority) { |
| // Use QueueTraits here that are the same as postMessage, which is one current |
| // method for scheduling script. |
| scoped_refptr<MainThreadTaskQueue> task_queue = |
| frame_task_queue_controller_->NewWebSchedulingTaskQueue( |
| PausableTaskQueueTraits(), priority); |
| return std::make_unique<WebSchedulingTaskQueueImpl>(task_queue->AsWeakPtr()); |
| } |
| |
| void FrameSchedulerImpl::OnWebSchedulingTaskQueuePriorityChanged( |
| MainThreadTaskQueue* queue) { |
| UpdateQueuePolicy(queue, |
| frame_task_queue_controller_->GetQueueEnabledVoter(queue)); |
| } |
| |
| const base::UnguessableToken& FrameSchedulerImpl::GetAgentClusterId() const { |
| if (!delegate_) |
| return base::UnguessableToken::Null(); |
| return delegate_->GetAgentClusterId(); |
| } |
| |
| // static |
| MainThreadTaskQueue::QueueTraits |
| FrameSchedulerImpl::ThrottleableTaskQueueTraits() { |
| return QueueTraits() |
| .SetCanBeThrottled(true) |
| .SetCanBeFrozen(true) |
| .SetCanBeDeferred(true) |
| .SetCanBePaused(true) |
| .SetCanRunWhenVirtualTimePaused(false) |
| .SetCanBePausedForAndroidWebview(true); |
| } |
| |
| // static |
| MainThreadTaskQueue::QueueTraits |
| FrameSchedulerImpl::DeferrableTaskQueueTraits() { |
| return QueueTraits() |
| .SetCanBeDeferred(true) |
| .SetCanBeFrozen(true) |
| .SetCanBePaused(true) |
| .SetCanRunWhenVirtualTimePaused(false) |
| .SetCanBePausedForAndroidWebview(true); |
| } |
| |
| // static |
| MainThreadTaskQueue::QueueTraits FrameSchedulerImpl::PausableTaskQueueTraits() { |
| return QueueTraits() |
| .SetCanBeFrozen(true) |
| .SetCanBePaused(true) |
| .SetCanRunWhenVirtualTimePaused(false) |
| .SetCanBePausedForAndroidWebview(true); |
| } |
| |
| // static |
| MainThreadTaskQueue::QueueTraits |
| FrameSchedulerImpl::FreezableTaskQueueTraits() { |
| // Should not use VirtualTime because using VirtualTime would make the task |
| // execution non-deterministic and produce timeouts failures. |
| return QueueTraits().SetCanBeFrozen(true); |
| } |
| |
| // static |
| MainThreadTaskQueue::QueueTraits |
| FrameSchedulerImpl::UnpausableTaskQueueTraits() { |
| return QueueTraits().SetCanRunWhenVirtualTimePaused(false); |
| } |
| |
| MainThreadTaskQueue::QueueTraits |
| FrameSchedulerImpl::ForegroundOnlyTaskQueueTraits() { |
| return ThrottleableTaskQueueTraits() |
| .SetCanRunInBackground(false) |
| .SetCanRunWhenVirtualTimePaused(false); |
| } |
| |
| MainThreadTaskQueue::QueueTraits |
| FrameSchedulerImpl::DoesNotUseVirtualTimeTaskQueueTraits() { |
| return QueueTraits().SetCanRunWhenVirtualTimePaused(true); |
| } |
| |
| void FrameSchedulerImpl::SetPreemptedForCooperativeScheduling( |
| Preempted preempted) { |
| DCHECK_NE(preempted.value(), preempted_for_cooperative_scheduling_); |
| preempted_for_cooperative_scheduling_ = preempted.value(); |
| UpdatePolicy(); |
| } |
| |
| MainThreadTaskQueue::QueueTraits FrameSchedulerImpl::LoadingTaskQueueTraits() { |
| return QueueTraits() |
| .SetCanBePaused(true) |
| .SetCanBeFrozen(true) |
| .SetCanBeDeferred(true) |
| .SetPrioritisationType(QueueTraits::PrioritisationType::kLoading); |
| } |
| |
| MainThreadTaskQueue::QueueTraits |
| FrameSchedulerImpl::UnfreezableLoadingTaskQueueTraits() { |
| return LoadingTaskQueueTraits().SetCanBeFrozen(false); |
| } |
| |
| MainThreadTaskQueue::QueueTraits |
| FrameSchedulerImpl::LoadingControlTaskQueueTraits() { |
| return QueueTraits() |
| .SetCanBePaused(true) |
| .SetCanBeFrozen(true) |
| .SetCanBeDeferred(true) |
| .SetPrioritisationType(QueueTraits::PrioritisationType::kLoadingControl); |
| } |
| |
| MainThreadTaskQueue::QueueTraits |
| FrameSchedulerImpl::FindInPageTaskQueueTraits() { |
| return PausableTaskQueueTraits().SetPrioritisationType( |
| QueueTraits::PrioritisationType::kFindInPage); |
| } |
| } // namespace scheduler |
| } // namespace blink |
