| // 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 "cc/trees/proxy_impl.h" |
| |
| #include <string.h> |
| |
| #include <algorithm> |
| #include <string> |
| |
| #include "base/auto_reset.h" |
| #include "base/trace_event/trace_event.h" |
| #include "base/trace_event/trace_event_argument.h" |
| #include "cc/base/devtools_instrumentation.h" |
| #include "cc/benchmarks/benchmark_instrumentation.h" |
| #include "cc/input/browser_controls_offset_manager.h" |
| #include "cc/scheduler/compositor_timing_history.h" |
| #include "cc/trees/layer_tree_frame_sink.h" |
| #include "cc/trees/layer_tree_host.h" |
| #include "cc/trees/layer_tree_impl.h" |
| #include "cc/trees/mutator_host.h" |
| #include "cc/trees/proxy_main.h" |
| #include "cc/trees/render_frame_metadata_observer.h" |
| #include "cc/trees/task_runner_provider.h" |
| #include "components/viz/common/frame_sinks/delay_based_time_source.h" |
| #include "components/viz/common/gpu/context_provider.h" |
| #include "gpu/command_buffer/client/gles2_interface.h" |
| #include "services/metrics/public/cpp/ukm_recorder.h" |
| #include "ui/gfx/presentation_feedback.h" |
| |
| namespace cc { |
| |
| namespace { |
| |
| // Measured in seconds. |
| const double kSmoothnessTakesPriorityExpirationDelay = 0.25; |
| |
| unsigned int nextBeginFrameId = 0; |
| |
| } // namespace |
| |
| ProxyImpl::ProxyImpl(base::WeakPtr<ProxyMain> proxy_main_weak_ptr, |
| LayerTreeHost* layer_tree_host, |
| TaskRunnerProvider* task_runner_provider) |
| : layer_tree_host_id_(layer_tree_host->GetId()), |
| commit_completion_waits_for_activation_(false), |
| commit_completion_event_(nullptr), |
| activation_completion_event_(nullptr), |
| next_frame_is_newly_committed_frame_(false), |
| inside_draw_(false), |
| input_throttled_until_commit_(false), |
| task_runner_provider_(task_runner_provider), |
| smoothness_priority_expiration_notifier_( |
| task_runner_provider->ImplThreadTaskRunner(), |
| base::Bind(&ProxyImpl::RenewTreePriority, base::Unretained(this)), |
| base::TimeDelta::FromSecondsD( |
| kSmoothnessTakesPriorityExpirationDelay)), |
| rendering_stats_instrumentation_( |
| layer_tree_host->rendering_stats_instrumentation()), |
| proxy_main_weak_ptr_(proxy_main_weak_ptr) { |
| TRACE_EVENT0("cc", "ProxyImpl::ProxyImpl"); |
| DCHECK(IsImplThread()); |
| DCHECK(IsMainThreadBlocked()); |
| |
| // Double checking we set this correctly since double->int truncations are |
| // silent and have been done mistakenly: crbug.com/568120. |
| DCHECK(!smoothness_priority_expiration_notifier_.delay().is_zero()); |
| |
| host_impl_ = layer_tree_host->CreateLayerTreeHostImpl(this); |
| const LayerTreeSettings& settings = layer_tree_host->GetSettings(); |
| |
| SchedulerSettings scheduler_settings(settings.ToSchedulerSettings()); |
| |
| std::unique_ptr<CompositorTimingHistory> compositor_timing_history( |
| new CompositorTimingHistory( |
| scheduler_settings.using_synchronous_renderer_compositor, |
| CompositorTimingHistory::RENDERER_UMA, |
| rendering_stats_instrumentation_)); |
| scheduler_.reset(new Scheduler(this, scheduler_settings, layer_tree_host_id_, |
| task_runner_provider_->ImplThreadTaskRunner(), |
| std::move(compositor_timing_history))); |
| |
| DCHECK_EQ(scheduler_->visible(), host_impl_->visible()); |
| } |
| |
| ProxyImpl::BlockedMainCommitOnly::BlockedMainCommitOnly() |
| : layer_tree_host(nullptr) {} |
| |
| ProxyImpl::BlockedMainCommitOnly::~BlockedMainCommitOnly() = default; |
| |
| ProxyImpl::~ProxyImpl() { |
| TRACE_EVENT0("cc", "ProxyImpl::~ProxyImpl"); |
| DCHECK(IsImplThread()); |
| DCHECK(IsMainThreadBlocked()); |
| |
| // Prevent the scheduler from performing actions while we're in an |
| // inconsistent state. |
| scheduler_->Stop(); |
| // Take away the LayerTreeFrameSink before destroying things so it doesn't |
| // try to call into its client mid-shutdown. |
| host_impl_->ReleaseLayerTreeFrameSink(); |
| |
| // It is important to destroy LTHI before the Scheduler since it can make |
| // callbacks that access it during destruction cleanup. |
| host_impl_ = nullptr; |
| scheduler_ = nullptr; |
| |
| // We need to explicitly shutdown the notifier to destroy any weakptrs it is |
| // holding while still on the compositor thread. This also ensures any |
| // callbacks holding a ProxyImpl pointer are cancelled. |
| smoothness_priority_expiration_notifier_.Shutdown(); |
| } |
| |
| void ProxyImpl::InitializeMutatorOnImpl( |
| std::unique_ptr<LayerTreeMutator> mutator) { |
| TRACE_EVENT0("cc", "ProxyImpl::InitializeMutatorOnImpl"); |
| DCHECK(IsImplThread()); |
| host_impl_->SetLayerTreeMutator(std::move(mutator)); |
| } |
| |
| void ProxyImpl::UpdateBrowserControlsStateOnImpl( |
| BrowserControlsState constraints, |
| BrowserControlsState current, |
| bool animate) { |
| DCHECK(IsImplThread()); |
| host_impl_->browser_controls_manager()->UpdateBrowserControlsState( |
| constraints, current, animate); |
| } |
| |
| void ProxyImpl::InitializeLayerTreeFrameSinkOnImpl( |
| LayerTreeFrameSink* layer_tree_frame_sink, |
| base::WeakPtr<ProxyMain> proxy_main_frame_sink_bound_weak_ptr) { |
| TRACE_EVENT0("cc", "ProxyImpl::InitializeLayerTreeFrameSinkOnImplThread"); |
| DCHECK(IsImplThread()); |
| |
| proxy_main_frame_sink_bound_weak_ptr_ = proxy_main_frame_sink_bound_weak_ptr; |
| |
| LayerTreeHostImpl* host_impl = host_impl_.get(); |
| bool success = host_impl->InitializeRenderer(layer_tree_frame_sink); |
| MainThreadTaskRunner()->PostTask( |
| FROM_HERE, base::BindOnce(&ProxyMain::DidInitializeLayerTreeFrameSink, |
| proxy_main_weak_ptr_, success)); |
| if (success) |
| scheduler_->DidCreateAndInitializeLayerTreeFrameSink(); |
| } |
| |
| void ProxyImpl::MainThreadHasStoppedFlingingOnImpl() { |
| DCHECK(IsImplThread()); |
| host_impl_->MainThreadHasStoppedFlinging(); |
| } |
| |
| void ProxyImpl::SetInputThrottledUntilCommitOnImpl(bool is_throttled) { |
| DCHECK(IsImplThread()); |
| if (is_throttled == input_throttled_until_commit_) |
| return; |
| input_throttled_until_commit_ = is_throttled; |
| RenewTreePriority(); |
| } |
| |
| void ProxyImpl::SetDeferCommitsOnImpl(bool defer_commits) const { |
| DCHECK(IsImplThread()); |
| scheduler_->SetDeferCommits(defer_commits); |
| } |
| |
| void ProxyImpl::SetNeedsRedrawOnImpl(const gfx::Rect& damage_rect) { |
| DCHECK(IsImplThread()); |
| host_impl_->SetViewportDamage(damage_rect); |
| SetNeedsRedrawOnImplThread(); |
| } |
| |
| void ProxyImpl::SetNeedsCommitOnImpl() { |
| DCHECK(IsImplThread()); |
| SetNeedsCommitOnImplThread(); |
| } |
| |
| void ProxyImpl::BeginMainFrameAbortedOnImpl( |
| CommitEarlyOutReason reason, |
| base::TimeTicks main_thread_start_time, |
| std::vector<std::unique_ptr<SwapPromise>> swap_promises) { |
| TRACE_EVENT1("cc", "ProxyImpl::BeginMainFrameAbortedOnImplThread", "reason", |
| CommitEarlyOutReasonToString(reason)); |
| DCHECK(IsImplThread()); |
| DCHECK(scheduler_->CommitPending()); |
| |
| if (CommitEarlyOutHandledCommit(reason)) { |
| SetInputThrottledUntilCommitOnImpl(false); |
| } |
| host_impl_->BeginMainFrameAborted(reason, std::move(swap_promises)); |
| scheduler_->NotifyBeginMainFrameStarted(main_thread_start_time); |
| scheduler_->BeginMainFrameAborted(reason); |
| } |
| |
| void ProxyImpl::SetVisibleOnImpl(bool visible) { |
| TRACE_EVENT1("cc", "ProxyImpl::SetVisibleOnImplThread", "visible", visible); |
| DCHECK(IsImplThread()); |
| host_impl_->SetVisible(visible); |
| scheduler_->SetVisible(visible); |
| } |
| |
| void ProxyImpl::ReleaseLayerTreeFrameSinkOnImpl(CompletionEvent* completion) { |
| DCHECK(IsImplThread()); |
| |
| // Unlike DidLoseLayerTreeFrameSinkOnImplThread, we don't need to call |
| // LayerTreeHost::DidLoseLayerTreeFrameSink since it already knows. |
| scheduler_->DidLoseLayerTreeFrameSink(); |
| host_impl_->ReleaseLayerTreeFrameSink(); |
| completion->Signal(); |
| } |
| |
| void ProxyImpl::FinishGLOnImpl(CompletionEvent* completion) { |
| TRACE_EVENT0("cc", "ProxyImpl::FinishGLOnImplThread"); |
| DCHECK(IsImplThread()); |
| if (host_impl_->layer_tree_frame_sink()) { |
| viz::ContextProvider* context_provider = |
| host_impl_->layer_tree_frame_sink()->context_provider(); |
| if (context_provider) |
| context_provider->ContextGL()->Finish(); |
| } |
| completion->Signal(); |
| } |
| |
| void ProxyImpl::MainFrameWillHappenOnImplForTesting( |
| CompletionEvent* completion, |
| bool* main_frame_will_happen) { |
| DCHECK(IsImplThread()); |
| if (host_impl_->layer_tree_frame_sink()) { |
| *main_frame_will_happen = scheduler_->MainFrameForTestingWillHappen(); |
| } else { |
| *main_frame_will_happen = false; |
| } |
| completion->Signal(); |
| } |
| |
| void ProxyImpl::RequestBeginMainFrameNotExpected(bool new_state) { |
| DCHECK(IsImplThread()); |
| DCHECK(scheduler_); |
| TRACE_EVENT1("cc", "ProxyImpl::RequestBeginMainFrameNotExpected", "new_state", |
| new_state); |
| scheduler_->SetMainThreadWantsBeginMainFrameNotExpected(new_state); |
| } |
| |
| void ProxyImpl::NotifyReadyToCommitOnImpl( |
| CompletionEvent* completion, |
| LayerTreeHost* layer_tree_host, |
| base::TimeTicks main_thread_start_time, |
| bool hold_commit_for_activation) { |
| TRACE_EVENT0("cc", "ProxyImpl::NotifyReadyToCommitOnImpl"); |
| DCHECK(!commit_completion_event_); |
| DCHECK(IsImplThread() && IsMainThreadBlocked()); |
| DCHECK(scheduler_); |
| DCHECK(scheduler_->CommitPending()); |
| |
| if (!host_impl_) { |
| TRACE_EVENT_INSTANT0("cc", "EarlyOut_NoLayerTree", |
| TRACE_EVENT_SCOPE_THREAD); |
| completion->Signal(); |
| return; |
| } |
| |
| // Ideally, we should inform to impl thread when BeginMainFrame is started. |
| // But, we can avoid a PostTask in here. |
| scheduler_->NotifyBeginMainFrameStarted(main_thread_start_time); |
| |
| host_impl_->ReadyToCommit(); |
| |
| commit_completion_event_ = completion; |
| commit_completion_waits_for_activation_ = hold_commit_for_activation; |
| |
| DCHECK(!blocked_main_commit().layer_tree_host); |
| blocked_main_commit().layer_tree_host = layer_tree_host; |
| scheduler_->NotifyReadyToCommit(); |
| } |
| |
| void ProxyImpl::DidLoseLayerTreeFrameSinkOnImplThread() { |
| TRACE_EVENT0("cc", "ProxyImpl::DidLoseLayerTreeFrameSinkOnImplThread"); |
| DCHECK(IsImplThread()); |
| MainThreadTaskRunner()->PostTask( |
| FROM_HERE, base::BindOnce(&ProxyMain::DidLoseLayerTreeFrameSink, |
| proxy_main_weak_ptr_)); |
| scheduler_->DidLoseLayerTreeFrameSink(); |
| } |
| |
| void ProxyImpl::SetBeginFrameSource(viz::BeginFrameSource* source) { |
| // During shutdown, destroying the LayerTreeFrameSink may unset the |
| // viz::BeginFrameSource. |
| if (scheduler_) { |
| // TODO(enne): this overrides any preexisting begin frame source. Those |
| // other sources will eventually be removed and this will be the only path. |
| scheduler_->SetBeginFrameSource(source); |
| } |
| } |
| |
| void ProxyImpl::DidReceiveCompositorFrameAckOnImplThread() { |
| TRACE_EVENT0("cc,benchmark", |
| "ProxyImpl::DidReceiveCompositorFrameAckOnImplThread"); |
| DCHECK(IsImplThread()); |
| scheduler_->DidReceiveCompositorFrameAck(); |
| MainThreadTaskRunner()->PostTask( |
| FROM_HERE, base::BindOnce(&ProxyMain::DidReceiveCompositorFrameAck, |
| proxy_main_frame_sink_bound_weak_ptr_)); |
| } |
| |
| void ProxyImpl::OnCanDrawStateChanged(bool can_draw) { |
| TRACE_EVENT1("cc", "ProxyImpl::OnCanDrawStateChanged", "can_draw", can_draw); |
| DCHECK(IsImplThread()); |
| scheduler_->SetCanDraw(can_draw); |
| } |
| |
| void ProxyImpl::NotifyReadyToActivate() { |
| TRACE_EVENT0("cc", "ProxyImpl::NotifyReadyToActivate"); |
| DCHECK(IsImplThread()); |
| scheduler_->NotifyReadyToActivate(); |
| } |
| |
| void ProxyImpl::NotifyReadyToDraw() { |
| TRACE_EVENT0("cc", "ProxyImpl::NotifyReadyToDraw"); |
| DCHECK(IsImplThread()); |
| scheduler_->NotifyReadyToDraw(); |
| } |
| |
| void ProxyImpl::SetNeedsRedrawOnImplThread() { |
| TRACE_EVENT0("cc", "ProxyImpl::SetNeedsRedrawOnImplThread"); |
| DCHECK(IsImplThread()); |
| scheduler_->SetNeedsRedraw(); |
| } |
| |
| void ProxyImpl::SetNeedsOneBeginImplFrameOnImplThread() { |
| TRACE_EVENT0("cc", "ProxyImpl::SetNeedsOneBeginImplFrameOnImplThread"); |
| DCHECK(IsImplThread()); |
| scheduler_->SetNeedsOneBeginImplFrame(); |
| } |
| |
| void ProxyImpl::SetNeedsPrepareTilesOnImplThread() { |
| DCHECK(IsImplThread()); |
| scheduler_->SetNeedsPrepareTiles(); |
| } |
| |
| void ProxyImpl::SetNeedsCommitOnImplThread() { |
| TRACE_EVENT0("cc", "ProxyImpl::SetNeedsCommitOnImplThread"); |
| DCHECK(IsImplThread()); |
| scheduler_->SetNeedsBeginMainFrame(); |
| } |
| |
| void ProxyImpl::SetVideoNeedsBeginFrames(bool needs_begin_frames) { |
| TRACE_EVENT1("cc", "ProxyImpl::SetVideoNeedsBeginFrames", |
| "needs_begin_frames", needs_begin_frames); |
| DCHECK(IsImplThread()); |
| // In tests the layer tree is destroyed after the scheduler is. |
| if (scheduler_) |
| scheduler_->SetVideoNeedsBeginFrames(needs_begin_frames); |
| } |
| |
| void ProxyImpl::PostAnimationEventsToMainThreadOnImplThread( |
| std::unique_ptr<MutatorEvents> events) { |
| TRACE_EVENT0("cc", "ProxyImpl::PostAnimationEventsToMainThreadOnImplThread"); |
| DCHECK(IsImplThread()); |
| MainThreadTaskRunner()->PostTask( |
| FROM_HERE, base::BindOnce(&ProxyMain::SetAnimationEvents, |
| proxy_main_weak_ptr_, base::Passed(&events))); |
| } |
| |
| size_t ProxyImpl::CompositedAnimationsCount() const { |
| return host_impl_->mutator_host()->CompositedAnimationsCount(); |
| } |
| |
| size_t ProxyImpl::MainThreadAnimationsCount() const { |
| return host_impl_->mutator_host()->MainThreadAnimationsCount(); |
| } |
| |
| bool ProxyImpl::CurrentFrameHadRAF() const { |
| return host_impl_->mutator_host()->CurrentFrameHadRAF(); |
| } |
| |
| bool ProxyImpl::NextFrameHasPendingRAF() const { |
| return host_impl_->mutator_host()->NextFrameHasPendingRAF(); |
| } |
| |
| bool ProxyImpl::IsInsideDraw() { |
| return inside_draw_; |
| } |
| |
| void ProxyImpl::RenewTreePriority() { |
| DCHECK(IsImplThread()); |
| const bool user_interaction_in_progress = |
| host_impl_->pinch_gesture_active() || |
| host_impl_->page_scale_animation_active() || |
| host_impl_->IsActivelyScrolling(); |
| |
| if (host_impl_->ukm_manager()) { |
| host_impl_->ukm_manager()->SetUserInteractionInProgress( |
| user_interaction_in_progress); |
| } |
| |
| // Schedule expiration if smoothness currently takes priority. |
| if (user_interaction_in_progress) |
| smoothness_priority_expiration_notifier_.Schedule(); |
| |
| // We use the same priority for both trees by default. |
| TreePriority tree_priority = SAME_PRIORITY_FOR_BOTH_TREES; |
| |
| // Smoothness takes priority if we have an expiration for it scheduled. |
| if (smoothness_priority_expiration_notifier_.HasPendingNotification()) |
| tree_priority = SMOOTHNESS_TAKES_PRIORITY; |
| |
| // New content always takes priority when there is an invalid viewport size or |
| // ui resources have been evicted. |
| if (host_impl_->active_tree()->ViewportSizeInvalid() || |
| host_impl_->EvictedUIResourcesExist() || input_throttled_until_commit_) { |
| // Once we enter NEW_CONTENTS_TAKES_PRIORITY mode, visible tiles on active |
| // tree might be freed. We need to set RequiresHighResToDraw to ensure that |
| // high res tiles will be required to activate pending tree. |
| host_impl_->SetRequiresHighResToDraw(); |
| tree_priority = NEW_CONTENT_TAKES_PRIORITY; |
| } |
| |
| host_impl_->SetTreePriority(tree_priority); |
| |
| // Only put the scheduler in impl latency prioritization mode if we don't |
| // have a scroll listener. This gives the scroll listener a better chance of |
| // handling scroll updates within the same frame. The tree itself is still |
| // kept in prefer smoothness mode to allow checkerboarding. |
| ScrollHandlerState scroll_handler_state = |
| host_impl_->scroll_affects_scroll_handler() |
| ? ScrollHandlerState::SCROLL_AFFECTS_SCROLL_HANDLER |
| : ScrollHandlerState::SCROLL_DOES_NOT_AFFECT_SCROLL_HANDLER; |
| scheduler_->SetTreePrioritiesAndScrollState(tree_priority, |
| scroll_handler_state); |
| } |
| |
| void ProxyImpl::PostDelayedAnimationTaskOnImplThread(const base::Closure& task, |
| base::TimeDelta delay) { |
| DCHECK(IsImplThread()); |
| task_runner_provider_->ImplThreadTaskRunner()->PostDelayedTask(FROM_HERE, |
| task, delay); |
| } |
| |
| void ProxyImpl::DidActivateSyncTree() { |
| TRACE_EVENT0("cc", "ProxyImpl::DidActivateSyncTreeOnImplThread"); |
| DCHECK(IsImplThread()); |
| |
| if (activation_completion_event_) { |
| TRACE_EVENT_INSTANT0("cc", "ReleaseCommitbyActivation", |
| TRACE_EVENT_SCOPE_THREAD); |
| activation_completion_event_->Signal(); |
| activation_completion_event_ = nullptr; |
| } |
| } |
| |
| void ProxyImpl::WillPrepareTiles() { |
| DCHECK(IsImplThread()); |
| scheduler_->WillPrepareTiles(); |
| } |
| |
| void ProxyImpl::DidPrepareTiles() { |
| DCHECK(IsImplThread()); |
| scheduler_->DidPrepareTiles(); |
| } |
| |
| void ProxyImpl::DidCompletePageScaleAnimationOnImplThread() { |
| DCHECK(IsImplThread()); |
| MainThreadTaskRunner()->PostTask( |
| FROM_HERE, base::BindOnce(&ProxyMain::DidCompletePageScaleAnimation, |
| proxy_main_weak_ptr_)); |
| } |
| |
| void ProxyImpl::OnDrawForLayerTreeFrameSink(bool resourceless_software_draw) { |
| DCHECK(IsImplThread()); |
| scheduler_->OnDrawForLayerTreeFrameSink(resourceless_software_draw); |
| } |
| |
| void ProxyImpl::NeedsImplSideInvalidation(bool needs_first_draw_on_activation) { |
| DCHECK(IsImplThread()); |
| scheduler_->SetNeedsImplSideInvalidation(needs_first_draw_on_activation); |
| } |
| |
| void ProxyImpl::NotifyImageDecodeRequestFinished() { |
| DCHECK(IsImplThread()); |
| SetNeedsCommitOnImplThread(); |
| } |
| |
| void ProxyImpl::DidPresentCompositorFrameOnImplThread( |
| uint32_t frame_token, |
| std::vector<LayerTreeHost::PresentationTimeCallback> callbacks, |
| const gfx::PresentationFeedback& feedback) { |
| MainThreadTaskRunner()->PostTask( |
| FROM_HERE, base::BindOnce(&ProxyMain::DidPresentCompositorFrame, |
| proxy_main_weak_ptr_, frame_token, |
| std::move(callbacks), feedback)); |
| } |
| |
| bool ProxyImpl::WillBeginImplFrame(const viz::BeginFrameArgs& args) { |
| DCHECK(IsImplThread()); |
| return host_impl_->WillBeginImplFrame(args); |
| } |
| |
| void ProxyImpl::DidFinishImplFrame() { |
| DCHECK(IsImplThread()); |
| host_impl_->DidFinishImplFrame(); |
| } |
| |
| void ProxyImpl::DidNotProduceFrame(const viz::BeginFrameAck& ack) { |
| DCHECK(IsImplThread()); |
| host_impl_->DidNotProduceFrame(ack); |
| } |
| |
| void ProxyImpl::ScheduledActionSendBeginMainFrame( |
| const viz::BeginFrameArgs& args) { |
| DCHECK(IsImplThread()); |
| unsigned int begin_frame_id = nextBeginFrameId++; |
| benchmark_instrumentation::ScopedBeginFrameTask begin_frame_task( |
| benchmark_instrumentation::kSendBeginFrame, begin_frame_id); |
| std::unique_ptr<BeginMainFrameAndCommitState> begin_main_frame_state( |
| new BeginMainFrameAndCommitState); |
| begin_main_frame_state->begin_frame_id = begin_frame_id; |
| begin_main_frame_state->begin_frame_args = args; |
| begin_main_frame_state->scroll_info = host_impl_->ProcessScrollDeltas(); |
| begin_main_frame_state->evicted_ui_resources = |
| host_impl_->EvictedUIResourcesExist(); |
| begin_main_frame_state->completed_image_decode_requests = |
| host_impl_->TakeCompletedImageDecodeRequests(); |
| MainThreadTaskRunner()->PostTask( |
| FROM_HERE, |
| base::BindOnce(&ProxyMain::BeginMainFrame, proxy_main_weak_ptr_, |
| base::Passed(&begin_main_frame_state))); |
| host_impl_->DidSendBeginMainFrame(); |
| devtools_instrumentation::DidRequestMainThreadFrame(layer_tree_host_id_); |
| } |
| |
| DrawResult ProxyImpl::ScheduledActionDrawIfPossible() { |
| TRACE_EVENT0("cc", "ProxyImpl::ScheduledActionDraw"); |
| DCHECK(IsImplThread()); |
| |
| // The scheduler should never generate this call when it can't draw. |
| DCHECK(host_impl_->CanDraw()); |
| |
| bool forced_draw = false; |
| return DrawInternal(forced_draw); |
| } |
| |
| DrawResult ProxyImpl::ScheduledActionDrawForced() { |
| TRACE_EVENT0("cc", "ProxyImpl::ScheduledActionDrawForced"); |
| DCHECK(IsImplThread()); |
| bool forced_draw = true; |
| return DrawInternal(forced_draw); |
| } |
| |
| void ProxyImpl::ScheduledActionCommit() { |
| TRACE_EVENT0("cc", "ProxyImpl::ScheduledActionCommit"); |
| DCHECK(IsImplThread()); |
| DCHECK(IsMainThreadBlocked()); |
| DCHECK(commit_completion_event_); |
| |
| // Relax the cross-thread access restriction to non-thread-safe RefCount. |
| // It's safe since the main thread is blocked while a main-thread-bound |
| // compositor stuff are accessed from the impl thread. |
| base::ScopedAllowCrossThreadRefCountAccess |
| allow_cross_thread_ref_count_access; |
| |
| host_impl_->BeginCommit(); |
| blocked_main_commit().layer_tree_host->FinishCommitOnImplThread( |
| host_impl_.get()); |
| |
| // Remove the LayerTreeHost reference before the completion event is signaled |
| // and cleared. This is necessary since blocked_main_commit() allows access |
| // only while we have the completion event to ensure the main thread is |
| // blocked for a commit. |
| blocked_main_commit().layer_tree_host = nullptr; |
| |
| if (commit_completion_waits_for_activation_) { |
| // For some layer types in impl-side painting, the commit is held until the |
| // sync tree is activated. It's also possible that the sync tree has |
| // already activated if there was no work to be done. |
| TRACE_EVENT_INSTANT0("cc", "HoldCommit", TRACE_EVENT_SCOPE_THREAD); |
| commit_completion_waits_for_activation_ = false; |
| activation_completion_event_ = commit_completion_event_; |
| } else { |
| commit_completion_event_->Signal(); |
| } |
| commit_completion_event_ = nullptr; |
| |
| scheduler_->DidCommit(); |
| |
| // Delay this step until afer the main thread has been released as it's |
| // often a good bit of work to update the tree and prepare the new frame. |
| host_impl_->CommitComplete(); |
| |
| SetInputThrottledUntilCommitOnImpl(false); |
| |
| next_frame_is_newly_committed_frame_ = true; |
| } |
| |
| void ProxyImpl::ScheduledActionActivateSyncTree() { |
| TRACE_EVENT0("cc", "ProxyImpl::ScheduledActionActivateSyncTree"); |
| DCHECK(IsImplThread()); |
| host_impl_->ActivateSyncTree(); |
| } |
| |
| void ProxyImpl::ScheduledActionBeginLayerTreeFrameSinkCreation() { |
| TRACE_EVENT0("cc", |
| "ProxyImpl::ScheduledActionBeginLayerTreeFrameSinkCreation"); |
| DCHECK(IsImplThread()); |
| MainThreadTaskRunner()->PostTask( |
| FROM_HERE, base::BindOnce(&ProxyMain::RequestNewLayerTreeFrameSink, |
| proxy_main_weak_ptr_)); |
| } |
| |
| void ProxyImpl::ScheduledActionPrepareTiles() { |
| TRACE_EVENT0("cc", "ProxyImpl::ScheduledActionPrepareTiles"); |
| DCHECK(IsImplThread()); |
| host_impl_->PrepareTiles(); |
| } |
| |
| void ProxyImpl::ScheduledActionInvalidateLayerTreeFrameSink() { |
| TRACE_EVENT0("cc", "ProxyImpl::ScheduledActionInvalidateLayerTreeFrameSink"); |
| DCHECK(IsImplThread()); |
| host_impl_->InvalidateLayerTreeFrameSink(); |
| } |
| |
| void ProxyImpl::ScheduledActionPerformImplSideInvalidation() { |
| TRACE_EVENT0("cc", "ProxyImpl::ScheduledActionPerformImplSideInvalidation"); |
| DCHECK(IsImplThread()); |
| host_impl_->InvalidateContentOnImplSide(); |
| } |
| |
| void ProxyImpl::SendBeginMainFrameNotExpectedSoon() { |
| DCHECK(IsImplThread()); |
| MainThreadTaskRunner()->PostTask( |
| FROM_HERE, base::BindOnce(&ProxyMain::BeginMainFrameNotExpectedSoon, |
| proxy_main_weak_ptr_)); |
| } |
| |
| void ProxyImpl::ScheduledActionBeginMainFrameNotExpectedUntil( |
| base::TimeTicks time) { |
| DCHECK(IsImplThread()); |
| MainThreadTaskRunner()->PostTask( |
| FROM_HERE, base::Bind(&ProxyMain::BeginMainFrameNotExpectedUntil, |
| proxy_main_weak_ptr_, time)); |
| } |
| |
| DrawResult ProxyImpl::DrawInternal(bool forced_draw) { |
| DCHECK(IsImplThread()); |
| DCHECK(host_impl_.get()); |
| |
| base::AutoReset<bool> mark_inside(&inside_draw_, true); |
| |
| if (host_impl_->pending_tree()) |
| host_impl_->pending_tree()->UpdateDrawProperties(); |
| |
| // This method is called on a forced draw, regardless of whether we are able |
| // to produce a frame, as the calling site on main thread is blocked until its |
| // request completes, and we signal completion here. If CanDraw() is false, we |
| // will indicate success=false to the caller, but we must still signal |
| // completion to avoid deadlock. |
| |
| // We guard PrepareToDraw() with CanDraw() because it always returns a valid |
| // frame, so can only be used when such a frame is possible. Since |
| // DrawLayers() depends on the result of PrepareToDraw(), it is guarded on |
| // CanDraw() as well. |
| |
| LayerTreeHostImpl::FrameData frame; |
| frame.begin_frame_ack = scheduler_->CurrentBeginFrameAckForActiveTree(); |
| bool draw_frame = false; |
| |
| DrawResult result; |
| if (host_impl_->CanDraw()) { |
| result = host_impl_->PrepareToDraw(&frame); |
| draw_frame = forced_draw || result == DRAW_SUCCESS; |
| } else { |
| result = DRAW_ABORTED_CANT_DRAW; |
| } |
| |
| if (draw_frame) { |
| if (host_impl_->DrawLayers(&frame)) |
| // Drawing implies we submitted a frame to the LayerTreeFrameSink. |
| scheduler_->DidSubmitCompositorFrame(); |
| result = DRAW_SUCCESS; |
| } else { |
| DCHECK_NE(DRAW_SUCCESS, result); |
| } |
| |
| host_impl_->DidDrawAllLayers(frame); |
| |
| bool start_ready_animations = draw_frame; |
| host_impl_->UpdateAnimationState(start_ready_animations); |
| |
| // Tell the main thread that the the newly-commited frame was drawn. |
| if (next_frame_is_newly_committed_frame_) { |
| next_frame_is_newly_committed_frame_ = false; |
| MainThreadTaskRunner()->PostTask( |
| FROM_HERE, base::BindOnce(&ProxyMain::DidCommitAndDrawFrame, |
| proxy_main_weak_ptr_)); |
| } |
| |
| DCHECK_NE(INVALID_RESULT, result); |
| return result; |
| } |
| |
| bool ProxyImpl::IsImplThread() const { |
| return task_runner_provider_->IsImplThread(); |
| } |
| |
| bool ProxyImpl::IsMainThreadBlocked() const { |
| return task_runner_provider_->IsMainThreadBlocked(); |
| } |
| |
| ProxyImpl::BlockedMainCommitOnly& ProxyImpl::blocked_main_commit() { |
| DCHECK(IsMainThreadBlocked() && commit_completion_event_); |
| return main_thread_blocked_commit_vars_unsafe_; |
| } |
| |
| base::SingleThreadTaskRunner* ProxyImpl::MainThreadTaskRunner() { |
| return task_runner_provider_->MainThreadTaskRunner(); |
| } |
| |
| void ProxyImpl::SetURLForUkm(const GURL& url) { |
| DCHECK(IsImplThread()); |
| if (!host_impl_->ukm_manager()) |
| return; |
| |
| // The active tree might still be from content for the previous page when the |
| // recorder is updated here, since new content will be pushed with the next |
| // main frame. But we should only get a few impl frames wrong here in that |
| // case. Also, since checkerboard stats are only recorded with user |
| // interaction, it must be in progress when the navigation commits for this |
| // case to occur. |
| host_impl_->ukm_manager()->SetSourceURL(url); |
| } |
| |
| void ProxyImpl::ClearHistoryOnNavigation() { |
| DCHECK(IsImplThread()); |
| DCHECK(IsMainThreadBlocked()); |
| scheduler_->ClearHistoryOnNavigation(); |
| } |
| |
| void ProxyImpl::SetRenderFrameObserver( |
| std::unique_ptr<RenderFrameMetadataObserver> observer) { |
| host_impl_->SetRenderFrameObserver(std::move(observer)); |
| } |
| |
| } // namespace cc |