| // Copyright 2019 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/metrics/compositor_frame_reporting_controller.h" |
| |
| #include <utility> |
| |
| #include "base/trace_event/trace_event.h" |
| #include "base/trace_event/trace_id_helper.h" |
| #include "cc/metrics/compositor_frame_reporter.h" |
| #include "cc/metrics/dropped_frame_counter.h" |
| #include "cc/metrics/frame_sequence_tracker_collection.h" |
| #include "cc/metrics/latency_ukm_reporter.h" |
| #include "components/viz/common/frame_timing_details.h" |
| #include "components/viz/common/quads/compositor_frame_metadata.h" |
| #include "services/tracing/public/cpp/perfetto/macros.h" |
| |
| namespace cc { |
| namespace { |
| using SmoothThread = CompositorFrameReporter::SmoothThread; |
| using StageType = CompositorFrameReporter::StageType; |
| using FrameTerminationStatus = CompositorFrameReporter::FrameTerminationStatus; |
| |
| constexpr char kTraceCategory[] = "cc,benchmark"; |
| } // namespace |
| |
| CompositorFrameReportingController::CompositorFrameReportingController( |
| bool should_report_histograms, |
| bool should_report_ukm, |
| int layer_tree_host_id) |
| : should_report_histograms_(should_report_histograms), |
| layer_tree_host_id_(layer_tree_host_id), |
| latency_ukm_reporter_(std::make_unique<LatencyUkmReporter>()) { |
| if (should_report_ukm) { |
| // UKM metrics should be reported if and only if `latency_ukm_reporter` is |
| // set on `global_trackers_`. |
| global_trackers_.latency_ukm_reporter = latency_ukm_reporter_.get(); |
| } |
| } |
| |
| CompositorFrameReportingController::~CompositorFrameReportingController() { |
| base::TimeTicks now = Now(); |
| for (int i = 0; i < PipelineStage::kNumPipelineStages; ++i) { |
| if (reporters_[i]) { |
| reporters_[i]->TerminateFrame(FrameTerminationStatus::kDidNotProduceFrame, |
| now); |
| } |
| } |
| for (auto& pair : submitted_compositor_frames_) { |
| pair.reporter->TerminateFrame(FrameTerminationStatus::kDidNotPresentFrame, |
| Now()); |
| } |
| } |
| |
| CompositorFrameReportingController::SubmittedCompositorFrame:: |
| SubmittedCompositorFrame() = default; |
| CompositorFrameReportingController::SubmittedCompositorFrame:: |
| SubmittedCompositorFrame(uint32_t frame_token, |
| std::unique_ptr<CompositorFrameReporter> reporter) |
| : frame_token(frame_token), reporter(std::move(reporter)) {} |
| CompositorFrameReportingController::SubmittedCompositorFrame:: |
| ~SubmittedCompositorFrame() = default; |
| |
| CompositorFrameReportingController::SubmittedCompositorFrame:: |
| SubmittedCompositorFrame(SubmittedCompositorFrame&& other) = default; |
| |
| base::TimeTicks CompositorFrameReportingController::Now() const { |
| return tick_clock_->NowTicks(); |
| } |
| |
| bool CompositorFrameReportingController::HasReporterAt( |
| PipelineStage stage) const { |
| return !!reporters_[stage].get(); |
| } |
| |
| void CompositorFrameReportingController::ProcessSkippedFramesIfNecessary( |
| const viz::BeginFrameArgs& args) { |
| const auto& previous_frame = last_started_compositor_frame_.args; |
| if (previous_frame.IsValid() && |
| previous_frame.frame_id.source_id == args.frame_id.source_id) { |
| CreateReportersForDroppedFrames(previous_frame, args); |
| } |
| |
| last_started_compositor_frame_.args = args; |
| last_started_compositor_frame_.scrolling_thread = scrolling_thread_; |
| last_started_compositor_frame_.active_trackers = active_trackers_; |
| last_started_compositor_frame_.smooth_thread = GetSmoothThread(); |
| } |
| |
| void CompositorFrameReportingController::WillBeginImplFrame( |
| const viz::BeginFrameArgs& args) { |
| ProcessSkippedFramesIfNecessary(args); |
| ReportMultipleSwaps(args.frame_time, last_interval_); |
| last_interval_ = args.interval; |
| |
| base::TimeTicks begin_time = Now(); |
| if (reporters_[PipelineStage::kBeginImplFrame]) { |
| auto& reporter = reporters_[PipelineStage::kBeginImplFrame]; |
| DCHECK(reporter->did_finish_impl_frame()); |
| // TODO(1144353): This is a speculative fix. This code should only be |
| // reached after the previous frame have been explicitly marked as 'did not |
| // produce frame', i.e. this code should have a DCHECK instead of a |
| // conditional: |
| // DCHECK(reporter->did_not_produce_frame()). |
| if (reporter->did_not_produce_frame()) { |
| reporter->TerminateFrame(FrameTerminationStatus::kDidNotProduceFrame, |
| reporter->did_not_produce_frame_time()); |
| } else { |
| reporter->TerminateFrame(FrameTerminationStatus::kReplacedByNewReporter, |
| Now()); |
| } |
| } |
| auto reporter = std::make_unique<CompositorFrameReporter>( |
| active_trackers_, args, should_report_histograms_, GetSmoothThread(), |
| scrolling_thread_, layer_tree_host_id_, global_trackers_); |
| reporter->set_tick_clock(tick_clock_); |
| reporter->StartStage(StageType::kBeginImplFrameToSendBeginMainFrame, |
| begin_time); |
| reporters_[PipelineStage::kBeginImplFrame] = std::move(reporter); |
| } |
| |
| void CompositorFrameReportingController::WillBeginMainFrame( |
| const viz::BeginFrameArgs& args) { |
| if (reporters_[PipelineStage::kBeginImplFrame]) { |
| // We need to use .get() below because operator<< in std::unique_ptr is a |
| // C++20 feature. |
| DCHECK_NE(reporters_[PipelineStage::kBeginMainFrame].get(), |
| reporters_[PipelineStage::kBeginImplFrame].get()); |
| DCHECK_EQ(reporters_[PipelineStage::kBeginImplFrame]->frame_id(), |
| args.frame_id); |
| reporters_[PipelineStage::kBeginImplFrame]->StartStage( |
| StageType::kSendBeginMainFrameToCommit, Now()); |
| AdvanceReporterStage(PipelineStage::kBeginImplFrame, |
| PipelineStage::kBeginMainFrame); |
| } else { |
| // In this case we have already submitted the ImplFrame, but we received |
| // beginMain frame before next BeginImplFrame (Not reached the ImplFrame |
| // deadline yet). So will start a new reporter at BeginMainFrame, and use |
| // the state(s) from the ImplFrame where necessary. |
| auto scrolling_thread = scrolling_thread_; |
| auto active_trackers = active_trackers_; |
| auto smooth_thread = GetSmoothThread(); |
| if (args.frame_id == last_started_compositor_frame_.args.frame_id) { |
| // TODO(1277547): Instead of replacing all current information with the |
| // older information from when the impl-frame started, merge the two sets |
| // of information that makes sense. |
| scrolling_thread = last_started_compositor_frame_.scrolling_thread; |
| active_trackers = last_started_compositor_frame_.active_trackers; |
| smooth_thread = last_started_compositor_frame_.smooth_thread; |
| } |
| auto reporter = std::make_unique<CompositorFrameReporter>( |
| active_trackers, args, should_report_histograms_, smooth_thread, |
| scrolling_thread, layer_tree_host_id_, global_trackers_); |
| reporter->set_tick_clock(tick_clock_); |
| reporter->StartStage(StageType::kSendBeginMainFrameToCommit, Now()); |
| reporters_[PipelineStage::kBeginMainFrame] = std::move(reporter); |
| } |
| } |
| |
| void CompositorFrameReportingController::BeginMainFrameAborted( |
| const viz::BeginFrameId& id, |
| CommitEarlyOutReason reason) { |
| auto& reporter = reporters_[PipelineStage::kBeginMainFrame]; |
| DCHECK(reporter); |
| DCHECK_EQ(reporter->frame_id(), id); |
| reporter->OnAbortBeginMainFrame(Now()); |
| |
| if (reason == CommitEarlyOutReason::FINISHED_NO_UPDATES) |
| DidNotProduceFrame(id, FrameSkippedReason::kNoDamage); |
| } |
| |
| void CompositorFrameReportingController::WillCommit() { |
| DCHECK(reporters_[PipelineStage::kBeginMainFrame]); |
| reporters_[PipelineStage::kBeginMainFrame]->StartStage(StageType::kCommit, |
| Now()); |
| } |
| |
| void CompositorFrameReportingController::DidCommit() { |
| DCHECK(reporters_[PipelineStage::kBeginMainFrame]); |
| reporters_[PipelineStage::kBeginMainFrame]->StartStage( |
| StageType::kEndCommitToActivation, Now()); |
| AdvanceReporterStage(PipelineStage::kBeginMainFrame, PipelineStage::kCommit); |
| } |
| |
| void CompositorFrameReportingController::WillInvalidateOnImplSide() { |
| // Allows for activation without committing. |
| // TODO(alsan): Report latency of impl side invalidations. |
| next_activate_has_invalidation_ = true; |
| } |
| |
| void CompositorFrameReportingController::WillActivate() { |
| DCHECK(reporters_[PipelineStage::kCommit] || next_activate_has_invalidation_); |
| if (!reporters_[PipelineStage::kCommit]) |
| return; |
| reporters_[PipelineStage::kCommit]->StartStage(StageType::kActivation, Now()); |
| } |
| |
| void CompositorFrameReportingController::DidActivate() { |
| DCHECK(reporters_[PipelineStage::kCommit] || next_activate_has_invalidation_); |
| next_activate_has_invalidation_ = false; |
| if (!reporters_[PipelineStage::kCommit]) |
| return; |
| reporters_[PipelineStage::kCommit]->StartStage( |
| StageType::kEndActivateToSubmitCompositorFrame, Now()); |
| AdvanceReporterStage(PipelineStage::kCommit, PipelineStage::kActivate); |
| } |
| |
| void CompositorFrameReportingController::DidSubmitCompositorFrame( |
| uint32_t frame_token, |
| base::TimeTicks submit_time, |
| const viz::BeginFrameId& current_frame_id, |
| const viz::BeginFrameId& last_activated_frame_id, |
| EventMetricsSet events_metrics, |
| bool has_missing_content) { |
| bool is_activated_frame_new = |
| (last_activated_frame_id != last_submitted_frame_id_); |
| |
| // It is possible to submit a CompositorFrame containing outputs from two |
| // different begin-frames: an begin-main-frame that was blocked on the |
| // main-thread, and another one for the compositor thread. |
| std::unique_ptr<CompositorFrameReporter> main_reporter; |
| std::unique_ptr<CompositorFrameReporter> impl_reporter; |
| |
| // If |is_activated_frame_new| is true, |main_reporter| is guaranteed to |
| // be set, and |impl_reporter| may or may not be set; otherwise, |
| // |impl_reporter| is guaranteed to be set, and |main_reporter| will not be |
| // set. |
| if (is_activated_frame_new) { |
| DCHECK_EQ(reporters_[PipelineStage::kActivate]->frame_id(), |
| last_activated_frame_id); |
| // The reporter in activate state can be submitted |
| main_reporter = std::move(reporters_[PipelineStage::kActivate]); |
| last_submitted_frame_id_ = last_activated_frame_id; |
| } else { |
| DCHECK(!reporters_[PipelineStage::kActivate]); |
| } |
| |
| // |main_reporter| can be for a previous BeginFrameArgs (i.e. not for |
| // |current_frame_id|), in which case it is necessary to also report metrics |
| // for the reporter representing |current_frame_id|. Following are the |
| // possibilities: |
| // 1) the main-thread did not request any updates (i.e. a 'begin main frame' |
| // was not issued). The reporter for |current_frame_id| should still be in |
| // the 'impl frame' stage. |
| // 2) the 'begin main frame' was issued, but the main-thread did not have any |
| // updates (i.e. the 'begin main frame' was aborted). The reporter for |
| // |current_frame_id| should be in the 'main frame' stage, and it will |
| // have been aborted. |
| // 3) main-thread is still processing 'begin main frame'. The reporter for |
| // |current_frame_id| should be in either the 'main frame' or 'commit' |
| // stage. |
| if (CanSubmitImplFrame(current_frame_id)) { |
| auto& reporter = reporters_[PipelineStage::kBeginImplFrame]; |
| reporter->StartStage(StageType::kEndActivateToSubmitCompositorFrame, |
| reporter->impl_frame_finish_time()); |
| AdvanceReporterStage(PipelineStage::kBeginImplFrame, |
| PipelineStage::kActivate); |
| impl_reporter = std::move(reporters_[PipelineStage::kActivate]); |
| CompositorFrameReporter* partial_update_decider = |
| GetOutstandingUpdatesFromMain(current_frame_id); |
| if (partial_update_decider) |
| impl_reporter->SetPartialUpdateDecider(partial_update_decider); |
| } else if (CanSubmitMainFrame(current_frame_id)) { |
| auto& reporter = reporters_[PipelineStage::kBeginMainFrame]; |
| reporter->StartStage(StageType::kEndActivateToSubmitCompositorFrame, |
| reporter->impl_frame_finish_time()); |
| AdvanceReporterStage(PipelineStage::kBeginMainFrame, |
| PipelineStage::kActivate); |
| impl_reporter = std::move(reporters_[PipelineStage::kActivate]); |
| } else { |
| auto reporter = RestoreReporterAtBeginImpl(current_frame_id); |
| // The method will return nullptr if Impl reporter has been submitted |
| // prior to BeginMainFrame. |
| if (reporter) { |
| reporter->StartStage(StageType::kEndActivateToSubmitCompositorFrame, |
| reporter->impl_frame_finish_time()); |
| impl_reporter = std::move(reporter); |
| } |
| } |
| |
| #if DCHECK_IS_ON() |
| if (!events_metrics.main_event_metrics.empty()) { |
| DCHECK(main_reporter); |
| } |
| |
| if (impl_reporter) { |
| DCHECK_EQ(impl_reporter->frame_id(), current_frame_id); |
| if (main_reporter) { |
| DCHECK_NE(main_reporter->frame_id(), current_frame_id); |
| } |
| } |
| #endif |
| |
| // When |impl_reporter| does not exist, but there are still impl-side metrics, |
| // merge the main and impl metrics and pass the combined vector into |
| // |main_reporter|. |
| if (!impl_reporter && !events_metrics.impl_event_metrics.empty()) { |
| DCHECK(main_reporter); |
| // If there are impl events, there must be a reporter with |
| // |current_frame_id|. |
| DCHECK_EQ(main_reporter->frame_id(), current_frame_id); |
| events_metrics.main_event_metrics.reserve( |
| events_metrics.main_event_metrics.size() + |
| events_metrics.impl_event_metrics.size()); |
| events_metrics.main_event_metrics.insert( |
| events_metrics.main_event_metrics.end(), |
| std::make_move_iterator(events_metrics.impl_event_metrics.begin()), |
| std::make_move_iterator(events_metrics.impl_event_metrics.end())); |
| } |
| |
| if (main_reporter) { |
| main_reporter->StartStage( |
| StageType::kSubmitCompositorFrameToPresentationCompositorFrame, |
| submit_time); |
| main_reporter->AddEventsMetrics( |
| std::move(events_metrics.main_event_metrics)); |
| main_reporter->set_has_missing_content(has_missing_content); |
| submitted_compositor_frames_.emplace_back(frame_token, |
| std::move(main_reporter)); |
| } |
| |
| if (impl_reporter) { |
| impl_reporter->EnableCompositorOnlyReporting(); |
| impl_reporter->StartStage( |
| StageType::kSubmitCompositorFrameToPresentationCompositorFrame, |
| submit_time); |
| impl_reporter->AddEventsMetrics( |
| std::move(events_metrics.impl_event_metrics)); |
| impl_reporter->set_has_missing_content(has_missing_content); |
| impl_reporter->set_is_accompanied_by_main_thread_update( |
| is_activated_frame_new); |
| submitted_compositor_frames_.emplace_back(frame_token, |
| std::move(impl_reporter)); |
| } |
| } |
| |
| void CompositorFrameReportingController::DidNotProduceFrame( |
| const viz::BeginFrameId& id, |
| FrameSkippedReason skip_reason) { |
| for (auto& stage_reporter : reporters_) { |
| if (stage_reporter && stage_reporter->frame_id() == id) { |
| // The reporter will be flagged and terminated when replaced by another |
| // reporter. The reporter is not terminated immediately here because it |
| // can still end up producing a frame afterwards. For example, if the |
| // compositor does not have any updates, and the main-thread takes too |
| // long, then DidNotProduceFrame() is called for the reporter in the |
| // BeginMain stage, but the main-thread can make updates, which can be |
| // submitted with the next frame. |
| stage_reporter->OnDidNotProduceFrame(skip_reason); |
| if (skip_reason == FrameSkippedReason::kWaitingOnMain) |
| SetPartialUpdateDeciderWhenWaitingOnMain(stage_reporter); |
| |
| break; |
| } |
| } |
| } |
| |
| void CompositorFrameReportingController:: |
| SetPartialUpdateDeciderWhenWaitingOnMain( |
| std::unique_ptr<CompositorFrameReporter>& stage_reporter) { |
| // If the compositor has no updates, and the main-thread has not responded |
| // to the begin-main-frame yet, then depending on main thread having |
| // update or not this would be a NoFrameProduced or a DroppedFrame. To |
| // handle this case , keep the reporter for the main-thread, but recreate |
| // a reporter for the current frame and link it to the reporter it depends |
| // on. |
| auto reporter = RestoreReporterAtBeginImpl(stage_reporter->frame_id()); |
| if (reporter) { |
| reporter->OnDidNotProduceFrame(FrameSkippedReason::kWaitingOnMain); |
| reporter->TerminateFrame(FrameTerminationStatus::kDidNotProduceFrame, |
| Now()); |
| stage_reporter->AdoptReporter(std::move(reporter)); |
| } else { |
| // The stage_reporter in this case was waiting for main, so needs to |
| // be adopted by the reporter which is waiting on Main thread's work |
| CompositorFrameReporter* partial_update_decider = |
| GetOutstandingUpdatesFromMain(stage_reporter->frame_id()); |
| if (partial_update_decider) { |
| stage_reporter->SetPartialUpdateDecider(partial_update_decider); |
| stage_reporter->OnDidNotProduceFrame(FrameSkippedReason::kWaitingOnMain); |
| stage_reporter->TerminateFrame( |
| FrameTerminationStatus::kDidNotProduceFrame, Now()); |
| partial_update_decider->AdoptReporter(std::move(stage_reporter)); |
| } |
| } |
| } |
| |
| void CompositorFrameReportingController::TrackSwapTiming( |
| const viz::FrameTimingDetails& details) { |
| if (details.swap_timings.swap_start != base::TimeTicks()) { |
| if (latest_swap_times_.empty() || |
| latest_swap_times_.back() < details.swap_timings.swap_start) |
| latest_swap_times_.push(details.swap_timings.swap_start); |
| } |
| |
| // Making sure the queue would not keep growing in size. |
| DCHECK_LE(latest_swap_times_.size(), 10u); |
| } |
| |
| void CompositorFrameReportingController::ReportMultipleSwaps( |
| base::TimeTicks begin_frame_time, |
| base::TimeDelta interval) { |
| while (!latest_swap_times_.empty() && |
| latest_swap_times_.front() <= begin_frame_time - interval) { |
| latest_swap_times_.pop(); |
| } |
| |
| if (latest_swap_times_.empty()) |
| return; |
| |
| if (latest_swap_times_.size() > 1) { |
| base::TimeDelta swap_delta = |
| latest_swap_times_.back() - latest_swap_times_.front(); |
| |
| if (swap_delta < interval) { |
| UMA_HISTOGRAM_PERCENTAGE("GPU.MultipleSwapsDelta", |
| swap_delta * 100.0 / interval); |
| |
| const auto trace_track = |
| perfetto::Track(base::trace_event::GetNextGlobalTraceId()); |
| TRACE_EVENT_BEGIN(kTraceCategory, "MultipleSwaps", trace_track, |
| latest_swap_times_.front()); |
| TRACE_EVENT_END(kTraceCategory, trace_track, latest_swap_times_.back()); |
| } |
| } |
| } |
| |
| void CompositorFrameReportingController::OnFinishImplFrame( |
| const viz::BeginFrameId& id) { |
| for (auto& reporter : reporters_) { |
| if (reporter && reporter->frame_id() == id) { |
| reporter->OnFinishImplFrame(Now()); |
| return; |
| } |
| } |
| } |
| |
| void CompositorFrameReportingController::DidPresentCompositorFrame( |
| uint32_t frame_token, |
| const viz::FrameTimingDetails& details) { |
| bool feedback_failed = details.presentation_feedback.failed(); |
| |
| if (!feedback_failed) |
| TrackSwapTiming(details); |
| |
| for (auto submitted_frame = submitted_compositor_frames_.begin(); |
| submitted_frame != submitted_compositor_frames_.end() && |
| !viz::FrameTokenGT(submitted_frame->frame_token, frame_token);) { |
| bool is_earlier_frame = submitted_frame->frame_token != frame_token; |
| |
| // If the presentation feedback is a failure, earlier frames should still be |
| // left in the queue as they still might end up being presented |
| // successfully. Skip to the next frame. |
| if (feedback_failed && is_earlier_frame) { |
| submitted_frame++; |
| continue; |
| } |
| |
| auto termination_status = feedback_failed |
| ? FrameTerminationStatus::kDidNotPresentFrame |
| : FrameTerminationStatus::kPresentedFrame; |
| |
| // If this is an earlier frame, presentation feedback has been successful |
| // which means this earlier frame should be considered dropped. |
| if (is_earlier_frame) |
| termination_status = FrameTerminationStatus::kDidNotPresentFrame; |
| |
| auto& reporter = submitted_frame->reporter; |
| reporter->SetVizBreakdown(details); |
| reporter->TerminateFrame(termination_status, |
| details.presentation_feedback.timestamp); |
| |
| if (termination_status == FrameTerminationStatus::kPresentedFrame) { |
| // If there are outstanding metrics from dropped frames older than this |
| // frame, this frame would be the first frame presented after those |
| // dropped frames. So, this frame is the one presenting updates from those |
| // frames to the user and should report metrics for them. Note that since |
| // reporters for submitted but dropped frames are terminated before any |
| // following frame being presented, all events metrics that should |
| // potentially be included in this presented frame are already in |
| // `events_metrics_from_dropped_frames_`. |
| for (auto it = events_metrics_from_dropped_frames_.begin(); |
| it != events_metrics_from_dropped_frames_.end() && |
| !(reporter->frame_id() < it->first); |
| it = events_metrics_from_dropped_frames_.erase(it)) { |
| reporter->AddEventsMetrics(std::move(it->second)); |
| } |
| |
| // For presented frames, if `reporter` was cloned from another reporter, |
| // and the original reporter is still alive, then check whether the cloned |
| // reporter has a 'partial update decider'. It is still possible for the |
| // original reporter to terminate with 'no damage', and if that happens, |
| // then the cloned reporter's 'partial update' flag will need to be reset. |
| // To allow this to happen, keep the cloned reporter alive, and hand over |
| // its ownership to the original reporter, so that the cloned reporter |
| // stays alive until the original reporter is terminated, and the cloned |
| // reporter's 'partial update' flag can be unset if necessary. This is not |
| // necessary for frames with failed presentation as we can say for sure |
| // that they are dropped and nothing will change their fate. |
| if (CompositorFrameReporter* orig_reporter = |
| reporter->partial_update_decider()) { |
| orig_reporter->AdoptReporter(std::move(reporter)); |
| } |
| } else { |
| // If the frame didn't end up being presented, keep its metrics around to |
| // be reported with the first following presented frame. |
| auto reporter_events_metrics = reporter->TakeEventsMetrics(); |
| if (!reporter_events_metrics.empty()) { |
| auto& frame_events_metrics = |
| events_metrics_from_dropped_frames_[reporter->frame_id()]; |
| frame_events_metrics.insert( |
| frame_events_metrics.end(), |
| std::make_move_iterator(reporter_events_metrics.begin()), |
| std::make_move_iterator(reporter_events_metrics.end())); |
| } |
| } |
| |
| if (feedback_failed) { |
| // When feedback is for a failed presentation, `submitted_frame` is not |
| // necessarily in the front of the queue. We will reach here only once per |
| // did-present; so, we will have 1 operation of O(n) complexity (n is the |
| // number of previous frames). |
| submitted_frame = submitted_compositor_frames_.erase(submitted_frame); |
| } else { |
| // When feedback is for a successful presentation, `submitted_frame` is in |
| // the front of the queue; so, we will have n operations of O(1) |
| // complexity for a did-present (n is the number of previous frames). |
| // `pop_front()` function is used here to shrink the queue when necessary |
| // to avoid unnecessary memory usage over time. |
| DCHECK_EQ(submitted_frame->frame_token, |
| submitted_compositor_frames_.front().frame_token); |
| submitted_compositor_frames_.pop_front(); |
| submitted_frame = submitted_compositor_frames_.begin(); |
| } |
| } |
| } |
| |
| void CompositorFrameReportingController::OnStoppedRequestingBeginFrames() { |
| // If the client stopped requesting begin-frames, that means the begin-frames |
| // currently being handled are no longer expected to produce any |
| // compositor-frames. So terminate the reporters. |
| auto now = Now(); |
| for (int i = 0; i < PipelineStage::kNumPipelineStages; ++i) { |
| if (reporters_[i]) { |
| reporters_[i]->OnDidNotProduceFrame(FrameSkippedReason::kNoDamage); |
| reporters_[i]->TerminateFrame(FrameTerminationStatus::kDidNotProduceFrame, |
| now); |
| } |
| } |
| last_started_compositor_frame_ = {}; |
| } |
| |
| void CompositorFrameReportingController::NotifyReadyToCommit( |
| std::unique_ptr<BeginMainFrameMetrics> details) { |
| DCHECK(reporters_[PipelineStage::kBeginMainFrame]); |
| reporters_[PipelineStage::kBeginMainFrame]->SetBlinkBreakdown( |
| std::move(details), begin_main_frame_start_time_); |
| } |
| |
| void CompositorFrameReportingController::AddActiveTracker( |
| FrameSequenceTrackerType type) { |
| active_trackers_.set(static_cast<size_t>(type)); |
| } |
| |
| void CompositorFrameReportingController::RemoveActiveTracker( |
| FrameSequenceTrackerType type) { |
| active_trackers_.reset(static_cast<size_t>(type)); |
| if (global_trackers_.dropped_frame_counter) |
| global_trackers_.dropped_frame_counter->ReportFrames(); |
| } |
| |
| void CompositorFrameReportingController::SetScrollingThread( |
| FrameInfo::SmoothEffectDrivingThread thread) { |
| scrolling_thread_ = thread; |
| } |
| |
| void CompositorFrameReportingController::SetThreadAffectsSmoothness( |
| FrameInfo::SmoothEffectDrivingThread thread_type, |
| bool affects_smoothness) { |
| auto current_smooth_thread = GetSmoothThread(); |
| |
| if (thread_type == FrameInfo::SmoothEffectDrivingThread::kCompositor) { |
| is_compositor_thread_driving_smoothness_ = affects_smoothness; |
| } else { |
| DCHECK_EQ(thread_type, FrameInfo::SmoothEffectDrivingThread::kMain); |
| is_main_thread_driving_smoothness_ = affects_smoothness; |
| } |
| |
| // keep the history for the last 3 seconds. |
| if (!smooth_thread_history_.empty()) { |
| auto expired_smooth_thread = |
| smooth_thread_history_.lower_bound(Now() - base::Seconds(3))--; |
| smooth_thread_history_.erase(smooth_thread_history_.begin(), |
| expired_smooth_thread); |
| } |
| |
| // Only trackes the history if there is a change in smooth_thread_ |
| if (current_smooth_thread != GetSmoothThread()) { |
| smooth_thread_history_.insert(std::make_pair(Now(), current_smooth_thread)); |
| } |
| } |
| |
| void CompositorFrameReportingController::AdvanceReporterStage( |
| PipelineStage start, |
| PipelineStage target) { |
| auto& reporter = reporters_[target]; |
| if (reporter) { |
| auto termination_status = FrameTerminationStatus::kReplacedByNewReporter; |
| base::TimeTicks termination_time; |
| if (reporter->did_not_produce_frame()) { |
| termination_time = reporter->did_not_produce_frame_time(); |
| termination_status = FrameTerminationStatus::kDidNotProduceFrame; |
| } else if (target == PipelineStage::kBeginMainFrame && |
| reporter->did_abort_main_frame()) { |
| termination_time = reporter->main_frame_abort_time(); |
| } else { |
| termination_time = Now(); |
| } |
| reporter->TerminateFrame(termination_status, termination_time); |
| } |
| reporters_[target] = std::move(reporters_[start]); |
| } |
| |
| bool CompositorFrameReportingController::CanSubmitImplFrame( |
| const viz::BeginFrameId& id) const { |
| #if DCHECK_IS_ON() |
| auto& reporter = reporters_[PipelineStage::kBeginImplFrame]; |
| if (reporter) { |
| DCHECK_EQ(reporter->frame_id(), id); |
| DCHECK(reporter->did_finish_impl_frame()); |
| } |
| #endif |
| return reporters_[PipelineStage::kBeginImplFrame].get() != nullptr; |
| } |
| |
| bool CompositorFrameReportingController::CanSubmitMainFrame( |
| const viz::BeginFrameId& id) const { |
| if (!reporters_[PipelineStage::kBeginMainFrame]) |
| return false; |
| auto& reporter = reporters_[PipelineStage::kBeginMainFrame]; |
| return (reporter->frame_id() == id && reporter->did_finish_impl_frame() && |
| reporter->did_abort_main_frame()); |
| } |
| |
| std::unique_ptr<CompositorFrameReporter> |
| CompositorFrameReportingController::RestoreReporterAtBeginImpl( |
| const viz::BeginFrameId& id) { |
| auto& main_reporter = reporters_[PipelineStage::kBeginMainFrame]; |
| auto& commit_reporter = reporters_[PipelineStage::kCommit]; |
| if (main_reporter && main_reporter->frame_id() == id) |
| return main_reporter->CopyReporterAtBeginImplStage(); |
| if (commit_reporter && commit_reporter->frame_id() == id) |
| return commit_reporter->CopyReporterAtBeginImplStage(); |
| return nullptr; |
| } |
| |
| void CompositorFrameReportingController::SetUkmManager(UkmManager* manager) { |
| latency_ukm_reporter_->set_ukm_manager(manager); |
| } |
| |
| CompositorFrameReporter::SmoothThread |
| CompositorFrameReportingController::GetSmoothThread() const { |
| if (is_main_thread_driving_smoothness_) { |
| return is_compositor_thread_driving_smoothness_ ? SmoothThread::kSmoothBoth |
| : SmoothThread::kSmoothMain; |
| } |
| |
| return is_compositor_thread_driving_smoothness_ |
| ? SmoothThread::kSmoothCompositor |
| : SmoothThread::kSmoothNone; |
| } |
| |
| CompositorFrameReporter::SmoothThread |
| CompositorFrameReportingController::GetSmoothThreadAtTime( |
| base::TimeTicks timestamp) const { |
| if (smooth_thread_history_.lower_bound(timestamp) == |
| smooth_thread_history_.end()) |
| return GetSmoothThread(); |
| return smooth_thread_history_.lower_bound(timestamp)->second; |
| } |
| |
| CompositorFrameReporter* |
| CompositorFrameReportingController::GetOutstandingUpdatesFromMain( |
| const viz::BeginFrameId& id) const { |
| // Any unterminated reporter in the 'main frame', or 'commit' stages, then |
| // that indicates some pending updates from the main thread. |
| { |
| const auto& reporter = reporters_[PipelineStage::kBeginMainFrame]; |
| if (reporter && reporter->frame_id() < id && |
| !reporter->did_abort_main_frame()) { |
| return reporter.get(); |
| } |
| } |
| { |
| const auto& reporter = reporters_[PipelineStage::kCommit]; |
| if (reporter && reporter->frame_id() < id) { |
| DCHECK(!reporter->did_abort_main_frame()); |
| return reporter.get(); |
| } |
| } |
| return nullptr; |
| } |
| |
| void CompositorFrameReportingController::CreateReportersForDroppedFrames( |
| const viz::BeginFrameArgs& old_args, |
| const viz::BeginFrameArgs& new_args) const { |
| DCHECK_EQ(new_args.frame_id.source_id, old_args.frame_id.source_id); |
| DCHECK_GE( |
| new_args.frame_id.sequence_number - new_args.frames_throttled_since_last, |
| old_args.frame_id.sequence_number); |
| const uint32_t interval = new_args.frame_id.sequence_number - |
| old_args.frame_id.sequence_number - |
| new_args.frames_throttled_since_last; |
| |
| // Up to 100 frames will be reported (100 closest frames to new_args). |
| const uint32_t kMaxFrameCount = 100; |
| |
| // If there are more than 100 frames skipped, ignore them |
| if (interval > kMaxFrameCount) |
| return; |
| |
| auto timestamp = old_args.frame_time + old_args.interval; |
| for (uint32_t i = 1; i < interval; ++i, timestamp += old_args.interval) { |
| auto args = viz::BeginFrameArgs::Create( |
| BEGINFRAME_FROM_HERE, old_args.frame_id.source_id, |
| old_args.frame_id.sequence_number + i, timestamp, |
| timestamp + old_args.interval, old_args.interval, |
| viz::BeginFrameArgs::NORMAL); |
| devtools_instrumentation::DidBeginFrame( |
| layer_tree_host_id_, args.frame_time, args.frame_id.sequence_number); |
| // ThreadType::kUnknown is used here for scrolling thread, because the |
| // frames reported here could have a scroll interaction active at their |
| // start time, but they were skipped and history of scrolling thread might |
| // change in the diff of start time and report time. |
| auto reporter = std::make_unique<CompositorFrameReporter>( |
| active_trackers_, args, should_report_histograms_, |
| GetSmoothThreadAtTime(timestamp), |
| FrameInfo::SmoothEffectDrivingThread::kUnknown, layer_tree_host_id_, |
| global_trackers_); |
| reporter->set_tick_clock(tick_clock_); |
| reporter->StartStage(StageType::kBeginImplFrameToSendBeginMainFrame, |
| timestamp); |
| reporter->TerminateFrame(FrameTerminationStatus::kDidNotPresentFrame, |
| args.deadline); |
| } |
| } |
| |
| void CompositorFrameReportingController::AddSortedFrame( |
| const viz::BeginFrameArgs& args, |
| const FrameInfo& frame_info) { |
| if (global_trackers_.frame_sequence_trackers) { |
| global_trackers_.frame_sequence_trackers->AddSortedFrame(args, frame_info); |
| } |
| } |
| |
| void CompositorFrameReportingController::SetDroppedFrameCounter( |
| DroppedFrameCounter* counter) { |
| global_trackers_.dropped_frame_counter = counter; |
| if (counter) { |
| counter->SetSortedFrameCallback( |
| base::BindRepeating(&CompositorFrameReportingController::AddSortedFrame, |
| base::Unretained(this))); |
| } |
| } |
| |
| } // namespace cc |