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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CC_METRICS_LATENCY_UKM_REPORTER_H_
#define CC_METRICS_LATENCY_UKM_REPORTER_H_
#include <memory>
#include <vector>
#include "base/memory/raw_ptr.h"
#include "cc/cc_export.h"
#include "cc/metrics/compositor_frame_reporter.h"
#include "cc/metrics/event_metrics.h"
namespace cc {
class UkmManager;
// A helper class that takes latency data from a CompositorFrameReporter and
// talks to UkmManager to report it.
class CC_EXPORT LatencyUkmReporter {
public:
LatencyUkmReporter();
~LatencyUkmReporter();
LatencyUkmReporter(const LatencyUkmReporter&) = delete;
LatencyUkmReporter& operator=(const LatencyUkmReporter&) = delete;
void ReportCompositorLatencyUkm(
const CompositorFrameReporter::FrameReportTypes& report_types,
const std::vector<CompositorFrameReporter::StageData>& stage_history,
const ActiveTrackers& active_trackers,
const CompositorFrameReporter::ProcessedBlinkBreakdown&
processed_blink_breakdown,
const CompositorFrameReporter::ProcessedVizBreakdown&
processed_viz_breakdown);
void ReportEventLatencyUkm(
const EventMetrics::List& events_metrics,
const std::vector<CompositorFrameReporter::StageData>& stage_history,
const CompositorFrameReporter::ProcessedBlinkBreakdown&
processed_blink_breakdown,
const CompositorFrameReporter::ProcessedVizBreakdown&
processed_viz_breakdown);
void set_ukm_manager(UkmManager* manager) { ukm_manager_ = manager; }
private:
class SamplingController;
// This is pointing to the LayerTreeHostImpl::ukm_manager_, which is
// initialized right after the LayerTreeHostImpl is created. So when this
// pointer is initialized, there should be no trackers yet. Moreover, the
// LayerTreeHostImpl::ukm_manager_ lives as long as the LayerTreeHostImpl, so
// this pointer should never be null as long as LayerTreeHostImpl is alive.
raw_ptr<UkmManager, DanglingUntriaged> ukm_manager_ = nullptr;
std::unique_ptr<SamplingController> compositor_latency_sampling_controller_;
std::unique_ptr<SamplingController> event_latency_sampling_controller_;
};
} // namespace cc
#endif // CC_METRICS_LATENCY_UKM_REPORTER_H_