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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_COMPOSITOR_COMPOSITOR_METRICS_TRACKER_HOST_H_
#define UI_COMPOSITOR_COMPOSITOR_METRICS_TRACKER_HOST_H_
#include "base/functional/callback_forward.h"
#include "cc/metrics/frame_sequence_tracker.h"
#include "ui/compositor/compositor_export.h"
namespace ui {
// An interface for CompositorMetricsTracker to call its host.
class COMPOSITOR_EXPORT CompositorMetricsTrackerHost {
public:
using TrackerId = size_t;
virtual ~CompositorMetricsTrackerHost() = default;
// Starts the tracking for the given `tracker_id`. `callback` is invoked after
// the tracker is stopped and the metrics data is collected.
using ReportCallback = base::OnceCallback<void(
const cc::FrameSequenceMetrics::CustomReportData& data)>;
virtual void StartMetricsTracker(TrackerId tracker_id,
ReportCallback callback) = 0;
// Stops the tracking for the given `tracker_id`. Returns true if tracking
// is stopped successfully. Otherwise, returns false.
virtual bool StopMetricsTracker(TrackerId tracker_id) = 0;
// Cancels the tracking for the given tracker id.
virtual void CancelMetricsTracker(TrackerId tracker_id) = 0;
};
} // namespace ui
#endif // UI_COMPOSITOR_COMPOSITOR_METRICS_TRACKER_HOST_H_
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