chromium/cc/metrics/frame_sequence_tracker.h

// 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_FRAME_SEQUENCE_TRACKER_H_
#define CC_METRICS_FRAME_SEQUENCE_TRACKER_H_

#include <deque>
#include <memory>
#include <sstream>

#include "base/containers/circular_deque.h"
#include "base/containers/flat_set.h"
#include "base/time/time.h"
#include "cc/cc_export.h"
#include "cc/metrics/frame_sequence_metrics.h"

namespace gfx {
struct PresentationFeedback;
}

namespace viz {
struct BeginFrameArgs;
struct BeginFrameId;
}  // namespace viz

namespace cc {
// Tracks a sequence of frames to determine the throughput. It tracks this by
// tracking the vsync sequence-numbers (from |BeginFrameArgs::sequence_number|),
// and the presentation-timestamps (from |gfx::PresentationFeedback|).
// This object should be created through
// FrameSequenceTrackerCollection::CreateTracker() API.
class CC_EXPORT FrameSequenceTracker { … };

}  // namespace cc

#endif  // CC_METRICS_FRAME_SEQUENCE_TRACKER_H_