chromium/cc/metrics/compositor_frame_reporter.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_COMPOSITOR_FRAME_REPORTER_H_
#define CC_METRICS_COMPOSITOR_FRAME_REPORTER_H_

#include <bitset>
#include <deque>
#include <memory>
#include <optional>
#include <queue>
#include <string>
#include <utility>
#include <vector>

#include "base/memory/raw_ptr.h"
#include "base/memory/raw_ptr_exclusion.h"
#include "base/time/default_tick_clock.h"
#include "base/time/time.h"
#include "cc/base/devtools_instrumentation.h"
#include "cc/cc_export.h"
#include "cc/metrics/begin_main_frame_metrics.h"
#include "cc/metrics/event_metrics.h"
#include "cc/metrics/frame_info.h"
#include "cc/metrics/frame_sequence_metrics.h"
#include "cc/metrics/predictor_jank_tracker.h"
#include "cc/metrics/scroll_jank_dropped_frame_tracker.h"
#include "cc/scheduler/scheduler.h"
#include "components/viz/common/frame_sinks/begin_frame_args.h"
#include "components/viz/common/frame_timing_details.h"

namespace viz {
struct FrameTimingDetails;
}

namespace cc {
class DroppedFrameCounter;
class EventLatencyTracker;
class FrameSequenceTrackerCollection;
class LatencyUkmReporter;

struct GlobalMetricsTrackers { … };

// This is used for tracing and reporting the duration of pipeline stages within
// a single frame.
//
// For each stage in the frame pipeline, calling StartStage will start tracing
// that stage (and end any currently running stages).
//
// If the tracked frame is presented (i.e. the frame termination status is
// kPresentedFrame), then the duration of each stage along with the total
// latency will be reported to UMA. If the tracked frame is not presented (i.e.
// the frame termination status is kDidNotPresentFrame or
// kReplacedByNewReporter), then the duration is reported under
// CompositorLatency.DroppedFrame.*.
// The format of each stage reported to UMA is
// "CompositorLatency.[DroppedFrame.][Interaction_name.].<StageName>".
class CC_EXPORT CompositorFrameReporter { … };

}  // namespace cc

#endif  // CC_METRICS_COMPOSITOR_FRAME_REPORTER_H_