chromium/components/viz/service/frame_sinks/begin_frame_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 COMPONENTS_VIZ_SERVICE_FRAME_SINKS_BEGIN_FRAME_TRACKER_H_
#define COMPONENTS_VIZ_SERVICE_FRAME_SINKS_BEGIN_FRAME_TRACKER_H_

#include "components/viz/common/frame_sinks/begin_frame_args.h"
#include "components/viz/service/viz_service_export.h"

namespace viz {

// Keeps track of OnBeginFrame() messages sent the client and acks received back
// from the client in order to throttle unresponsive clients. This is to prevent
// sending a large number of IPCs to a client that is unresponsive and having
// the message queue balloon in size. Tolerates clients occasionally dropping
// an OnBeginFrame() message and not acking as long as they keep responding to
// the latest BeginFrameArgs.
class VIZ_SERVICE_EXPORT BeginFrameTracker { … };

}  // namespace viz

#endif  // COMPONENTS_VIZ_SERVICE_FRAME_SINKS_BEGIN_FRAME_TRACKER_H_