chromium/services/tracing/public/cpp/perfetto/custom_event_recorder.h

// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef SERVICES_TRACING_PUBLIC_CPP_PERFETTO_CUSTOM_EVENT_RECORDER_H_
#define SERVICES_TRACING_PUBLIC_CPP_PERFETTO_CUSTOM_EVENT_RECORDER_H_

#include "base/component_export.h"
#include "base/metrics/histogram_samples.h"
#include "base/metrics/statistics_recorder.h"
#include "base/metrics/user_metrics.h"
#include "base/sequence_checker.h"
#include "base/trace_event/trace_config.h"
#include "base/trace_event/typed_macros.h"
#include "third_party/perfetto/include/perfetto/tracing/internal/track_event_internal.h"

namespace tracing {

// A class that accompanies TraceEventDataSource to record some additional
// events like UMA histogram samples or user action samples.
class COMPONENT_EXPORT(TRACING_CPP) CustomEventRecorder
    : public perfetto::TrackEventSessionObserver { … };

}  // namespace tracing

#endif  // SERVICES_TRACING_PUBLIC_CPP_PERFETTO_CUSTOM_EVENT_RECORDER_H_