/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef mozilla_AutoProfilerStyleMarker_h

#define mozilla_AutoProfilerStyleMarker_h

#include "mozilla/Attributes.h"

#include "mozilla/ServoTraversalStatistics.h"

#include "mozilla/TimeStamp.h"

#include "GeckoProfiler.h"

#include "ProfilerMarkerPayload.h"

namespace mozilla {

class MOZ_RAII AutoProfilerStyleMarker

{

public:

  explicit AutoProfilerStyleMarker(UniqueProfilerBacktrace aCause)

    : mActive(profiler_is_active())

    , mStartTime(TimeStamp::Now())

    , mCause(std::move(aCause))

  {

    if (!mActive) {

      return;

    }

    MOZ_ASSERT(!ServoTraversalStatistics::sActive,

               "Nested AutoProfilerStyleMarker");

    ServoTraversalStatistics::sSingleton = ServoTraversalStatistics();

    ServoTraversalStatistics::sActive = true;

  }

  ~AutoProfilerStyleMarker()

  {

    if (!mActive) {

      return;

    }

    ServoTraversalStatistics::sActive = false;

    profiler_add_marker("Styles", MakeUnique<StyleMarkerPayload>(

      mStartTime, TimeStamp::Now(), std::move(mCause),

      ServoTraversalStatistics::sSingleton));

  }

private:

  bool mActive;

  TimeStamp mStartTime;

  UniqueProfilerBacktrace mCause;

};

} // namespace mozilla

#endif // mozilla_AutoProfilerStyleMarker_h