chromium/third_party/blink/renderer/platform/scheduler/public/widget_scheduler.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 THIRD_PARTY_BLINK_RENDERER_PLATFORM_SCHEDULER_PUBLIC_WIDGET_SCHEDULER_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_SCHEDULER_PUBLIC_WIDGET_SCHEDULER_H_

#include "base/task/single_thread_task_runner.h"
#include "third_party/blink/public/common/input/web_input_event.h"
#include "third_party/blink/public/platform/web_input_event_result.h"
#include "third_party/blink/renderer/platform/platform_export.h"
#include "third_party/blink/renderer/platform/wtf/thread_safe_ref_counted.h"

namespace viz {
struct BeginFrameArgs;
}  // namespace viz

namespace blink {

class WebInputEventAttribution;

namespace scheduler {

// A new WidgetScheduler should be allocated for each Widget created. This
// class is ThreadSafeRefCounted because some of its methods can be invoked
// from the compositor thread. Each method is marked in what context it
// will be called. Destruction of the class can happen on any thread
// and thread specific shutdown code should be performed in the `Shutdown`
// method. The `Shutdown` method should be invoked on the main thread before
// the reference is released on that thread.
class PLATFORM_EXPORT WidgetScheduler
    : public ThreadSafeRefCounted<WidgetScheduler> { … };

}  // namespace scheduler
}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_PLATFORM_SCHEDULER_PUBLIC_WIDGET_SCHEDULER_H_