VsyncMainChild.h - mozsearch

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/* -*- 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_dom_ipc_VsyncMainChild_h

#define mozilla_dom_ipc_VsyncMainChild_h

#include "mozilla/dom/VsyncChild.h"

#include "nsTObserverArray.h"

namespace mozilla {

class VsyncObserver;

namespace dom {

// The PVsyncChild actor receives a vsync event from the main process and

// delivers it to the child process. Currently this is restricted to the main

// thread only. The actor will stay alive until the process dies or its

// PVsyncParent actor dies.

class VsyncMainChild final : public VsyncChild {

  NS_INLINE_DECL_REFCOUNTING(VsyncMainChild, override)

  friend class PVsyncChild;

 public:

  VsyncMainChild();

  void AddChildRefreshTimer(VsyncObserver* aVsyncObserver);

  void RemoveChildRefreshTimer(VsyncObserver* aVsyncObserver);

  TimeDuration GetVsyncRate();

 private:

  ~VsyncMainChild() override;

  mozilla::ipc::IPCResult RecvNotify(const VsyncEvent& aVsync,

                                     const float& aVsyncRate) override;

  void ActorDestroy(ActorDestroyReason aActorDestroyReason) override;

  bool mIsShutdown;

  TimeDuration mVsyncRate;

  nsTObserverArray<VsyncObserver*> mObservers;

};

}  // namespace dom

}  // namespace mozilla

#endif  // mozilla_dom_ipc_VsyncChild_h