File: VRThread.h

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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 GFX_VR_THREAD_H
#define GFX_VR_THREAD_H

#include "ThreadSafeRefcountingWithMainThreadDestruction.h"
#include "base/thread.h"  // for Thread

namespace mozilla {
namespace gfx {

class VRListenerThreadHolder final {
  NS_INLINE_DECL_THREADSAFE_REFCOUNTING_WITH_MAIN_THREAD_DESTRUCTION(
      VRListenerThreadHolder)

 public:
  VRListenerThreadHolder();

  base::Thread* GetThread() const { return mThread; }

  static VRListenerThreadHolder* GetSingleton();

  static bool IsActive() { return GetSingleton() && Loop(); }

  static void Start();
  static void Shutdown();
  static MessageLoop* Loop();
  static bool IsInVRListenerThread();

 private:
  ~VRListenerThreadHolder();

  base::Thread* const mThread;

  static base::Thread* CreateThread();
  static void DestroyThread(base::Thread* aThread);
};

base::Thread* VRListenerThread();

class VRThread final {
  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(VRThread)

 public:
  explicit VRThread(const nsCString& aName);

  void Start();
  void Shutdown();
  void SetLifeTime(uint32_t aLifeTime);
  uint32_t GetLifeTime();
  void CheckLife(TimeStamp aCheckTimestamp);
  void PostTask(already_AddRefed<Runnable> aTask);
  void PostDelayedTask(already_AddRefed<Runnable> aTask, uint32_t aTime);
  const nsCOMPtr<nsIThread> GetThread() const;
  bool IsActive();

 protected:
  ~VRThread();

 private:
  nsCOMPtr<nsIThread> mThread;
  TimeStamp mLastActiveTime;
  nsCString mName;
  uint32_t mLifeTime;
  Atomic<bool> mStarted;
};

}  // namespace gfx
}  // namespace mozilla

#endif  // GFX_VR_THREAD_H