DelayedRunnable.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 XPCOM_THREADS_DELAYEDRUNNABLE_H_

#define XPCOM_THREADS_DELAYEDRUNNABLE_H_

#include "mozilla/TimeStamp.h"

#include "nsCOMPtr.h"

#include "nsIRunnable.h"

#include "nsITargetShutdownTask.h"

#include "nsITimer.h"

#include "nsThreadUtils.h"

namespace mozilla {

class DelayedRunnable : public Runnable,

                        public nsITimerCallback,

                        public nsITargetShutdownTask {

 public:

  DelayedRunnable(already_AddRefed<nsISerialEventTarget> aTarget,

                  already_AddRefed<nsIRunnable> aRunnable, uint32_t aDelay);

  NS_DECL_ISUPPORTS_INHERITED

  NS_DECL_NSIRUNNABLE

  NS_DECL_NSITIMERCALLBACK

  nsresult Init();

/**

   * Called when the target is going away so the runnable can be released safely

   * on the target thread.

*/

  void TargetShutdown() override;

 private:

  ~DelayedRunnable() = default;

  nsresult DoRun();

  const nsCOMPtr<nsISerialEventTarget> mTarget;

  const TimeStamp mDelayedFrom;

  const uint32_t mDelay;

  mozilla::Mutex mMutex{"DelayedRunnable"};

  nsCOMPtr<nsIRunnable> mWrappedRunnable;

  nsCOMPtr<nsITimer> mTimer;

};

}  // namespace mozilla

#endif