dom/media/systemservices/MediaTaskUtils.h
author Emilio Cobos Álvarez <emilio@crisal.io>
Fri, 01 Jun 2018 18:30:30 +0200
changeset 420970 bb85c5ee5afc151be0d07ecc48318dc69cfef446
parent 420757 b54db66223586b4e04f5cb926fccdacf8a176b91
child 447000 0ceae9db9ec0be18daa1a279511ad305723185d4
permissions -rw-r--r--
Bug 1466168: Remove mozilla::Forward in favor of std::forward. r=froydnj Same approach as the other bug, mostly replacing automatically by removing 'using mozilla::Forward;' and then: s/mozilla::Forward/std::forward/ s/Forward</std::forward</ The only file that required manual fixup was TestTreeTraversal.cpp, which had a class called TestNodeForward with template parameters :) MozReview-Commit-ID: A88qFG5AccP

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set sw=2 ts=8 et ft=cpp : */
/* 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_MediaTaskUtils_h
#define mozilla_MediaTaskUtils_h

#include "nsThreadUtils.h"

// The main reason this file is separate from MediaUtils.h
#include "base/task.h"

namespace mozilla {
namespace media {

/* media::NewTaskFrom() - Create a Task from a lambda.
 *
 * Similar to media::NewRunnableFrom() - Create an nsRunnable from a lambda.
 */

template<typename OnRunType>
class LambdaTask : public Runnable
{
public:
  explicit LambdaTask(OnRunType&& aOnRun)
    : Runnable("media::LambdaTask")
    , mOnRun(std::move(aOnRun))
  {
  }

private:
  NS_IMETHOD
  Run() override
  {
    mOnRun();
    return NS_OK;
  }
  OnRunType mOnRun;
};

template<typename OnRunType>
already_AddRefed<LambdaTask<OnRunType>>
NewTaskFrom(OnRunType&& aOnRun)
{
  typedef LambdaTask<OnRunType> LambdaType;
  RefPtr<LambdaType> lambda = new LambdaType(std::forward<OnRunType>(aOnRun));
  return lambda.forget();
}

} // namespace media
} // namespace mozilla

#endif // mozilla_MediaTaskUtils_h