52 lines
1.5 KiB
C++
52 lines
1.5 KiB
C++
/* -*- 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,
|
|
* but ignore the return value from the lambda.
|
|
*
|
|
* Prefer NS_NewRunnableFunction(), which provides a specific name, unless the
|
|
* lambda really must have a non-void return value that is to be ignored.
|
|
*/
|
|
|
|
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
|