| // Copyright 2016 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef BASE_POST_TASK_AND_REPLY_WITH_RESULT_INTERNAL_H_ |
| #define BASE_POST_TASK_AND_REPLY_WITH_RESULT_INTERNAL_H_ |
| |
| #include <memory> |
| #include <utility> |
| |
| #include "base/callback.h" |
| |
| namespace base { |
| |
| namespace internal { |
| |
| // Adapts a function that produces a result via a return value to |
| // one that returns via an output parameter. |
| template <typename ReturnType> |
| void ReturnAsParamAdapter(OnceCallback<ReturnType()> func, |
| std::unique_ptr<ReturnType>* result) { |
| result->reset(new ReturnType(std::move(func).Run())); |
| } |
| |
| // Adapts a T* result to a callblack that expects a T. |
| template <typename TaskReturnType, typename ReplyArgType> |
| void ReplyAdapter(OnceCallback<void(ReplyArgType)> callback, |
| std::unique_ptr<TaskReturnType>* result) { |
| DCHECK(result->get()); |
| std::move(callback).Run(std::move(**result)); |
| } |
| |
| } // namespace internal |
| |
| } // namespace base |
| |
| #endif // BASE_POST_TASK_AND_REPLY_WITH_RESULT_INTERNAL_H_ |