1 // Copyright 2016 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #ifndef BASE_POST_TASK_AND_REPLY_WITH_RESULT_INTERNAL_H_
6 #define BASE_POST_TASK_AND_REPLY_WITH_RESULT_INTERNAL_H_
11 #include "base/callback.h"
17 // Adapts a function that produces a result via a return value to
18 // one that returns via an output parameter.
19 template <typename ReturnType>
20 void ReturnAsParamAdapter(OnceCallback<ReturnType()> func,
21 std::unique_ptr<ReturnType>* result) {
22 result->reset(new ReturnType(std::move(func).Run()));
25 // Adapts a T* result to a callblack that expects a T.
26 template <typename TaskReturnType, typename ReplyArgType>
27 void ReplyAdapter(OnceCallback<void(ReplyArgType)> callback,
28 std::unique_ptr<TaskReturnType>* result) {
29 DCHECK(result->get());
30 std::move(callback).Run(std::move(**result));
33 } // namespace internal
37 #endif // BASE_POST_TASK_AND_REPLY_WITH_RESULT_INTERNAL_H_