Index: base/post_task_and_reply_with_result_internal.h |
diff --git a/base/post_task_and_reply_with_result_internal.h b/base/post_task_and_reply_with_result_internal.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..1456129324a55dd80b90124895c110bde5d735d5 |
--- /dev/null |
+++ b/base/post_task_and_reply_with_result_internal.h |
@@ -0,0 +1,35 @@ |
+// 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 <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(const Callback<ReturnType(void)>& func, |
+ ReturnType* result) { |
+ *result = func.Run(); |
+} |
+ |
+// Adapts a T* result to a callblack that expects a T. |
+template <typename TaskReturnType, typename ReplyArgType> |
+void ReplyAdapter(const Callback<void(ReplyArgType)>& callback, |
+ TaskReturnType* result) { |
+ callback.Run(std::move(*result)); |
+} |
+ |
+} // namespace internal |
+ |
+} // namespace base |
+ |
+#endif // BASE_POST_TASK_AND_REPLY_WITH_RESULT_INTERNAL_H_ |