| // Copyright 2016 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef BASE_APPLE_SCOPED_DISPATCH_OBJECT_H_ |
| #define BASE_APPLE_SCOPED_DISPATCH_OBJECT_H_ |
| |
| #include <dispatch/dispatch.h> |
| |
| #include "base/apple/scoped_typeref.h" |
| |
| #if __OBJC__ |
| // In Objective-C ARC, dispatch types are Objective-C types, and must be managed |
| // as such with __strong, etc. This header file must not be included in |
| // Objective-C code, nor may it be allowed to be recursively included. Use the |
| // pimpl pattern to isolate its use in a pure C++ file if needed. |
| #error Do not use this file, or allow it to be included, in Objective-C code. |
| #endif |
| |
| namespace base::apple { |
| |
| namespace internal { |
| |
| template <typename T> |
| struct ScopedDispatchObjectTraits { |
| static constexpr T InvalidValue() { return nullptr; } |
| static T Retain(T object) { |
| dispatch_retain(object); |
| return object; |
| } |
| static void Release(T object) { dispatch_release(object); } |
| }; |
| |
| } // namespace internal |
| |
| template <typename T> |
| using ScopedDispatchObject = |
| ScopedTypeRef<T, internal::ScopedDispatchObjectTraits<T>>; |
| |
| } // namespace base::apple |
| |
| #endif // BASE_APPLE_SCOPED_DISPATCH_OBJECT_H_ |