perkj | 14f4144 | 2015-11-30 22:15:45 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2015 The WebRTC Project Authors. All rights reserved. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license |
| 5 | * that can be found in the LICENSE file in the root of the source |
| 6 | * tree. An additional intellectual property rights grant can be found |
| 7 | * in the file PATENTS. All contributing project authors may |
| 8 | * be found in the AUTHORS file in the root of the source tree. |
| 9 | */ |
| 10 | |
Mirko Bonadei | 92ea95e | 2017-09-15 06:47:31 +0200 | [diff] [blame] | 11 | #ifndef RTC_BASE_KEEP_REF_UNTIL_DONE_H_ |
| 12 | #define RTC_BASE_KEEP_REF_UNTIL_DONE_H_ |
perkj | 14f4144 | 2015-11-30 22:15:45 -0800 | [diff] [blame] | 13 | |
Mirko Bonadei | 92ea95e | 2017-09-15 06:47:31 +0200 | [diff] [blame] | 14 | #include "rtc_base/bind.h" |
| 15 | #include "rtc_base/callback.h" |
| 16 | #include "rtc_base/refcount.h" |
| 17 | #include "rtc_base/scoped_ref_ptr.h" |
perkj | 14f4144 | 2015-11-30 22:15:45 -0800 | [diff] [blame] | 18 | |
Henrik Kjellander | ec78f1c | 2017-06-29 07:52:50 +0200 | [diff] [blame] | 19 | namespace rtc { |
| 20 | |
| 21 | namespace impl { |
| 22 | template <class T> |
| 23 | static inline void DoNothing(const scoped_refptr<T>& object) {} |
| 24 | } // namespace impl |
| 25 | |
| 26 | // KeepRefUntilDone keeps a reference to |object| until the returned |
| 27 | // callback goes out of scope. If the returned callback is copied, the |
| 28 | // reference will be released when the last callback goes out of scope. |
| 29 | template <class ObjectT> |
| 30 | static inline Callback0<void> KeepRefUntilDone(ObjectT* object) { |
| 31 | return rtc::Bind(&impl::DoNothing<ObjectT>, scoped_refptr<ObjectT>(object)); |
| 32 | } |
| 33 | |
| 34 | template <class ObjectT> |
| 35 | static inline Callback0<void> KeepRefUntilDone( |
| 36 | const scoped_refptr<ObjectT>& object) { |
| 37 | return rtc::Bind(&impl::DoNothing<ObjectT>, object); |
| 38 | } |
| 39 | |
| 40 | } // namespace rtc |
| 41 | |
perkj | 14f4144 | 2015-11-30 22:15:45 -0800 | [diff] [blame] | 42 | |
Mirko Bonadei | 92ea95e | 2017-09-15 06:47:31 +0200 | [diff] [blame] | 43 | #endif // RTC_BASE_KEEP_REF_UNTIL_DONE_H_ |