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 11 #ifndef WEBRTC_BASE_KEEP_REF_UNTIL_DONE_H_ 12 #define WEBRTC_BASE_KEEP_REF_UNTIL_DONE_H_ 13 14 #include "webrtc/base/bind.h" 15 #include "webrtc/base/callback.h" 16 #include "webrtc/base/refcount.h" 17 #include "webrtc/base/scoped_ref_ptr.h" 18 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 42 43 #endif // WEBRTC_BASE_KEEP_REF_UNTIL_DONE_H_ 44
