1 /* 2 * Copyright 2019 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 PC_ICE_TRANSPORT_H_ 12 #define PC_ICE_TRANSPORT_H_ 13 14 #include "api/ice_transport_interface.h" 15 #include "rtc_base/checks.h" 16 #include "rtc_base/thread.h" 17 #include "rtc_base/thread_annotations.h" 18 19 namespace webrtc { 20 21 // Implementation of IceTransportInterface that does not take ownership 22 // of its underlying IceTransport. It depends on its creator class to 23 // ensure that Clear() is called before the underlying IceTransport 24 // is deallocated. 25 class IceTransportWithPointer : public IceTransportInterface { 26 public: IceTransportWithPointer(cricket::IceTransportInternal * internal)27 explicit IceTransportWithPointer(cricket::IceTransportInternal* internal) 28 : creator_thread_(rtc::Thread::Current()), internal_(internal) { 29 RTC_DCHECK(internal_); 30 } 31 32 IceTransportWithPointer() = delete; 33 IceTransportWithPointer(const IceTransportWithPointer&) = delete; 34 IceTransportWithPointer& operator=(const IceTransportWithPointer&) = delete; 35 36 cricket::IceTransportInternal* internal() override; 37 // This call will ensure that the pointer passed at construction is 38 // no longer in use by this object. Later calls to internal() will return 39 // null. 40 void Clear(); 41 42 protected: 43 ~IceTransportWithPointer() override; 44 45 private: 46 const rtc::Thread* creator_thread_; 47 cricket::IceTransportInternal* internal_ RTC_GUARDED_BY(creator_thread_); 48 }; 49 50 } // namespace webrtc 51 52 #endif // PC_ICE_TRANSPORT_H_ 53