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 "api/sequence_checker.h" 16 #include "rtc_base/checks.h" 17 #include "rtc_base/thread.h" 18 #include "rtc_base/thread_annotations.h" 19 20 namespace webrtc { 21 22 // Implementation of IceTransportInterface that does not take ownership 23 // of its underlying IceTransport. It depends on its creator class to 24 // ensure that Clear() is called before the underlying IceTransport 25 // is deallocated. 26 class IceTransportWithPointer : public IceTransportInterface { 27 public: IceTransportWithPointer(cricket::IceTransportInternal * internal)28 explicit IceTransportWithPointer(cricket::IceTransportInternal* internal) 29 : creator_thread_(rtc::Thread::Current()), internal_(internal) { 30 RTC_DCHECK(internal_); 31 } 32 33 IceTransportWithPointer() = delete; 34 IceTransportWithPointer(const IceTransportWithPointer&) = delete; 35 IceTransportWithPointer& operator=(const IceTransportWithPointer&) = delete; 36 37 cricket::IceTransportInternal* internal() override; 38 // This call will ensure that the pointer passed at construction is 39 // no longer in use by this object. Later calls to internal() will return 40 // null. 41 void Clear(); 42 43 protected: 44 ~IceTransportWithPointer() override; 45 46 private: 47 const rtc::Thread* creator_thread_; 48 cricket::IceTransportInternal* internal_ RTC_GUARDED_BY(creator_thread_); 49 }; 50 51 } // namespace webrtc 52 53 #endif // PC_ICE_TRANSPORT_H_ 54