1 /* 2 * Copyright (c) 2014 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 // Borrowed from Chromium's src/base/threading/thread_checker_impl.h. 12 13 #ifndef WEBRTC_BASE_THREAD_CHECKER_IMPL_H_ 14 #define WEBRTC_BASE_THREAD_CHECKER_IMPL_H_ 15 16 #include "webrtc/base/criticalsection.h" 17 18 namespace rtc { 19 20 class Thread; 21 22 // Real implementation of ThreadChecker, for use in debug mode, or 23 // for temporary use in release mode (e.g. to CHECK on a threading issue 24 // seen only in the wild). 25 // 26 // Note: You should almost always use the ThreadChecker class to get the 27 // right version for your build configuration. 28 class ThreadCheckerImpl { 29 public: 30 ThreadCheckerImpl(); 31 ~ThreadCheckerImpl(); 32 33 bool CalledOnValidThread() const; 34 35 // Changes the thread that is checked for in CalledOnValidThread. This may 36 // be useful when an object may be created on one thread and then used 37 // exclusively on another thread. 38 void DetachFromThread(); 39 40 private: 41 void EnsureThreadIdAssigned() const; 42 43 mutable CriticalSection lock_; 44 // This is mutable so that CalledOnValidThread can set it. 45 // It's guarded by |lock_|. 46 mutable const Thread* valid_thread_; 47 }; 48 49 } // namespace rtc 50 51 #endif // WEBRTC_BASE_THREAD_CHECKER_IMPL_H_ 52
