ThreadScope concept to check variable accessed on correct thread

webrtc/base/thread.h

 /*
  *  Copyright 2004 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 #ifndef WEBRTC_BASE_THREAD_H_
 #define WEBRTC_BASE_THREAD_H_
 
 #include <algorithm>
 #include <list>
 #include <memory>
 #include <string>
 #include <vector>
 
 #if defined(WEBRTC_POSIX)
 #include <pthread.h>
 #endif
+#include "webrtc/base/checks.h"
 #include "webrtc/base/constructormagic.h"
 #include "webrtc/base/event.h"
 #include "webrtc/base/messagequeue.h"
 
 #if defined(WEBRTC_WIN)
 #include "webrtc/base/win32.h"
 #endif
 
 namespace rtc {
 
@@ skipping 53 matching lines @@
 
  protected:
   Runnable() {}
 
  private:
   RTC_DISALLOW_COPY_AND_ASSIGN(Runnable);
 };
 
 // WARNING! SUBCLASSES MUST CALL Stop() IN THEIR DESTRUCTORS!  See ~Thread().
 
-class Thread : public MessageQueue {
+class LOCKABLE Thread : public MessageQueue {
  public:
   // Create a new Thread and optionally assign it to the passed SocketServer.
   Thread();
   explicit Thread(SocketServer* ss);
   explicit Thread(std::unique_ptr<SocketServer> ss);
 
   // NOTE: ALL SUBCLASSES OF Thread MUST CALL Stop() IN THEIR DESTRUCTORS (or
   // guarantee Stop() is explicitly called before the subclass is destroyed).
   // This is required to avoid a data race between the destructor modifying the
   // vtable, and the Thread::PreRun calling the virtual method Run().
@@ skipping 220 matching lines @@
 
  private:
   SocketServer* old_ss_;
 
   RTC_DISALLOW_IMPLICIT_CONSTRUCTORS(SocketServerScope);
 };
 
 }  // namespace rtc
 
 #endif  // WEBRTC_BASE_THREAD_H_