* because it would block the whole simulation.
* Instead, you should use the present class, that is a drop-in replacement of
* [std::mutex](http://en.cppreference.com/w/cpp/thread/mutex).
* because it would block the whole simulation.
* Instead, you should use the present class, that is a drop-in replacement of
* [std::mutex](http://en.cppreference.com/w/cpp/thread/mutex).