     <a href="../../../../../../libs/log/example/doc/sinks_unlocked.cpp" target="_top">See the complete
          code</a>.
        </p>
<p>
          All sink backends provided by the library require thread synchronization
          on the frontend part. If we tried to instantiate the frontend on the backend
          that requires more strict threading guarantees than what the frontend provides,
          the code wouldn't have compiled. Therefore this frontend is mostly useful
          in single-threade