="comment">// types</span>
  <span class="keyword">typedef</span> <span class="identifier">base_type</span><span class="special">::</span><span class="identifier">threading_model</span> <a name="boost.log.sources.basic_composite_logger.threading_model"></a><span class="identifier">threading_model</span><span class="special">;</span>  <span class="comment">// Threading model being used. </span>

  <span class="comment">// <a class="link" href="basic_composite_logger.html#boost.log.sources.basic_composite_log