an> 
<span class="keyword">class</span> <a class="link" href="basic_event_log_backend.html" title="Class template basic_event_log_backend">basic_event_log_backend</a> <span class="special">:</span>
  <span class="keyword">public</span> <span class="identifier">basic_sink_backend</span><span class="special">&lt;</span> <span class="identifier">synchronized_feeding</span> <span class="special">&gt;</span>
<span class="special">{</span>
<span class="keyword">public</span><span class="special">:</span>
  <span 