e_id()</a>, <a href="#type-span_id">span_id()</a>}</tt><br></p>
</div><p>Return the trace id and span id of the span in the process
  dictionary in a tuple. If there is no active span, return tuple {0, 0}</p>

<h3 class="function"><a name="log-1">log/1</a></h3>
<div class="spec">
<p><tt>log(Text::<a href="#type-info">info()</a>) -&gt; <a href="#type-span">span()</a></tt><br></p>
</div><p>Add a log to the span in the process dictionary. If the span is
  not active, a "fake" span is returned with the default 