increment the reference object</span></a>
<a class="sourceLine" id="cb2-32" title="32">    <span class="cf">for</span> (<span class="dt">int64_t</span> i=<span class="dv">0</span>; i&lt;cnt; ++i)</a>
<a class="sourceLine" id="cb2-33" title="33">        rsu.next();</a>
<a class="sourceLine" id="cb2-34" title="34">    </a>
<a class="sourceLine" id="cb2-35" title="35">    <span class="co">// wait for the threads to finish their work and exit</span></a>
<a class="sourceLine" id="cb2-36" title="36">    <span cla