ogramlisting"><a class="link" href="io_service/overload1.html" title="io_service::io_service (1 of 2 overloads)">io_service</a><span class="special">();</span>
  <span class="emphasis"><em>&#187; <a class="link" href="io_service/overload1.html" title="io_service::io_service (1 of 2 overloads)">more...</a></em></span>

<span class="keyword">explicit</span> <a class="link" href="io_service/overload2.html" title="io_service::io_service (2 of 2 overloads)">io_service</a><span class="special">(</span>
    <span 