   41</span>&#160;<span class="keyword">namespace </span>thread {</div><div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;</div><div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;</div><div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;<span class="keyword">template</span> &lt;</div><div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;  <span class="keyword">typename</span> Shape_,</div><div class="line