="lineno">   53</span>&#160;        <span class="keywordflow">throw</span> std::runtime_error(<span class="stringliteral">&quot;Failed to query occupancy.&quot;</span>);</div><div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;      }</div><div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;</div><div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;      <span class="comment">// Limit block size. This has the effect of increasing t