></a><span class="lineno">  111</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="l00112"></a><span class="lineno">  112</span>&#160;      }</div><div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;</div><div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;      <span class="comment">// Limit block size. This has the effect