utput">bytes</code> is larger than that which the largest pool can handle, then memory will be allocated using <code class="computeroutput">upstream_resource()-&gt;allocate()</code>.</p>
<p><span class="bold"><strong>Throws</strong></span>: Nothing unless <code class="computeroutput">upstream_resource()-&gt;allocate()</code> throws. </p>
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<pre class="literallayout"><span class="keyword">virtual</span> <span class="keyword">void</span> <a name="idp39478928-bb"></a><span class="iden