s constructor calls upstream-&gt;allocate(). </p>
</li>
<li class="listitem">
<pre class="literallayout"><a name="idp39454784-bb"></a><span class="identifier">synchronized_pool_resource</span><span class="special">(</span><span class="special">)</span> <span class="keyword">noexcept</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Same as <code class="computeroutput"><code class="computeroutput"><a class="link" href="unsynchronized_idp39491840.html" title="Cl