t</code> process pool accepts tasks of type <code>'work</code> and produces an array of results of type <code>'final</code>. <code>'work</code> and <code>'final</code> will be marshalled over a Unix pipe.</p></dd></dl><dl><dt class="spec value" id="val-create"><a href="#val-create" class="anchor"></a><code><span class="keyword">val</span> create : <span>jobs:int</span> <span>&#45;&gt;</span> <span>child_prologue:<span>(unit <span>&#45;&gt;</span> unit)</span></span> <span>&#45;&gt;</span> <span>f:<span>(<sp