as far as I’ve seen. And I’ve seen them all…well, I’ve seen one…a small one…a picture—well, I’ve heard about them.</p>
<h2 data-number="6.4" id="summary-2"><span class="header-section-number">6.4</span> Summary</h2>
<p>Locks rule. Sometimes, though, you might need more control over your processes in a producer-consumer situation. For this reason, if no other, you should see the document on System V <a href="semaphores.html#semaphores">semaphores</a> (or POSIX, for that matter; they aren’t 