title: Detaching from shared memory before removing it
body: <p>When I have several processes going on using a shared memory, and I detach all of them but one.</p>
  
  <ol>
  <li>Does it make sense to detach the last process before removing the shared memory with <a href="http://pubs.opengroup.org/onlinepubs/9699919799/functions/shmctl.html" rel="nofollow noreferrer"><code>shmctl()</code></a> (with that process)?</li>
  <li>If it doesn't make sense, is it <strong>possible</strong> to remove the shared memory after detaching from it?</li>
  </ol>