I want to make sure that when my program exits ungracefully (CTRL-C, seg fault, etc) it releases a Boost.Interprocess named_upgradable_mutex, if it&#39;s holding it. I&#39;ve created a signal handler to catch these ungraceful exits. Is there any way to tell if my process currently holds an exclusive or sharable lock on the mutex?<br>
<br>I&#39;ve tried blindly calling mutex.unlock() and mutex.unlock_sharable() but that seems to permanently lock the mutex when the shareable lock is set.<br><br>RickW<br>