wing functions are provided to create
   and delete alarms.<br>
</div>


<pre><span id="VALcreate_alarm"><span class="keyword">val</span> create_alarm</span> : <code class="type">(unit -> unit) -> <a href="Gc.html#TYPEalarm">alarm</a></code></pre><div class="info ">
<code class="code">create_alarm f</code> will arrange for <code class="code">f</code> to be called at the end of each
   major GC cycle, starting with the current cycle or the next one.
   A value of type <code class="code">alarm</code> is retur