squo;handler&rsquo; will run in the event
loop thread and not in a thread pool thread.  Exceptions thrown by the
handler procedure will propagate out of event-loop-run! for the &rsquo;loop&rsquo;
event loop.
</p>
<p>This procedure calls &rsquo;await&rsquo; and must (like the a-sync procedure) be
called in the same thread as that in which the &rsquo;loop&rsquo; or default event
loop runs (as the case may be).
</p>
<p>This procedure calls event-post! in the &rsquo;loop&rsquo; or default event loop,
which coul