<div dir="ltr">Would something like dynamic-wind work for you? <a href="http://docs.racket-lang.org/reference/cont.html?q=dynamic-wind#%28def._%28%28quote._~23~25kernel%29._dynamic-wind%29%29">http://docs.racket-lang.org/reference/cont.html?q=dynamic-wind#%28def._%28%28quote._~23~25kernel%29._dynamic-wind%29%29</a> </div><div class="gmail_extra"> <div class="gmail_quote">On Sun, May 4, 2014 at 2:29 PM, Tony Garnock-Jones <<a href="mailto:tonyg@ccs.neu.edu" target="_blank">tonyg@ccs.neu.edu</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi all, I'm looking for an atexit()-like facility for Racket. I've tried setting the exit-handler, but it only seems to be called when I explicitly call exit, and not implicitly when Racket shuts down when control flows off the end of the main program. The problem I'm facing is to buffer rows to insert into a database, and every few tens of milliseconds flush the buffer, thereby increasing insertion performance. However, I don't want to have waiting buffered rows lost at the end of the program. I'd like to be able to avoid having to explicitly flush the buffer before exiting the program, so I'd like to make some kind of atexit()-alike do it for me. Any suggestions? Tony ____________________ Racket Users list: <a href="http://lists.racket-lang.org/users" target="_blank">http://lists.racket-lang.org/users</a> </blockquote></div> </div>