You can actually use setjmp()/longjmp() to implement that kind of thing, it turns out. Here's but one example: http://www.on-time.com/ddj0011.htm http://www.on

You can actually use setjmp()/longjmp() to implement that kind of thing, it turns out. Here's but one example: http://www.on-time.com/ddj0011.htm http://www.on-time.com/ddj0011.htm I'm almost tempted to make an analogy with scheme's (call-with-current-continuation) here, but I think that might be pushing it.