[MLton-user] signal handlers

[Wesley W. Terpstra]

On Dec 1, 2007, at 10:09 PM, Dave Herman wrote:
> But how do you actually trap them? I can't find the ML analog of  
> signal(...).

fun h () = print "hello world\n"
val () = MLton.Signal.setHandler (Posix.Signal.cont,
                                   MLton.Signal.Handler.simple h)

I don't believe it's possible to write a signal handler in SML97 (ie:  
you need MLton extensions). This is because signal handling requires  
some concept of asynchronous method invocation or multiple threads,  
both of which are not available in SML97.