I've been wondering if you would be willing to add a feature like ISO C's atexit function. Basically, the ability to register functions to be executed when someone calls (exit) from within newLISP or similar. This could be useful for cleaning up global symbols inside a module context or program. I'm thinking stuff that was allocated by an imported function, which is not managed by newLISP.
If this is not a good idea for a builtin, then I could just emulate it with a wrapper to the exit function I suppose. But, I figured it would be better if it was handled by newLISP. Anyway, thanks.
yes, When we import some module, imported symbols list is useful, when it is not useable, delete it from symbols table also is a good habbit.
This may well be too platform dependent, but on Linux (Ubuntu 12.04) one can augment the unix.lsp module with an import of
(import unix:library "on_exit")
(on_exit (callback 0 'on-exit) 0)
(define (on-exit) (println "Cheerio!"))
This, as it should, invokes the
(signal 2 handler) ; QUIT
(signal 15 handler) ; TERM
on Mac OS X and other BSDs use
> (import "libc.dylib" "atexit")
atexit@7FFF833285B1
> (atexit (callback 0 'on-exit))
0
> (define (on-exit) (println "Cheerio!"))
(lambda () (println "Cheerio!"))
> (exit)
Cheerio!
Yes. The Linux man pages also speak highly about using
Quote
Peculiar. But