Re: [racket-users] How to break a process created with system
Does `(current-subprocess-custodian-mode 'kill)` combined with Cmd-k (for kill, instead of break) make the subprocess terminate? If so, you could use `dynamic-wind` or catch `exn:break` exceptions, possibly put the subprocess under its own custodian, and so on. At Sun, 9 Aug 2015 15:17:19 +0200, Jens Axel Søgaard wrote: Hi All, The function node below takes the path of a JavaScript file, starts node (JavaScript evaluator) using system. The output is collected in a string. (define (node path) (with-output-to-string (λ () (system (string-append /usr/local/bin/node(path-string path)) The function is used from within DrRacket. If the JavaScript program doesn't terminate, I use cmd-b to break the process. Control is given back to the repl, but the node system process keeps running in the background - and needs to be killed manually. How can I kill the node system process from within DrRacket? One of my attempts that didn't work: (define (node path) (with-output-to-string (λ () (parameterize ([current-subprocess-custodian-mode 'kill] [subprocess-group-enabled #t]) (system (string-append /usr/local/bin/node (path-string path))) -- Jens Axel Søgaard -- You received this message because you are subscribed to the Google Groups Racket Users group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups Racket Users group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[racket-users] How to break a process created with system
Hi All, The function node below takes the path of a JavaScript file, starts node (JavaScript evaluator) using system. The output is collected in a string. (define (node path) (with-output-to-string (λ () (system (string-append /usr/local/bin/node(path-string path)) The function is used from within DrRacket. If the JavaScript program doesn't terminate, I use cmd-b to break the process. Control is given back to the repl, but the node system process keeps running in the background - and needs to be killed manually. How can I kill the node system process from within DrRacket? One of my attempts that didn't work: (define (node path) (with-output-to-string (λ () (parameterize ([current-subprocess-custodian-mode 'kill] [subprocess-group-enabled #t]) (system (string-append /usr/local/bin/node (path-string path))) -- Jens Axel Søgaard -- You received this message because you are subscribed to the Google Groups Racket Users group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [racket-users] How to break a process created with system
2015-08-09 15:24 GMT+02:00 Matthew Flatt mfl...@cs.utah.edu: Does `(current-subprocess-custodian-mode 'kill)` combined with Cmd-k (for kill, instead of break) make the subprocess terminate? Yes. If so, you could use `dynamic-wind` or catch `exn:break` exceptions, possibly put the subprocess under its own custodian, and so on. Thanks that worked. For the archives: (define (node/break path) (define me(current-thread)) (define cust (make-custodian)) (define (kill)(custodian-shutdown-all cust)) (define (on-break _) (kill) \break: node process was killed\) (parameterize ([current-subprocess-custodian-mode 'kill] [subprocess-group-enabled #t] [current-custodian cust]) (with-handlers ([exn:break? on-break]) (thread (λ() (thread-send me (node path (thread-receive /Jens Axel At Sun, 9 Aug 2015 15:17:19 +0200, Jens Axel Søgaard wrote: Hi All, The function node below takes the path of a JavaScript file, starts node (JavaScript evaluator) using system. The output is collected in a string. (define (node path) (with-output-to-string (λ () (system (string-append /usr/local/bin/node (path-string path)) The function is used from within DrRacket. If the JavaScript program doesn't terminate, I use cmd-b to break the process. Control is given back to the repl, but the node system process keeps running in the background - and needs to be killed manually. How can I kill the node system process from within DrRacket? One of my attempts that didn't work: (define (node path) (with-output-to-string (λ () (parameterize ([current-subprocess-custodian-mode 'kill] [subprocess-group-enabled #t]) (system (string-append /usr/local/bin/node (path-string path))) -- Jens Axel Søgaard -- You received this message because you are subscribed to the Google Groups Racket Users group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups Racket Users group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- -- Jens Axel Søgaard -- You received this message because you are subscribed to the Google Groups Racket Users group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
