unofficial mirror of bug-guile@gnu.org 
 help / color / mirror / Atom feed
* bug#46403: SIGINT ignored when using system*
@ 2021-02-09 13:56 Ricardo Wurmus
  0 siblings, 0 replies; only message in thread
From: Ricardo Wurmus @ 2021-02-09 13:56 UTC (permalink / raw)
  To: 46403

I execute commands in a loop and wish to be able to interrupt the loop
with SIGINT.  Here’s the first attempt:

    guile -c \
      '(for-each (lambda (n)
                  (display n)
                  (system* "sleep" "3"))
                 (list 1 2 3 4))'

At no point will this program be interrupted by SIGINT.  Strace reveals
that SIGINT is in fact received and the sleep is interrupted, but the
wait is restarted immediately afterward.

This program on the other hand *can* be interrupted at any point:

    guile -c \
      '(for-each (lambda (n)
                  (if (zero? (primitive-fork))
                   (begin (display n)
                          (execlp "sleep" "sleep" "3"))
                   (waitpid WAIT_ANY)))
                 (list 1 2 3 4))'

Is this by design?

-- 
Ricardo





^ permalink raw reply	[flat|nested] only message in thread

only message in thread, other threads:[~2021-02-09 13:56 UTC | newest]

Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-02-09 13:56 bug#46403: SIGINT ignored when using system* Ricardo Wurmus

unofficial mirror of bug-guile@gnu.org 

This inbox may be cloned and mirrored by anyone:

	git clone --mirror https://yhetil.org/guile-bugs/0 guile-bugs/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 guile-bugs guile-bugs/ https://yhetil.org/guile-bugs \
		bug-guile@gnu.org
	public-inbox-index guile-bugs

Example config snippet for mirrors.
Newsgroups are available over NNTP:
	nntp://news.yhetil.org/yhetil.lisp.guile.bugs
	nntp://news.gmane.io/gmane.lisp.guile.bugs


AGPL code for this site: git clone http://ou63pmih66umazou.onion/public-inbox.git