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Re: cross platform alternative for signal.SIGALRM?

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From Marko Rauhamaa <marko@pacujo.net>
Newsgroups comp.lang.python
Subject Re: cross platform alternative for signal.SIGALRM?
Date Thu, 12 Nov 2015 10:15:48 +0200
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Ulli Horlacher <framstag@rus.uni-stuttgart.de>:

> Marko Rauhamaa <marko@pacujo.net> wrote:
>
>> I'm thinking the only portable way is to run a watchdog process with
>> subprocess or multiprocessing.
>
> How can a subprocess interrupt a function in another process?
>
> For example: waiting for user input with a timeout.
>
> raw_input("Hit ENTER to continue or wait 10 s")

By sending the parent a signal with os.kill().

Now, signal handling in Python is brittle so you must be careful:

  There is no way to “block” signals temporarily from critical sections
  <URL: https://docs.python.org/2/library/signal.html>


Marko

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cross platform alternative for signal.SIGALRM? Ulli Horlacher <framstag@rus.uni-stuttgart.de> - 2015-11-11 16:16 +0000
  Re: cross platform alternative for signal.SIGALRM? Marko Rauhamaa <marko@pacujo.net> - 2015-11-11 18:30 +0200
    Re: cross platform alternative for signal.SIGALRM? Ulli Horlacher <framstag@rus.uni-stuttgart.de> - 2015-11-11 17:06 +0000
      Re: cross platform alternative for signal.SIGALRM? Marko Rauhamaa <marko@pacujo.net> - 2015-11-11 20:03 +0200
        Re: cross platform alternative for signal.SIGALRM? Ulli Horlacher <framstag@rus.uni-stuttgart.de> - 2015-11-11 22:42 +0000
      Re: cross platform alternative for signal.SIGALRM? Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2015-11-11 19:42 -0500
  Re: cross platform alternative for signal.SIGALRM? Terry Reedy <tjreedy@udel.edu> - 2015-11-11 20:37 -0500
    Re: cross platform alternative for signal.SIGALRM? Marko Rauhamaa <marko@pacujo.net> - 2015-11-12 08:14 +0200
      Re: cross platform alternative for signal.SIGALRM? Christian Gollwitzer <auriocus@gmx.de> - 2015-11-12 07:43 +0100
        Re: cross platform alternative for signal.SIGALRM? Chris Angelico <rosuav@gmail.com> - 2015-11-12 18:37 +1100
        Re: cross platform alternative for signal.SIGALRM? Terry Reedy <tjreedy@udel.edu> - 2015-11-12 05:15 -0500
        Re: cross platform alternative for signal.SIGALRM? Chris Angelico <rosuav@gmail.com> - 2015-11-12 22:38 +1100
        Re: cross platform alternative for signal.SIGALRM? Terry Reedy <tjreedy@udel.edu> - 2015-11-12 09:01 -0500
      Re: cross platform alternative for signal.SIGALRM? Ulli Horlacher <framstag@rus.uni-stuttgart.de> - 2015-11-12 07:22 +0000
        Re: cross platform alternative for signal.SIGALRM? Marko Rauhamaa <marko@pacujo.net> - 2015-11-12 10:15 +0200
    Re: cross platform alternative for signal.SIGALRM? Ulli Horlacher <framstag@rus.uni-stuttgart.de> - 2015-11-12 06:58 +0000
  Re: cross platform alternative for signal.SIGALRM? Cameron Simpson <cs@zip.com.au> - 2015-11-12 16:20 +1100

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