Groups > comp.lang.java.programmer > #12957

Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF?

Date	2012-03-13 11:36 -0400
From	Arne Vajhøj <arne@vajhoej.dk>
Newsgroups	comp.lang.java.programmer
Subject	Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF?
References	(12 earlier) <jjm2fh$dsa$1@news.albasani.net> <4f5e8eb7$0$293$14726298@news.sunsite.dk> <jjm317$evr$2@news.albasani.net> <4f5e9a7c$0$288$14726298@news.sunsite.dk> <jjngog$jff$1@news.albasani.net>
Message-ID	<4f5f6989$0$295$14726298@news.sunsite.dk> (permalink)
Organization	SunSITE.dk - Supporting Open source

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On 3/13/2012 9:06 AM, Jan Burse wrote:
> Arne Vajhøj schrieb:
>> If what you want is not in the docs, then it
>> is not broken as you claim.
>
> Its simply broken because of the following
> chain of reasoning.
>
> - InputStream/OutputStream are supposed
> to be blocking IO in contrast to NIO.
>
> - When a shutdown sequence is initiated
> no InputStream/OutputStream is killed
> they remain blocking in case they were
> already blocking.
>
> so that the shutdown hooks can gracefully
> terminate their service. For example
> a goodbye sequence with a web server, etc..
>
> - SIGINT when available, by default
> initiates a shutdown sequence.
>
> - The Windows behaviour for CONIN$ violates
> the above, since during SIGINT the
> CONIN$ becomes non-blocking in that
> it returns EOF.
>
> So this is what is broken here. It contaminates
> any sensible use of shutdown hooks as described
> here in the case of Windows:
> http://docs.oracle.com/javase/1.4.2/docs/api/java/lang/Runtime.html#addShutdownHook%28java.lang.Thread%29

Well that doc does not state anything about streams remain blocked.

It is just something you have invented.

You may still consider that "sensible use", but  the fact
remains that:
* nothing in Java is broken
* your code is broken
because the behavior is not specified.

You can not design your programs after how you think
the platform should behave - you have to code after
how it actually behave.

And that includes staying away from something that
is not well defined.

Arne

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Thread

[Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Jan Burse <janburse@fastmail.fm> - 2012-03-11 21:57 +0100
  Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Jan Burse <janburse@fastmail.fm> - 2012-03-11 22:10 +0100
  Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Arne Vajhøj <arne@vajhoej.dk> - 2012-03-11 17:28 -0400
    Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Jan Burse <janburse@fastmail.fm> - 2012-03-11 22:49 +0100
      Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Arne Vajhøj <arne@vajhoej.dk> - 2012-03-11 18:13 -0400
        Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Jan Burse <janburse@fastmail.fm> - 2012-03-11 23:23 +0100
          Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Arne Vajhøj <arne@vajhoej.dk> - 2012-03-11 18:35 -0400
          Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? markspace <-@.> - 2012-03-11 15:51 -0700
            Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Jan Burse <janburse@fastmail.fm> - 2012-03-12 10:58 +0100
              Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Lew <noone@lewscanon.com> - 2012-03-12 07:38 -0700
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Jan Burse <janburse@fastmail.fm> - 2012-03-12 20:43 +0100
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Arne Vajhøj <arne@vajhoej.dk> - 2012-03-12 16:01 -0400
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Joshua Cranmer <Pidgeot18@verizon.invalid> - 2012-03-12 17:28 -0500
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Jan Burse <janburse@fastmail.fm> - 2012-03-13 00:33 +0100
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Lew <lewbloch@gmail.com> - 2012-03-12 16:50 -0700
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Jan Burse <janburse@fastmail.fm> - 2012-03-13 00:56 +0100
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Arne Vajhøj <arne@vajhoej.dk> - 2012-03-12 20:03 -0400
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Jan Burse <janburse@fastmail.fm> - 2012-03-13 01:05 +0100
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Arne Vajhøj <arne@vajhoej.dk> - 2012-03-12 20:53 -0400
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Jan Burse <janburse@fastmail.fm> - 2012-03-13 14:06 +0100
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Jan Burse <janburse@fastmail.fm> - 2012-03-13 14:13 +0100
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Arne Vajhøj <arne@vajhoej.dk> - 2012-03-13 11:36 -0400
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Jan Burse <janburse@fastmail.fm> - 2012-03-13 17:48 +0100
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Jan Burse <janburse@fastmail.fm> - 2012-03-13 17:51 +0100
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Arne Vajhøj <arne@vajhoej.dk> - 2012-03-13 13:06 -0400
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Arne Vajhøj <arne@vajhoej.dk> - 2012-03-12 19:56 -0400
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Jan Burse <janburse@fastmail.fm> - 2012-03-13 01:05 +0100
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Lew <lewbloch@gmail.com> - 2012-03-12 17:23 -0700
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Arne Vajhøj <arne@vajhoej.dk> - 2012-03-12 20:51 -0400
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Martin Gregorie <martin@address-in-sig.invalid> - 2012-03-13 02:33 +0000
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Patricia Shanahan <pats@acm.org> - 2012-03-12 20:39 -0700
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Jan Burse <janburse@fastmail.fm> - 2012-03-13 14:17 +0100
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Arne Vajhøj <arne@vajhoej.dk> - 2012-03-13 11:38 -0400
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Joshua Cranmer <Pidgeot18@verizon.invalid> - 2012-03-12 21:59 -0500
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Jan Burse <janburse@fastmail.fm> - 2012-03-13 14:20 +0100
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Arne Vajhøj <arne@vajhoej.dk> - 2012-03-13 11:28 -0400
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Jan Burse <janburse@fastmail.fm> - 2012-03-13 17:42 +0100
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Arne Vajhøj <arne@vajhoej.dk> - 2012-03-13 13:16 -0400
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Jan Burse <janburse@fastmail.fm> - 2012-03-13 18:17 +0100
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Jan Burse <janburse@fastmail.fm> - 2012-03-13 18:19 +0100
              Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Silvio Bierman <silvio@moc.com> - 2012-03-12 16:21 +0100
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Jan Burse <janburse@fastmail.fm> - 2012-03-12 20:35 +0100
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Robert Klemme <shortcutter@googlemail.com> - 2012-03-12 22:49 +0100
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Silvio Bierman <silvio@moc.com> - 2012-03-13 14:10 +0100
              Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Arne Vajhøj <arne@vajhoej.dk> - 2012-03-12 13:49 -0400
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Jan Burse <janburse@fastmail.fm> - 2012-03-12 20:16 +0100
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Leif Roar Moldskred <leifm@dimnakorr.com> - 2012-03-12 14:42 -0500
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Jan Burse <janburse@fastmail.fm> - 2012-03-12 20:46 +0100
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Arne Vajhøj <arne@vajhoej.dk> - 2012-03-12 16:09 -0400
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Arne Vajhøj <arne@vajhoej.dk> - 2012-03-12 16:07 -0400
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Jan Burse <janburse@fastmail.fm> - 2012-03-12 21:27 +0100
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Arne Vajhøj <arne@vajhoej.dk> - 2012-03-12 16:52 -0400
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Jan Burse <janburse@fastmail.fm> - 2012-03-12 22:39 +0100
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Arne Vajhøj <arne@vajhoej.dk> - 2012-03-12 17:56 -0400
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Robert Klemme <shortcutter@googlemail.com> - 2012-03-12 23:02 +0100
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Jan Burse <janburse@fastmail.fm> - 2012-03-13 00:18 +0100
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Jan Burse <janburse@fastmail.fm> - 2012-03-13 00:19 +0100
  Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Steven Simpson <ss@domain.invalid> - 2012-03-13 10:28 +0000
    Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Jan Burse <janburse@fastmail.fm> - 2012-03-13 14:11 +0100
      Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Arne Vajhøj <arne@vajhoej.dk> - 2012-03-13 11:41 -0400
        Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Jan Burse <janburse@fastmail.fm> - 2012-03-13 17:43 +0100
          Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Arne Vajhøj <arne@vajhoej.dk> - 2012-03-13 13:03 -0400
            Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Jan Burse <janburse@fastmail.fm> - 2012-03-13 18:20 +0100
              Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Arne Vajhøj <arne@vajhoej.dk> - 2012-03-13 13:36 -0400
              Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Leif Roar Moldskred <leifm@dimnakorr.com> - 2012-03-13 12:42 -0500
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Jan Burse <janburse@fastmail.fm> - 2012-03-13 18:51 +0100
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Jan Burse <janburse@fastmail.fm> - 2012-03-13 18:51 +0100
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Arne Vajhøj <arne@vajhoej.dk> - 2012-03-13 19:53 -0400
                Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Jan Burse <janburse@fastmail.fm> - 2012-03-14 01:21 +0100
      Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Steven Simpson <ss@domain.invalid> - 2012-03-13 17:26 +0000
        Re: [Windows] Any way to distinguish ^C Induced EOF from ^Z EOF? Jan Burse <janburse@fastmail.fm> - 2012-03-13 18:44 +0100

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