From: Charles Forsyth <charles.forsyth@gmail.com>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
Subject: Re: [9fans] Help with interrupting fgetc()
Date: Sat, 27 Jun 2015 21:58:47 +0100 [thread overview]
Message-ID: <CAOw7k5gd8NLYukayhHNh_aOAPDc_QEy293mJEqmk2fCJ0rfnJg@mail.gmail.com> (raw)
In-Reply-To: <20150627203011.GB2121@ananda.local>
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On 27 June 2015 at 21:30, Nils M Holm <nmh@t3x.org> wrote:
> It should
> keep echoing after printing "oopsie", but it just exits instead.
> What am I missing?
>
if interrupted, fgetc returns EOF because the underlying read system call
returns -1 (with error string "interrupted").
System calls are interrupted by a note (see notify(2)). Your loop will
therefore stop and exit.
Also, see /sys/doc/comp.ms for some other details of the Plan 9 C
environment. For instance, main is
void main(int, char**);
and you need an explicit call to exits [sic] at the end of main, not a
return 0 (or you'll get an error status "main"
returned to the shell).
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next prev parent reply other threads:[~2015-06-27 20:58 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-27 20:30 Nils M Holm
2015-06-27 20:58 ` Charles Forsyth [this message]
2015-06-27 21:19 ` Nils M Holm
2015-06-27 21:12 ` Charles Forsyth
2015-06-27 21:21 ` Nils M Holm
2015-06-28 1:29 ` erik quanstrom
2015-06-28 7:29 ` Nils M Holm
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