From: "Maurício CA" <mauricio.antunes@gmail.com>
To: 9fans@9fans.net
Subject: Re: [9fans] Different results for the same rc script when using listen1
Date: Mon, 25 Apr 2011 03:14:07 +0000 [thread overview]
Message-ID: <ip2otv$g9j$1@dough.gmane.org> (raw)
In-Reply-To: <20110425020029.GA29551@dinah>
> It fails on my Linux machine also. It's because an rfork with RFNOWAIT
> sets up a child proc that will ignore SIGCHLD. If the program that
> is executed (in this case rc) calls fork or exec all SIGCHLD signals
> will be ignored, see signal(7).
>
> Ultimately, this causes rc to set status='' for every process it forks.
> That's why all those tests are returning true.
Instead of assuming status='' for every process, rc seems to be just
ignoring process status and keeping the $status value it already had. See
this example, exactly like what I used before, but with a pattern test
that set status to 'no match':
#!/usr/local/plan9/bin/9 rc
~ 1 2
for (i in `{seq 1 5}){
if (test $i -eq 3) {
echo $i equals 3
}
if not echo $i is different from 3
}
Now, instead of true for every step, we have false:
$ dial 'tcp!localhost!8080'
1 is different from 3
2 is different from 3
3 is different from 3
4 is different from 3
5 is different from 3
Thanks,
Maurício
next prev parent reply other threads:[~2011-04-25 3:14 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-24 5:09 Maurício CA
2011-04-24 5:22 ` andrey mirtchovski
2011-04-24 7:30 ` Maurício CA
2011-04-24 14:20 ` smiley
2011-04-24 17:05 ` Maurício CA
2011-04-24 17:17 ` Bakul Shah
2011-04-25 0:16 ` Maurício CA
2011-04-25 2:00 ` Anthony Martin
2011-04-25 3:14 ` Maurício CA [this message]
2011-04-25 3:17 ` erik quanstrom
2011-04-25 3:36 ` erik quanstrom
2011-04-25 3:58 ` Bakul Shah
2011-04-25 4:39 ` erik quanstrom
2011-04-25 5:27 ` Lyndon Nerenberg
2011-04-25 5:53 ` Bakul Shah
2011-04-25 6:59 ` Robert Ransom
2011-04-25 14:56 ` Bakul Shah
2011-04-25 15:00 ` erik quanstrom
2011-04-25 16:17 ` Skip Tavakkolian
2011-04-25 16:27 ` Joseph Stewart
2011-04-25 20:13 ` smiley
2011-04-25 20:16 ` Lyndon Nerenberg
2011-04-25 20:18 ` erik quanstrom
2011-04-25 14:44 ` erik quanstrom
2011-04-25 13:53 ` Maurício CA
2011-04-25 14:42 ` erik quanstrom
2011-04-27 21:57 ` Maurício CA
2011-04-26 9:02 ` dexen deVries
2011-04-26 12:57 ` erik quanstrom
2011-04-25 2:03 ` andrey mirtchovski
2011-04-25 2:14 ` Iruatã Souza
2011-04-25 2:20 ` andrey mirtchovski
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