From: erik quanstrom <quanstro@quanstro.net>
To: 9fans@9fans.net
Subject: Re: [9fans] exec crashing
Date: Fri, 25 May 2012 01:14:42 -0400 [thread overview]
Message-ID: <61b33d5171eaeeec500292dd2d983a56@brasstown.quanstro.net> (raw)
In-Reply-To: <CAM8pOuOuDjzxb=c_Nmf0dnJyMVta7qbq9M732m6V4zEZ-V8ycA@mail.gmail.c>
On Thu May 24 23:03:19 EDT 2012, burton.samograd@gmail.com wrote:
> I'm trying to add a restart feature to my modified rio by calling exec on a
> saved argv[0] and copy of argv that has been null terminated, but it crashes
> every time. Is there something about exec on plan9 that I should be aware
> of that's different than unix?
no, there's not. however, rio is a thread-library program and you can't just
exec() out without confusing other processes you're sharing memory with.
rio already has a hook where it will provide an Exit menu option if ".out"
appears somewhere in argv[0]. so, you could have an rc script named rio,
and rename rio to rio.out. the rc script would just need to read something
like
#!/bin/rc
while()
rio.out $*
- erik
next parent reply other threads:[~2012-05-25 5:14 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CAM8pOuOuDjzxb=c_Nmf0dnJyMVta7qbq9M732m6V4zEZ-V8ycA@mail.gmail.c>
2012-05-25 5:14 ` erik quanstrom [this message]
2012-05-25 3:01 Burton Samograd
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