lkml.org 
[lkml]   [2007]   [Jul]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: inotify and /proc/<pid>
From Al Viro on Tuesday, 31 July, 2007:
>On Mon, Jul 30, 2007 at 10:31:13PM -0500, Joseph Pingenot wrote:
>> >From Joseph Pingenot on Monday, 30 July, 2007:
>> >From Al Viro on Tuesday, 31 July, 2007:
>> >>On Mon, Jul 30, 2007 at 09:16:16PM -0500, Joseph Pingenot wrote:
>> >>> I was trying to use inotify to watch process changes (especially process
>> >>> termination) by watching /proc/<pid>.
>> >>> Sadly, although I could see something reading various files, nothing
>> >>> was issued when the process I was watching exited and the directory
>> >>> went away.
>> >>> Is this intentional, or a bug?
>> >>It's a bug you intend to introduce in your program... IOW, don't
>> >>do that.
>> >More background, please?
>> >What's the way to check for a process exiting without spinning?
>> I should also specify that the process being waited on is not a
>> child process-it's just some other process on the system.
>Umm... Any details on intended use? IOW, is that "I want to write
>an utility that would wait for given PID to exit, just for the hell
>of it" or is there something you are trying to implement using that?

I'm trying to implement pwait. It blocks until a specified PID exits,
and then it exits.

You can use it to do other stuff after a program finishes.

While we're on the subject, is there some way to receive notification
that some aspect of a process changes (in this case, stopping using
CPU, but not exiting).

Thanks for the time to help me figure this out.

-Joseph

--
trelane@digitasaru.net.///////////////////////////////////////////////
"There is also an entire branch in the physical therapy field dedicated
to the treatment of little-finger injuries caused by excessive Emacs
use." --Linux Weekly News editor (http://lwn.net/Articles/206916/)
///////260 IATL / The University of Iowa / Iowa City, IA 52242///////
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2007-07-31 05:43    [W:0.678 / U:0.160 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site