lkml.org 
[lkml]   [2008]   [Oct]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [RFC v7][PATCH 2/9] General infrastructure for checkpoint restart
On Tue, Oct 21, 2008 at 08:02:43PM -0700, Dave Hansen wrote:
> Let's say you have a process you want to checkpoint. If it uses a
> completely discrete IPC namespace, you *know* that nothing else depends
> on those IPC ids. We don't even have to worry about who might have been
> using them and when.
>
> Also think about pids. Without containers, how can you guarantee a
> restarted process that it can regain the same pid?

OK, that makes sense. In a lot of simple cases you can get by without
regaining the same pid; there's an implementation of checkpointing in
GDB that works by injecting fork calls into the child, and it is
useful for a reasonable selection of single-threaded programs.

--
Daniel Jacobowitz
CodeSourcery


\
 
 \ /
  Last update: 2008-10-22 16:31    [W:0.071 / U:0.308 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site