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Re: upstart: please update to latest upstream version


On Tue, Mar 6, 2012 at 7:46 PM, Josh Triplett <josh@joshtriplett.org> wrote:
> To give one particular example: systemd uses Linux-specific features to
> accurately track all the processes started by a service, which allows
> accurate monitoring and shutdown of processes which could otherwise
> disassociate themselves from their parent processes via the usual
> daemonizing trick.  POSIX doesn't provide features that allow this in
> general, but Linux does.  (Quite possibly other OSes provide those
> features too, but not in a standardized way.)

By the way, upstart uses ptrace for this:


It's an interesting trick, and probably more portable too.


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