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SubjectRe: [rfc 2/3] fs, proc: Introduce the Children: line in /proc/<pid>/status
Date
On Friday 02 December 2011 12:43:10, Pavel Emelyanov wrote:

> >> Yes, I like /children file. other points seems to be pointed out by other
> >> reviewers.
> >
> > Any reason this is a file instead of a directory like /proc/PID/task/ ?
> >
> > $ sudo ls /proc/8167/task/
> > 8167 854 855 856 857 858 859
> > $ sudo ls /proc/8167/task/855/
> > attr clear_refs cpuset exe io loginuid mountinfo oom_adj pagemap sched smaps statm wchan
> > auxv cmdline cwd fd latency maps mounts oom_score personality schedstat stack status
> > cgroup comm environ fdinfo limits mem numa_maps oom_score_adj root sessionid stat syscall
> >
> > Much easier to follow the chain from the command line this way.
>
> What do you propose to put into these directories? Another directories named with
> children pid-s?

Yes, just like the task/ dir gives you directories named with the
processes's thread ids. Opening /proc/PID/children/PID-CHILD1/ would get
you the same as opening /proc/PID-CHILD1/. Just like
opening /proc/PID/task/PID-CHILD1/ gets you (almost) the same as opening
/proc/PID-CHILD1/.

--
Pedro Alves


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