> Doug McNaught wrote:
> > Rather than a new syscall, what about a magic file or device that you
> > can poll()?
>
> This is definately an option to consider. The problem that I see with
> this is that when you are trying to monitor large numbers of processes
> you have to worry about running out of file descriptors, and select()
> is no longer as happy.
No reason to have one FD per process monitored. Just a single FD, to
which you can write() a control string to to add or remove a process
from the list, and for which read() yields a small data record
describing the process event that just happened. It's a bit plan-9ish
but there's nothing wrong with that...
-Doug
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