On Tue, 13 Dec 2016 10:49:19 +0000 Jonathan de Boyne Pollard <j.deboynepollard-newsgro...@ntlworld.com> wrote:
> Martin "eto" Misuth: > > Subreaper won't even wake when it acquires new child. > > You're following the other discussion about this, ne? I hope meant you this one. No my trips into kqueue/kvent land are very very simple ones. I did some 30 lines examples from net, watched dir, watched socket. In the past I did some luajit infested abominations but my memories are hazy it was probably garbage. However compared to <something>fd of Linux the whole system makes much more sense to me. Currently, in ets6-reaper, I am trying to (ab)use most of skalibs, so I decided to use iopause(). As it seems iopause() uses select() or (p)poll(). With null timeout, this "locks" whole reaper, which is intentional. Reparenting happens auto-magically on kernel side. Only when termination (SIGTERM) or child death (SIGCHLD) signal comes, thing wakes up and does it's job. This is intentional as I wanted it to be idle as much as possible. iopause() was chosen because it works on both platforms I care about. However for jails, I did really nasty things, I don't want to go into here exactly, at the moment. But in that context, I am seriously pondering on using kqueue. Should that ever happen I would be grateful if I was able to wake up on child reparent event. One major pain point I still have to deal with, is that I have to use Linux. eto