Messages in this thread | | | Date | Sat, 10 Jan 2009 15:14:01 -0800 (PST) | From | Davide Libenzi <> | Subject | Re: [RESEND][RFC PATCH v2] waitfd |
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On Sat, 10 Jan 2009, Oleg Nesterov wrote:
> > Thus: > > > > - child process #1 dies > > - main loop woken up by SIGCHLD > > - pending status of signal cleared > > - enter wait loop > > - child process #2 dies > > - SIGCHLD pending again > > - waitpid() called first time, child process #1 reaped > > - waitpid() called second time, child process #2 reaped > > (SIGCHLD still pending) > > - waitpid() called third time, no child processes remain > > - exit wait loop > > - back to top of main loop, immediately woken up by pending SIGCHLD > > - pending status of signal cleared > > - enter wait loop > > - waitpid() called first time, but no child processes remain > > (we reaped it last time round) > > - exit wait loop > > - back to top of main loop, sleep > > Scott, I don't really understand why are you trying to explain this > all to me. I do understand this. At least I hope ;)
Indeed :) Scott, you're teaching Linux signals to the guy that is likely the de-facto mantainer of the subsystem. See the irony?
- Davide
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