Re: [patch 1/4] signalfd v1 - signalfd core ...

From: Jeremy Fitzhardinge
Date: Wed Mar 07 2007 - 17:14:35 EST


Davide Libenzi wrote:
> You have the *choice* to do that:
>
> 1) You want standard delivery only:
>
> - Just dont use signalfd
>
> 2) you want signalfd only:
>
> - Do a sigprocmask(SIG_BLOCK) of the same mask you pass to signalfd
>
> If you want both, you can have it. Race free.
>

It's only usefully race-free if you are guarantee that each signal gets
delivered once, by one path or the other. Otherwise you get a
non-deterministic number of each signal actually delivered - what
earthly use is that to an application?

J
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