[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Posix Inter-process comunication on RH 7.1




On Thu, 25 Oct 2001, Gold Edward wrote:

> Regarding to what Guy Keren wrote:
>
> I saw that sigqueue function is documented (xman) on RH 7.1;
> so maybe it is present on the system -- I will check it tomorow (no,
> today-it's past 24).

this is because real-time signal queing _is_ supported in the linux
kernel.

> If it is so, than Guy Keren affirmation "nor posix semaphores in the kernel"
> it's not
> holding ground.

what does 'sigqueue' got to do with posix semaphores? its got to do with
posix real-time queued signals, as far as a web-search yields.

> Can it be that just some of Posix functionality exist on RH
> 7.1 ?

yes.

> That's not making much sense...
> How can a systembe Posix compliant but without Posix ipc?

because posix is so fluid. and because it is a moving target. and because
it has optional parts.

i know this situation is frustrating (heck, i was trying to write portable
documentation to posix threads a while back, and still get the occasional
backfire every now and then) and that's why i endorse portability layers.

btw, i wrote what i originaly wrote only after performing a search on
google - my RH 6.2 system isn't exactly an up-to-date linux system.

--
guy

"For world domination - press 1,
 or dial 0, and please hold, for the creator." -- nob o. dy


=================================================================
To unsubscribe, send mail to linux-il-request@linux.org.il with
the word "unsubscribe" in the message body, e.g., run the command
echo unsubscribe | mail linux-il-request@linux.org.il