[Users] mqueue support ?

[patrick daures]

Ok, thank you very much !
I think it will work for me.

Thank you and have a nice day !


2008/8/20, Dariush Pietrzak <ml-openvz-eyck at ddiary.eu>:
>
> > To be sure, are you actually talking about the "mqueue" from <mqueue.h> ?
> > Because this is api I want to use.
> > The filesystem is not mandatory but it would be useful for me to keep
> track
> > of the created message queues.
> I'm talking about Message Queues, one of forms of classical IPC,
> aparrently I wasn't aware of new real-time message queues recently
> introduced. Since this is fairly recent it seems like it's not virtualized
> yet ( AFAIK virtuozoo team does such large jobs only on requests from
> larger paying customers, for example IPC message queues were needed for DB2
> using customets ), though you should be able to use it from VE's (without
> mounting mqueue filesystem).
> But since it's not virtualized, mqueues would be visible to all guests and
> the host too, like this:
>
> lenny64:/# /home/eyck/mqueue
> mq_unlink(): success.
> mq_open(): success.
> mq_unlink(): success.
> mq_open(): success.
> mq_unlink(): success.
> mq_open(): success.
> mq_unlink(): success.
> mq_open(): success.
> mq_unlink(): success.
> mq_open(): success.
> mq_unlink(): success.
> mq_open(): success.
> mq_unlink(): success.
> mq_open(): success.
> mq_unlink(): success.
> mq_open(): success.
> mq_unlink(): success.
> mq_open(): success.
> mq_unlink(): success.
>
> ... on the host:
> venom:/# ls /dev/mqueue/ -l
> total 0
> -rwxr-x--- 1 root root 80 Aug 20 17:12 mqueue__1
> -rwxr-x--- 1 root root 80 Aug 20 17:12 mqueue__2
> -rwxr-x--- 1 root root 80 Aug 20 17:12 mqueue__3
> -rwxr-x--- 1 root root 80 Aug 20 17:12 mqueue__4
> -rwxr-x--- 1 root root 80 Aug 20 17:12 mqueue__5
> -rwxr-x--- 1 root root 80 Aug 20 17:12 mqueue__6
> -rwxr-x--- 1 root root 80 Aug 20 17:12 mqueue__7
> -rwxr-x--- 1 root root 80 Aug 20 17:12 mqueue__8
> -rwxr-x--- 1 root root 80 Aug 20 17:12 mqueue__9
>
> (I mounted mqueue on the host only to be able to see the queues,
> they seem to be working  ok without mqueue fs mounted)
>
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-- 
Patrick DAURES 4TC

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