From: Peng Yu <pengyu.ut@gmail.com>
To: Florian Weimer <fweimer@redhat.com>
Cc: Peng Yu via Libc-help <libc-help@sourceware.org>
Subject: Re: What is the point of IPC_PRIVATE of shmget?
Date: Mon, 12 Apr 2021 11:12:50 -0500 [thread overview]
Message-ID: <CABrM6wm3Lxj-b__WzYHYsAKbHpE9jvFg7QBSCV7TYxbYHNFVLg@mail.gmail.com> (raw)
In-Reply-To: <87wnt7iizx.fsf@oldenburg.str.redhat.com>
On Mon, Apr 12, 2021 at 11:07 AM Florian Weimer <fweimer@redhat.com> wrote:
>
> * Peng Yu via Libc-help:
>
> > I don't get the point of IPC_PRIVATE of shmget(). Since it is just
> > used by the current process, why not just use malloc?
> >
> > Can anybody give a real example in which IPC_PRIVATE must be used, but
> > malloc or other variant of *alloc functions are not appropriate to
> > use? Thanks.
>
> shmget(2) says this:
>
> | BUGS
> | The name choice IPC_PRIVATE was perhaps unfortunate, IPC_NEW
> | would more clearly show its function.
>
> Does this answer your question?
No. That is just a naming issue. It is still privately used by the
current process instead of other processes.
--
Regards,
Peng
next prev parent reply other threads:[~2021-04-12 16:13 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-12 15:54 Peng Yu
2021-04-12 16:06 ` tomas
2021-04-12 16:07 ` Florian Weimer
2021-04-12 16:12 ` Peng Yu [this message]
2021-04-12 16:14 ` Florian Weimer
2021-04-12 16:18 ` Florian Weimer
2021-04-12 17:23 ` Peng Yu
2021-04-12 18:17 ` J Lumby
2021-04-12 17:55 ` Manfred
2021-04-12 19:05 ` Peng Yu
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