From: Iain Sandoe <iain@sandoe.co.uk>
To: "Nicolas König" <koenigni@student.ethz.ch>
Cc: Thomas Koenig <tkoenig@netcologne.de>,
dhumieres.dominique@free.fr, Fortran List <fortran@gcc.gnu.org>
Subject: Re: Update on shared memory coarrays
Date: Sat, 2 Jan 2021 22:09:01 +0000 [thread overview]
Message-ID: <191C9834-F907-4CF0-B652-16E04A42B7AB@sandoe.co.uk> (raw)
In-Reply-To: <00ABD0DC-235B-4A4E-B9E0-B1200AC07EAD@sandoe.co.uk>
Iain Sandoe <iain@sandoe.co.uk> wrote:
> Nicolas König <koenigni@student.ethz.ch> wrote:
>
>
> [IIUC what you mean by double-mapping] Allocating the same thing twice
> seems likely to be an accident waiting to happen :) ..
So the intent is:
shm_allocate
size the shm
mmap the shm
resize the shm
mmap the resized (without releasing the first mapping)
(with the intent to preserve the contents of the original mapped entities,
I guess?)
hmm… ok (there do seem to be some potential pitfalls there, depending on
whether the system needs to reallocate / move the object in response to
the re-sizing).
will poke some more if I have a chance.
Iain
next prev parent reply other threads:[~2021-01-02 22:09 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-29 19:09 dhumieres.dominique
2020-11-30 6:21 ` Thomas Koenig
2020-11-30 15:41 ` dhumieres.dominique
2020-11-30 22:13 ` Thomas Koenig
2020-12-02 17:41 ` dhumieres.dominique
2020-12-03 7:27 ` Thomas Koenig
2020-12-21 12:24 ` dhumieres.dominique
2020-12-21 13:04 ` Thomas Koenig
2020-12-22 12:28 ` dhumieres.dominique
2020-12-22 15:10 ` Thomas Koenig
2020-12-22 16:12 ` Paul Richard Thomas
2020-12-23 9:09 ` Thomas Koenig
2020-12-23 9:38 ` Paul Richard Thomas
2020-12-23 10:47 ` Thomas Koenig
2020-12-26 12:10 ` Paul Richard Thomas
2020-12-26 13:01 ` Thomas Koenig
2020-12-27 15:38 ` Thomas Koenig
2020-12-23 16:42 ` Nicolas König
2020-12-23 17:25 ` dhumieres.dominique
2020-12-27 17:10 ` Nicolas König
2021-01-01 13:51 ` dhumieres.dominique
2021-01-01 16:16 ` Thomas Koenig
2021-01-01 16:41 ` dhumieres.dominique
2021-01-02 20:45 ` Thomas Koenig
2021-01-02 20:55 ` Iain Sandoe
2021-01-02 21:43 ` Thomas Koenig
2021-01-02 22:37 ` Nicolas König
2021-01-02 21:44 ` Iain Sandoe
2021-01-02 22:09 ` Iain Sandoe [this message]
2021-01-03 10:46 ` Iain Sandoe
2021-01-03 14:54 ` Iain Sandoe
2021-01-03 15:42 ` Iain Sandoe
2021-01-03 21:53 ` Thomas Koenig
2021-01-04 2:34 ` Iain Sandoe
2021-01-04 18:54 ` Nicolas König
2021-01-05 13:11 ` Iain Sandoe
2021-01-05 13:23 ` Iain Sandoe
2021-01-05 13:27 ` Thomas Koenig
2021-01-05 13:34 ` Iain Sandoe
2021-01-05 14:54 ` Nicolas König
2021-01-05 14:28 ` Iain Sandoe
2021-01-05 15:45 ` Nicolas König
[not found] ` <BAD6EA1D-BB9F-4905-ADD1-76FA1D6B9591@sandoe.co.uk>
2021-01-05 17:11 ` Nicolas König
2021-01-06 16:56 ` Iain Sandoe
-- strict thread matches above, loose matches on Subject: below --
2020-11-29 13:10 Nicolas König
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