From: "Ruslan Nikolaev via gcc" <gcc@gcc.gnu.org>
To: Alexander Monakov <amonakov@ispras.ru>
Cc: "gcc@gcc.gnu.org" <gcc@gcc.gnu.org>
Subject: Re: Fw: GCC interpretation of C11 atomics (DR 459)
Date: Mon, 26 Feb 2018 08:43:00 -0000 [thread overview]
Message-ID: <573818316.4534063.1519634565265@mail.yahoo.com> (raw)
In-Reply-To: <alpine.LNX.2.20.13.1802261106460.8765@monopod.intra.ispras.ru>
> I'd say the main issue is that libatomic is not guaranteed to work like that.
> Today it relies on IFUNC for redirection, so you may (and not "will") get the
> desired behavior on Glibc (implying Linux), not on other OSes, and neither on
> Linux with non-GNU libc (nor on bare metal, for that matter).
I think, in case if IFUNC is not available (i.e., outside glibc), redirection is still possible by introducing a regular function pointer there. Yes, it is an extra cost but better than nothing (+ consistent behavior on all platforms), probably will not add too much anyway because there is already a performance hit by going to libatomic.
next prev parent reply other threads:[~2018-02-26 8:43 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1615980330.4453149.1519617655582.ref@mail.yahoo.com>
2018-02-26 4:01 ` Ruslan Nikolaev via gcc
2018-02-26 5:50 ` Alexander Monakov
2018-02-26 7:24 ` Fw: " Ruslan Nikolaev via gcc
2018-02-26 8:20 ` Alexander Monakov
2018-02-26 8:43 ` Ruslan Nikolaev via gcc [this message]
2018-02-26 19:07 ` Torvald Riegel
2018-02-26 19:43 ` Ruslan Nikolaev via gcc
2018-02-26 22:49 ` Ruslan Nikolaev via gcc
2018-02-27 3:33 ` Ruslan Nikolaev via gcc
2018-02-27 10:34 ` Ramana Radhakrishnan
2018-02-27 11:14 ` Torvald Riegel
2018-02-27 12:39 ` Torvald Riegel
2018-02-27 13:04 ` Ruslan Nikolaev via gcc
2018-02-27 13:08 ` Szabolcs Nagy
2018-02-27 13:17 ` Ruslan Nikolaev via gcc
2018-02-27 16:40 ` Torvald Riegel
2018-02-27 17:07 ` Ruslan Nikolaev via gcc
2018-02-27 16:21 ` Torvald Riegel
2018-02-27 16:16 ` Torvald Riegel
2018-02-27 16:46 ` Simon Wright
2018-02-27 16:52 ` Florian Weimer
2018-02-27 17:30 ` Torvald Riegel
2018-02-27 17:33 ` Ruslan Nikolaev via gcc
2018-02-27 19:32 ` Torvald Riegel
2018-02-27 17:59 ` Simon Wright
2018-02-27 10:40 ` Fw: " Torvald Riegel
2018-02-26 18:56 ` Torvald Riegel
2018-02-26 12:30 ` Szabolcs Nagy
2018-02-26 13:57 ` Alexander Monakov
2018-02-26 14:51 ` Szabolcs Nagy
2018-02-26 14:53 ` Ruslan Nikolaev via gcc
2018-02-26 18:35 ` Torvald Riegel
2018-02-26 18:59 ` Ruslan Nikolaev via gcc
2018-02-26 19:20 ` Torvald Riegel
2018-02-26 18:16 ` Florian Weimer
2018-02-26 18:34 ` Ruslan Nikolaev via gcc
2018-02-26 18:36 ` Janne Blomqvist
2018-02-27 10:22 ` Florian Weimer
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