From: Hans-Peter Nilsson <hans-peter.nilsson@axis.com>
To: amacleod@redhat.com
Cc: bkoz@redhat.com, hp@axis.com, joseph@codesourcery.com,
gcc-patches@gcc.gnu.org, libstdc++@gcc.gnu.org, rth@redhat.com
Subject: Re: cxx-mem-model merge [6 of 9] - libstdc++-v3
Date: Fri, 11 Nov 2011 21:07:00 -0000 [thread overview]
Message-ID: <201111111904.pABJ4lxO017043@ignucius.se.axis.com> (raw)
In-Reply-To: <4EBD5F27.9040005@redhat.com> (message from Andrew MacLeod on Fri, 11 Nov 2011 18:45:11 +0100)
> From: Andrew MacLeod <amacleod@redhat.com>
> Date: Fri, 11 Nov 2011 18:45:11 +0100
> On 11/11/2011 12:43 AM, Benjamin Kosnik wrote:
> I think there is also an argument for single threaded-ness vs multi
> threaded. If there is no atomic support and its single threaded, we
> don't really need the lock... and I'm not sure how you can detect the
> change in behaviour if test_and_set and clear just store 1 and 0 rather
> than create alock, then do the store of 1 or 0.
>
> If the target is multithreaded, well, we'll have to go to a lock I
> guess... Are there any multithreaded targets without atomic support?
> ie, is this one?
No, cris-elf is not multithreaded target.
(FWIW, cris-*-linux* and crisv32-*-linux* are, but the lack of
update to the atomicity support for them is a port bug.)
brgds, H-P
next prev parent reply other threads:[~2011-11-11 19:05 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-03 23:52 Andrew MacLeod
2011-11-04 18:17 ` Jeff Law
2011-11-04 18:53 ` Andrew MacLeod
2011-11-07 0:54 ` Hans-Peter Nilsson
2011-11-07 4:48 ` Andrew MacLeod
2011-11-07 11:36 ` Hans-Peter Nilsson
2011-11-07 14:41 ` Andrew MacLeod
2011-11-07 14:56 ` Andrew MacLeod
2011-11-07 15:38 ` Hans-Peter Nilsson
2011-11-07 16:28 ` Joseph S. Myers
2011-11-07 17:24 ` Andrew MacLeod
2011-11-07 17:43 ` Hans-Peter Nilsson
2011-11-07 18:27 ` Andrew MacLeod
2011-11-08 6:45 ` Hans-Peter Nilsson
2011-11-08 13:43 ` Andrew MacLeod
2011-11-11 17:49 ` Benjamin Kosnik
2011-11-11 17:56 ` Andrew MacLeod
2011-11-11 21:07 ` Hans-Peter Nilsson [this message]
2011-11-11 23:34 ` Torvald Riegel
2011-11-11 20:27 ` Hans-Peter Nilsson
2011-11-07 16:32 ` Richard Henderson
2011-11-08 20:22 ` Hans-Peter Nilsson
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