[boost] Fwd: Re: [atomic] atomic<int>::is_lock_free() returns false on iPad 4 (armv7s)

Subject: [boost] Fwd: Re: [atomic] atomic<int>::is_lock_free() returns false on iPad 4 (armv7s)
From: Tim Blechmann (tim_at_[hidden])
Date: 2013-09-09 10:53:47

-------- Original-Nachricht --------
Betreff: Re: [boost] [atomic] atomic<int>::is_lock_free() returns false
on iPad 4 (armv7s)
Datum: Mon, 09 Sep 2013 15:49:06 +0100
Von: Phil Endecott <spam_from_boost_dev_at_[hidden]>
An: Tim Blechmann <tim_at_[hidden]>

Hi Tim,

(My Boost list subscription is temporarily broken; feel free to forward this
if you want.)

Tim Blechmann wrote:
>>>   boost:atomic<int>::is_lock_free() returns false on iPad 4 (armv7s) but
>>> returns true on iPad 3 (armv7).

Yes.  I thought this had been fixed.  It's now too long ago for me to recall
exactly what happened.  I know that I filed a trac ticket to get it
fixed in
smart_ptr's spinlock; I think that at that time Boost.Atomic has still not
been reviewed and merged, and I probably fixed it only in a local copy.

> btw, it may be worth to note that on iOS devices std::atomic should be
> available ...

Absolutely!  Few people have any reason to be using Boost.Atomic.

Regards,  Phil.