Single byte Atomic::cmpxchg implementation

[David Holmes]

On 11/09/2014 8:59 PM, Andrew Haley wrote:
> On 09/11/2014 11:34 AM, David Holmes wrote:
>> For things like Atomic::*  the definitions are in platform specific
>> files so you should be able to use whatever mechanism you want and
>> require whatever minimal compiler version is needed.
>
> But they're not: Atomic::cmpxchg(jbyte seems to be defined in common
> code.  If it was defined in a platform-specific file there would be no
> problem for us to discuss in this thread.

Sorry - yes there is a seemingly arbitrary split between shared and 
platform-specific variants. It's fine to have generic shared approaches 
but there really needs to be a way to allow platform specific "overrides".

David

> Andrew.
>